Aid reassignment method, and apparatus for performing said aid reassignment method

Patent metadata

Field	Value
Publication number	US-2015146524-A1
Application number	US-201314411302-A
Country	US
Kind code	A1
Filing date	Jun 28, 2013
Priority date	Jun 28, 2012
Publication date	May 28, 2015
Grant date	—

Abstract

Disclosed are an AID reassignment method capable of optimally operating a wireless LAN system, and an apparatus for performing the AID reassignment method. The method comprises the steps of: generating a reconnection request frame for an AID reassignment request; transmitting the generated reconnection request frame to the currently associated access point; and receiving a reconnection response frame including AID reassignment information from the access point. Thus, the AID of the currently associated terminal can be dynamically reassigned according to a change in the characteristics of the terminal, thus operating a wireless LAN system in an optimum manner.

First claim

What is claimed is:

1 . A method of reassigning an association ID (AID), which is performed by a terminal, the method comprising:
generating a reassociation request frame for an AID reassignment request; transmitting the generated reassociation request frame to a currently associated access point; and receiving a reassociation response frame including AID reassignment information from the access point.

2 . The method of claim 1 , wherein the generating of the reassociation request frame for the AID reassignment request comprises generating the reassociation request frame including an AID reassignment request element.

3 . The method of claim 2 , wherein the AID reassignment request element comprises an AID reassignment cause field.

4 . The method of claim 3 , wherein the AID reassignment cause field comprises at least one of service type change information, low power mode information, listen interval change information, traffic pattern change information, and remaining battery information.

5 . The method of claim 4 ,
wherein the reassociation request frame further comprises a service type element, and wherein when the AID reassignment cause field includes the service type change information, the service type element includes a service type that is changed based on the service type change information.

6 . The method of claim 1 , further comprising determining whether the AID reassignment is needed.

7 . The method of claim 6 , wherein the determining of whether the AID reassignment is needed comprises determining whether the AID reassignment is needed based on at least one of traffic pattern information, battery information, and service type information of the terminal.

8 . A method of reassigning an association ID (AID), which is performed by an access point, the method comprising:
receiving a reassociation request frame from a currently associated terminal; reassigning an AID of the terminal based on the reassociation request frame; and transmitting a reassociation response frame including the reassigned AID to the terminal.

9 . The method of claim 8 , wherein the receiving of the reassociation request frame from the currently associated terminal comprises receiving the reassociation request frame including an AID reassignment request element from the currently associated terminal.

10 . The method of claim 9 , wherein the AID reassignment request element comprises an AID reassignment cause field.

11 . The method of claim 10 , wherein the reassigning of the AID of the terminal based on the reassociation request frame comprises:
checking a current AP address, a service set ID (SSID), and the AID reassignment request element included in the reassociation request frame; and reassigning the AID of the terminal based on the AID reassignment cause included in the AID reassignment request element when the reassociation request frame is checked to be the AID reassignment request.

12 . The method of claim 8 , wherein the reassociation response frame comprises at least one of AID reassignment success information, AID reassignment failure information, and information on the reassigned AID.

13 . A terminal comprising:
a transceiving unit; and a processing unit configured to generate a reassociation request frame for an association ID (AID) reassignment request; transmit the generated reassociation request frame to a currently associated access point; and receive a reassociation response frame including AID reassignment information from the access point.

14 . The terminal of claim 13 , wherein the processing unit generates a reassociation request frame including an AID reassignment request element.

15 . The terminal of claim 14 , wherein the AID reassignment request element comprises an AID reassignment cause field.

16 . The terminal of claim 15 , wherein the AID reassignment cause field comprises at least one of service type change information, low power mode information, listen interval change information, traffic pattern change information, and remaining battery information.

17 . The terminal of claim 13 , wherein the processing unit determines whether the AID reassignment is needed based on at least one of traffic pattern information, battery information, and service type information of the terminal.

18 . An access point comprising:
a communication unit; and a processing unit configured to reassign an association ID (AID) of a terminal based on a reassociation request frame including an AID reassignment request element received from the terminal through the communication unit and transmit a reassociation response frame including the reassigned AID to the terminal through the communication unit.

19 . The access point of claim 18 , wherein the AID reassignment request element comprises an AID reassignment cause field.

20 . The access point of claim 18 , wherein the processing unit checks a current AP address, a service set ID (SSID), and the AID reassignment request element included in the reassociation request frame and, when the reassociation request frame is checked to be an AID reassignment request, reassign the AID of the terminal based on the AID reassignment cause included in the AID reassignment request element.

Assignees

• Kt Corp

Inventors

• Jeong Yang Seok
• Kim Joo Young

Classifications

• H04W8/22 Primary

  Processing or transfer of terminal data, e.g. status or physical capabilities · CPC title

• H04W88/08

  Access point devices · CPC title

• H04W48/14

  using user query {or user detection} · CPC title

• H04W88/02

  Terminal devices · CPC title

• H04W28/0215 Primary

  based on user or device properties, e.g. MTC-capable devices (services for machine-to-machine communication [M2M] or machine type communication [MTC] H04W4/70; wireless resource selection or allocation plan definition based on terminal or device properties H04W72/51) · CPC title