Method for communication based on identifying information assignment and apparatus for the same

• US 9,888,439 B2
• Filed: 11/17/2015
• Issued: 02/06/2018
• Est. Priority Date: 01/16/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Eun Sun, Seok, Yong Ho, Park, Jong Hyun, You, Hyang Sun
• Primary Examiner(s): NGUYEN, MINH TRANG T
• Application Number:
  US14/943,497
• Publication Number:
  US 20160165534A1
• Time in Patent Office: 812 Days
• Field of Search: None
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A communication method based on identifying information assignment in a wireless local area network (WLAN) system, performed by a station (STA), is provided. The method includes receiving an identifier assignment message from an access point (AP), wherein the identifier assignment message comprises identifying information for the STA, and TIM offset information for a time point at which at least one traffic indication map (TIM) element for the STA starts to be transmitted; receiving a first TIM element from the AP at a time point indicated by the TIM offset information; determining whether the first TIM element comprises the identifying information; and receiving a first data frame from the AP if the first TIM element contains the identifying information.

Claims

1. A method for performing an association with an access point (AP) in a wireless local area network, the method comprising:

transmitting, by a station to the AP, an association request frame requesting allocation of an association identifier (AID) of the station; and

receiving, by the station, an association response frame from the AP in response to the association request frame, the association response frame including an AID information element comprising an AID field, an AID switch count field, and an AID interval field,

the AID field indicating a new AID when the AP changes an AID of the station,

the AID switch count field indicating a count value, in units of beacon intervals, that the AP sets for the station to switch to the new AID, and

the AID interval field indicating an interval, in units of beacon intervals, during which the station wakes to receive a beacon frame from the AP.

2. The method of claim 1, wherein the beacon frame includes a traffic indication map (TIM) element including the new AID.

3. The method of claim 2, wherein the TIM element indicates whether there is buffered traffic for the station identified by the new AID.

4. The method of claim 1, wherein the AID information element further comprises a length field indicating the length of the AID information element.

5. The method of claim 1, wherein the AID field has a length of two octets.

6. A wireless station performing an association with an access point (AP) in a wireless local area network, the wireless station comprising:

a transceiver that transmits and receives signals; and

a processor, coupled to the transceiver, that;

instructs the transceiver to transmit to the AP an association request frame requesting allocation of an association identifier (AID) of the station; and

instructs the transceiver to receive an association response frame from the AP in response to the association request frame, the association response frame including an AID information element comprising an AID field, an AID switch count field, and an AID interval field,

the AID field indicating a new AID when the AP changes an AID of the station,

the AID switch count field indicating a count value, in units of beacon intervals, that the AP sets for the station to switch to the new AID, and

the AID interval field indicating an interval, in units of beacon intervals, during which the station wakes to receive a beacon frame from the AP.

7. The wireless station of claim 6, wherein the beacon frame includes a traffic indication map (TIM) element including the new AID.

8. The wireless station of claim 7, wherein the TIM element indicates whether there is buffered traffic for the station identified by the new AID.

9. The wireless station of claim 6, wherein the AID information element further comprises a length field indicating the length of the AID information element.

10. The wireless station of claim 6, wherein the AID field has a length of two octets.

11. A method for performing an association with a station in a wireless local area network, the method comprising:

receiving, by an access point (AP), an association request frame from the station requesting allocation of an association identifier (AID) of the station; and

transmitting, by the AP, an association response frame in response to the association request frame to the station, the association response frame including an association identifier (AID) information element comprising an AID field, an AID switch count field, and an AID interval field,

the AID field indicating a new AID when the AP changes an AID of the station,

the AID switch count field indicating a count value, in units of beacon intervals, that the AP sets for the station to switch to the new AID, and

the AID interval field indicating an interval, in units of beacon intervals, during which the station wakes to receive a beacon frame from the AP.

12. The method of claim 11, wherein the beacon frame includes a traffic indication map (TIM) element including the new AID.

13. The method of claim 12, wherein the TIM element indicates whether there is buffered traffic for the station identified by the new AID.

14. The method of claim 11, wherein the AID information element further comprises a length field indicating the length of the AID information element.

15. The method of claim 11, wherein the AID field has a length of two octets.