US 7,460,838 B2Granted

Control station, a wireless communication system and a wireless communication method

AssigneeNEC Corporation

InventorNaoki Hasegawa

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Abstract

A radio communication system by which an additional terminal can be easily registered to group information to set up radio communication between particular terminals, and a new user can conduct radio communication in a short period of time. When a group application request to establish radio communication between POC terminals is received, a CUG server creates a group table, generates group information by assigning group identification information to the group table, and stores the group information in the server. The CUG server then delivers the group identification information to a host POC terminal. When a registration request to the group table and group identification information are received from a POC terminal, the CUG server retrieves a group table assigned with the group identification information received from the POC terminal to automatically register terminal identification information of the POC terminal as the registration request source to the group table.

Claims102

Dependent claims

A control station for setting up radio communication between a plurality of mobile stations conducting radio communication using a press-to-talk switch, the control station comprising:

a group information storage device for, when a group application request to establish radio communication between particular mobile stations is received from a communication device,
creating a group table to set up radio communication between the particular mobile stations,
generating group information by adding group identification information identifying the group table to the group table thus created, and
storing the group information therein;
a group identification information transmitter for transmitting the group identification information assigned to the group table to the communication device that is a source of the group application request;
a registering section for, when a registration request to the group table and the group identification information are received from at least one particular mobile station,
retrieving from the stored group information a group table assigned a group identification information matching the group identification information received from the at least one particular mobile station, and
registering information of the at least one particular mobile station that is a source of the registration request to a group table assigned the group identification information received from the at least one particular mobile station;
a section for transmitting grant information indicating to the communication device that the registration request to the group table is granted, wherein the registering section registers the the registration request to the group table is granted, wherein the registering section registers the information of the at least one particular mobile station to the group table when the grant information is received;
and
a radio communication establishing section for setting up radio communication between mobile stations registered in the group table.

8 more elements

A radio communication system, comprising:

a plurality of mobile stations conducting radio communication using a press-to-talk switch;
a communication device;
and a control station for establishing radio communication between a plurality of mobile stations, wherein the control station comprises:
a group information storage device for, when a group application request to establish radio communication between particular mobile stations is received from the communication device,
creating a group table to set up radio communication between the particular mobile stations,
generating group information by adding group identification information identifying the group table to the group table, and
storing the group information therein;
a group identification information transmitter for transmitting the group identification information assigned to the group table to the communication device that is a source of the group application request;
a registering section for, when a registration request to the group table, the group identification information, and information of the mobile station are received from at least one particular mobile station,
registering the information of the at least one particular mobile station to a group table assigned with the group identification information received from the at least one particular mobile station;
a section for transmitting grant information indicating to the communication device that the registration request to the group table is granted, wherein the registering section registers the information of the at least one particular mobile station to the group table when the grant information is received;
and
a radio communication establishing section for, when a setup request of radio communication between mobile stations registered to the group table is received from the at least one particular mobile station, setting up radio communication between the mobile stations registered to the group table;
the communication device comprises:
a transmitter for sending to the control station the group application request to establish radio communication between the mobile stations;
and
a receiver for receiving the group identification information from the control station;
and
each of the plurality of mobile stations comprises:
a group registration request section for sending to the control station a registration request to register information thereof to the group table, group identification information to identify the group table, and information of the mobile station;
and
a radio communication setup request section for sending the control station a setup request to establish radio communication between mobile stations registered to the group table to which the information of the mobile station is registered.

19 more elements

A radio communication method applied to a system including a plurality of mobile stations conducting radio communication therebetween using a press-to-talk switch, a communication device, and a control station for establishing radio communication between the plurality of mobile stations, the method comprising the steps of:

the communication device transmitting a group application request to the control station to establish radio communication between particular mobile stations;
when the group application request is received from the communication device, the control station
creating a group table to set up radio communication between the particular mobile stations,
generating group information by adding group identification information identifying the group table to the group table thus created, and
storing the group information in a storage thereof;
the control station transmitting the group identification information assigned to the group table to the communication device that is a source of the group application request;
the communication device receiving the group identification information from the control station;
the at least one particular mobile station transmitting a registration request to register information thereof to the group table, group identification information to identify the group table, and information of the mobile station to the control station;
when the registration request to the group table, the group identification information, and the information of the mobile station are received from the at least one particular mobile station, the control station registering the information of the at least one particular mobile station to the group table assigned with the group identification information received from the at least one particular mobile station;
the control station transmitting grant information indicating to the communication device that the registration request to the group table is granted, wherein the step of the control station registering the information of the at least one particular mobile station to the group table is performed when the grant information is received;
the at least one particular mobile station transmitting a setup request to the control station to set up radio communication between the particular mobile stations registered to the group table to which the information of the at least one particular mobile station is registered;
and
when the setup request of radio communication between the particular mobile stations is received from the at least one particular mobile station side, the control station establishing radio communication between the particular mobile stations registered to the group table.

10 more elements

Dependencies are inferred from the claim text.