PATENT ABSTRACT
This invention reveals an indoor network connection device. This device is combined by indoor light source and master node module, which can effectively decrease the cost of setting up indoor web facilities and make ideal of smart architecture come true. In addition, setting up these web connecting devices can easily let other web users in and even to become micro-network achieving the goal of sharing resource.

PATENT DESCRIPTION
FIELD OF THE INVENTION 
       [0001]    The present invention relates generally to the field of an indoor network device. More specifically the present invention makes good use of building itself indoor light sources to combine a master node module that has network function and corresponding slave node to set up indoor wireless network environment. 
       BACKGROUND OF INVENTION 
       [0002]    Smart architecture, as the word said, is setting up network in a building and connecting every node device through Internet to achieve control and information exchange. Internet Of Things, IOT, or Machine to Machine, M2M, are some examples. The establishment of IOT now in use mainly utilizes Zigbee, Bluetooth, WiFi, or  3 G. However, each of them has its advantage and disadvantage. Power consumption, cost, penetration rate, convenience of setting up, flexibility, and mesh networking capability should all be considered, especially penetration rate. If penetration rate is high, it is easy to achieve “every object has a communication node,” which is the essential part of IOT. On the contrast, if there&#39;s no ubiquitous communicable node, then there&#39;s no IOT. 
         [0003]    Bluetooth or WiFi are the most popular choices for communication. However, they only exist in computers, some computer interface peripherals, notebooks, mobile phones, tablets, etc. Normal electrical appliances don&#39;t have Bluetooth or WiFi. Even if some appliances have Bluetooth or WiFi, these appliances are not be placed everywhere in a building. Thus it is not enough to become mesh network. 
         [0004]    Currently, TV and refrigerator are necessary ‘appliances’ in every family but most of them don&#39;t have network communication function. As a consequence, there is a big improvement gap of establishment of IOT or M2M. Maybe, in the future, web TV and web refrigerator will become necessities in every family step by step, so using web TV and web refrigerator as server and router is a reasonable assumption. However, there is not a web TV or a web refrigerator in every room and they are expensive. Thus, using web TV and web refrigerator as server and router to establish IOT is not possible. To overcome the problem, proposing a new and convenient network node which uses existed facility to construct IOT is needed to make every kinds of indoor space be easily to set up IOT instead of buying network routing facilities. 
       SUMMARY 
       [0005]    Due to previous explanation, the present invention is to provide a low cost and high penetration rate, network communication device. People don&#39;t need to spend extra money to buy network routing facilities but can easily set up an indoor network. 
         [0006]    According to one embodiment of the present invention which is based on indoor light sources and combines with master node module that has network connection function, it can connect with outer internet network. Indoor devices with master node module can use network connection devices to become Piconet. 
         [0007]    According to another embodiment of the present invention which is based on indoor wireless connection device, each of them is placed in every single space in the architecture and accommodates network users in the space to become indoor wireless system. Each user in every single space uses first wireless network communication means to communicate with one another and each single space use second wireless network communication means to communicate. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0008]    The detailed drawings of this invention will be fully understood from the following descriptions wherein: 
           [0009]      FIG. 1  is a schematic diagram showing an exemplary network connection device based on light resource. 
           [0010]      FIG. 2  is a schematic diagram showing another exemplary network connection device based on light resource. 
           [0011]      FIG. 3  is a schematic diagram showing the other exemplary network connection device based on light resource. 
           [0012]      FIG. 4  is an embodiment of a kind of indoor wireless network system. 
       
    
    
       [0013]    The following description should be read with reference to the drawings, in which like elements in different drawings are numbered in like fashion. The drawings, which are not necessarily to scale, depict selected embodiments and are not intended to limit the scope of the invention. Although examples of construction, dimensions, and materials are illustrated for the various elements, those skilled in the art will recognize that many of the examples provided have (suitable alternatives that may be utilized. 
       DETAILED DESCRIPTION OF THE INVENTION 
       [0014]    First of all, referring to  FIG. 1 , it shows the doss-section diagram of one embodiment of the present invention, network connection device  10  based on light source. It includes an illumination control circuit  110 , a lampshade  120 , a power conversion module  130 , a holder  140 , a master node module  150 , a detection circuit  160 , a light source  170 , a battery module  180  and a light source standard connector  190 . The advantages of using light source as a basis for network connection device or IOT node are: 1. no more modification of the original interior decoration, but can set indoor network at any time in old or new building, no additional wiring is needed; 2. no power cord supply issues; 3. light source is usually located at the center and the highest position of room, which can transmit and receive signals without being blocked and the antenna design is easy; 4. can combine with environmental illumination sensor to determine the degree of outside brightness and decide the number of turn-on light source, providing illumination with smart energy conservation. 
         [0015]    Please continue to refer to  FIG. 1 . The master node module  150  has function of the wireless network connection; its interior is mainly divided into many parts: a control unit, a transceiver, and an antenna (the above are not shown in the figure). The master node module  150  can continuously radiate electromagnetic wave of specific frequencies in a space, and collect web information and manage communication protocol with control unit. In the application of a radio frequency transmission system, the master node module  150  is mainly used as electromagnetic energy emitter, coupled with other slave nodes being the receiving objects to become the broadcast-type radio frequency transmission system. Users or devices that comply with communication protocol can join as slave node if detected and identified by the master node module  150 . Communication protocol can be (but not limited to) Bluetooth that is set in accordance with Personal Area Network (Wireless PAN) technical standards and WiFi transmission that based on the wireless LAN (WLAN) technology standards. In response to the different characteristics of users, for example, users may be persons with hand-held portable communication devices, or computer peripherals, or home appliances, etc. Master node module  150  can automatically use the network addressing function (such as an IPv6 Network Protocol version 6) to divide users into different groups. Users in the same group use first means of transmission to communicate with one another. In one application, the first transmission is Bluetooth. Users in the same group form a Piconet. In addition, the master node modules  150  in different indoor space use second transmission mode to communicate with one another. In another application, the second transmission means is WiFi transmission. 
         [0016]    Continuing to refer to  FIG. 1 , the detection circuit  160  can automatically detect the environment changes in a space, for example, if a person wearing a Bluetooth device walks into the space, the detection circuit  160  can detect the signal changes and determine the user that wears a Bluetooth device is a moving person rather than a static object. The detection data can be uploaded to the network and send a drive signal to the illumination control circuit  110 , so when the person enters the room, the lighting source  170  will be automatically on. In addition, the detection circuit  160  can also detect other environmental changes, such as the brightness of an indoor space, temperature, humidity, gas composition, suspended or airborne pathogens and so on. The detected information can be uploaded to the network by the master node module  150  to achieve the purpose of resource sharing and remote monitoring. 
         [0017]    Please continue to refer to  FIG. 1 . In one embodiment, the light source  170  is a light emitting diode (LED). The illumination control circuit  110  has a Pulse Width Modulation (PWM) function which can control the color and brightness of the light source  170  output. In an application, the illumination control circuit  110  contains a chip with hardware to provide the PWM function; in other applications, he illumination control can be reached by writing firmware, or connecting to an external PWM circuit. The lampshade  120  is used to protect the internal components of network connection device  10  and make the light source  170  have uniform illumination, and the material of lampshade  120  can make the wireless signals transmitted by master node module  150  easily penetrate. The power conversion module  130  can convert AC power into DC power, for example, output 2˜5V DC power to provide light source  170  and the master node module  150  to use. When there is a power outage or power off, the battery module  180  provides, direct current to the light source  170  and the master node module  150  to use. For each of these components, the holder  140  provides protection and a fixed function. Network connection device  10  is installed to the lamp holder through a standard connector  190  of light source. The installation way can but is not limited to rotating or snapping, and this light source standard connector  190  can be regulated in accordance with existing laws and a variety of lamp holders manufacturing. 
         [0018]    Referring to  FIG. 2 , network connection device  20  structure in  FIG. 2  is similar to  FIG. 1 , it also includes an illumination control circuit  210 , a lampshade  220 , a power conversion module  230 , a holder  240 , a master node module  250 , a detection circuit  260 , a light source  270 , a battery module  280  and a light source standard connector  290 . The difference between  FIG. 2  and  FIG. 1  is that the light source  170  in  FIG. 1  is a light source with lower power, emitting a relatively low heat. Thus the holder  140  can be made of plastic material. The light source  270  in  FIG. 2  is a light source with higher power, emitting a relatively high heat, the holder  240  may be made of metal material, resulting in the wireless signal sent by the master node module  250  can&#39;t penetrate. Under such circumstances, the master node module  250  can be set out of the holder  240 , making the wireless signal sent by the master node module  250  not be blocked by the holder  240  made of metal material. Take  FIG. 2  for example. We can use pin socket to elevate master node module  250  above the light source  270  and the illumination control circuit  210 . In addition, the master node module  270  may still be fixed on the holder  240 , but its antenna (not shown in the figure) may extend out of the light source  270 . Network connection device  20  is installed to the lamp holder through a standard connector  290  of light source. The installation way can be, but is not limited to rotating or snapping, and this light source standard connector  290  can be regulated in accordance with existing laws and a variety of lamp holders manufacturing. 
         [0019]    Referring to  FIG. 3 , it shows cross-sections of network connection device  30  based on the light source in accordance with another embodiment of this invention. The network connection device  30  comprises a lighting control circuit  310 , a lampshade  320 , a power conversion module  330 , a holder  340 , a master node module  350 , a detection circuit  360 , a light source  370 , a battery module  380  and a light source standard connector  390 . Comparing with the above-mentioned embodiments, this embodiment sets the power conversion module  330 , the master node module  350 , the detection circuit  360  and the battery module  380  in the lamp holder  301 . This embodiment may apply to offices and other places with lamp holders accommodating multiple light tubes or light bulbs. In this way, there is no need to retrofit in the per a lamp source with a set of parts including the power conversion module  330 , the main node module  350 , the detect circuit  360  and the battery module  380 . Instead, it only needs to install the above set of parts in the lamp holders, thus can effectively reduce costs. The realization of this embodiment is the same as the above networking functions of the above-mentioned network connection device  10  or  20 , it will not repeat the description here. 
         [0020]    Referring to  FIG. 4 , it illustrates the structure of an indoor wireless network system proposed in accordance with another embodiment of the invention. A building interior spade  40  is divided into two separate spatial units  410  and  420  (confine to the scope of the drawing, only draw two independent spatial units in the figure, but the actual situation is not limited). First, take independent space  410  for example. It contains a network connection device  411  and a plurality of slave node modules  412 ˜ 417 . Network connection device  411  is mainly combined by a master node module and a light source. The power required can be provided by the power of the light source. 
         [0021]    Please continue to refer to  FIG. 4 . Network connection device  411  has wireless connection function, such as (but not limited to), Bluetooth that is set according to personal LAN technology standards, and WiFi transmission that is set according to wireless LAN technology standards. Any users/devices that comply with communication protocol said previously can join as slave nodes if detected and identified by network connection device  411 , such as nodes  412 ˜ 417  in  FIG. 4 . The network connection device  411  network can automatically use the network addressing function to divide users/devices into different groups. Slave nodes  412 ˜ 417  use first means of transmission A to communicate with network connection devices  411 . In one application, the first transmission A can be Bluetooth. Slave nodes in the same group form a Piconet. 
         [0022]    Please continue to refer to  FIG. 4 . The internal distribution of independent space  420  is the same with the independent space  410 &#39;s. Network connection device  421  uses first transmission means A to communicate with slave nodes  422 ˜ 427 , and uses second transmission means B to communicate with network connection device  411 . In an application, the second transmission means B may be WiFi transmission. The network connection device  411  may connect to external Network X and make each slave node  412 ˜ 417 ,  422 ˜ 427  connect to the Network. In addition, network connection devices  411 ,  421  may even include a detection circuit that can detect environmental changes, such as in and out of a person or many persons, the degree of brightness, temperature, humidity, gas composition, suspended or airborne pathogens, etc. These detected data addition not only can be the basis of adjustment of brightness of light source and ON/OFF, but also can use network connection devices  411 ,  421  to upload to the external Network X and slave node modules  412 ˜ 417 ,  422 ˜ 427  to achieve resource sharing and purpose of remote monitoring. 
         [0023]    Please continue to refer to  FIG. 4 . The second transmission means B can not only use WiFi, but can use the power line communication (PLC), or use power line communication network as an alternate network. The biggest advantage of using power line communication is that power line is the largest infrastructure; there is at least a power outlet in every corner of the house, making it covers the entire network. Bus structure using on PLC makes one controller has the ability to control multiple devices. The controller can keep track of all devices on the network, and provides Plug and Play function. If any new equipment is installed, it can immediately become part of the network. 
         [0024]    Having thus described the several embodiments of the present invention, those of skill in the art will readily appreciate that other embodiments may be made and used which fall within the scope of the claims attached hereto. Numerous advantages of the invention covered by this document have been set forth in the foregoing description. It will be understood that this disclosure is, in many respects, only illustrative. Changes may be made in details, particularly in matters of shape, size and arrangement of parts without exceeding the scope of the invention.