Patent Publication Number: US-10785675-B2

Title: Method and device for controlling traffic of electronic device in wireless communication system

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This application is a U.S. National Stage application under 35 U.S.C. § 371 of an International application filed on Sep. 11, 2015 and assigned application number PCT/KR2015/009561, which claimed the benefit of a Korean patent application filed on Sep. 11, 2014 in the Korean Intellectual Property Office and assigned Serial number 10-2014-0120227, the entire disclosure of which is hereby incorporated by reference. 
     TECHNICAL FIELD 
     The present invention relates to control traffic of an electronic device in a wireless communication device and, more particularly, to a method and an apparatus for controlling traffic of an electronic device so as to improve the quality of experience. 
     BACKGROUND ART 
     To meet the demand for wireless data traffic having increased since deployment of 4th generation (4G) communication systems, efforts have been made to develop an improved 5 th  generation (5G) or pre-5G communication system. Therefore, the 5G or pre-5G communication system is also called a ‘Beyond 4G Network’ or a ‘Post Long Term Evolution (LTE) System’. 
     The 5G communication system is considered to be implemented in higher frequency (mmWave) bands, e.g., 28 GHz or 60 GHz bands, so as to accomplish higher data rates. To decrease propagation loss of the radio waves and increase the transmission distance, the beamforming, massive multiple-input multiple-output (MIMO), Full Dimensional MIMO (FD-MIMO), array antenna, an analog beam forming, large scale antenna techniques are discussed in 5G communication systems. 
     In addition, in 5G communication systems, development for system network improvement is under way based on advanced small cells, cloud Radio Access Networks (RANs), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), reception-end interference cancellation and the like. 
     In the 5G system, Hybrid frequency shift keying (FSK) and quadrature amplitude modulation (FQAM) and sliding window superposition coding (SWSC) as an advanced coding modulation (ACM), and filter bank multi carrier (FBMC), non-orthogonal multiple access (NOMA), and sparse code multiple access (SCMA) as an advanced access technology have been developed. 
     With the rapid increase in the use of electronic devices, there has been a rapidly increasing interest in various additional functions provided through the electronic devices. For example, there is a rapidly increasing interest in linking two different electronic devices so as to provide functions for enhancing the user convenience. That is, various functions are provided for enhancing the user convenience by linking an electronic device, such as a smartphone that supports a cellular mobile communication network, to an electronic device such as a notebook, a smart pad, and a wearable device that supports a short-range wireless communication function (e.g., Wi-Fi). 
     DETAILED DESCRIPTION OF THE INVENTION 
     Technical Problem 
     An embodiment of the present invention is to provide a method and an apparatus for enhancing the quality of experience (QoE) of a user by differentially controlling application traffic of the primary electronic device and secondary electronic device in a system where the secondary electronic device is provided with a communication service through the primary electronic device. 
     Another embodiment of the present invention is to provide a method and an apparatus for acquiring QoE state information per traffic corresponding to an application being executed by each of first and secondary electronic devices in a system where the secondary electronic device is provided with a communication service through the primary electronic device. 
     Still another embodiment of the present invention is to provide a method and an apparatus for reporting, by a secondary electronic device, QoE state information per traffic corresponding to an application being executed, to a primary electronic device, in a system where the secondary electronic device is provided with a communication service through the primary electronic device. 
     Still another embodiment of the present invention is to provide a method and an apparatus for differentiating each part of traffic, by a primary electronic device, based on QoE state information per traffic according to an application of the primary electronic device and QoE state information per traffic according to an application of a secondary electronic device, in a system where the secondary electronic device is provided with a communication service through the primary electronic device. 
     Still another embodiment of the present invention is to provide a method and an apparatus for dividing a communication period between a secondary electronic device and a server into a plurality of periods, and differentially processing traffic for each period in a system where the secondary electronic device is provided with a communication service through the primary electronic device. 
     Solution to Problem 
     According to an embodiment of the present invention, a method for controlling traffic of an electronic device may include: detecting a plurality of parts of traffic corresponding to at least one application; and differentially processing the plurality of parts of traffic on the basis of application related information for each of the detected plurality of parts of traffic. 
     According to an embodiment of the present invention, a method for controlling traffic of an electronic device may include: detecting at least one part of traffic corresponding to at least one application; transmitting application related information on the detected at least one part of traffic to other electronic device connected to the electronic device; receiving control information on the at least one part of traffic from the other electronic device; and processing the traffic based on the received control information. 
     According to an embodiment of the present invention, an apparatus for controlling traffic of an electronic device may include: a communication module which communicates with another electronic device; and a controller which detects a plurality of parts of traffic corresponding to at least one application, and differentially processes the plurality of parts of traffic on the basis of application related information for each of the detected plurality of parts of traffic. 
     According to an embodiment of the present invention, an apparatus for controlling traffic of an electronic device may include: a communication module which communicates with other electronic device; and a communication controller which performs control so as to detect at least one part of traffic corresponding to at least one application, transmit application related information on the at least one detected part of traffic to another electronic device connected to the electronic device, receive control information on the at least one part of traffic from the other electronic device, and process the traffic based on the received control information. 
     Advantageous Effects of Invention 
     According to the present invention, in a system where a secondary electronic device is provided with a communication service through a primary electronic device, the primary electronic device differentially processes each part of traffic on the basis of QoE state information per traffic according to an application of the primary electronic device and QoE state information per traffic according to an application of the secondary electronic device, so that a higher data transmission rate and a lower latency can be provided for an application requiring high QoE, thereby enhancing QoE of a user. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a diagram schematically illustrating a structure of a system where a secondary electronic device is provided with a communication service through a primary electronic device, to which embodiments of the present invention are applied; 
         FIG. 2  is a diagram illustrating a method for differentiating traffic per period in a system where a secondary electronic device is provided with a communication service through a primary electronic device according to an embodiment of the present invention; 
         FIGS. 3A and 3B  are diagrams illustrating a signal flow for differentiating traffic and processing the same in a system where a secondary electronic device is provided with a communication service through a primary electronic device according to an embodiment of the present invention; 
         FIG. 4  is a diagram illustrating a table as an example of determining the priority for each part of traffic according to an application in a primary electronic device according to an embodiment of the present invention; 
         FIG. 5  is a diagram illustrating a user interface for setting the priority for each part of traffic according to an application in a primary electronic device according to an embodiment of the present invention; 
         FIG. 6  is a diagram illustrating a procedure for traffic differentiation in a primary electronic device according to an embodiment of the present invention; 
         FIG. 7  is a diagram illustrating a procedure for traffic differentiation in a secondary electronic device according to an embodiment of the present invention; 
         FIG. 8  is a diagram illustrating a procedure for traffic differentiation for a period between a primary electronic device and a mobile communication network in a primary electronic device according to an embodiment of the present invention; 
         FIG. 9A  is a diagram illustrating an example of acquiring QoE state information per traffic of a secondary electronic device in a primary electronic device according to an embodiment of the present invention; 
         FIG. 9B  is a diagram illustrating an example of transferring a parameter for differentiating traffic of a secondary electronic device in a primary electronic device according to an embodiment of the present invention; 
         FIG. 9C  and  FIG. 9D  are diagrams illustrating an example of performing a transport layer differentiation for traffic between a primary electronic device and a server in the primary electronic device according to an embodiment of the present invention; 
         FIG. 10  is a diagram illustrating an example of performing MAC layer differentiation for traffic between a primary electronic device and a secondary electronic device according to an embodiment of the present invention; and 
         FIG. 11  is a diagram illustrating a block configuration of a primary electronic device and a secondary electronic device according to an embodiment of the present invention. 
     
    
    
     BEST MODE FOR CARRYING OUT THE INVENTION 
     Hereinafter, some embodiments of the present invention will be described with reference to the accompanying drawings. In adding reference numerals to elements in each drawing, the same elements will be designated by the same reference numerals, if possible, although they are shown in different drawings. Further, in the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. 
     As used in various embodiments of the present invention, the expressions “include”, “may include”, and other conjugates refer to the existence of a corresponding disclosed function, operation, or constituent element, and do not limit one or more additional functions, operations, or constituent elements. Further, as used in various embodiments of the present invention, the terms “include”, “have”, and their conjugates are intended merely to denote a certain feature, numeral, step, operation, element, component, or a combination thereof, and should not be construed to initially exclude the existence or a possibility of the addition of one or more other features, numerals, steps, operations, elements, components, or combinations thereof. 
     Further, as used in various embodiments of the present invention, the expression “or” includes any or all combinations of words enumerated together. For example, the expression “A or B” may include A, may include B, or may include both A and B. 
     While expressions including ordinal numbers, such as “first” and “second”, as used in various embodiments of the present invention may modify various constituent elements, such constituent elements are not limited by the above expressions. For example, the above expressions do not limit the sequence and/or importance of the elements. The above-described expressions may be used to distinguish an element from another element. For example, a primary electronic device and a secondary electronic device indicate different electronic devices although both of them are electronic devices. For example, a first element may be termed a second element, and likewise a second element may also be termed a first element without departing from the scope of various embodiments of the present invention. 
     It should be noted that if it is described that one component element is “coupled” or “connected” to another component element, the first component element may be directly coupled or connected to the second component, and a third component element may be “coupled” or “connected” between the first and second component elements. Conversely, when one component element is “directly coupled” or “directly connected” to another component element, it may be construed that a third component element does not exist between the first component element and the second component element. 
     The terms as used in various embodiments of the present invention are merely for the purpose of describing particular embodiments and are not intended to limit the various embodiments of the present invention. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. 
     Unless defined otherwise, all terms used herein, including technical terms and scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which various embodiments of the present invention pertain. Such terms as those defined in a generally used dictionary are to be interpreted to have the meanings equal to the contextual meanings in the relevant field of art, and are not to be interpreted to have ideal or excessively formal meanings unless clearly defined in the present invention. 
     An “electronic device” as described below in embodiments of the present invention means an electronic device that is fixed or mobile. According to the embodiments, another term may be used to refer to the electronic device, for example, the electronic device may be called a mobile station (MS), a user equipment (UE), a mobile equipment (ME), a mobile terminal (MT), a user terminal (UT), a subscriber station (SS), a wireless device, a personal digital assistant (PDA), a wireless modem, or a handheld device. 
     An electronic device according to various embodiments of the present invention may be a device including a communication function. For example, the electronic device may include at least one of a smart phone, a tablet personal computer (PC), a mobile phone, a video phone, an e-book reader, a desktop PC, a laptop PC, a netbook computer, a personal digital assistant (PDA), a portable multimedia player (PMP), an MP3 player, a mobile medical device, a camera, a wearable device (e.g., a head-mounted-device (HMD) such as electronic glasses, electronic clothes, an electronic bracelet, an electronic necklace, an electronic appcessory, an electronic tattoo, or a smart watch). 
     According to some embodiments, the electronic device may be a smart home appliance with a communication function. The smart home appliances may include at least one of, for example, televisions, digital video disk (DVD) players, audio players, refrigerators, air conditioners, cleaners, ovens, microwaves, washing machines, air purifiers, set-top boxes, TV boxes (e.g., HomeSync™ of Samsung, Apple TV™, or Google TV™), game consoles, electronic dictionaries, electronic keys, camcorders, or electronic frames. 
     According to some embodiments, the electronic device may include at least one of various medical appliances (e.g., magnetic resonance angiography (MRA), magnetic resonance imaging (MRI), computed tomography (CT), and ultrasonic machines), navigation equipment, a global positioning system (GPS) receiver, an event data recorder (EDR), a flight data recorder (FDR), automotive infotainment device, electronic equipment for ships (e.g., ship navigation equipment and a gyrocompass), avionics, security equipment, a vehicle head unit, an industrial or home robot, an automatic teller&#39;s machine (ATM) of a banking system, and a point of sales (POS) of a shop. 
     According to some embodiments, the electronic device may include at least one of a part of furniture or a building/structure having a communication function, an electronic board, an electronic signature receiving device, a projector, and various kinds of measuring instruments (e.g., a water meter, an electric meter, a gas meter, a radio wave meter, and the like). The electronic device according to various embodiments of the present invention may be a combination of one or more of the aforementioned various devices. Also, an electronic device according to various embodiments of the present invention may be a flexible device. Further, it will be apparent to those skilled in the art that the electronic device according to various embodiments of the present invention is not limited to the aforementioned devices. 
     In various embodiments, the term “user” may indicate a person using an electronic device or a device (e.g. an artificial intelligence electronic device) using an electronic device. 
     Further, in an embodiment of the present invention, the electronic device may be divided into a primary electronic device and a secondary electronic device. For example, the primary electronic device refers to an electronic device supporting a tethering, a mobile hotspot, and/or a relay function, which may access a cellular mobile communication network, and may be connected to a secondary electronic device through a short-range wireless communication technology (e.g., Wi-Fi or Bluetooth) to allow the secondary electronic device to access the cellular mobile communication network. For example, the primary electronic device may operate as an Access Point (AP) of short-range wireless communication and provide an Internet service using a cellular mobile communication network to the secondary electronic device connected to the primary electronic device. In addition, the secondary electronic device refers to an electronic device that is connected to the primary electronic device through a short-range wireless communication technology and is provided with an Internet service using a cellular mobile communication network through the primary electronic device. For example, the secondary electronic device may be an electronic device that cannot directly access a cellular mobile communication network. As another example, the secondary electronic device may be an electronic device that supports a function of directly accessing a cellular mobile communication network, but after connecting through the short-range wireless communication technology with the primary electronic device according to a user&#39;s control, indirectly accesses the cellular mobile communication network through the primary electronic device. 
     In the following description, a method and device for enhancing the quality of experience (QoE) of a user by differentially controlling application traffic of the primary electronic device and the secondary electronic device in a system where the secondary electronic device is provided with a communication service through the primary electronic device. 
       FIG. 1  illustrates a schematic structure of a system where a secondary electronic device provides a communication service through a primary electronic device, to which embodiments of the present invention are applied. 
     Referring to  FIG. 1 , each of the plurality of secondary electronic devices  102 - 1  to  102 - 3  may be connected to a primary electronic device  100  through a short-range wireless communication, and may access the Internet using a cellular network supported by the connected primary electronic device  100 . That is, each of the plurality of secondary electronic devices  102 - 1  to  102 - 3  may transmit a packet for communication with a server  110  to the primary electronic device  100 , and the primary electronic device  100  may transmit packets received from each of secondary electronic devices  102 - 1  to  102 - 3  to the server  110 . At this time, the primary electronic device  100  may change the address and port of IP packets from each of the secondary electronic devices  102 - 1  to  102 - 3  to the server  110  based on a Network Address and Port Translation (NAPT) function, and may then transmit the changed IP packet to the server  110 . In addition, the primary electronic device  100  may change the address and port of IP packets from the server  110  to the secondary electronic devices  102 - 1  to  102 - 3  based on the NAPT function, and may then transmit the changed IP packet. 
       FIG. 2  is a diagram illustrating a method for differentiating traffic per period in a system where a secondary electronic device is provided with a communication service through a primary electronic device according to an embodiment of the present invention. 
     Referring to  FIG. 2 , each of the plurality of secondary electronic devices  202 - 1  to  202 - 3  may be connected to a primary electronic device  200  through a short-range wireless communication technology according to an embodiment of the present invention. The plurality of secondary electronic devices  202 - 1  to  202 - 3  may use a communication service through the cellular mobile communication network access function of the primary electronic device  200 . 
     In addition, the primary electronic device  200  may be connected to the plurality of secondary electronic devices  202 - 1  to  202 - 3  connected through a short-range wireless communication technology, and may access a cellular mobile communication network through a base station (eNB,  204 ) to perform a function for transmitting packets, which are transmitted from the plurality of secondary electronic devices  202 - 1  to  202 - 3 , to the nodes (e.g., a base station  204 , P-GW  206  and/or servers  210 - 1  to  210 - 3 ) of a cellular mobile communication network, and transmitting packets from the nodes (e.g., the base station  204 , the P-GW  206 ) of a cellular mobile communication network and/or the server  210 - 1  to  210 - 3  to a plurality of secondary electronic devices  202 - 1  to  202 - 3 . 
     According to an embodiment of the present invention, the primary electronic device  200  may divide a traffic period for the plurality of secondary electronic devices  202 - 1  to  202 - 3  and/or the primary electronic devices  200  into a plurality of periods in order to provide a differential communication service based on an application being executed on the primary electronic devices  200  and the plurality of secondary electronic devices  202 - 1  to  202 - 3 . For example, the traffic period for the plurality of secondary electronic devices  202 - 1  to  202 - 3  and/or the primary electronic device  200  may be divided into a period 1 that corresponds to a communication period between the plurality of secondary electronic devices  202 - 1  to  202 - 3  and the primary electronic device  200 , a period 2 that corresponds to a communication period between the primary electronic device  200  and the servers  210 - 1  to  210 - 3 , and a period 3 that corresponds to a communication period between the primary electronic device  200  and nodes  204  and  206  of a cellular mobile communication network. 
     In addition, the primary electronic device  200  may determine the priority of each part of traffic according to an application being running on the plurality of secondary electronic devices  202 - 1  to  202 - 3  and the primary electronic device  200 , and may perform traffic differentiation in each period based on the priority of the traffic. For example, each of the plurality of secondary electronic devices  202 - 1  to  202 - 3  may monitor an application being executed on the corresponding secondary electronic device to acquire QoE state information per traffic of the application, and may transmit the acquired QoE state information per traffic of the application to the primary electronic device  200 . The primary electronic device  200  may receive, from each of the plurality of secondary electronic devices  202 - 1  to  202 - 3 , QoE state information per traffic of the application being executed on the corresponding electronic device, and acquire QoE state information per traffic of the application being executed on the primary electronic device  200 . The primary electronic device  200  may determine the priority of each of the plurality of parts of traffic based on the QoE state information of each of the received traffic and acquired traffic, and may differentially control traffic for the period 1, the period 2, and the period 3 based on the determined priority. For example, the primary electronic device  200  may perform Medium Access Control (MAC) layer differentiation  220  based on the priority for each part of traffic with respect to traffic of the period 1 between the plurality of secondary electronic devices  202 - 1  to  202 - 3  and the primary electronic device  200 . In addition, the primary electronic device  200  may perform transport layer differentiation  222  based on the priority for each part of traffic, with respect to traffic of the period 2 between the primary electronic device  200  and the servers  210 - 1  to  210 - 3 . In addition, the primary electronic device  200  may perform quality of service (QoS) provision control  224  based on QoE state information per traffic with respect to traffic of the corresponding period 3 between the primary electronic device  200  and the network nodes  204  and  206 . Hereinafter, a method of determining the priority for each part of traffic and performing differentiation for each part of traffic in each period will be described in detail. 
       FIGS. 3A and 3B  are diagrams illustrating a signal flow for differentiating traffic and processing the same in a system where a secondary electronic device is provided with a communication service through a primary electronic device according to an embodiment of the present invention. Here, for the convenience of explanation, it is assumed that two secondary electronic devices  202 - 1  and  202 - 2  are connected to the primary electronic device  200  through a short-range wireless communication technology and communicate with the server  210 . In addition, in the following embodiment, for the convenience of explanation, it is also assumed that one application is executed in each of the secondary electronic device A  202 - 1 , the secondary electronic device B  202 - 2 , and the primary electronic device  200 , and one traffic is generated by an executed application. However, the following embodiment may also be applied in the same manner when a plurality of applications are executed in at least one of the secondary electronic device A  202 - 1 , the secondary electronic device B  202 - 2 , and the primary electronic device  200 . In addition, the following embodiment may also be applied in the same manner when at least one application generates plurality of parts of traffic, which is executed in at least one of the secondary electronic device A  202 - 1 , the secondary electronic device B  202 - 2 , and the primary electronic device  200 . For example, it is natural that the following embodiment may also be applied in the same manner when three applications requiring communication with an external server are executed in the secondary electronic device B  202 - 2 , and a particular application among the executed three applications generates two parts of traffic to communicate with different two external servers. In addition, in the following description, an application refers to an application that generates traffic requiring the QoE guarantee. For example, an application according to an embodiment of the present invention refers to an application that generates communication traffic with at least one other electronic device, a network node, and/or a server. 
     Referring to  FIG. 3A  and  FIG. 3B , a procedure for performing traffic differentiation and processing the same according to an embodiment of the present invention may be divided into a total of five steps. For example, the procedure for traffic differentiation and processing the same may be divided into a step  300  for acquiring QoE state information per traffic, a step  320  for determining the priority and parameter for each part of traffic, a step  340  for differentiating the period 2, step  360  of differentiating the period 1, and a step  380  for differentiating the period 3. Here, the step  340  for differentiating the period 2, the step  360  for differentiating the period 1, and the step  380  for differentiating the period 3 may be changed in order, and performed at the same time. 
     First, the step  300  for acquiring QoE state information per traffic may be configured as follows. The secondary electronic device A  202 - 1  detects the activation of an application “APP1” in step  301 . When the activation of the “APP1” is detected, the secondary electronic device A  202 - 1  generates traffic “T1” corresponding to “APP1” and acquires QoE state information on “T1” of “APP1” in step  305 . Subsequently, in step  311 , the secondary electronic device A  202 - 1  includes the QoE state information in the uplink packet of “T1” for “APP1” and transmits the same to the primary electronic device  200 . For example, in step  311 , the secondary electronic device A  202 - 1  may include the QoE state information in an option field of the header of the uplink packet of “T1” for “APP1” and transmit the same to the primary electronic device  200 . In another example, the secondary electronic device A  202 - 1  may generate a separate message including the QoE state information and transmit the same to the primary electronic device  200 . 
     In addition, the secondary electronic device B  202 - 2  detects the activation of an application “APP2” in step  302 . When the activation of the “APP2” is detected, the secondary electronic device B  202 - 2  generates traffic “T2” corresponding to “APP2” and acquires QoE state information on “T2” of “APP2” in step  307 . Subsequently, in step  313 , the secondary electronic device B  202 - 2  includes the QoE state information in the uplink packet of “T2” for “APP2” and transmits the same to the primary electronic device  200 . For example, in step  313 , the secondary electronic device B  202 - 2  may include the QoE state information in an option field of the header of the uplink packet of “T2” for “APP2” and transmit the same to the primary electronic device  200 . In another example, the secondary electronic device B  202 - 2  may generate a separate message including the QoE state information and transmit the same to the primary electronic device  200 . 
     In addition, the primary electronic device  200  detects the activation of an application “APP3” in step  303 . When the activation of the “APP3” is detected, the primary electronic device A  200  generates traffic “T3” corresponding to “APP3” and acquires QoE state information on “T3” of “APP3” in step  309 . It is illustrated in drawings that each of the secondary electronic device A  202 - 1 , the secondary electronic device B  202 - 2 , and the primary electronic device  200  simultaneously performs operations of detecting the activation of an application, generating traffic corresponding to the activated application, and acquiring QoE state information. However, the time point of detecting the activation of the application and the time point of generating the traffic of each of the secondary electronic device A  202 - 1 , the secondary electronic device B  202 - 2 , and the primary electronic device  200  may be different. 
     Here, the QoE state information may be configured as shown in Table 1 below. 
     
       
         
           
               
               
               
             
               
                 TABLE 1 
               
               
                   
               
               
                 Items 
                 Contents 
                 Values 
               
               
                   
               
             
            
               
                 Differentiation 
                 Indicates that QoE 
                 0/1 (0: QoE 
               
               
                 (prioritization) 
                 state information 
                 state information 
               
               
                 request flag 
                 is included. That 
                 is not included, 
               
               
                   
                 is, refers to 
                 1: QoE state 
               
               
                   
                 whether QoE state 
                 information is 
               
               
                   
                 information is 
                 included) 
               
               
                   
                 included in header 
               
               
                   
                 information of 
               
               
                   
                 the corresponding 
               
               
                   
                 packet 
               
               
                 Application 
                 Indicates 
                 A value that 
               
               
                 ID 
                 identification 
                 is randomly 
               
               
                   
                 information 
                 assigned, as a 
               
               
                   
                 for identifying an 
                 unique value in 
               
               
                   
                 application 
                 an electronic device 
               
               
                   
                 corresponding to 
               
               
                   
                 the corresponding 
               
               
                   
                 traffic in a 
               
               
                   
                 secondary electronic 
               
               
                   
                 device 
               
               
                 Application 
                 Indicates type of 
                 video, voice, BE, BG, 
               
               
                 type 
                 an application 
                 Interactive, etc. 
               
               
                   
                 corresponding to 
               
               
                   
                 the corresponding 
               
               
                   
                 traffic 
               
               
                 Device usage state 
                 Indicates usage 
                 Screen output: in 
               
               
                 of application 
                 states of an input 
                 use/not in use 
               
               
                   
                 device and an output 
                 Audio output: in 
               
               
                   
                 device of a current 
                 use/not in use 
               
               
                   
                 user in an application 
                 Vibration: in 
               
               
                   
                 corresponding to 
                 use/not in use 
               
               
                   
                 the corresponding 
                 Touch input: in 
               
               
                   
                 traffic 
                 use/not in use 
               
               
                   
                   
                 Microphone input: 
               
               
                   
                   
                 in use/not in use 
               
               
                 Required 
                 Indicates a bandwidth 
                 A value determined 
               
               
                 bandwidth 
                 required when the 
                 by an application 
               
               
                   
                 corresponding traffic 
               
               
                   
                 is a realtime or 
               
               
                   
                 multimedia transmission 
               
               
                 Rrequired 
                 Indicates a latency 
                 A value determined 
               
               
                 latency 
                 requiring guarantee when 
                 by an application 
               
               
                   
                 the corresponding 
               
               
                   
                 traffic is a realtime 
               
               
                   
                 or multimedia 
               
               
                   
                 transmission 
               
               
                   
               
            
           
         
       
     
     In Table 1, the differentiation request flag is information indicating whether QoE state information is included in the header of the corresponding packet. When the value of the differentiation request flag is “1”, the primary electronic device  200  may acquire, from the header of the corresponding packet, the QoE state information on the corresponding traffic. The primary electronic device  200  may acquire, while performing an NAPT function, 5-tuple information from the header of the corresponding packet without the QoE state information on the corresponding traffic from the header of the corresponding packet. In addition, in Table 1, the application ID is an identifier for identifying an application corresponding to the corresponding traffic in each electronic device. The application ID may be arbitrarily selected such that the application ID is not duplicated with other applications in the electronic device where the corresponding application is activated. The primary electronic device  200  may identify an application corresponding to the corresponding traffic using the application ID. In addition, the primary electronic device  200  may determine the number of applications being executed in each electronic device using the application ID. In Table 1, the application type indicates the type of application corresponding to the corresponding traffic. In addition, in Table 1, the device usage state of an application indicates the usage states of an input device and an output device in the application corresponding to the corresponding traffic. In other words, the device usage state of an application may be generated by monitoring in real time whether a current user inputs, by an input device, to the application and whether the application is output to an output device. Here, the input device may include a microphone, a touch sensor, a keyboard, a health information sensor (e.g., a sensor for measuring electrocardiogram, pulse, respiration, etc.), a gyro sensor, a GPS, and the like, and the output device may include a display, a speaker, an earphone, a vibrating element, and the like. Additionally, according to various embodiments of the present invention, an electronic device may generate the device usage state information of an application, using the number of input devices by which an input to the corresponding application is generated, a period for which an input is generated, by the input device, to the corresponding application, the frequency of input generation, by the input device, to the corresponding application, and/or the amount of input data generated, by the input device, to the corresponding application, and the like. As another example, the electronic device may generate information indicating the device usage state of an application, using the number of output devices by which an output for the application is generated, a period for which the output of the corresponding application is generated by an output device, the frequency of output generation of the corresponding application by the output device, the amount of output data generated, by the output device, in the corresponding application, and/or information on output screen size of the corresponding application in relation to the total output screen size. In addition, the required bandwidth and required latency in Table 1 may or may not be included in the QoE state information according to a design scheme. 
     Next, the step  320  for determining the priority and parameter for each part of traffic may be configured as follows. 
     As described above, the primary electronic device  200  that has acquired QoE state information for each application determines the priority per traffic for each period in step  321 . That is, since QoE state information of traffic, generated by the application of the primary electronic device  200 , and QoE state information of all parts of traffic passing through the primary electronic device  200  may be acquired through the step  300  for acquiring QoE state information per traffic, which has been described above, the primary electronic device  200  may determine the priority for traffic differentiation in the period 1 and the period 2 based on the acquired QoE state information. For example, the primary electronic device  200  may determine the priority for each part of traffic, as shown in Equation 1 below. 
     
       
         
           
             
               
                 
                   
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                         n 
                       
                       ⁢ 
                       
                           
                       
                       ⁢ 
                       
                         
                           P 
                           j 
                         
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                           / 
                         
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                         n 
                       
                     
                   
                 
               
               
                 
                   [ 
                   
                     Equation 
                     ⁢ 
                     
                         
                     
                     ⁢ 
                     1 
                   
                   ] 
                 
               
             
           
         
       
     
     Here, P i  denotes priority for traffic i, p i  and p j  denote QoE points (QP) for traffic i and traffic j, respectively, and n denotes the total number of traffic using the corresponding period. The primary electronic device  200  may acquire 5-tuple information and application ID information from the header of the packet received from the secondary electronic devices  202 - 1  and  202 - 2 , and may check the number of traffic using a communication period between the primary electronic device  200  and the secondary electronic devices  202 - 1  and  202 - 2  based on the acquired information. In addition, the primary electronic device  200  may check the number of traffic that use the period between the primary electronic device  200  and the secondary electronic devices  202 - 1  and  202 - 2  based on the 5-tuple information and application ID information acquired from the header of the packet received from the secondary electronic devices  202 - 1  and  202 - 2  and the number of traffic generated by the application of the primary electronic device  200 . Here, the 5-tuple information may include a source IP address (SIP), a source port (SP), a destination IP address (DIP), a destination port, and type information. In addition, as shown in Table 1, the primary electronic device  200  may determine a QoE point based on device usage state information of an application for each part of traffic. For example, the primary electronic device  200  may determine a QoE point based on the number of input/output devices currently being used by the corresponding application. More specifically, when the device usage state information of an application indicates “screen output: in use, audio output: in use, vibration: not in use, touch input: not in use, microphone input: not in use”, the primary electronic device  200  may check that an application corresponding to the traffic of the corresponding packet has been using a screen output device and an audio output device, and may add one point for the use of the screen output device and one point for the use of the audio output device to the basic one point, so as to determine that the QoE point is three points. For example, as shown in  FIG. 4 , when traffic one of “SIP: 1, DIP: 2, SP: 80, DP: 80, Type: TCP, APP ID: 1”, traffic 2 of “SIP: 1, DIP: 22, SP: 123, DP: 123, Type: TCP, APP ID: 1”, traffic three of “SIP: 1, DIP: 11, SP: 80, DP: 80, Type: TCP, APP ID: 2”, traffic four of “SIP: 2, DIP: 2, SP: 80, DP: 80, Type: TCP, APP ID: 1” are detected, the primary electronic device  200  may calculate QP for each part of traffic 1 to traffic 4, and determine the priority of the traffic for each period according to a predetermined method such as Equation 1.  FIG. 4  illustrates a table on the assumption that the IP address of the secondary electronic device A  202 - 1  is “1”, the IP address of the secondary electronic device B  202 - 2  is “2”, and the IP address of the primary electronic device  200  is “22”. Referring to  FIG. 4 , the primary electronic device  200  may determine that the traffic one and two are different traffic from each other because the destination IP addresses of the traffic one and two are different even though the source IP address and the application ID of the same are identical. In addition, since the destination IP address of the traffic 2 corresponds to the IP address of the primary electronic device  200 , the primary electronic device  200  may determine the corresponding traffic as traffic that uses only the period 1. Thus, the primary electronic device  200  may determine the priority w1 in period 1 for each of the traffic one to four, and may determine the priority w2 in period 2 for the traffic one, three, and four. When QP for each part of traffic and the priority per period of each part of traffic are determined, the primary electronic device  200  may store the same in the form of the table as shown in  FIG. 4 . Here, Equation 1 and  FIG. 4  are merely illustrative for the understanding of the present invention, and the method of determining the priority in the present invention is not limited to Equation 1 and  FIG. 4 . 
     In another embodiment, the primary electronic device  200  may display a user interface through which a priority for an application of each electronic device is set as shown in  FIG. 5 . The primary electronic device  200  may be configured to allow a user to receive information for setting the priority of the application for each electronic device through the displayed user interface. For example, as shown in  FIG. 5 , the primary electronic device  200  may display a user interface requesting the priority settings for each of the applications supported by the secondary electronic device A  202 - 1 , applications supported by the secondary electronic device B  202 - 2 , and applications supported by the primary electronic device  200 , so as to set the priority for each application according to the user control. At this time, the user interface requesting the priority settings may be configured in various ways, such as an interface for the priority setting of each application as one of predetermined levels (low level, intermediate level, high level) or an interface for the priority setting of each application as a numerical value, or the like. Thus, in order to set the priority of an application by the user input, an operation of transmitting information (e.g., MAC address) for identifying the secondary electronic device A  202 - 1  and the secondary electronic device B  202 - 2 , information on applications (e.g., application ID, application name, or application icon) supported by each of the secondary electronic device A  202 - 1  and the secondary electronic device B  202 - 2 , to the primary electronic device  200  should be preceded at the time point when the secondary electronic device A  202 - 1  and the secondary electronic device B  202 - 2  are initially accessed or initially connected to the primary electronic device  200 . In addition, when the priority of an application is set by the user input as described above, the primary electronic device  200  may acquire QoE state information configured as shown in Table 1, from the secondary electronic devices  202 - 1  and  202 - 2 , through the step  300  for acquiring QoE state information per traffic, which has been described above, and may receive only the application ID information on each part of traffic from the secondary electronic devices  202 - 1  and  202 - 2 . 
     The primary electronic device  200  calculates the priority for each part of traffic, and then calculates the MAC layer control parameter of each of the plurality of parts of traffic (e.g., T1 and T2) for the period 1 in step  323 . For example, the period 1 may utilize a radio frequency band through the wireless connection technology such as Carrier Sense Multiple Access (CSMA)/Collision Avoid (CA) based on a wireless LAN or Bluetooth defined in 802.11. Thus, the primary electronic device  200  may determine parameters used for media access based on the CSMA/CA by each electronic device, based on the priority of the period 1 for each part of traffic. For example, the primary electronic device  200  may determine parameters that allow high priority traffic for the period 1 to have more transmission opportunities than low priority traffic for the period 1 in a contention free period. In another example, the primary electronic device  200  may determine the medium access probability for each part of traffic and/or the length of a time period (transmission opportunity (TXOP)) at which the medium may be independently used during a contention period. For example, the primary electronic device  200  may determine the medium access probability for the traffic having the highest priority in the period 1 to be the highest, and determine the TXOP length to be the longest. In addition, the primary electronic device  200  may determine the medium access probability for the traffic having the lowest priority in the period 1 to be the lowest, and determine the TXOP length to be the shortest. According to an embodiment, a MAC layer control parameter may include information indicating media access opportunities in the contention free period, and information indicating the medium access probability and the length of the TXOP in the contention period. In another embodiment, the MAC layer control parameter may include another parameter that may differentiate the traffic of the period 1 and process the same. 
     The primary electronic device  200  calculates the transport layer control parameter of each of the plurality of parts of traffic (e.g., T1, T2, and T3) for the period 2 in step  325 . For example, at least one parameter for adjusting a TCP transmission (sending) rate and/or an UDP transmission (sending) rate of the period 2 may be calculated. For example, since the TCP transmission rate is determined by three factors of the congestion window (CWND), that is Round Trip Time (RTT), RCVD, and packet loss, the primary electronic device  200  may calculate a parameter that controls at least one of the RTT, RCVD, and packet loss for TCP-type traffic based on the priority for the period 2 of each part of traffic. In another example, since the UDP transmission rate may be changed by delay, packet loss, or bandwidth, and the like, reported from an electronic device to a server, the primary electronic device  200  may calculate a parameter that adjusts at least one of the delay, packet loss, and bandwidth for UDP-type traffic, based on the priority for the period 2 of each part of traffic. 
     In step  320  for determining the priority and parameter per traffic as described above, since the order of step  323  and step  325  is described for illustrative purposes, the order of the steps may be changed. For example, the step  323  and the step  325  may be performed at the same time, and the step  325  may be performed before the step  323 . 
     Next, the period 2 differentiation step  340  may be configured as follows. 
     When the transport layer control parameter for each part of traffic is calculated through step  320  for determining the priority and parameter per traffic, which has been described above, the primary electronic device  200  applies the transport layer control parameter to traffic of the period 2 in step  341 . Then, the primary electronic device  200  transmits, to the server  210 , the uplink packet of each part of traffic to which the differentiation for the period 2 is applied, as in step  343 , step  345 , and step  347 . For example, the primary electronic device  200  may apply the calculated TCP transmission rate control parameter for TCP-type traffic so as to increase the transmission rate of high-priority traffic, and decrease the transmission rate of low-priority traffic. In a more detailed example, when the transport layer control parameter for traffic one of the TCP type having the highest priority is a parameter indicating an ACK split transmission, the primary electronic device  200  may split the TCP ACK of the traffic one and transmit the same to the server  210 , so as to increase the transmission rate of the server. In another example, when the transport layer control parameter for traffic two of TCP type having the lowest priority is a parameter indicating an increase in RTT, the primary electronic device  200  may delay the uplink packet of traffic two for a predetermined time or longer and then transmit the delayed packet to the server  210  to forcibly increase the RTT, thereby decreasing the transmission rate of the traffic two. As another example, when the transport layer control parameter for traffic two of the TCP type having the lowest priority is a parameter indicating a reduction in RCVD, the primary electronic device  200  may describe the RCVD value of the TCP ACK of traffic two as a value smaller than the value described in the corresponding secondary electronic device  202 - 2  and may transmit the same to the server  200 , so as to decrease the transmission rate of the traffic two. As another example, when the transport layer control parameter for traffic two of the TCP type having the lowest priority is an indication of explicit congestion notification (ECN) bit/an indication of explicit congestion notification-echo (ECE) bit, the primary electronic device  200  may describe the ECN bit indication of the primary electronic device  200  in the ECE bit of the ACK bit of traffic two of the secondary electronic device  202 - 2  and may transmit the same to the server  210 , so as to decrease the transmission rate of the traffic two. As another example, when the transport layer control parameter for traffic two of the TCP type having the lowest priority is a duplicated ACK transmission, the primary electronic device  200  may fictitiously generate a duplicated ACK for traffic two under the circumstances that there is no packet loss for traffic two and may transmit the same to the server  210 , so as to decrease the transmission rate of the traffic two. 
     In still another embodiment, the primary electronic device  200  may explicitly command, to the secondary electronic devices  202 - 1 ,  202 - 2 , the transport layer speed control for the traffic, based on the priority for each part of traffic and the transport layer control parameter for each part of traffic, determined as described above. For example, the primary electronic device  200  may transmit, to the secondary electronic devices  202 - 1 ,  202 - 2 , a message that commands lowering of the transport layer speed for traffic of the secondary electronic devices  202 - 1 ,  202 - 2  having relatively lower priorities. The primary electronic device  200  may include a command for controlling the transport layer speed of traffic for a specific application in the IP packet which is transmitted to the secondary electronic devices  202 - 1  and  202 - 2  and transmit the same, and may generate a separate command message for controlling the transport layer speed of traffic for a specific application and transmit the same. The secondary electronic devices  202 - 1  and  202 - 2 , which have received the transport layer speed control command message, may control the transport layer speed of the corresponding traffic. For example, the secondary electronic devices  202 - 1  and  202 - 2 , which have received the message that commands the lowering of the transport layer speed, may decrease the speed for the downlink traffic to which the command the lowering of the transport layer speed is input, using a method of decreasing the RCVD value of the TCP ACK and transmitting the same, a method of delaying the TCP ACK and transmitting the same, a method of indicating an ECN bit, and the like, which have been described above. The secondary electronic devices  202 - 1  and  202 - 2 , which have received the message that commands the lowering of the transport layer speed, may use a method of decreasing the TCP congestion window (CWND) to directly decrease the transmission rate when the corresponding traffic is the uplink TCP traffic. The secondary electronic devices  202 - 1  and  202 - 2 , which have received the message that commands the lowering of the transport layer speed, may directly decrease its own transport layer speed for the uplink traffic, or may decrease a reporting report for the downlink traffic to be transmitted to the server when the corresponding traffic is UDP traffic. 
     In addition, the primary electronic device  200  may transmit the transport layer control parameter of each part of traffic (e.g., T1, T2, and T3) calculated in step  325  to the secondary electronic devices  202 - 1 ,  202 - 2  to induce the secondary electronic devices  202 - 1  and  202 - 2  to control the transmission rate of the corresponding traffic. For example, the primary electronic device  200  may fill in an IP packet corresponding to each part of traffic, at least one parameter calculated for controlling a TCP transmission rate and/or a UDP transmission rate for each part of traffic and transmit the same, or may transmit the same, by using a separate message, to the secondary electronic devices  202 - 1  and  202 - 2 . The parameters transmitted from the primary electronic device  200  to the secondary electronic devices  202 - 1  and  202 - 2  may include a parameter for controlling at least one of the RTT, RCVD, CWND, and packet loss of the TCP traffic of the secondary electronic devices  202 - 1  and  202 - 2 , and/or a parameter for controlling at least one of delay, packet loss, and bandwidth of the UDP traffic of the secondary electronic devices  202 - 1  and  202 - 2 . According to an embodiment, the parameter used to control the transport layer speed for a particular traffic in the primary electronic device  200  and the parameter used to control the transport layer speed for a particular traffic in the secondary electronic devices  202 - 1  and  202 - 2  may be the same as or different from each other. 
     In the above-described example, a method of decreasing the transmission rate for TCP-type traffic having low priorities may have an effect of increasing the transmission rate for TCP-type traffic having relatively high priorities. In addition, the method of increasing the transmission rate for TCP-type traffic having high priorities may have an effect of decreasing the transmission rate for TCP-type traffic having relatively low priorities. For example, when the transmission rate of one flow transmitted through a particular path according to the characteristics of TCP decreases, the transmission rate of other flows transmitted through the same path according to the characteristics of TCP increases. 
     Next, the period 1 differentiation step  360  may be configured as follows. 
     The primary electronic device  200  receives, from the server  210 , downlink packets for each of the plurality of parts of traffic of the secondary electronic devices  202 - 1  and  202 - 2 , in step  361  and step  371 . The primary electronic device  200  includes the MAC layer control parameter information determined for the corresponding traffic in the downlink packets of the traffic corresponding to each of the secondary electronic devices  202 - 1  and  202 - 2 , and transmits the downlink packets including MAC layer control parameter information to the secondary electronic devices  202 - 1  and  202 - 2  in step  363  and step  373 . For example, the primary electronic device  200  may use the downlink packet transmitted from the server  210  to the secondary electronic devices  201 - 1  and  202 - 2  in order to transmit the MAC layer control parameter determined for each of the traffic that uses the period 1, to the corresponding secondary electronic devices  202 - 1  and  202 - 2 . As another example, the primary electronic device  200  may use the downlink packet to be transmitted from the primary electronic device  200  to the corresponding secondary electronic device in order to transmit the MAC layer control parameter to the corresponding secondary electronic device with respect to the traffic that uses the period 1. In another example, the primary electronic device  200  may generate a separate message including the MAC layer control parameter per traffic, and may transmit the message to the corresponding secondary electronic devices  202 - 1  and  202 - 2 . 
     Each of the secondary electronic devices  202 - 1  and  202 - 2  applies the MAC layer control parameter received from the primary electronic device  200  to the MAC layer in step  365  and step  375 . For example, each of the secondary electronic devices  202 - 1  and  202 - 2  may apply the MAC layer control parameter to the MAC layer to perform media access as shown in  FIG. 10 . For example, each of the secondary electronic devices  202 - 1  and  202 - 2  may acquire a parameter indicating a medium access opportunity in a contention free period (CFP)  1000  as the MAC layer control parameter, and may perform media access in the CFP  1000  according to the acquired parameter. As another example, each of the secondary electronic devices  202 - 1  and  202 - 2  may acquire the medium access probability for each part of traffic during the contention period (CP)  1010 , and/or the length of a time period (transmission opportunity (TXOP)) at which the medium can be independently used, as the MAC layer control parameter, attempt to access the medium based on the probability of the medium access acquired in the CP  1010 , and when the medium access in the CP  1010  is successful, exclusively use the medium according to the length of the TXOP. In addition, each of the secondary electronic devices  202 - 1  and  202 - 2  may preferentially transmit a packet corresponding to high-priority traffic during a period  1020  that exclusively uses the medium according to the length of the TXOP. 
     Finally, the period 3 differentiation step  380  may be configured as follows. 
     The primary electronic device  200  determines whether the QoS control of the bearer is required for traffic using period 3 in step  381 , and makes a request for the QoS control of the corresponding bearer to the network node  208  for the traffic, which is determined to require the QoS control of the bearer, in step  383 . For example, the primary electronic device  200  may check the QoS request of each part of traffic based on the QoE state information of each part of traffic that uses the period 3, determine whether the QoS provision of the bearer used by the corresponding traffic satisfies the request of the corresponding traffic, and when the QoS provision of the bearer does not satisfy the request of the corresponding traffic, may request for the QoS change of the bearer of the corresponding traffic to the network node  208 . Here, the network node  208  may include at least one of the base station  204  and the P-GW  206 . 
       FIG. 6  is a diagram illustrating a procedure for traffic differentiation in a primary electronic device according to an embodiment of the present invention. 
     Referring to  FIG. 6 , the primary electronic device  200  may receive QoE state information per traffic from the secondary electronic device in step  601 . For example, the primary electronic device  200  may receive an IP packet to be transmitted from the secondary electronic device  202  to the network node  208  and/or the server  210 , as shown in  FIG. 9A , and acquire QoE state information of traffic according to the application from the header  901  of the received IP packet. In another example, the primary electronic device  200  may receive a separate message including QoE state information per traffic from the secondary electronic device. Here, the QoE state information per traffic may be configured as shown in Table 1 above. Further, according to an embodiment, the QoE state information may be periodically received from the secondary electronic device, and received whenever changes in the QoE state information are detected in the secondary electronic device. 
     The primary electronic device  200  acquires QoE state information per traffic for the application executed by the primary electronic device  200  in step  603 . The primary electronic device  200  may monitor an application generating traffic among applications being executed, and may acquire the QoE state information as shown in Table 1. 
     Then, in step  605 , the primary electronic device  200  determines the priority for each part of traffic based on QoE state information per traffic of the secondary electronic device and the primary electronic device. For example, the primary electronic device  200  may determine a period used by the traffic generated in the primary electronic device  200  and traffic passing through the primary electronic device  200 , and determine the priority of traffic each of the period 1 and the period 2. In another example, the primary electronic device  200  may receive application identification information from at least one secondary electronic device, display a user interface requesting the priority settings of applications supported by the primary electronic device  200  and the secondary electronic device based on the received application identification information, and then determine the priorities based on the user input through the user interface. 
     Then, the process proceeds to step  607  in which the primary electronic device  200  determines parameters for differentiating traffic per period based on the priority of each part of traffic. According to an embodiment of the present invention, the primary electronic device  200  may determine MAC layer control parameter for traffic of the period 1 in order to differentiate the traffic that uses the period 1 and process the same. For example, when medium access is performed according to the CSMA/CA wireless access technology, the primary electronic device  200  may determine parameters that allow the traffic having high-priority for the period 1 to have more transmission opportunities than traffic having low-priority for period 1 during the contention free period (CFP). In another example, when each secondary electronic device  202  generates a plurality of parts of traffic, the primary electronic device  200  may schedule such that the secondary electronic device having the greatest sum of the priorities for the plurality of parts of traffic is allowed to have more transmission opportunities. In another example, when medium access is performed according to the CSMA/CA wireless access technology, the primary electronic device  200  may determine the probability of the medium access for each part of traffic and/or the length of a time period (transmission opportunity (TXOP)) at which the medium can be independently used during a contention period on the basis of the traffic priority of the period 1. In addition, according to an embodiment of the present invention, the primary electronic device  200  may determine a transport layer control parameter for traffic using period 2 in order to differentiate the traffic using the period 2 and process the same. For example, the secondary electronic device  202  may calculate at least one parameter for adjusting the TCP transmission rate and/or the UDP transmission rate of each part of traffic based on the priority per traffic of the period 2. For example, since the TCP transmission rate is determined by three factors of the congestion window (CWND), that is Round Trip Time (RTT), RCVD, and packet loss, the primary electronic device  200  may calculate a parameter that controls at least one of the RTT, RCVD, and packet loss for TCP-type traffic based on the priority for the period 2 of each part of traffic. As another example, since the UDP transmission rate may be changed by delay, packet loss, or bandwidth, and the like, reported from an electronic device to a server, the primary electronic device  200  may calculate a parameter that adjusts at least one of the delay, packet loss, and bandwidth for UDP-type traffic, based on the priority for the period 2 of each part of traffic. 
     In step  609 , the primary electronic device  200  transmits the parameter determined through step  607  to the secondary electronic device, and applies the determined parameter to communication between the primary electronic device  200  and the secondary electronic device. For example, the primary electronic device  200  may include the MAC layer control parameter in a header  911  of an IP packet provided from the primary electronic device  200  to the secondary electronic device  202  and transmit the same, as shown in  FIG. 9B . As another example, the primary electronic device  200  may generate, for each of the secondary electronic devices, a separate message including the MAC layer control parameter of traffic corresponding to the secondary electronic device, and transmit the generated separate message to the corresponding secondary electronic device. 
     In operation  611 , the primary electronic device  200  performs the transport layer differentiation of traffic between the primary electronic device  200  and the server  210 , based on the parameter determined through operation  607 . In other words, the primary electronic device  200  may control the transmission rate of the traffic of the period 2, based on the transport layer control parameter determined based on the traffic priority of the period 2. According to an embodiment of the present invention, the transport layer control parameter for TCP traffic having a relatively low priority among traffic of the period 2 may be a parameter for decreasing the TCP transmission rate. In this case, the primary electronic device  200  may decrease the transmission rate for TCP traffic having a relatively low priority by using the increase of RTT, the decrease of the RCVD value, ECN bit and ECE bit indication, duplicated ACK transmission, and the like. In an example, as shown in  FIG. 9 , when a TCP ACK packet  921  to be transmitted from the secondary electronic device  202  to the server  210  is received, the primary electronic device  200  may indicate the ECN bit  923  in the received TCP ACK packet  921 , and may transmit, to the server  210 , the TCP ACK packet  921  added with the ECN bit  923  indication, so as to decrease the transmission rate of the corresponding TCP traffic while decreasing the size of the CWND. In addition, as shown in  FIG. 9D , when a TCP ACK packet  921  to be transmitted from the secondary electronic device  202  to the server  210  is received, the primary electronic device  200  may generate a plurality of TCP ACK packets having the same sequence number  100  as the sequence number  100  of the received TCP ACK packet  921 , and transmit, to the server  210 , the received TCP ACK packet and the generated TCP ACK packets  931 , so as to decrease the transmission rate of the corresponding TCP traffic while decreasing the size of the CWND. As another example, the transport layer control parameter for TCP traffic having a relatively high priority among the traffic of period 2 may be a parameter for increasing the TCP transmission rate. In this case, the primary electronic device  200  may use the method of splitting the TCP ACK so as to improve the transmission rate for the TCP traffic having a relatively high priority. Here, since the method of dividing the TCP ACK is a method in which the primary electronic device  200  splits one TCP ACK into n ACKs  933  of which sequence numbers are not duplicated, and transmits the same to the server  210 , as shown in  FIG. 9D , the CWND of the server  210  may increase by n, not by 1, thereby decreasing the transmission rate of the corresponding TCP traffic. In addition, according to an embodiment of the present invention, the transport layer control parameter for TCP traffic having a relatively low priority among traffic of the period 2 may be a parameter for decreasing the UDP transmission rate. In this case, the primary electronic device  200  may increase the delay and/or packet loss value reported, by the primary electronic device  200 , to the server  210 , to be indicated as a value greater than the delay and/or packet loss value for the actual network conditions, so as to decrease the transmission rate for the corresponding UDP traffic. On the contrary, with respect to UDP traffic having a relatively high priority among the traffic of the period 2, the primary electronic device  200  may decrease the delay and/or packet loss value reported, by the primary electronic device  200 , to the server  210 , to be indicated as a value smaller than the delay and/or packet loss value for the actual network conditions, so as to increase the transmission rate for the corresponding UDP traffic. According to various embodiments of the present invention, the primary electronic device  200  may transmit the transport layer control parameters determined through step  607  to the secondary electronic device  202 , and may command to the secondary electronic device  202  to directly increase or decrease the transmission rate of the corresponding traffic in step  611 . The primary electronic device  200  may include the transport layer control parameter determined for the corresponding traffic in the packet transmitted from the primary electronic device  200  to the secondary electronic device and transmit the same, or may generate a separate control message including the transport layer control parameter to each part of traffic and transmit the same to the secondary electronic device. According to an embodiment, the primary electronic device  200  may command, to the secondary electronic device  202 , controlling of the transport layer speed for traffic while controlling the transport layer speed for each part of traffic. According to an embodiment, the primary electronic device  200  may command, to the secondary electronic device  202 , controlling of the transport layer speed for traffic without controlling the transport layer speed for each part of traffic. According to still another embodiment, the primary electronic device  200  may control the transport layer speed for a particular traffic, and may command to the secondary electronic device  202  to perform transport layer speed control with respect to the remaining traffic requiring transport layer speed control. 
     In step  613 , the primary electronic device  200  performs traffic differentiation to the mobile communication network. Here, the traffic differentiation operation may be configured to steps as shown in  FIG. 8 . For example, in step  801 , the primary electronic device  200  may identify traffic in which the QoS provision of the bearer in use, for each part of traffic of the primary electronic device  200  and the secondary electronic device  202 , cannot satisfy the requirements of the corresponding traffic. Then, in step  803 , the primary electronic device  200  makes a request for changing of the QoS provision of the bearer corresponding to traffic identified as the network node  208  of the mobile communication network. For example, the primary electronic device  200  checks the QoS request of each part of traffic based on the QoE state information of each part of traffic that uses the period 3, and determines whether the QoS provision of the bearer used by the corresponding traffic satisfies the request of the corresponding traffic. When the QoS provision of a particular bearer does not satisfy the requirement of particular traffic, the primary electronic device  200  may make a request for the change of the particular bearer in order to satisfy the QoS of the particular traffic to the network node  208 . Here, the network node  208  may include at least one of the base station  204  and the P-GW  206 . Additionally, the node  208 , which has received the request for the QoS change from the primary electronic device  200 , may perform a function for changing the QoS provision of the corresponding bearer. 
     Then, the primary electronic device  200  terminates the procedure according to an embodiment of the present invention. In  FIG. 6 , step  609 , step  611 , and step  613  may be performed sequentially, or may be performed simultaneously in parallel, and the order of the same may be changed. For example, steps  609 , step  611 , and step  613  may be performed whenever traffic for the corresponding period is generated. 
       FIG. 7  is a diagram illustrating a procedure for traffic differentiation in a secondary electronic device according to an embodiment of the present invention. Here, the secondary electronic device  202  may be one of the secondary electronic devices  102 - 1 ,  102 - 2 ,  102 - 3  shown in  FIG. 1 , and the secondary electronic devices  202 - 1 ,  202 - 2 ,  202 - 2  shown in  FIG. 2 . 
     Referring to  FIG. 7 , the secondary electronic device  202  acquires QoE state information per traffic for an application being executed in the secondary electronic device, in step  701 . For example, the secondary electronic device  202  may monitor an application that generates traffic among applications being executed, and may acquire the QoE state information as shown in Table 1. 
     Then, in step  703 , the secondary electronic device  202  transmits QoE state information per traffic for each application to the primary electronic device  200 . For example, the secondary electronic device  202  may include, in the header  901  of an IP packet to be transmitted to the network node  208  and/or the server  210 , QoE state information of traffic according to an application, and may then transmit the same to the primary electronic device  200 , as shown in  FIG. 9A . In another example, the secondary electronic device  202  may generate a separate message including QoE state information per traffic and transmit the same to the primary electronic device  200 . Here, the QoE state information per traffic may be configured as shown in Table 1 above. According to an embodiment, the secondary electronic device  202  may periodically acquire QoE state information and report the same to the primary electronic device  200 . As another example, the secondary electronic device  202  may periodically monitor whether the QoE state information is changed, and may report the QoE state information to the primary electronic device  200  whenever a change in the QoE state information is detected. 
     Then, in step  705 , the secondary electronic device  202  receives a parameter for differentiating traffic per period from the primary electronic device  200 , and the process proceeds to step  707  to perform communication with the primary electronic device  200  based on the received parameter. According to an embodiment of the present invention, the secondary electronic device  202  may receive the MAC layer control parameter for differentiating traffic that use the period 1. For example, when medium access is performed according to the CSMA/CA wireless access technology, the MAC layer control parameter may include a parameter indicating a transmission opportunity for the corresponding traffic during a contention free period. As another example, when medium access is performed according to the CSMA/CA wireless access technology, the MAC layer control parameter may include a parameter indicating the media access probability for the corresponding traffic and/or the length of a time period (transmission opportunity (TXOP)) at which the medium may be independently used during a contention period. The secondary electronic device  202  may acquire, from the primary electronic device  200 , the MAC layer control parameter for the corresponding traffic in the header  911  of the IP packet as shown in  FIG. 9B . In addition, the secondary electronic device  202  may receive, from the primary electronic device  200 , a separate message including the MAC layer control parameter for at least one part of traffic of the secondary electronic device  202 . The secondary electronic device  202  may perform media access, as shown in  FIG. 10 , based on the acquired MAC layer control parameter. 
     According to various embodiments of the present invention, the secondary electronic device  202  may receive a transport layer control command or a transport layer control parameter for particular traffic in step  705 . The secondary electronic device  202  may perform a TCP-or-UDP-based transmission control mechanism as described above to control the transport layer speed of the corresponding traffic, based on the transport layer control command or the transport layer control parameter. For example, the secondary electronic device  202  may decrease the transmission rate for the corresponding TCP traffic based on the transport layer control parameter by using a method, such as the increase of RTT of the TCP traffic, decrease of the RCVD value, indication of the ECN bit and the ECE bit, and the duplicated ACK transmission. In another example, the secondary electronic device  202  may increase the delay and/or packet loss value reported to the server  210  for UDP traffic, based on the transport layer control parameter, to be indicated as a value greater than the delay and/or packet loss value for the actual network conditions, so as to decrease the transmission rate for the corresponding UDP traffic. In another example, the secondary electronic device  202  may decrease the delay and/or packet loss value reported to the server  210  for UDP traffic, based on the transport layer control parameter, to be indicated as a value smaller than the delay and/or packet loss value for the actual network conditions, so as to increase the transmission rate for the corresponding UDP traffic. 
     Then, the secondary electronic device  202  terminates the procedure according to an embodiment of the present invention. 
       FIG. 10  is a diagram illustrating an example of performing MAC layer differentiation for traffic between a primary electronic device and a secondary electronic device according to an embodiment of the present invention. Here, the primary electronic device  200  is denoted as ME1 the secondary electronic device A  202 - 1  as ME2-A, and the secondary electronic device B  202 - 2  is denoted as ME2-B. In addition, here, two parts of traffic are present between the secondary electronic device A (ME2-A) and the primary electronic device ME1 and traffic having higher-priority among the two parts of traffic is denoted as ME2-A HP, and traffic having lower-priority is denoted as ME2-A LP. In addition, it is assumed that the sum of the priorities by traffic of the secondary electronic device A (ME2-A) is higher than the sum of the priorities by the at least one part of traffic of the secondary electronic device B (ME2-B), that is, the priority of the secondary electronic device A (ME2-A) is higher than the priority of the secondary electronic device B (ME2-B). In addition, it is assumed that ME2-A HP has the highest priority among traffic of the period 1 detected by the primary electronic device ME1. 
     As shown in  FIG. 10 , the primary electronic device  200  may schedule such that the secondary electronic device ME2-A having higher priority among the secondary electronic device A (ME2-A) and the secondary electronic device B (ME2-B) has more transmission opportunities in the CFP  1000  than the secondary electronic device B (ME2-B). Illustratively, the primary electronic device ME1 may determine a time period (to ME2-A HP,  1001  and  1002 ) indicating a transmit opportunity, by the primary electronic device ME1, to the secondary electronic device A (ME2-A) and a time period (from ME2-A HP,  1003  and  1004 ) indicating a transmit opportunity, by the secondary electronic device A (ME2-A), to the primary electronic device ME1 in CFP  1000 , in order to transmit and receive ME2-A HP of the secondary electronic device A (ME2-A) having the highest priority in CFP  1000 . Accordingly, the primary electronic device ME1 and the secondary electronic device A (ME2-A) may transmit and receive the packet for the corresponding traffic ME2-A HP based on the time periods  1001  to  1004  determined in the CFP  1000 . 
     In addition, the primary electronic device  200  may schedule such that the secondary electronic device ME2-A having higher priority among the secondary electronic device A (ME2-A) and the secondary electronic device B (ME2-B) has more transmission opportunities in the CP  1010  than the secondary electronic device B (ME2-B). Illustratively, the primary electronics ME1 may determine the medium access probability and the TXOP length of the secondary electronic device A (ME2-A) having the highest priority in the CP  1010  as a value greater than the medium access probability and the TXOP length of the secondary electronic device B (ME2-B). Accordingly, the secondary electronic device A (ME2-A) may perform medium access more frequently than the secondary electronic device B (MEB-B) in the CP  1010 . In addition, a time period (TXOP,  1011  and  1012 ) for which the secondary electronic device A (ME2-A) succeeds in medium access in the CP  1010  and maintains the medium access may be set longer than a time period (TXOP,  1013  and  1014 ) for which the secondary electronic device B (MEB-B) succeeds in medium access in the CP  1010  and maintains the medium access. 
     In addition, in the CP  1010 , when each of the secondary electronic devices ME2-A and ME2-B succeeds in medium access, the primary electronic device  200  may schedule such that traffic supported by each of the secondary electronic devices ME2-A and ME2-B in the time period for maintaining the medium access may be differentially processed according to the priority. Illustratively, the primary electronics ME1 may frequently control the transmission periods ( 1021 ,  1022 ,  1023 , and  1024 ) of ME2-A HP than the transmission periods ( 1025  and  1026 ) of ME2-A LP, so that the packet of traffic ME2-A HP having higher priority among traffic (ME2-A HP, ME2-A LP) of the secondary electronic device ME2-A in the transmission periods  1011  and  1020  from the primary electronic device ME1 to the secondary electronic device A (ME2-A) in the CP  1010  is more frequently transmitted than the packet of traffic ME2-A LP having lower priority. 
       FIG. 11  is a diagram illustrating a block configuration of a primary electronic device and a secondary electronic device according to an embodiment of the present invention. 
     Referring to  FIG. 11 , the primary electronic device  200  includes an application (APP) management unit  1110 , a QoE state monitor unit  1120 , and a communication controller  1130 .  FIG. 11  illustrates only basic elements of the primary electronic device  200  for the convenience of explanation according to an embodiment of the present invention. However, the primary electronic device  200  according to an embodiment of the present invention may include other elements than the illustrated elements. 
     The application management unit  1110  includes a plurality of applications (e.g., APP1  1111  and APP2  1112 ), and performs a control operation for each application. For example, the application management unit  1110  executes and controls an application according to user control and system configuration. The application may include an application that requires communication with another electronic device and/or a server device. 
     The QoE state monitor unit  1120  monitors the application management unit  1110  and identifies an application that generates traffic among applications executed in the primary electronic device  200 . The QoE state monitor unit  1120  monitors an application that generates traffic, and generates QoE state information per traffic according to the application as shown in Table 1. For example, the QoE state monitor unit  1120  may check an input device and an output device of the primary electronic device  200 , which are associated with each application that generates traffic. In other words, the QoE state monitor unit  1120  monitors an input device that provides an input to each application that generates traffic and an output device that provides an output by each application that generates traffic, and generates device usage state information of an application as shown in Table 1. The QoE state monitor unit  1120  provides the QoE state information of the traffic according to the application to the communication controller  1130 . Here, although not shown, the primary electronic device  200  may include various input devices and output devices. For example, the primary electronic device  200  may include an input device such as a microphone, a touch sensor, a keyboard, a health information sensor (e.g., a sensor for measuring electrocardiogram, pulse, respiration, etc.), a gyro sensor, a GPS, and the like, and an output device such as a display, a speaker, an earphone, a vibrating element, and the like. 
     The communication controller  1130  controls and processes functions for communication between the primary electronic device  200  and the secondary electronic devices  202 - 1  and  202 - 2 , and for communication between the secondary electronic device  202  and the server  210 . For example, the communication controller  1130  may connect and communicate with the secondary electronic devices  202 - 1  and  202 - 2  through a communication module (not shown) that supports a short-range wireless communication technology (e.g., Wi-Fi, Bluetooth (BT), near field communication (NFC), global positioning system (GPS), and the like, and may connect and communicate with the server  210  through a communication module (not shown) that supports a cellular mobile communication technology (e.g., LTE, LTE-A, CDMA, WCDMA, UMTS, WiBro, or GSM, etc.). The communication controller  1130  may transmit, to the cellular mobile communication network node  208  and/or the server  210 , packets received from the secondary electronic devices  202 - 1  and  202 - 2  through the short-range wireless communication technology, and may transmit, to the secondary electronic devices  202 - 1  and  202 - 2 , packets received from the cellular mobile communication network node  208  and/or the server  210 . In particular, the communication controller  1130  according to an embodiment of the present invention controls the function for differentially processing all parts of traffic detected in the primary electronic device  200 , for example, traffic corresponding to the secondary electronic devices  202 - 1  and  202 - 2 , and traffic corresponding to the application being executed by the application management unit  1110  of the primary electronic device  200 . 
     The communication controller  1130  includes a priority and parameter determination unit  1131  and a traffic differentiation unit  1132 . The priority and parameter determination unit  1131  may collect QoE state information per traffic, and may determine a priority for each part of traffic based on the collected QoE parameter information as shown in Equation 1 described above. Here, the priority and parameter determination unit  1131  may acquire, from the QoE state monitor unit  1120 , the QoE state information on the traffic of an application being executed in the primary electronic device  200 , and may receive the QoE state information on traffic of each application from the secondary electronic devices  202 - 1  and  202 - 2 . As another example, the priority and parameter determination unit  1131  may determine a priority for each part of traffic based on a priority per application which is predetermined through the user interface. 
     The priority and parameter determination unit  1131  determines parameters for traffic differentiation based on the priority determined for traffic. For example, the priority and parameter determination unit  1131  may determine a MAC layer control parameter and a transport layer control parameter for traffic corresponding to a period between the primary electronic device  200  and the secondary electronic devices  202 - 1  and  202 - 2 , and may determine a transport layer parameter for traffic corresponding to a period between the primary electronic device  200  and the server  210 . 
     The traffic differentiation unit  1132  may differentially process traffic for each period based on the parameters determined by the priority and parameter determination unit  1131 . For example, the traffic differentiation unit  1132  may control traffic corresponding to the period between the primary electronic device  200  and the secondary electronic devices  202 - 1  and  202 - 2  so as to perform differentiated media access based on the MAC layer control parameters determined in the priority and parameter determination unit  1131 . In another example, the traffic differentiation unit  1132  may control the traffic corresponding to the period between the primary electronic device  200  and the server so as to adjust the transmission rate based on the transport layer parameter determined by the priority and the parameter determination unit  1131 . In order to perform traffic differentiation, the traffic differentiation unit  1132  may transmit, to the secondary electronic devices  202 - 1  and  202 - 2 , the MAC layer control parameter and/or the transport layer control parameter determined by the priority and parameter determination unit  1131 . For example, the traffic differentiation unit  1132  may add a MAC layer control parameter and/or a transport layer control parameter to a packet to be transmitted from the primary electronic device  200  to the secondary electronic devices  202 - 1  and  202 - 2 , and may transmit the same to the secondary electronic devices  202 - 1  and  202 - 2 . In another example, the traffic differentiation unit  1132  may generate a separate message including the MAC layer control parameter and/or the transport layer control parameter, and may transmit the same to the secondary electronic devices  202 - 1  and  202 - 2 . 
     Next, each of the secondary electronic device A  202 - 1  and the secondary electronic device B  202 - 2  is configured to include application (APP) management units  1150 - 1  and  1150 - 2 , QoE state monitor units  1160 - 1  and  1160 - 2 , and communication controllers  1170 - 1  and  1170 - 2 .  FIG. 11  illustrates only basic elements of the secondary electronic devices  202 - 1  and  202 - 2  for the convenience of explanation according to an embodiment of the present invention. However, the secondary electronic devices  202 - 1  and  202 - 2  according to an embodiment of the present invention may include other elements than the illustrated elements. Since the configurations of the secondary electronic devices  202 - 1  and  202 - 2  according to an embodiment of the present invention are the same, the secondary electronic device A  202 - 1  will be described below as an example. 
     The application management unit  1150 - 1  includes a plurality of applications (e.g., APP1  1151 - 1  and APP2  1151 - 2 ), and performs a control operation for each application. For example, the application management unit  1150 - 1  runs and controls applications according to user control and system configuration. The application may include an application that requires communication with other electronic device and/or a server device. 
     The QoE state monitor unit  1160 - 1  monitors the application management unit  1150 - 1  and identifies an application that generates traffic among applications that have executed in the secondary electronic device A  202 - 1 . The QoE state monitor unit  1160 - 1  monitors an application that generates traffic, and generates QoE state information per traffic according to the application, as shown in Table 1. For example, the QoE state monitor unit  1160 - 1  may check an input device and an output device of the secondary electronic device A  202 - 1 , which are associated with each application that generates traffic. In other words, the QoE state monitor unit  1160 - 1  monitors an input device that provides an input to each application that generates traffic and an output device that provides an output by each application that generates traffic, and generates device usage state information of an application as shown in Table 1. The QoE state monitor unit  1160 - 1  provides the QoE state information of the traffic according to the application to the communication controller  1130 . Here, although not shown, the secondary electronic device A ( 202 - 1 ) may include various input devices and output devices. For example, the secondary electronic device A ( 202 - 1 ) may include an input device, such as a microphone, a touch sensor, a keyboard, a health information sensor (e.g., a sensor for measuring electrocardiogram, pulse, respiration, etc.), a gyro sensor, and a GPS, and the like, and an output device such as a display, a speaker, an earphone, a vibrating element, and the like. 
     The communication controller  1170 - 1  controls and processes a function for communication between the primary electronic device  200  and the secondary electronic device A  202 - 1 . For example, the communication controller  1170 - 1  may connect and communicate with the primary electronic device  200  through a communication module (not shown) that supports a short-range wireless communication technology (e.g., Wi-Fi, Bluetooth (BT), Near Field Communication (NFC), global positioning system (GPS), and the like). The communication controller  1170 - 1  may communicate with the cellular mobile communication network node  208  and/or the server  210  through the primary electronic device  200 . Particularly, the communication controller  1170 - 1  according to an embodiment of the present invention may perform a function for transmitting, to the primary electronic device  200 , the QoE state information for traffic transmitted from the secondary electronic device A  202 - 1  to the primary electronic device  200  and traffic transmitted from the secondary electronic device A  202 - 1  through the primary electronic device  200  to the cellular mobile communication network node  208  and/or the server  210 . 
     In addition, the communication controller  1170 - 1  includes a differentiation parameter acquisition unit  1171 - 1  and a traffic differentiation unit  1172 - 1 . The differentiation parameter acquisition unit  1171 - 1  processes a function for receiving a parameter for traffic differentiation from the primary electronic device  200 . In addition, the traffic differentiation unit  1172 - 1  controls and processes a function for differentially processing traffic according to the application executed in the secondary electronic device A ( 202 - 1 ) according to the received differentiation parameter. For example, the differentiation parameter acquisition unit  1171 - 1  may receive, from the primary electronic device  200 , a MAC layer control parameter for each part of traffic according to an application executed in the secondary electronic device A  202 - 1 . In addition, the traffic differentiation unit  1172 - 1  may perform differentiated medium access for each part of traffic based on the MAC layer control parameter, as shown in  FIG. 10 . In another example, the differentiation parameter acquisition unit  1171 - 1  may receive, from the primary electronic device  200 , a transport layer control parameter for at least one part of traffic according to an application executed in the secondary electronic device A  202 - 1 . In addition, the traffic differentiation unit  1172 - 1  may control the transport layer speed for the particular traffic based on the transport layer control parameter for the particular traffic. For example, the traffic differentiation unit  1172 - 1  may decrease the transmission rate for the corresponding TCP traffic by using a method, such as, the increase of RTT of the TCP traffic, decrease of the RCVD value, indication of the ECN bit and the ECE bit, and the duplicated ACK transmission based on the transport layer control parameter. In another example, the traffic differentiation unit  1172 - 1  may increase the delay and/or packet loss value reported to the server  210  for UDP traffic, based on the transport layer control parameter, to be indicated as a value greater than the delay and/or packet loss value for the actual network conditions, so as to decrease the transmission rate for the corresponding UDP traffic. In another example, the traffic differentiation unit  1172 - 1  may decrease the delay and/or packet loss value reported to the server  210  for UDP traffic, based on the transport layer control parameter, to be indicated as a value smaller than the delay and/or packet loss value for the actual network conditions, so as to increase the transmission rate for the corresponding UDP traffic. 
     In  FIG. 11  described above, the application management unit, the QoE state monitor unit, and the communication controller are described as separate elements, however, according to another embodiment, the application management unit, the QoE state monitor unit, and the communication controller may be configured as one element. For example, functions of the application management unit, the QoE state monitor unit, and the communication controller may be performed by one controller. 
     As described above, an embodiment of the present invention has described a method and device for enhancing the quality of experience (QoE) of a user by differentially controlling application traffic of a primary electronic device and a secondary electronic device in a system where the secondary electronic device is provided with a communication service through the primary electronic device. 
     In an embodiment of the present invention described above, the QoE state information in Table 1 is an example, and embodiments of the present invention are not limited to the QoE state information in Table 1. For example, when an embodiment of the present invention is applied to a vehicle system, the QoE state information may be configured as shown in Table 2 below. For example, in the case of a vehicle system, a primary electronic device may be a smart phone of a user capable of accessing the Internet through a cellular mobile communication network and capable of communicating with a secondary electronic device through a short-range wireless communication, and the secondary electronic device may be in-vehicle devices (e.g., Infotainment system, audio device, video device, navigation device, check sensor, black box, and hands-free calling device, etc.) that support a short range wireless communication technology. 
     
       
         
           
               
               
               
             
               
                 TABLE 2 
               
               
                   
               
               
                 Items 
                 Contents 
                 Values 
               
               
                   
               
             
            
               
                 Differentiation 
                 Indicates that QoE 
                 0/1 (0: QoE 
               
               
                 (prioritization) 
                 state information is 
                 state information 
               
               
                 request flag 
                 included. That is, 
                 is not included, 
               
               
                   
                 indicates whether 
                 1: QoE state 
               
               
                   
                 QoE state information 
                 information is 
               
               
                   
                 is included in 
                 included) 
               
               
                   
                 header information of 
               
               
                   
                 the packet 
               
               
                 Application 
                 Indicates identification 
                 A value assigned 
               
               
                 ID 
                 information for 
                 randomly, as a 
               
               
                   
                 identifying an application 
                 value that is 
               
               
                   
                 corresponding to traffic 
                 unique in an 
               
               
                   
                 in a secondary 
                 electronic device 
               
               
                   
                 electronic device 
               
               
                 Device 
                 Indicates device type 
                 Audio/Video, 
               
               
                 type 
                 of a secondary 
                 Hands-free calling 
               
               
                   
                 electronic device 
                 device, Vehicle 
               
               
                   
                 corresponding to the 
                 sensor, Black 
               
               
                   
                 corresponding traffic 
                 box, Traffic 
               
               
                   
                   
                 information 
               
               
                   
                   
                 measuring device, 
               
               
                   
                   
                 Navigation 
               
               
                   
                   
                 device 
               
               
                 Traffic 
                 Indicates the urgency 
                 Urgent, real time, 
               
               
                 urgency 
                 of the corresponding 
                 active, best effort 
               
               
                   
                 traffic. 
               
               
                 Required 
                 Indicates the bandwidth 
                 A value determined 
               
               
                 bandwidth 
                 required when the 
                 by an application 
               
               
                   
                 corresponding traffic 
               
               
                   
                 is real-time or 
               
               
                   
                 multimedia transmission 
               
               
                 Required 
                 Indicates the latency 
                 A value determined 
               
               
                 latency 
                 required to guarantee 
                 by an application 
               
               
                   
                 when the corresponding 
               
               
                   
                 traffic is real-time 
               
               
                   
                 or multimedia 
               
               
                   
                 transmission 
               
               
                   
               
            
           
         
       
     
     As shown in Table 2, when an embodiment of the present invention is applied to a vehicle system, the QoE information may include a differentiation request flag, an application ID, a device type, traffic urgency, a required bandwidth, and a required latency. Here, the differentiation request flag, the application ID, the required bandwidth, and the required latency are the same as the QoE information in Table 1, and a description thereof will be omitted. On the other hand, the device type indicates a device type of the secondary electronic device for the corresponding traffic, and it may indicate that the device type of the secondary electronic device corresponds to one of various device types such as audio/video, hands-free call, vehicle sensor, black box, traffic information measurement device, and navigation device, and the like. Here, the listed device types are illustrative and not limited thereto, and may include other device types. In addition, the traffic urgency may indicate the urgency of the corresponding traffic, and in an embodiment of the present invention, the traffic urgency may be divided into four steps of Urgent, Real time, Active, and Best effort. For example, the secondary electronic device may indicate that the urgency of traffic for a failure detection signal of a vehicle should be set to “Urgent”, and the same is preferentially processed than other traffic. In another example, the secondary electronic device may set the urgency of traffic for voice call or navigation information to “Real time”, so that the corresponding traffic should be processed at a lower priority than the traffic having “Urgent”. In another example, the secondary electronic device may set the urgency of traffic for listening to music to “Active”, so that the traffic should be processed at a lower priority than the traffic having the “Urgent” or “Real time”. In another example, the secondary electronic device may set the urgency of traffic for application updates or black box storage to “Best effort”, so that the traffic should be processed at a lower priority than the traffic having the “Urgent”, “Real time” or “Active”. 
     In another example, when an embodiment of the present invention is applied to a home network system, the QoE state information may be configured as shown in Table 3 below. For example, in the case of a home network system, the primary electronic device may be an apparatus that can access the Internet through a cellular mobile communication network or a wired network, and can communicate with the secondary electronic device through a short-range wireless communication. In addition, the secondary electronic device may be in-home electronic products (e.g., a refrigerator, a washing machine, an audio, a CCTV, a vacuum cleaner, a temperature control sensor, an air conditioner, a fire alarm apparatus, etc.) that support a short-range wireless communication technology. 
     
       
         
           
               
               
               
             
               
                 TABLE 3 
               
               
                   
               
               
                 Items 
                 Contents 
                 Values 
               
               
                   
               
             
            
               
                 Differentiation 
                 Indicates that QoE 
                 0/1 (0: QoE 
               
               
                 (prioritiza- 
                 state information is 
                 state information 
               
               
                 tion)request 
                 included. That is, 
                 is not included, 
               
               
                 flag 
                 indicates whether QoE 
                 1: QoE state 
               
               
                   
                 state information 
                 information is 
               
               
                   
                 is included in header 
                 included) 
               
               
                   
                 information of the 
               
               
                   
                 corresponding packet 
               
               
                 Application 
                 Indicates 
                 A value assigned 
               
               
                 ID 
                 identification 
                 randomly, as a 
               
               
                   
                 information for 
                 value that is 
               
               
                   
                 identifying an 
                 unique in an 
               
               
                   
                 application 
                 electronic device 
               
               
                   
                 corresponding 
               
               
                   
                 to the corresponding 
               
               
                   
                 traffic in a secondary 
               
               
                   
                 electronic device 
               
               
                 Device 
                 Indicates device type 
                 Refrigerator. 
               
               
                 type 
                 of a secondary 
                 washing 
               
               
                   
                 electronic device 
                 machine, audio. 
               
               
                   
                 corresponding to the 
                 CCTV, vacuum 
               
               
                   
                 corresponding traffic 
                 cleaner, 
               
               
                   
                   
                 temperature 
               
               
                   
                   
                 control sensor, 
               
               
                   
                   
                 air conditioner, 
               
               
                   
                   
                 fire alarm 
               
               
                   
                   
                 apparatus, etc. 
               
               
                 Traffic 
                 Indicates the urgency 
                 Urgent, real time, 
               
               
                 urgency 
                 of the corresponding 
                 active, best effort 
               
               
                   
                 traffic 
               
               
                 Required 
                 Indicates the 
                 A value determined 
               
               
                 bandwidth 
                 bandwidth required if the 
                 by an application 
               
               
                   
                 corresponding traffic 
               
               
                   
                 is real-time or 
               
               
                   
                 multimedia transmission. 
               
               
                 Required 
                 Indicates the latency 
                 A value determined 
               
               
                 latency 
                 required to guarantee 
                 by an application 
               
               
                   
                 if the corresponding 
               
               
                   
                 traffic is real-time 
               
               
                   
                 or multimedia transmission 
               
               
                   
               
            
           
         
       
     
     As shown in Table 2, when an embodiment of the present invention is applied to a home network system, the QoE information may include a differentiation request flag, an application ID, a device type, traffic urgency, a required bandwidth, and a required latency. Here, the differentiation request flag, the application ID, the required bandwidth, and the required latency are the same as the QoE information in Table 1, and a description thereof will be omitted. On the other hand, the device type indicates a device type of the secondary electronic device for the corresponding traffic, and it may indicate that the device type of the secondary electronic device corresponds to one of various device types, such as a refrigerator, a washing machine, an audio, a CCTV, a vacuum cleaner, a temperature control sensor, an air conditioner, a fire alarm apparatus, and the like. Here, the listed device types are illustrative and not limited thereto, and may include other device types. In addition, the traffic urgency may indicate the urgency of the corresponding traffic, and in an embodiment of the present invention, the traffic urgency may be divided into four steps of Urgent, Real time, Active, and Best effort. For example, the secondary electronic device may set the urgency of traffic for a signal indicating an emergency (e.g., a fire occurrence signal, an intrusion alert signal) to “Urgent”, so that the traffic should be preferentially processed over other traffic. In another example, the secondary electronic device may set the urgency of traffic for CCTV, listening to music, or watching VOD to “Real time”, so that the traffic should be processed with a lower priority than the traffic having “Urgent”. In another example, the secondary electronic device may set the urgency of traffic for listening to music to “Active”, so that the traffic should be processed at a lower priority than the traffic having the “Urgent” or “Real time”. In another example, the secondary electronic device may set the urgency of traffic for application updates to “Best effort”, so that the traffic should be processed at a lower priority than other parts of traffic having the “Urgent”, “Real time” or “Active”. 
     Although the present invention has been described by the restricted embodiments and the drawings as described above, the present invention is not limited to the aforementioned embodiments and various modifications and alterations can be made from the descriptions by those skilled in the art to which the present invention pertains. 
     The operations according to embodiments of the present invention may be implemented by a single controller. In this case, program instructions for performing various computer-implemented operations may be stored in a computer-readable medium. The computer readable medium may include a program command, a data file, a data structure, and the like independently or in combination. The program command may be things specially designed and configured for the present invention, or things that are well known to and can be used by those skilled in the related art. For example, the computer readable recoding medium includes magnetic media such as a hard disk, a floppy disk, and a magnetic tape, optical media such as a CD-ROM and a DVD, magneto-optical media such as a floptical disk, and hardware devices such as a ROM, RAM, and a flash memory, which are specially constructed in such a manner that they can store and execute a program command. Examples of the program command include a machine language code generated by a compiler and a high-level language code executable by a computer through an interpreter and the like. When all or some of the base stations or relays as described in the present invention are implemented by a computer program, a computer-readable recording medium in which the computer program is stored also falls within the scope of the present invention. Therefore, the scope of the present invention should not be defined as being limited to the embodiments, but should be defined by the appended claims and equivalents thereof.