JP2009177397A - Radio communication network system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio communication network system capable of efficiently distributing data to an unspecified radio communication terminal. <P>SOLUTION: Each of a plurality of radio communication terminals in the radio communication network system is provided with: a proximity calculation means for calculating proximity indicating a degree of physical proximity with one radio communication terminal identified by a terminal identifier indicated by a received control packet according to reception of the control packet; a storage means for storing proximity information at least including the calculated proximity for every radio communication terminal by the terminal identifier to form history of the proximity information; a reading means for reading the history of the proximity information about one radio communication terminal identified by the terminal identifier indicated by the received control packet from the storage means according to the reception of the control packet: and a communication control means for transmitting data to one radio communication terminal according to the read history of the proximity information about one radio communication terminal. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a wireless communication network system including a plurality of wireless communication terminals capable of wireless communication with each other.

  As a wireless communication network system, when data is distributed via a plurality of wireless communication terminals over a wide area such as a residential area, a mobile terminal such as a bus moving on a predetermined route is connected between fixed terminals. There is a method of relaying (see Patent Document 1). This method has an advantage that a radio wave environment can be prevented from deteriorating and a network can be constructed at a lower cost than a general method of exchanging data between access points or using a cable.

Under a wireless communication network system using the mobile relay method described above, a user moves within a residential area, office, commercial facility, or the like, and real-time characteristics or data are not necessarily transferred between multiple users' wireless communication terminals. A service that relays and exchanges data that does not require arrival guarantee is assumed. In such a service, for example, word-of-mouth information transmitted by one user propagates via a plurality of wireless communication terminals, and another user who has received the word-of-mouth information responds to one user who is a sender. In addition, each user of the wireless communication terminal advertises user-related information such as his / her profile, interest information, questions, etc., and the user who receives the user-related information responds to the attribute to the user who sent it Users can exchange data bidirectionally, such as when distributing information.
Japanese Patent No. 343248

  However, in places such as residential areas, offices, and commercial facilities, users encounter wireless communication terminals of various users. Therefore, users can discover, select, and register the wireless communication terminals of users who are data transmission partners. There is a problem that it takes time and effort.

  As for data relay, in the system disclosed in Patent Document 1, it is assumed that a mobile terminal that relays specific data moves between fixed terminals with a predetermined route with respect to a predetermined destination terminal. is doing. Since all wireless communication terminals are free to move and do not assume an environment in which data communication is performed to a plurality of wireless communication terminals whose destinations are uncertain, it is not possible to transfer data in a network composed only of mobile objects as described above. It is difficult to ensure the reliability of data communication between end-to-end users over two or more hops by relaying.

  Furthermore, although the method of transmitting data at random, such as flooding, increases the reliability of data distribution, it distributes the data to users with fewer opportunities to encounter it, which may result in a huge amount of traffic. is there.

  Accordingly, an object of the present invention is to provide a wireless communication network system capable of efficiently distributing data addressed to an unspecified wireless communication terminal.

  The wireless communication network system of the present invention is a wireless communication network system comprising a plurality of wireless communication terminals that transmit control packets indicating terminal identifiers for identifying each of them at a constant transmission interval, wherein the plurality of wireless communication Each of the terminals, in response to reception of the control packet, a proximity calculation means for calculating a proximity indicating a degree of physical proximity to one wireless communication terminal identified by a terminal identifier indicated by the reception control packet; A storage unit that stores the proximity information including at least the proximity calculated by the proximity calculation unit for each wireless communication terminal by the terminal identifier to form a history of the proximity information; and for receiving the control packet Accordingly, the history of the proximity information of the one wireless communication terminal identified by the terminal identifier indicated by the reception control packet is stored. Reading means for reading out from the means, and communication control means for transmitting data to the one wireless communication terminal according to the history of the proximity information of the one wireless communication terminal read by the reading means, It is characterized by providing.

  According to the wireless communication network system of the present invention, when each of a plurality of wireless communication terminals receives a control packet from one wireless communication terminal, one wireless communication identified by a terminal identifier indicated by the reception control packet. The proximity to the terminal is calculated, and proximity information including at least the proximity is stored for each wireless communication terminal by the terminal identifier, thereby forming a history of proximity information. Also, when a control packet is received from one wireless communication terminal, the proximity information history of the one wireless communication terminal is read, and one wireless communication terminal is read according to the read proximity information history. Data is sent. Therefore, since a history of proximity information for each wireless communication terminal is formed in each of the plurality of wireless communication terminals, data is always transmitted to the wireless communication terminal that has transmitted the control packet even if the control packet is received. Instead, data can be transmitted only to a wireless communication terminal having high proximity according to the history of proximity information. As a result, data destined for an unspecified wireless communication terminal can be efficiently distributed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a wireless communication network system to which the present invention is applied. This wireless communication network system includes a plurality of wireless communication terminals 1-12. Although FIG. 1 shows 12 wireless communication terminals, the number of wireless communication terminals is not limited to this. It is assumed that the wireless communication terminals 1 to 12 are moved by a user who owns the wireless communication terminals in an area including a place such as a residence, an office, or a commercial facility. The plurality of wireless communication terminals 1 to 12 can communicate with each other wirelessly within a range where wireless communication is possible.

  As shown in FIG. 2, each of the wireless communication terminals 1 to 12 includes an input device 201, an output device 202, a proximity information processing unit 203, a data processing unit 204, and a wireless communication device 205. The input device 201 and the output device 202 are connected to the proximity information processing unit 203 and the data processing unit 204, and the proximity information processing unit 203 and the data processing unit 204 are further connected to the wireless communication device 205. The proximity information processing unit 203 and the data processing unit 204 are also connected to each other. For example, the proximity information processing unit 203 and the data processing unit 204 may be formed as one control unit including a microcomputer.

  The input device 201 inputs information, and the output device 202 outputs information. The proximity information processing unit 203 calculates proximity information by receiving a control packet such as a beacon indicating information such as an ID from another wireless communication terminal capable of wireless communication, and also calculates the proximity information. Save and manage. The proximity information processing unit 203 is provided with an information storage unit such as a memory (not shown) in order to store proximity information and form a history of proximity information. The data processing unit 204 transmits and receives data based on the proximity information and manages the data.

  The wireless communication device 205 performs wireless communication with other wireless communication terminals in a range where wireless communication is possible.

  Each of the wireless communication terminals 1 to 12 has a function of transmitting a control packet from the wireless communication device 205 at a constant transmission interval.

  In the wireless communication network system having such a configuration, each of the wireless communication terminals 1 to 12 transmits a control packet indicating an ID (terminal identifier) or the like of its own wireless communication terminal to other wireless communication terminals that exist within a wireless communication range. Periodically. The wireless communication terminal that has received this control packet manages the proximity information by performing the operation of calculating the proximity time and the number of times of proximity as follows.

  The proximity time indicates a time during which another wireless communication terminal is in proximity to its own wireless communication terminal. The proximity state is a state in which another wireless communication terminal exists in a range where wireless communication with its own wireless communication terminal is possible.

  On the other hand, the number of times of proximity is the number of times that another wireless communication terminal exists in a range where wireless communication of its own wireless communication terminal is possible. For example, one wireless communication terminal B of the wireless communication terminals 1 to 12 first enters the wireless communication range of the wireless communication terminal A of one of the wireless communication terminals 1 to 12, and once out of the range. After moving, if it enters the range again, the number of times of proximity is two.

  The proximity time for each proximity of the wireless communication terminal is determined as follows. As shown in FIG. 3, the wireless communication terminal B periodically transmits control packets at a transmission interval Tb (steps 310 to S317). When wireless communication terminal A receives a control packet for the first time from wireless communication terminal B, or when it is the second and subsequent receptions and the previous and current reception intervals are greater than or equal to a threshold value, this is the start point of proximity at that time . FIG. 3 shows the i-th approach start time point ts (i) and the next time, that is, the (i + 1) th approach start time point ts (i + 1) (i is an integer of 1 or more). When the wireless communication terminal B moves (steps S318 and S319) and the reception interval of the control packet becomes equal to or greater than the threshold value Tthre, the immediately preceding reception time point is the proximity end time point te (i), Let te (i + 1). The time from the proximity start time to the proximity end time of each round is the proximity time.

  Next, a specific calculation operation of the proximity time and the number of times of proximity performed in the wireless communication terminal A will be described with reference to FIG. Here, the proximity time and proximity count of the wireless communication terminal B are calculated.

  As shown in FIG. 4, the wireless communication terminal B periodically transmits a control packet (step S411). Specifically, the proximity information processing unit 203 of the wireless communication terminal B periodically generates a control packet and causes the wireless communication device 205 to transmit it. The wireless communication terminal A is configured such that the value of the transmission interval Tb is input to the wireless communication terminal A in advance or the value of the transmission interval Tb of the control packet is described in the contents of the control packet. The control packet transmission interval Tb is grasped.

  First, the proximity information processing unit 203 of the wireless communication terminal A performs initialization by substituting 0 into the proximity time of the wireless communication terminal B and the value of the proximity time of itself (step S401). Next, a threshold Tthre for the control packet reception interval is set (step S402). When the wireless communication terminal B is in proximity to the wireless communication terminal A, the wireless communication terminal A performs the following operation when receiving a control packet from the wireless communication terminal B. The proximity information processing unit 203 of the wireless communication terminal A first receives the control packet from the wireless communication terminal B for the first time, or the reception time of the previous control packet and the reception time of the current control packet from the wireless communication terminal B. It is determined whether or not the interval is equal to or greater than Tthre (step 403). If either condition is satisfied, the proximity count is incremented (step S404). This is to increase the proximity count by one. And it preserve | saves in said information storage part (step S405). Then, the count of the proximity time in the incremented proximity count is started (step S406). On the other hand, if neither condition is satisfied in the determination in step 403, the operations in steps S404, S405, and 406 are omitted, and the transmission interval Tb of the wireless communication terminal B is added to the proximity time (step S407). . Then, the proximity time is stored in the information storage unit (step S408).

  Since the wireless communication terminal B periodically transmits control packets, if the wireless communication terminal B is in proximity to the wireless communication terminal A, the wireless communication terminal A receives the control packet at a time interval of Tb. When the wireless communication terminal B moves or the like, the control packet may not be received at the Tthre interval set in step 401 when the wireless communication terminal B enters a non-proximity state. The wireless communication terminal A monitors the reception interval of the control packet, and determines whether or not the next control packet is received within Tthre after receiving a certain control packet (step 408). If the next control packet is received within Tthre from the reception of one control packet, the process returns to immediately before step S403 and continues to count the proximity time in the proximity count at that time. On the other hand, if the next control packet is not received within Tthre from the reception of one control packet, the proximity time counting at the proximity count at that time is terminated, and the proximity time of that time until the previous control packet reception (Step 410). Then, the process immediately returns to step S403, and when the next control packet is received from the wireless communication terminal B, the proximity time count is newly started with the incremented proximity count.

  In calculating the proximity time and the number of times of proximity, both are calculated only under the condition that the control packet can be received, but the received signal strength (RSSI) of the transmission radio waves from other wireless communication terminals exceeds the threshold. Conditions may be added. In this case, when one or both of the conditions are not satisfied, it is determined as a non-proximity state. Since the RSSI value is generally correlated with the distance between the wireless communication terminals, the distance between the wireless communication terminals that are determined to be close to each other is determined according to the threshold value. The threshold can be set as appropriate.

  The proximity information of each wireless communication terminal is stored and managed in a table format as shown in FIG. 5, for example. In the proximity information table, a terminal ID, a proximity start time, a proximity count, and a proximity time for each wireless communication terminal are recorded. The format for storing the proximity time may be the proximity time in the number of times of proximity at that time, or the total proximity time so far. Thereby, each wireless communication terminal can know the history of the proximity time and the number of times of proximity of other wireless communication terminals. Further, the proximity start time may not be recorded in the table.

  In this way, since the proximity information regarding the opportunities encountered by the wireless communication terminals is automatically collected, the user of the wireless communication terminal himself / herself does not need to discover, select or register the data transmission partner. can do.

  Next, the data transmission operation using the proximity information when the wireless communication terminal A stores the proximity information will be described. Here, it is assumed that the wireless communication terminal A stores the proximity information of the wireless communication terminal B in the information storage unit.

  As shown in FIG. 6, the proximity information processing unit 203 of the wireless communication terminal B periodically transmits a control packet via the wireless communication device 205 (step S601). This is the same as steps S310 to S317 described above.

  In the wireless communication terminal A, when the wireless communication device 205 receives the control packet transmitted from the wireless communication terminal B, the proximity information processing unit 203 accordingly stores the proximity information about the wireless communication terminal B in the above-described information storage. The data is read from the unit and supplied to the data processing unit 204 (step S602). The data processing unit 204 determines whether there is data addressed to the wireless communication terminal B and whether the proximity to the wireless communication terminal B is high (step S603). The data addressed to the wireless communication terminal B may be data input from the input device 201 by the user in the wireless communication terminal A, or data received from the outside via the wireless communication device 205. The data addressed to the wireless communication terminal B includes data addressed to an unspecified wireless communication terminal. If there is data addressed to the wireless communication terminal B, the data is stored in the data processing unit 204. Further, the high proximity means that the total time or the number of times of proximity stored as proximity information exceeds a threshold value. If there is data addressed to the wireless communication terminal B and the proximity to the wireless communication terminal B is high, the data processing unit 204 transmits the data via the wireless communication device 205 (step S604).

  The transmitted data is received by the wireless communication device 205 of the wireless communication terminal B and stored in the data processing unit 204 (step S605).

  If there is no data addressed to the wireless communication terminal B or the proximity to the wireless communication terminal B is not high, the data processing unit 204 stops data transmission (step S606). Of course, when there is no data addressed to the wireless communication terminal B, data transmission is not performed. If the data addressed to the wireless communication terminal B is stored and the proximity to the wireless communication terminal B is not high, the data may be discarded, or the data until the proximity to the wireless communication terminal B increases. Transmission may be suspended.

  By such data transmission operation, data can be transferred between wireless communication terminals having high proximity. For example, as shown in FIG. 7, when the wireless communication terminal A stores data to be transmitted, the wireless communication terminals B, C, and D exist within a wireless communication range of the wireless communication terminal A. Is detected by receiving a control packet from them, the proximity between the wireless communication terminals A and B is high, and the proximity between the wireless communication terminals A and C is high, and between the wireless communication terminals A and D In a state where the proximity of is low, data is transmitted from the wireless communication terminal A to the wireless communication terminals B and C (701, 702). Each of the wireless communication terminals B and C receives and stores the data. Thereafter, the wireless communication terminal B moves within the wireless communication range of the wireless communication terminal F (703), the wireless communication terminal C moves within the wireless communication range of the wireless communication terminal G (704), When the proximity between the wireless communication terminals B and F is high and the proximity between the wireless communication terminals C and G is high, data is transmitted from the wireless communication terminal B to the wireless communication terminal F (705), and the wireless communication terminal Data is transmitted from C to the wireless communication terminal G (706). Each of the wireless communication terminals F and G receives and stores the data. Further, thereafter, the wireless communication terminal F moves within the wireless communication range of the wireless communication terminal E (707), and in the state where the proximity between the wireless communication terminals F and E is low, the wireless communication terminal F performs wireless communication. Data transmission to the terminal E is not performed.

  On the contrary, when the wireless communication terminals F and G each store data to be transmitted, as shown in FIG. 8, the wireless communication terminal B starts from a range where the wireless communication terminal F cannot wirelessly communicate with any terminal. Since the proximity between the wireless communication terminals B and F is high, data is transmitted from the wireless communication terminal F to the wireless communication terminal B (802). Receives and stores the data. Thereafter, the wireless communication terminal B moves within the wireless communication range of the wireless communication terminal A (803), and since the proximity between the wireless communication terminals A and B is high, data is transmitted from the wireless communication terminal B to the wireless communication terminal. (804), the wireless communication terminal A receives and stores the data. On the other hand, since the wireless communication terminal G exists within a wireless communication range of the wireless communication terminal C and the proximity between the wireless communication terminals C and G is high, data is transmitted from the wireless communication terminal G to the wireless communication terminal C. (805), the wireless communication terminal C receives and stores the data. Thereafter, the wireless communication terminal C moves within the wireless communication range of the wireless communication terminal A (806), and since the proximity between the wireless communication terminals A and C is high, data is transmitted from the wireless communication terminal C to the wireless communication terminal. (807), the wireless communication terminal A receives and stores the data.

  In this way, by exchanging data between wireless communication terminals that are frequently connected by wireless links using proximity, the reliability of bidirectional data data communication can be improved.

  In step S603, the method of determining the proximity level using either one of the sum of proximity times or the number of times of proximity has been described. Or determine the height of proximity using only proximity information based on recently received control packets instead of proximity information based on all control packets received from the past to the present. Also good. Further, the proximity may be high when the number of times of proximity within the unit period is equal to or greater than a threshold value.

  In step S604, the transmission pattern and content of data to be transmitted may be changed according to the proximity time and the number of times of proximity. For example, for a wireless communication terminal with a short proximity time but a long proximity time, a relatively large amount of data with low transmission frequency is transmitted, and for a wireless communication terminal with a short proximity time but a large number of proximity times. It is possible to transmit data with a relatively small capacity and high transmission frequency.

  FIG. 9 shows a wireless communication network system in the case where a single user owns a plurality of wireless communication terminals. User a owns wireless communication terminals A1 and A2, and user b owns wireless communication terminals B1 and B2. The wireless communication terminal A1 is usually carried by a user a, the wireless communication terminal A2 is mounted on an object Aa such as a vehicle, for example, and the user a may leave the wireless communication terminal A2. Similarly, the wireless communication terminal B1 is normally carried by the user b, the wireless communication terminal B2 is mounted on an object Bb such as a vehicle, for example, and the user b may leave the wireless communication terminal B2.

  As shown in FIG. 10, each of the wireless communication terminals A1, A2, B1, and B2 communicates with the user-owned terminals together with the input device 201, the output device 202, the proximity information processing unit 203, the data processing unit 204, and the wireless communication device 205. A control unit 206 is provided. The user-owned terminal communication control unit 206 controls communication between user-owned terminals. That is, the communication control unit 206 between the user owned terminals of each of the wireless communication terminals A1 and A2 controls the communication between the wireless communication terminals A1 and A2 owned by the user a, and the communication control between the user owned terminals of each of the wireless communication terminals B1 and B2. Unit 206 controls communication between wireless communication terminals B1 and B2 owned by user a. Each of the input device 201, the output device 202, the proximity information processing unit 203, the data processing unit 204, and the wireless communication device 205 can perform the same operations as those shown in FIG. In addition, the data processing unit 204 performs data communication between the same user terminals in cooperation with the user-owned terminal communication control unit 206.

  Next, a case between the wireless communication terminal A1 and the wireless communication terminal X will be described for data communication between the same user terminals. If the wireless communication terminal X is the wireless communication terminal A2, communication is performed with the terminal of the same user. The wireless communication terminal X has the configuration shown in FIG.

  In the same user terminal data communication operation, as shown in FIG. 11, the user-owned terminal communication control unit 206 of the wireless communication terminal A1 acquires the ID of the same user terminal, that is, the wireless communication terminal A2 (step S1101). The ID of the wireless communication terminal A2 is input in advance from, for example, the input device 201 of the wireless communication terminal A1 and held in the communication control unit 206 between user-owned terminals.

  The proximity information processing unit 203 of the wireless communication terminal X periodically transmits a control packet via the wireless communication device 205 (step S1102).

  In the wireless communication terminal A1, when the wireless communication device 205 receives the control packet transmitted from the wireless communication terminal X, the proximity information processing unit 203 reads out the proximity information about the wireless communication terminal X in response to the control packet. It supplies to the communication control part 206 between user-owned terminals (step S1103). The proximity information includes the ID of the wireless communication terminal X.

  The communication control unit 206 between the user-owned terminals of the wireless communication terminal A1 searches for the terminal from the stored information according to the supplied proximity information, and notifies the data processing unit 204 of the wireless communication terminal A1 of the result. (Step S1104). That is, it is determined whether or not there is a terminal corresponding to the supplied proximity information ID.

  The data processing unit 204 of the wireless communication terminal A1 determines whether or not the wireless communication terminal X is the same user terminal A2 as its own wireless communication terminal A1 according to the notified search result (step S1105). If they are the same user terminal, a data synchronization operation for synchronizing data stored in the wireless communication terminal A2 is performed (step S1106). The data synchronization operation is an operation in which the wireless communication terminals A1 and A2 both store the same data, and at that time, data that is only in one terminal is transmitted to the other terminal and the data is compared with each other. A data storage state having the same contents is performed. In the data synchronization operation, for example, stored data is exchanged between the wireless communication terminals A1 and A2 and held in each other. Therefore, when the data processing unit 204 of the wireless communication terminal A2 receives the data transmitted from the wireless communication terminal A1, it is determined whether or not the data reception is from the same user terminal (step S1107). If so, the data synchronization operation is similarly started (step S1108).

  If it is determined in step S1105 that the wireless communication terminal X is not the same user terminal as A1, the data processing unit 204 has data addressed to the wireless communication terminal X and whether the proximity to the wireless communication terminal X is high. It is determined whether or not (step S1109). The data addressed to the wireless communication terminal X may be data input from the input device 201 by the user in the wireless communication terminal A1, or data received from the outside via the wireless communication device 205. The data addressed to the wireless communication terminal X includes data addressed to an unspecified wireless communication terminal. If there is data addressed to the wireless communication terminal X, the data is stored in the data processing unit 204. If there is data addressed to the wireless communication terminal X and the proximity to the wireless communication terminal X is high, the data processing unit 204 transmits the data via the wireless communication device 205 (step S1110).

  The transmitted data is received by the wireless communication device 205 of the wireless communication terminal X and stored in the data processing unit 204 (step S1111).

  If there is no data addressed to the wireless communication terminal X, or if the proximity to the wireless communication terminal X is not high, the data processing unit 204 stops data transmission (step S1112).

  The operations in steps S1109 to S1112 are the same as those in steps S603 to S606 described above.

  As shown in FIG. 9, in a network system in which the same user has a plurality of wireless communication terminals, stored data and wireless communication terminals carried by the user's wireless communication terminals attached to objects are stored. Because of synchronization, the user's wireless communication terminals attached to the object can be close to each other even if the terminal carried by the user is not in the range where wireless communication is possible at the same time or the proximity is low. Since data can be transmitted and received, the opportunity and time for exchanging data can be increased.

  When transmitting data, in order to limit the data distribution range, restrictions can be placed on the number of data transfer hops and the expiration date, or the destination terminal can be limited. Further, data transmission may be determined according to whether the user is interested in the data.

  Furthermore, when the same data is transmitted to a plurality of wireless communication terminals capable of wireless communication, the data packets may be aggregated and transmitted only once instead of a plurality.

1 is a diagram showing an outline of a wireless communication network system to which the present invention is applied. It is a block diagram which shows the structure of the radio | wireless communication terminal in the system of FIG. It is a flowchart which shows the calculation method of proximity | contact time. It is a flowchart which shows the calculation method of proximity | contact time and the frequency | count of proximity | contact. It is a figure which shows the preservation | save table of proximity information. It is a flowchart which shows data transmission control operation. It is a figure which shows transfer of the data between several radio | wireless communication terminals. It is a figure which shows the transfer of the data in the reverse direction to FIG. 7 between several radio | wireless communication terminals. It is a figure which shows the outline of a radio | wireless communication network system in case the same user has a some radio | wireless communication terminal. It is a block diagram which shows the structure of the radio | wireless communication terminal in the system of FIG. 10 is a flowchart showing the same user terminal discrimination and data synchronization operation of the wireless communication terminals in the system of FIG. 9.

Explanation of symbols

1 to 12 Wireless communication terminal 201 Input device 202 Output device 203 Proximity information processing unit 204 Data processing unit 205 Wireless communication device

Claims (10)

A wireless communication network system comprising a plurality of wireless communication terminals that transmit a control packet indicating a terminal identifier for identifying each at a constant transmission interval,
Each of the plurality of wireless communication terminals calculates a proximity indicating a degree of physical proximity to one wireless communication terminal identified by a terminal identifier indicated by the reception control packet in response to reception of the control packet A degree calculation means;
Storage means for storing proximity information including at least the proximity calculated by the proximity calculation means for each wireless communication terminal by the terminal identifier and forming a history of the proximity information;
A reading unit that reads from the storage unit a history of the proximity information of the one wireless communication terminal identified by a terminal identifier indicated by the reception control packet in response to reception of the control packet;
Communication control means for transmitting data to the one wireless communication terminal in accordance with the history of the proximity information of the one wireless communication terminal read by the reading means. Communication network system.   The wireless communication network system according to claim 1, wherein the proximity calculation unit calculates a proximity time that is a period in which the control packet transmitted from the one wireless communication terminal is received as the proximity.   The proximity calculating means receives the control packet transmitted from the first wireless communication terminal for the first time, or once when the second and subsequent receptions and the previous and current reception intervals are greater than or equal to a threshold value. The wireless communication network system according to claim 1, wherein the number of times of proximity that increases by the number of times is calculated as the degree of proximity. The proximity calculation means receives a proximity time that is a period in which the control packet transmitted from the one wireless communication terminal is received and the control packet transmitted from the first wireless communication terminal for the first time, or It is the second and subsequent receptions, and the proximity number that increases only once when the previous and current reception intervals are equal to or greater than the threshold is calculated as the proximity.
2. The wireless communication network system according to claim 1, wherein the storage unit stores the terminal identifier of the one wireless communication terminal, the proximity time, and the proximity count as the proximity information.   When the communication control unit determines that the proximity of the one wireless communication terminal is higher than a threshold based on the proximity information history of the one wireless communication terminal read by the reading unit, the communication control unit 2. The wireless communication network system according to claim 1, wherein data is transmitted to the wireless communication terminal.   The communication control means holds data addressed to the one wireless communication terminal, and the proximity is less than a threshold based on a history of the proximity information of the one wireless communication terminal read by the reading means. The wireless communication network system according to claim 1, wherein when it is determined that the data is high, data is transmitted to the one wireless communication terminal.   Each of at least two wireless communication terminals owned by the same user among the plurality of wireless communication terminals is the same user terminal based on the proximity information of the one wireless communication terminal read by the reading unit. Determining means for determining whether or not there is, and means for performing data synchronization with the one wireless communication terminal when the determining means determines that the first wireless communication terminal is the same user terminal. The wireless communication network system according to claim 1.   8. The wireless communication network system according to claim 7, wherein one of the two wireless communication terminals is a portable wireless communication terminal, and the other is a wireless communication terminal attached to an object.   The wireless communication network system according to claim 8, wherein the object is a vehicle. A wireless communication terminal that receives a control packet indicating a terminal identifier for identifying a terminal,
A proximity calculation means for calculating a proximity indicating a degree of physical proximity to one wireless communication terminal identified by a terminal identifier indicated by the reception control packet in response to reception of the control packet;
Storage means for storing proximity information including at least the proximity calculated by the proximity calculation means for each wireless communication terminal by the terminal identifier and forming a history of the proximity information;
A reading unit that reads from the storage unit a history of the proximity information of the one wireless communication terminal identified by a terminal identifier indicated by the reception control packet in response to reception of the control packet;
Communication control means for transmitting data to the one wireless communication terminal in accordance with the history of the proximity information of the one wireless communication terminal read by the reading means. Communication terminal.

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