COMMUNICATION SYSTEM, COMMUNICATION CONTROL METHOD, MOBILE STATION, AND BASE STATION

• US 20130303227A1
• Filed: 05/02/2013
• Published: 11/14/2013
• Est. Priority Date: 05/10/2012
• Status: Active Grant

• Current Assignee: JVC Kenwood Corporation
• Original Assignee: JVC Kenwood Corporation
• Inventors: LIANG, Yu Feng
• Granted Patent: US 9,084,092 B2
• Time in Patent Office: Days
• US Class Current: 455/519
• CPC Class Codes: H04W 4/08 User group management

Abstract

Process loads of a base station and a mobile station are reduced when setting a group with respect to a plurality of mobile stations. The base station stores group information corresponding to a group assignable to a wireless device in association with the wireless device. The base station transmits group information to the wireless device through a relay station according to an authentication request from the wireless device. The base station generates call information defining a group requesting participation. The base station transmits call information to the wireless device through the relay station. The wireless device determines whether the group defined by call information and received from the base station includes the group corresponding to group information. The wireless device participates in the group determined to be included. The wireless device performs a data communication with other wireless devices participating in the group through the relay station.

Claims

1. A communication system comprising a base station and a plurality of mobile stations,

wherein the base station comprises:

a first storage unit which stores group information corresponding to a group assignable to each of the plurality of mobile stations in association with the mobile station;

a generator which generates call information defining a group requesting the mobile station to participate;

a group information transmitter which transmits the group information associated with the mobile station and stored in the first storage unit to the mobile station according to an authentication request from the mobile station; and

a call information transmitter which transmits the call information generated by the generator to the mobile station, and

each of the plurality of mobile stations comprises;

a second storage unit which stores group information received from the base station;

a determining unit which determines whether a group defined by call information received from the base station includes a group corresponding to the group information stored in the second storage unit;

a controller which makes a self-device participate in the group determined to be included by the determining unit; and

a communicator which transmits and receives data to and from the mobile station forming the group in which the self-device participates.

2. The communication system of claim 1, wherein the call information transmitter simultaneously transmits the call information to each of the plurality of mobile stations.

3. The communication system of claim 1, wherein the determining unit determines whether the group in which the self-device participates is defined in the call information, and

if it is determined by the determining unit that the group is not defined, the controller releases the self-device from the group in which the self-device participates.

4. The communication system of claim 1, wherein, when a plurality of groups are determined to be included by the determining unit, the controller makes the self-device participate in a group having a highest priority from among the plurality of groups.

5. The communication system of claim 1, wherein the generator generates group information, and the group information transmitter transmits the group information generated by the generator to the mobile station.

6. The communication system of claim 1, wherein the call information transmitter intermittently transmits the call information to each of the plurality of mobile stations.

7. The communication system of claim 1, wherein, when the call information is not received from the base station for a predetermined time interval or more, the controller releases the self-device from the group in which the self-device participates.

8. The communication system of claim 1, wherein the group information and the call information are data defined by a predetermined bit number, and

the determining unit determines, according to an operation result of the group information and the call information, whether the group defined by the call information includes the group corresponding to the group information.

9. A communication control method performed by a communication system comprising a base station and a plurality of mobile stations, the communication control method comprising:

firstly storing group information corresponding to a group assignable to each of the plurality of mobile stations in association with the mobile station, wherein the firstly storing is performed by the base station,

transmitting the group information, which is associated to the mobile station and stored by the firstly storing, to the mobile station according to an authentication request from the mobile station, wherein the transmitting is performed by the base station;

secondly storing group information received from the base station, wherein the secondly storing is performed by each of the plurality of mobile stations;

generating call information defining a group requesting the mobile station to participate, wherein the generating is performed by the base station;

transmitting the generated call information to the mobile station, wherein the transmitting is performed by the base station;

determining whether a group defined by call information received from the base station includes a group corresponding to the group information stored by the secondly storing, wherein the determining is performed by each of the plurality of mobile stations;

making a self-device participate in the group determined to be included by the determining, wherein the participating is performed by each of the plurality of mobile stations; and

transmitting and receiving data to and from the mobile station forming the group in which the self-device participates, wherein the transmitting and receiving is performed by each of the plurality of mobile stations.

10. A mobile station of a communication system comprising a base station and a plurality of mobile stations, the mobile station comprising:

a storage unit which stores group information corresponding to a group assignable to a self-device;

a determining unit which determines whether a group requested to participate and defined by call information received from the base station includes a group corresponding to the group information stored in the storage unit;

a controller which makes a self-device participate in the group determined to be included by the determining unit; and

a communicator which transmits and receives data to and from the mobile station forming the group in which the self-device participates.

11. A base station of a communication system comprising a base station and a plurality of mobile stations, the base station comprising:

a storage unit which stores group information corresponding to a group assignable to each of the plurality of mobile stations in association with the mobile station;

a generator which generates call information making the mobile station participate in the group including the group corresponding to the group information;

a group information transmitter which transmits the group information associated with each of the plurality of mobile stations and stored in the storage unit to the mobile station according to an authentication request from the mobile station; and

a call information transmitter which transmits the call information generated by the generator to the mobile station.