JP2018133677A - COMMUNICATION DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND PROGRAM - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a communication device, a communication system, a communication method, and a program capable of efficiently using wireless resources at the time of group communication. A communication unit that communicates with a network, a storage unit that can store at least one group of a plurality of identification codes, and a plurality of identification codes assigned to data transmitted by a terminal having the identification code are the same. When the communication unit receives the data for a predetermined number of times to which the plurality of identification codes are assigned, the identification code possessed by the terminal that transmits the data and the plurality of identification codes assigned to the data. Is stored in the storage unit as the group, and a signal including an instruction to register the plurality of identification codes belonging to the group as a multicast group to the terminal having the identification code belonging to the group is transmitted to the communication unit. It is provided with a control unit for transmitting from. [Selection diagram] Fig. 1

Description

  The present invention relates to a communication device, a communication system, a communication method, and a program.

  In a mobile radio communication system using an IP (Internet Protocol) network, there is multicast as a technique for realizing group communication between a plurality of terminals. When a terminal performs group communication with multiple terminals, multicast uses the network compared to unicast, which specifies the address of each terminal to communicate with in the IP network and communicates with a specific partner. Efficiency is good.

  MBMS (Multimedia Broadcast Multicast Service) defined in LTE Release 9 of 3GPP (Third Generation Partnership Project), which is a standardization project for mobile radio communication systems, is a technology for realizing multicast.

  Patent Document 1 describes a multicast.

International Publication No. 2010/061483

  In order to perform group communication for a plurality of terminals using multicast by MBMS, it is necessary to set group information in advance for each terminal.

  When group information is not set in advance in the terminal, communication is performed using the unicast method, and thus there is a problem that radio resources used for one group communication increase.

  In view of the above-described problems, an object of the present invention is to provide a communication device, a communication system, a communication method, and a program that solve an increase in radio resources during group communication.

  In order to achieve the above object, a communication device of the present invention transmits a communication unit communicating with a network, a storage unit capable of storing at least one group of a plurality of identification codes, and a terminal having the identification code. When the communication unit receives the predetermined number of times the plurality of identification codes that are the same as the plurality of identification codes assigned to data are received, the identification code of the terminal that transmits the data The plurality of identification codes assigned to the data are stored in the storage unit as the group, and the plurality of identification codes belonging to the group are multicasted to the terminal having the identification code belonging to the group. A control unit that transmits a signal including an instruction to register as a group from the communication unit.

  In order to achieve the above object, a communication system according to the present invention transmits a communication unit communicating with a network, a storage unit capable of storing at least one group of a plurality of identification codes, and a terminal having the identification code. When the communication unit receives the predetermined number of times the plurality of identification codes that are the same as the plurality of identification codes assigned to data are received, the identification code of the terminal that transmits the data The plurality of identification codes assigned to the data are stored in the storage unit as the group, and the plurality of identification codes belonging to the group are multicasted to the terminal having the identification code belonging to the group. A communication device including a control unit that transmits a signal including an instruction to register as a group from the communication unit; and connected to the network. And a plurality of base stations capable of communicating with the terminal and multicast and unicast, the communicator transmits the data to the terminal via the base station.

  In order to achieve the above object, the communication method of the present invention stores at least one group of a plurality of identification codes, and is the same as the plurality of identification codes assigned to data transmitted by a terminal having the identification code. When the data of a predetermined number of times with the plurality of identification codes is received, the terminal and the plurality of identification codes are stored as the group, and the terminal having the identification code belonging to the group is stored. And transmitting a signal including an instruction to register the plurality of identification codes belonging to the group as a multicast group.

  In order to achieve the above object, the program of the present invention stores at least one group of a plurality of identification codes, and is the same as the plurality of identification codes given to data transmitted by a terminal having the identification code. When the data of a predetermined number of times given the plurality of identification codes is received, the terminal and the plurality of identification codes are stored as the group, and the terminal having the identification code belonging to the group A signal including an instruction to register the plurality of identification codes belonging to the group as a multicast group is transmitted.

  According to the present invention, a communication device, a communication system, a communication method, and a program can efficiently use radio resources for group communication.

It is a figure which shows the structural example of 1st Embodiment. It is a figure which shows the structural example of 2nd Embodiment. It is a figure which shows operation | movement of 2nd Embodiment. It is a figure which shows the structural example of 3rd Embodiment. It is a figure which shows operation | movement of 3rd Embodiment.

[First Embodiment]
Next, an embodiment of the present invention will be described in detail with reference to FIG. 1 and FIG.

  FIG. 1 shows the configuration of the first embodiment.

  The communication device 100 according to the present embodiment includes a communication unit 101 that communicates with a network 110, a storage unit 102 that can store at least one group of a plurality of identification codes, and a control unit 103.

  When the communication unit 101 receives the first information a predetermined number of times, the control unit 103 stores the second information in the storage unit 102. The first information is data to which the plurality of identification codes that are the same as the plurality of identification codes given to data transmitted by the terminal having the identification code and received by the communication unit 101 are added. Moreover, 2nd information is the information which makes the said identification code which the said terminal which transmits the said data has, and the said several identification code provided to the said data to the said group. Then, the control unit 103 transmits a signal including an instruction to register the plurality of identification codes belonging to the group as a multicast group to the terminal having the identification code belonging to the group from the communication unit 101 .

  When communicating with a plurality of communication destinations, it is desirable to treat the plurality of communication destinations as one group and perform multicast communication. This is because multicast can save communication resources as compared with the case where communication is performed by unicast to a plurality of partners.

  According to the communication device 100 of this embodiment, when repeatedly communicating with a plurality of the same communication destinations without being conscious of the user of the terminal, the plurality of distribution destinations are registered as one group when repeated a certain number of times. The group information is distributed to the terminals. If the group information is registered in the terminal, the user can communicate by designating multicast to a plurality of communication destinations that have been communicating by unicast until then.

As described above, the communication device according to the present embodiment can efficiently use radio resources for group communication.
[Second Embodiment]
Next, a second embodiment will be described with reference to FIGS.
[Description of configuration]
FIG. 2 shows the configuration of the second embodiment.

  The communication system 200 according to the present embodiment includes a server 201, a plurality of base stations 202, and a plurality of terminals 203.

  The server 201 includes a communication unit 2011, a storage unit 2012, and a control unit 2013. The server 201 may be referred to as a communication device.

  The communication unit 2011 is a communication unit that is connected to an IP (Internet Protocol) network 210 and performs communication with the IP network 210. The IP network 210 is connected to at least one base station 202, and the base station 202 can be connected to a plurality of terminals 203 wirelessly.

  The storage unit 2012 is information storage means including a storage element.

  The control unit 2013 includes a CPU (Central Processing Unit), controls the hardware of the server 201, and performs software processing.

  The base station 202 is a radio device using a 3GPP radio communication scheme that can communicate with the terminal 203 by both unicast and multicast by MBMS.

The terminal 203 is a wireless device that communicates with the base station 202 wirelessly.
[Description of operation]
Next, the operation of the server 201 of this embodiment will be described with reference to FIG.

  The communication unit 2011 always receives the communication signal of the terminal 203 that transmits the IP network 210.

  Then, the control unit 2013 determines whether or not the terminal 203 is performing unicast communication with a plurality of opponents (S101).

  If it is determined in step S101 that communication is being performed with a plurality of opponents by unicast (Y in S101), the process proceeds to step S102.

  If it is determined in step S101 that communication is not performed with a plurality of opponents by unicast (N in S101), the process returns to step S101.

  In step S102, the control unit 2013 determines whether or not the identification codes of a plurality of opponents with which the terminal 203 communicates match the identification codes registered in a temporary group described later (S102).

  If it is determined in step S102 that the identification codes of a plurality of opponents with which the terminal 203 communicates match the identification codes registered in the temporary group (Y in S102), the process proceeds to step S103.

  If it is determined in step S102 that the identification codes of a plurality of opponents with which the terminal 203 communicates do not match the identification codes registered in the temporary group (N in S102), the process proceeds to step S107.

  In step S103, the control unit 2013 substitutes n + 1 for a variable n stored in the storage unit 2012 corresponding to the temporary group (S103).

  In step S104, the control unit 2013 determines whether or not the variable n matches the predetermined number of times A (S104).

  If it is determined in step S104 that the variable n matches A (Y in S104), the process proceeds to step S105.

  If it is determined in step S104 that the variable n does not match A (N in S104), the process returns to step S101.

  In step S105, the control unit 2013 registers the temporary group as a group in the storage unit 2012 (S105).

  In step S106, the control unit 2013 instructs the terminal 203 to transmit a signal including the next instruction to the terminal 203 having the identification code belonging to the group registered in step S105. The instruction is an instruction to register an identification code belonging to the group in the terminal 203 in the group as a multicast communication destination (S106).

  After step S106, the process returns to step S101.

  In step S107, the control unit 2013 stores the identification codes of a plurality of opponents communicating by unicast in the storage unit 2012 as identification codes belonging to the temporary group (S107).

  Note that there can be a plurality of temporary groups.

  In step S108, the control unit 2013 sets the variable n stored in the storage unit 2012 corresponding to the temporary group to zero (S108).

  When there are a plurality of temporary groups, different variables such as n1 and n2 are set for each temporary group.

  After step S108, the process returns to step S101.

  The above is description of operation | movement of the server 201 of this embodiment.

  According to the server 201 of this embodiment, when the user of the terminal 203 communicates repeatedly with a plurality of the same communication destinations by unicast and is repeated up to a certain number of times, a plurality of distribution destinations can be obtained without the user being conscious. Are registered as one group. Then, multicast group information is distributed to all terminals 203 registered in the group. If group information is registered in the terminal 203, the user can communicate with a plurality of communication destinations that have been communicating by unicast until now by specifying multicast.

As described above, the server 201 according to the present embodiment can efficiently use radio resources for group communication.
[Third Embodiment]
Next, a third embodiment will be described with reference to FIGS.
[Description of configuration]
FIG. 4 shows the configuration of the communication system 300 of the present embodiment.

  The communication system 300 is different from the communication system 200 of the second embodiment shown in FIG. 2 in that a timer unit 3014 connected to the control unit 3013 is added to the server 301.

  The time measuring unit 3014 is a time measuring means for measuring time.

  Note that the timer unit 3014 may use a timer function that is a function generally owned by a CPU used in the controller 2013.

The communication unit 3011, the storage unit 3012, and the control unit 3013 are the same as the communication unit 2011, the storage unit 2012, and the control unit 2013 of the server 201 of the second embodiment.
[Description of operation]
The operation of this embodiment is shown in FIG.

  When the operation of FIG. 5 is compared with the operation of FIG. 3 describing the operation of the second embodiment, step S203, step S210, and step S211 are added.

  First, steps S201 to S202 are the same as steps S101 to S102 in FIG.

  In step S203, the control unit 3013 determines whether the time t measured by the time measuring unit 3014 is within a predetermined time B (S203).

  If it is determined in step S203 that the time t measured by the time measuring unit 3014 is within the predetermined time B (Y in S203), the process proceeds to step S204.

  If it is determined in step S203 that the time t measured by the time measuring unit 3014 is not within the predetermined time B (N in S203), the process proceeds to step S211.

  Steps S204 to S207 are the same as steps S103 to S106 in FIG.

  Steps S208 to S209 are the same as steps S107 to S108 in FIG.

  In step S210, the control unit 3013 sets the time variable t of the time measuring unit 3014 to zero. When there are a plurality of temporary groups, different time variables such as t1 and t2 are set for each temporary group.

  After step S210, the process returns to step S201.

  In step S <b> 211, the control unit 3013 deletes information on the temporary group whose time t is not equal to or less than B, that is, information on the temporary group name, the identification code belonging to the temporary group, the variable n, and the time t from the storage unit 3012.

  The above is the description of the operation of the present embodiment.

  The server 201 of the second embodiment repeatedly communicates with a plurality of the same communication destinations by unicast, and when repeated up to a certain number of times within a predetermined time, a plurality of distribution destinations are transmitted to the terminal without being conscious of the user. Was registered as a group.

  For this reason, the number of temporary groups stored in the storage unit 2012 may increase, and the capacity of the storage unit 2012 may be compressed.

  The server 301 of this embodiment, when a user of the terminal 203 repeatedly communicates with a plurality of the same communication destinations by unicast and repeats up to a certain number of times within a predetermined time, a plurality of distribution destinations are stored in the terminal. Registered as one group.

  If the user of the terminal 203 repeatedly communicates with a plurality of the same communication destinations by unicast and is not repeated up to a certain number of times within a predetermined time, the temporary group information is erased and stored in the storage unit 2012. The number of temporary groups to be suppressed can be suppressed.

  As described above, the server 301 can suppress the storage amount of the storage unit 3012 while effectively maintaining the same effect as the server 201 of the second embodiment.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and can be expanded or modified as follows.

  The base station 202 and the terminal 203 of the second embodiment are connected by a wireless communication method using a 3GPP standard. However, the base station 202 and the terminal 203 are not necessarily connected wirelessly and may be wired IP connections.

  The present invention is also applicable when an information processing program that implements the functions of the embodiments is supplied directly or remotely to a system or apparatus.

DESCRIPTION OF SYMBOLS 100 Communication apparatus 101 Communication part 102 Storage part 103 Control part 110 Network 201 Server 202 Base station 203 Terminal 210 IP network 2011 Communication part 2012 Storage part 2013 Control part 300 Communication system 301 Server 3011 Communication part 3012 Storage part 3013 Control part 3014 Timekeeping part

Claims (10)

A communication unit communicating with the network;
A storage unit capable of storing at least one group of a plurality of identification codes;
When the communication unit receives the data of a predetermined number of times given the plurality of the identification codes that are the same as the plurality of identification codes given to the data transmitted by the terminal having the identification code,
Storing the identification code of the terminal that transmits the data and the plurality of identification codes assigned to the data as the group in the storage unit;
And a control unit that transmits a signal including an instruction to register the plurality of identification codes belonging to the group as a multicast group to the terminal having the identification code belonging to the group from the communication unit. A communication device. The communication device according to claim 1, wherein the predetermined number of times is a number of times within a predetermined time. The communication device according to claim 1 or 2,
A plurality of base stations connected to the network and capable of communicating with the terminal by multicast and unicast;
The communication apparatus transmits the data to the terminal via the base station. The plurality of base stations and the terminal are connected by radio,
The communication system according to claim 3, wherein the multicast uses an MBMS technology defined in LTE Release 9 of 3GPP. Storing at least one group of a plurality of identification codes;
When receiving the data a predetermined number of times given the plurality of the identification codes that are the same as the plurality of identification codes given to the data transmitted by the terminal having the identification code,
Storing the terminal and the plurality of identification codes as the group;
A communication method comprising: transmitting a signal including an instruction to register the plurality of identification codes belonging to the group as a multicast group to the terminal having the identification code belonging to the group. The communication method according to claim 5, wherein the predetermined number of times is a number of times within a predetermined time. The communication method according to claim 5 or 6, wherein the multicast uses an MBMS technique defined in LTE Release 9 of 3GPP. Storing at least one group of a plurality of identification codes;
When receiving the data a predetermined number of times given the plurality of the identification codes that are the same as the plurality of identification codes given to the data transmitted by the terminal having the identification code,
Storing the terminal and the plurality of identification codes as the group;
A program comprising: transmitting a signal including an instruction to register the plurality of identification codes belonging to the group as a multicast group to the terminal having the identification code belonging to the group. The program according to claim 8, wherein the predetermined number of times is a number of times within a predetermined time. The program according to claim 8 or 9, wherein the multicast uses an MBMS technique defined in LTE Release 9 of 3GPP.

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