METHOD FOR TRANSCEIVING DATA ON BASIS OF SERVICE PERIOD SCHEDULING IN WIRELESS LAN SYSTEM AND APPARATUS FOR SUPPORTING SAME

• US 20140204821A1
• Filed: 11/22/2012
• Published: 07/24/2014
• Est. Priority Date: 11/23/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seok, Yong Ho, You, Hyang Sun, Park, Jong Hyun
• Granted Patent: US 9,629,078 B2
• Time in Patent Office: Days
• US Class Current: 370/311
• 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 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Provided is a method for transceiving data in a wireless LAN system on the basis of station (STA)-based service period scheduling. The method comprises entering an awake state, configuring a service period for transceiving an access point (AP) and data, transceiving the AP and the data during the service period, and entering a doze state when the service period ends.

Claims

1-16. -16. (canceled)

17. A method for power save mode operation in a wireless local area network system, the method comprising:

transmitting a wakeup time request to the access point for requesting the wakeup time;

receiving a wakeup time response from the access point, wherein the wakeup time response indicates an acceptance of the request of the wakeup time;

operating in an awake state at the wakeup time; and

remaining in the awake state until the station receives a next wakeup time information related to a next wakeup time or receives an end indication indicating an end of service period during which the station is in the awake state.

18. The method of claim 17, further comprising, entering into a doze state after the reception of the wakeup time response.

19. The method of claim 17, further comprising, receiving the next wakeup time information from the access point,

wherein the next wakeup time information indicates the next wakeup time.

20. The method of claim 19, further comprising, entering into the doze state after the reception of the next wakeup time information.

21. The method of claim 19, further comprising, requesting the next wakeup time, if the station does not receive the next wakeup time information during the awake state, and

wherein the next wakeup time information is transmitted in response to the request of the second wakeup time.

22. The method of claim 19, further comprising, operating in the awake state at the next wakeup time.

23. The method of claim 17, further comprising:

receiving the end indication indicating the end of the service period; and

entering into the doze state after the reception of the indication.

24. The method of claim 17, wherein the wakeup time request is transmitted in an association request frame.

25. The method of claim 17, wherein the wakeup time response is transmitted in an association response frame.

26. The method of claim 17, wherein the station is already associated with the access point before the configuration of the first wakeup time.

28. The wireless apparatus of claim 17, wherein the processor is further configured to,

enter into a doze state after the reception of the wakeup time response.

27. A wireless apparatus operating in a power save mode in a wireless local area network system, the wireless apparatus comprising:

a transceiver transmitting and receiving radio signals; and

a processor operably coupled to the transceiver, wherein the processor is configured to;

transmit a wakeup time request to an access point for requesting the wakeup time,

receive a wakeup time response from the access point, wherein the wakeup time response indicates an acceptance of the request of the wakeup time,

operating in an awake state at the wakeup time, and

remain in the awake state until the station receives a next wakeup time information related to a next wakeup time or receives an end indication indicating an end of service period during which the station is in the awake state.

29. The wireless apparatus claim 27, wherein the processor is further configured to,

receive the next wakeup time information from the access point,

wherein the next wakeup time information indicates the next wakeup time.

30. The wireless apparatus claim 29, wherein the processor is further configured to,

enter into the doze state after the reception of the next wakeup time information.

31. The wireless apparatus claim 29, wherein the processor is further configured to,

request the next wakeup time, if the station does not receive the next wakeup time information during the awake state, and

wherein the next wakeup time information is transmitted in response to the request of the second wakeup time.

32. The wireless apparatus claim 29, wherein the processor is further configured to, operate in the awake state at the next wakeup time.

33. The wireless apparatus claim 27, wherein the processor is further configured to:

receive the end indication indicating the end of the service period; and

enter into the doze state after the reception of the indication.

34. The wireless apparatus of claim 27, wherein the wakeup time request is transmitted in an association request frame.

35. The wireless apparatus of claim 27, wherein the wakeup time response is transmitted in an association response frame.

36. The wireless apparatus of claim 27, wherein the station is already associated with the access point before the configuration of the first wakeup time.