RADIO DEVICE, ADDRESS DETERMINATION METHOD, COMMUNICATION SYSTEM AND RADIO TERMINAL
This wireless device ( 1 ) is provided with a wireless base station function ( 4 ) and a wireless terminal function ( 5 ), and is provided with: an address information acquisition means that transmits an address payout request to another wireless base station ( 3 ) by means of the wireless terminal function ( 5 ), and acquires and stores address information allocated to the device in question in response; and an address information payout means that pays out address information prioritizing that which is other than the address information stored at the address information acquisition means to a wireless terminal ( 2 ) by means of the wireless base station function ( 4 ). As a result, it is possible to provide: a wireless device that can suppress redundant allocation of address information to wireless terminals; an address determination method, a communication system, and a wireless terminal.
1 . A radio device comprising:
an address information acquisition unit that transmits, by a radio terminal function, an address offer request to a different radio base station, and that acquires and stores address information allocated to the radio device in response to the request; and
an address information offer unit that preferentially offers to a radio terminal, by a radio base station function, address information other than the address information stored in the address information acquisition unit.
2 . The radio device according to claim 1 , wherein the address information acquisition unit is configured to:
start a process for acquiring the address information, the process being triggered when the radio terminal function is wirelessly connected to a different radio base station.
3 . The radio device according to claim 1 , wherein the address information acquisition unit is configured to:
start a process for acquiring the address information, the process being triggered when a change request for the address information is received from a radio terminal to which the radio base station function is connected.
4 . The radio device according to claim 1 , wherein the address information acquisition unit is configured to:
start a process for acquiring the address information, the process being triggered when the radio device is booted.
5 . The radio device according to claim 1 , wherein the address information acquisition unit is configured to:
transmit an address offer request to a different radio base station;
acquire address information allocated to the radio device in response to the request to associate with the radio base station; and
then cancel the association.
6 . The radio device according to claim 1 , wherein the address information offer unit is configured to:
disconnect, upon offering address information to a radio terminal with which the radio base station function communicates, communication with the radio terminal after a communication buffer for the communication with the radio terminal becomes empty; and
perform the offer of the address information.
7 . An address determination method for a radio terminal, comprising:
transmitting an address offer request to a different radio base station;
receiving allocated address information from the different radio base station; and
preferentially offering, upon offering an address to a radio terminal, address information other than the received address information to the radio terminal.
8 . The address determination method according to claim 7 , wherein the address offer request is transmitted by using, as a trigger, wireless connection to a different radio base station.
9 . A communication system,
wherein a radio terminal includes a unit that outputs a change request for address information upon performing multi access to a radio base station other than a radio device,
wherein the radio device comprises:
an address information acquisition unit that transmits an address offer request to a different radio base station, the address offer request being triggered when a change request for address information is received from a radio terminal to which a radio base station function is connected, and that acquires and stores address information allocated to the radio device in response to the address offer request; and
an address information offer unit that preferentially offers to a radio terminal, by the radio base station function, address information other than the address information stored in the address information acquisition unit.
10 . A radio terminal that outputs, to a first radio base station, a change request for address information offered by the first radio base station, when the radio terminal performs multi access to a second radio base station that differs from the first radio base station, while communicating with the first radio base station.
11 . The radio device according to claim 2 , wherein the address information acquisition unit is configured to:
start a process for acquiring the address information, the process being triggered when the radio device is booted.
12 . The radio device according to claim 3 , wherein the address information acquisition unit is configured to:
start a process for acquiring the address information, the process being triggered when the radio device is booted.
13 . The radio device according to claim 2 , wherein the address information acquisition unit is configured to:
transmit an address offer request to a different radio base station;
acquire address information allocated to the radio device in response to the request to associate with the radio base station; and
then cancel the association.
14 . The radio device according to claim 3 , wherein the address information acquisition unit is configured to:
transmit an address offer request to a different radio base station;
acquire address information allocated to the radio device in response to the request to associate with the radio base station; and
then cancel the association.
15 . The radio device according to claim 4 , wherein the address information acquisition unit is configured to:
transmit an address offer request to a different radio base station;
acquire address information allocated to the radio device in response to the request to associate with the radio base station; and
then cancel the association.
16 . The radio device according to claim 2 , wherein the address information offer unit is configured to:
disconnect, upon offering address information to a radio terminal with which the radio base station function communicates, communication with the radio terminal after a communication buffer for the communication with the radio terminal becomes empty; and
perform the offer of the address information.
17 . The radio device according to claim 3 , wherein the address information offer unit is configured to:
disconnect, upon offering address information to a radio terminal with which the radio base station function communicates, communication with the radio terminal after a communication buffer for the communication with the radio terminal becomes empty; and
perform the offer of the address information.
18 . The radio device according to claim 4 , wherein the address information offer unit is configured to:
disconnect, upon offering address information to a radio terminal with which the radio base station function communicates, communication with the radio terminal after a communication buffer for the communication with the radio terminal becomes empty; and
perform the offer of the address information.
19 . The radio device according to claim 5 , wherein the address information offer unit is configured to:
disconnect, upon offering address information to a radio terminal with which the radio base station function communicates, communication with the radio terminal after a communication buffer for the communication with the radio terminal becomes empty; and
perform the offer of the address information.
20 . The radio device according to claim 15 , wherein the address information offer unit is configured to:
disconnect, upon offering address information to a radio terminal with which the radio base station function communicates, communication with the radio terminal after a communication buffer for the communication with the radio terminal becomes empty; and
perform the offer of the address information.