Source: https://patents.google.com/patent/JP2015130591A/en
Timestamp: 2020-03-30 08:24:34
Document Index: 448389127

Matched Legal Cases: ['art 12', 'art 61', 'art 62', 'art 63', 'art 64', 'art 80']

JP2015130591A - Wireless connection apparatus and wireless connection method - Google Patents
Wireless connection apparatus and wireless connection method Download PDF
JP2015130591A
JP2015130591A JP2014001079A JP2014001079A JP2015130591A JP 2015130591 A JP2015130591 A JP 2015130591A JP 2014001079 A JP2014001079 A JP 2014001079A JP 2014001079 A JP2014001079 A JP 2014001079A JP 2015130591 A JP2015130591 A JP 2015130591A
JP2014001079A
多加夫 板津
Takao Itatsu
2014-01-07 Application filed by アルパイン株式会社, Alpine Electronics Inc filed Critical アルパイン株式会社
2014-01-07 Priority to JP2014001079A priority Critical patent/JP2015130591A/en
2015-07-16 Publication of JP2015130591A publication Critical patent/JP2015130591A/en
PROBLEM TO BE SOLVED: To provide a wireless connection apparatus and a wireless connection method capable of switching an access point to be connected wirelessly, in consideration of a communication data amount and a communication generation state.SOLUTION: An on-vehicle apparatus 1 comprises: a controller 50 as application execution means for selectively executing plural applications; an access point selection unit 61 which, when an application is started, selects an access point of wireless communication in accordance with a priority order set corresponding to the started application; and an access point connection unit 63 which connects with the access point selected by the access point selection unit 61.
The present invention relates to a wireless connection apparatus and a wireless connection method that can be connected to both an external access point and a portable access point.
Conventionally, when an external access point is detected when both the external access point and the in-vehicle access point can be connected wirelessly, and the wireless terminal is connected to the in-vehicle access point, the wireless connection destination is accessed externally. A configuration that switches to points is known (see, for example, Patent Document 1).
JP 2011-234218 A
By the way, in the configuration disclosed in Patent Document 1 described above, an external access point is always preferentially selected at a place where it can be connected to an external access point, so even if the amount of data transmitted and received is small, external access Switching to a point occurs, and there is a problem that the communication time becomes longer when the time required for connection switching is taken into consideration. In addition, when the communication range of the external access point is narrow, there is a problem that switching occurs between the external access point and the in-vehicle access point in a short time, and communication becomes unstable. These problems can be improved by using an external access point and an in-vehicle access point (portable access point) in consideration of the amount of communication data that changes depending on the application that requires communication and the occurrence of communication. In the past, such communication has not been performed.
The present invention was created in view of the above points, and an object of the present invention is to provide a wireless connection device capable of switching an access point to be wirelessly connected in consideration of a communication data amount and a communication occurrence state. And providing a wireless connection method.
In order to solve the above-described problem, the wireless connection device of the present invention is set corresponding to an application execution unit that selectively executes a plurality of applications, and when the application is started by the application execution unit. Access point selecting means for selecting an access point for wireless communication according to the priority order, and access point connecting means for connecting to the access point selected by the access point selecting means.
The wireless connection method of the present invention includes a step of selectively executing a plurality of applications by the application execution means, and a priority set corresponding to the started application when the application is started by the application execution means. , A step of selecting an access point for wireless communication by the access point selection means, and a step of connecting to the access point selected by the access point selection means by the access point connection means.
Even when the amount of communication data and the state of occurrence of communication differ for each application, wireless connection can be established by switching the access point for each application. As a result, it is possible to prevent the communication time from becoming unnecessarily long or the communication from becoming unstable, as occurs when the priority order of the access points is fixed.
In addition, the above-mentioned access points include a fixed access point whose installation position is fixed and a portable access point that can be moved as the user moves, and the access point selection means provides fixed access for each application. It is desirable to select either a point or a portable access point. This allows you to connect to a portable access point for applications where communication occurs constantly or frequently, or where the amount of communication data is small, and to fixed access points for applications where a large amount of communication occurs temporarily. Access points can be selected according to individual applications.
Moreover, it is desirable that the above-described priority order is set in advance for each application. Since the amount of communication data and the state of occurrence of communication can be predicted in advance depending on the contents of the application, by setting the priority order in advance, the processing can be simplified as compared with the case where the priority order is set each time.
Moreover, it is desirable that the above-described priority order is set according to the past communication amount for each application. This makes it possible to connect by selecting a fixed access point for an application with a large amount of communication data and selecting a portable access point for other applications.
In addition, when the above-described priority is set in advance for each application, the set contents are used. When the priority is not set in advance, the priority is set according to the past communication amount for each application. Is desirable. As a result, an access point is selected according to this priority for an application with a preset priority, and an access point according to a priority set according to a past data amount for an application with no preset priority. Thus, it is possible to select an appropriate access point regardless of the priority setting status.
In addition, it is desirable that the access point connection unit described above is connected to the portable access point prior to application activation by the application execution unit. As a result, when the priority of the portable access point is high, it is possible to shorten the time until communication is started via the access point when the application is executed.
The access point detecting means for detecting the fixed access point described above is further provided, and the access point connecting means is a portable access point instead of the fixed access point when the access point detecting means cannot detect the fixed access point. It is desirable to connect to. As a result, even if the fixed access point is out of the communication area, communication can be performed via the portable access point as an alternative, and communication becomes impossible when the fixed access point is selected. Can be prevented.
It is a figure which shows the structure of the vehicle-mounted apparatus of one Embodiment. It is explanatory drawing of the access point connectable with a vehicle-mounted apparatus. 10 is a flowchart showing an operation procedure for selectively connecting a wireless line according to the priority order of each application when the application is activated (when each processing unit is activated). It is a flowchart which shows the operation | movement procedure which performs confirmation and switching of a radio | wireless line at the time of application end (at the time of completion | finish of each process part). 10 is a flowchart showing an operation procedure of a modified example in which connection of a wireless line is selectively performed according to a past communication amount for each application when the application is activated. It is a flowchart which shows the operation | movement procedure of the modification at the time of completion | finish of an application. 10 is a flowchart showing an operation procedure of another modified example in which connection of a wireless line is selectively performed in accordance with a past communication amount for each application or a preset priority order when the application is activated.
Hereinafter, an in-vehicle device according to an embodiment to which a wireless connection device of the present invention is applied will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of an in-vehicle device according to an embodiment. As shown in FIG. 1, the in-vehicle device 1 includes an operation unit 10, a touch panel 12, an input control unit 14, a display processing unit 20, a display device 22, a digital-analog converter (D / A) 30, a speaker 32, and a control unit. 50, a hard disk device (HDD) 70, and a wireless local area network (LAN) interface unit (I / F) 80.
The operation unit 10 is for receiving an operation by the user on the in-vehicle device 1 and includes various operation keys, operation switches, operation knobs, and the like arranged around the display device 22. In addition, when various operation screens and input screens are displayed on the display device 22, the display items of the operation screens and input screens can be obtained by directly pointing a part of these operation screens and input screens with a finger or the like. The touch panel 12 for detecting the position of the pointed finger or the like is provided in order to enable an operation using such an operation screen or an input screen. Instead of using the touch panel, a part of the operation screen or the input screen may be selected according to a user instruction using a remote control unit or the like. The input control unit 14 monitors the operation unit 10 and the touch panel 12 and determines the operation content thereof.
The display processing unit 20 outputs video signals for displaying various operation screens, input screens, and the like, displays these screens on the display device 22, and also displays video screens corresponding to Internet screens and moving images. Are displayed on the display device 22. The display device 22 is installed in front of the center of the driver seat and the passenger seat, and is configured using, for example, a liquid crystal display device (LCD).
The digital-analog converter 30 converts audio data and music data generated along with moving image reproduction and music reproduction into an analog audio signal and outputs the analog audio signal from the speaker 32. In practice, an amplifier for amplifying a signal is connected between the digital-analog converter 30 and the speaker 32, but this amplifier is omitted in FIG. Further, the combination of the digital-analog converter 30 and the speaker 32 is provided for the number of reproduction channels, but only one set is shown in FIG.
The control unit 50 controls the entire vehicle-mounted device 1 and performs various processes such as Internet connection, mail transmission / reception, and moving image reproduction. A predetermined application (program) stored in a ROM, a RAM, or the like is stored in the control unit 50. Various processing units are realized by execution by the CPU.
The wireless LAN interface unit 80 is a communication device for LAN connection with an external wireless device using a predetermined wireless frequency band. For example, in the present embodiment, at least the STA (Station) mode is supported.
The control unit 50 described above includes an Internet processing unit 51, a mail processing unit 52, a radio processing unit 53, a navigation processing unit 54, a video content processing unit 55, a software download (DL) processing unit 56, and an access point (AP) selection. Unit 61, access point (AP) detection unit 62, access point (AP) connection unit 63, and traffic detection / storage unit 64.
The internet processing unit 51 is realized by executing an internet connection application. The Internet processing unit 51 has a web browser function, performs Internet connection via the wireless LAN interface unit 80 using the STA mode described above, and transmits / receives data to / from various servers.
The mail processing unit 52 is realized by executing a mail processing application. The mail processing unit 52 creates a mail or performs a process of transmitting / receiving mail by connecting to a mail server via the wireless LAN interface unit 80 using the STA mode described above.
The radio processing unit 53 is realized by executing a radio reception application. The radio processing unit 53 obtains program streaming data distributed from a specific AM broadcast station or FM broadcast station from a server via the Internet, outputs sound of the broadcast program from the speaker 32, and displays a program-related screen. 22 is displayed.
The navigation processing unit 54 is realized by executing a navigation application. For example, the navigation processing unit 54 acquires map data necessary for displaying a map image around the vehicle position from the server via the Internet, and displays the map image on the display device 22.
The video content processing unit 55 is realized by executing a video application. For example, the video content processing unit 55 acquires video data distributed from a video distribution server via the Internet, displays the video on the display device 22, and outputs sound corresponding to the video from the speaker 32.
The software download processing unit 56 is realized by executing a download application. The software download processing unit 56 downloads the application purchased at the application purchase site via the Internet.
The access point selection unit 61 selects an access point for wireless communication according to the priority set corresponding to the activated application when the control unit 50 activates the application (when various processing units are activated).
FIG. 2 is an explanatory diagram of an access point that can be connected to the in-vehicle device 1. As shown in FIG. 2, in this embodiment, as an access point, the mobile router 2 as a portable access point that can move as the user moves, and external access as a fixed access point with a fixed installation position Point (AP) 3 is included. Although the mobile router 2 can always be connected, the communication speed is slower than that of the external access point 3 and the amount of communication may be limited. On the other hand, the external access point 3 has a high communication speed and is not limited (or rarely limited), but has a fixed installation position, so the communication range includes the vehicle position. It cannot be used if it is not.
The access point selection unit 61 described above selects either the mobile router 2 or the external access point 3 according to the priority for each application. By the way, this priority order may be (1) preset for each application, (2) set according to the past traffic for each application, or (3) a combination of these. . Specific examples in each case will be described later.
The access point detection unit 62 performs a frequency sweep (scan) in a predetermined frequency range defined by the wireless communication standard, and detects an external access point 3 capable of communication.
The access point connection unit 63 performs wireless connection via the wireless LAN interface unit 80 to the access point selected by the access point selection unit 61, that is, either the mobile router 2 or the external access point 3.
The communication amount detection / storage unit 64 detects and stores the communication amount transmitted / received (or received) by wireless communication from the start to the end of this time at the end of execution of the application (at the end of the operation of various processing units). . This communication amount is stored for each application. The communication amount may be an average value for the past several times, instead of updating the value for each execution of the application.
The control unit 50 described above corresponds to the application execution unit, the access point selection unit 61 corresponds to the access point selection unit, the access point connection unit 63 corresponds to the access point connection unit, and the access point detection unit 62 corresponds to the access point detection unit.
The in-vehicle device 1 of the present embodiment has such a configuration, and the operation thereof will be described next. FIG. 3 is a flowchart showing an operation procedure for selectively connecting a wireless line according to the priority order of each application when the application is activated (when each processing unit is activated).
In this embodiment, before starting various applications, for example, when the accessory switch is turned on and the vehicle-mounted device 1 is turned on, the access point connection unit 63 connects to the mobile router 2. In the following description, the wireless line secured by the connection of the mobile router 2 will be referred to as a “mobile line”.
Further, the priority order of access points to be connected is set in advance for each application (each processing unit). For example, the Internet processing unit 51, the mail processing unit 52, the radio processing unit 53, and the navigation processing unit 54 described above generate communication while the vehicle is traveling or the amount of communication is relatively small. Connection to mobile rotation is prioritized. On the other hand, regarding the video content processing unit 55 and the software download processing unit 56, communication occurs while the vehicle is stopped, or the communication amount is large, so that connection to the external access point 3 is given priority.
Note that after the Internet processing unit 51 is activated, the video content processing unit 55 and the software download processing unit 56 may be activated in parallel with this operation (or as part of the operation). In such a case, the following operation of the present invention is performed assuming that a new application is activated when the video content processing unit 55 and the software download processing unit 56 are activated.
When a certain application is activated, the access point selection unit 61 determines whether or not the activated application has priority on the mobile line (mobile router 2) (step 100). If the mobile line has priority, an affirmative determination is made and the original operation of this application is continued.
On the other hand, if the mobile line is not preferred (external access point 3 is preferred), a negative determination is made in the determination of step 100. Next, the access point detection unit 62 scans a predetermined frequency range (step 102) and determines whether or not the external access point 3 has been detected (step 104). When the external access point 3 cannot be detected (when there is no vehicle in the communication range of the external access point 3), a negative determination is made and the original operation of this application is continued.
If the external access point 3 is detected, an affirmative determination is made in step 104. Next, the access point connection unit 63 switches the connection destination from the mobile router 2 so far to the external access point 3, and performs authentication processing with the external access point 3 (step 106). Thereafter, the original operation of the started application is continued.
FIG. 4 is a flowchart showing an operation procedure for confirming and switching a wireless line at the end of an application (at the end of each processing unit).
After the application operation is completed, the access point selection unit 61 determines whether or not it is currently connected to the mobile line (mobile router 2) (step 110). In the case of a mobile line, an affirmative determination is made, and a series of operations related to this application ends.
If the application is connected to the external access point 3 at the end of the operation of the application, a negative determination is made in the determination in step 110. Next, the access point connection unit 63 switches the connection destination from the external access point 3 so far to the mobile router 2 and performs authentication processing with the mobile router 2 (step 112). Thereafter, a series of operations related to this application is completed.
As described above, in the in-vehicle device 1 of the present embodiment, since the priority order of the wireless line to be used for each application is set in advance, even if the communication data amount and the communication occurrence state are different for each application. The wireless connection can be established by switching the access point for each application. As a result, it is possible to prevent the communication time from becoming unnecessarily long or the communication from becoming unstable, as occurs when the priority order of the access points is fixed.
Specifically, the access point includes an external access point 3 whose installation position is fixed, and a mobile router 2 that can move as the user moves. Every time, either the external access point 3 or the mobile router 2 is selected. As a result, communication that occurs constantly or frequently, or an application with a small amount of communication data is connected to the mobile router 2, an application that temporarily generates a large amount of communication is connected to the external access point 3, etc. Access points can be selected according to individual applications.
In addition, since the amount of communication data and the state of occurrence of communication can be predicted in advance depending on the contents of the application, by setting the priority order in advance, the processing can be simplified compared to the case where the priority order is set each time. it can.
Prior to the activation of the application, connection to the mobile router 2 is performed. Thereby, when the priority of the mobile router 2 is high, it is possible to shorten the time until communication is started via the access point when the application is executed.
Further, when the external access point 3 has a high priority, even if the external access point 3 is out of the communication area, communication can be performed via the mobile router 2 instead. It is possible to prevent communication from being disabled when 3 is selected.
In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. In the above-described embodiment, the priority order of the access points to be connected is set in advance for each application (each processing unit). However, for applications in which the priority order is not set in advance, This priority order may be determined at the time of application activation according to the amount of communication.
FIG. 5 is a flowchart showing an operation procedure of a modified example in which the connection of the wireless line is selectively performed according to the past communication amount for each application when the application is activated. The operation procedure shown in FIG. 5 is different from the operation procedure shown in FIG. 3 in that step 100 is replaced with steps 200 and 202. Hereinafter, the replaced steps 200 and 202 will be described.
When an application is started, the access point selection unit 61 reads the past communication amount of the application stored in the communication amount detection / storage unit 64 (step 200), and whether or not the communication amount is equal to or less than a switching reference value. Is determined (step 202). If it is below the switching reference value, an affirmative determination is made and the original operation of this application is continued.
On the other hand, when the past communication amount is larger than the switching reference value, a negative determination is made in the determination of step 202. In this case, the process proceeds to step 102, and a scanning operation for detecting an external access point is performed.
FIG. 6 is a flowchart showing the operation procedure of the modified example at the end of the application. In the operation procedure shown in FIG. 6, step 210 is added to the operation procedure shown in FIG. In this step 210, the traffic detection / storage unit 64 detects and stores the traffic from the current application activation to the end. Thereafter, the process proceeds to step 110, where mobile line connection determination is performed.
In this way, by using the priority order set according to the past communication amount for each application, the external access point 3 is selected for an application with a large amount of communication data, and the mobile router 2 for other applications. It becomes possible to perform wireless connection by selecting.
FIG. 7 is a flowchart showing the operation procedure of another modified example in which the connection of the wireless line is selectively performed according to the past communication amount for each application or a preset priority order when the application is activated. The operation procedure shown in FIG. 7 is a combination of the operation procedure shown in FIG. 3 and the operation procedure shown in FIG. 5, and step 300 is added in addition to the steps included in these operation procedures. In step 300, the access point selector 61 determines whether or not the priority order of access points is set in advance. If it is set, an affirmative determination is made, and the operations after step 100 shown in FIG. 3 are performed. If the priority order is not set in advance, a negative determination is made in the determination in step 300, and the operations after step 200 shown in FIG. 5 are performed. At the end of the application, the communication amount is detected and stored and switched to the mobile line in accordance with the operation procedure shown in FIG.
As described above, an access point is selected according to the priority order for an application with a preset priority order, and an access point according to a priority order set according to a past communication amount is selected for an application with no preset priority order. A point can be selected, and an appropriate access point can be selected regardless of the priority setting status.
Moreover, although embodiment mentioned above demonstrated the vehicle-mounted apparatus 1 mounted in the vehicle, this invention is applicable also to the portable terminal device which has the function similar to the vehicle-mounted apparatus 1, or similar. For example, the present invention can be applied to a case where a mobile terminal 2 or a tablet terminal device that does not have a telephone connection function performs wireless connection by selectively using the mobile router 2 and the external access point 3.
As described above, according to the present invention, even when the amount of communication data and the state of occurrence of communication differ from application to application, the access point can be switched for each application for wireless connection. As a result, it is possible to prevent the communication time from becoming unnecessarily long or the communication from becoming unstable, as occurs when the priority order of the access points is fixed.
DESCRIPTION OF SYMBOLS 1 In-vehicle apparatus 10 Operation part 12 Touch panel 22 Display apparatus 50 Control part 61 Access point selection part 62 Access point detection part 63 Access point connection part 64 Traffic detection / storage part 80 Wireless LAN interface part (I / F)
An application execution means for selectively executing a plurality of applications;
An access point selecting means for selecting an access point for wireless communication according to a priority set in correspondence with the activated application when the application is started by the application executing means;
Access point connection means for connecting to the access point selected by the access point selection means;
A wireless connection device comprising:
The access point includes a fixed access point whose installation position is fixed, and a portable access point that can move as the user moves,
The wireless access device, wherein the access point selection means selects either the fixed access point or the portable access point for each application.
The wireless connection apparatus, wherein the priority order is preset for each application.
The wireless connection apparatus according to claim 1, wherein the priority order is set according to a past communication amount for each application.
If the priority is set in advance for each application, the set contents are used. If the priority is not set in advance, the priority is set according to the past communication amount for each application. A wireless connection device.
The wireless connection device, wherein the access point connection means connects to the portable access point prior to activation of the application by the application execution means.
In any one of Claims 2-6,
An access point detecting means for detecting the fixed access point;
The access point connection means connects to the portable access point instead of the fixed access point when the fixed access point cannot be detected by the access point detection means.
Selectively executing a plurality of applications by an application execution means;
A step of selecting an access point for wireless communication by an access point selection unit according to a priority set corresponding to the activated application when the application is started by the application execution unit;
Connecting to the access point selected by the access point selection means by an access point connection means;
A wireless connection method comprising:
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