CONTROL AND OPERATION IN WIRELESS LOCAL AREA NETWORK

• US 20190021106A1
• Filed: 01/13/2017
• Published: 01/17/2019
• Est. Priority Date: 01/14/2016
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Inventors: OTERI, Oghenekome, LOU, Hanqing, LA SITA, Frank, XI, Fengjun
• Granted Patent: US 11,019,650 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04L 1/0006 by adapting the transmission format
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/2603 Signal structure ensuring backward compatibility with legacy system
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 52/24 using SIR [Signal to Interference Ratio] or other wireless path parameters
• CPC Class Codes: H04W 52/245 taking into account received signal strength
• CPC Class Codes: H04W 52/365 Power headroom reporting
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

Systems, methods, and instrumentalities are disclosed for range extension, basic service set (BSS) color labeling, and multi-user (MU) fragmentation and control in WLANs. A range extension notification/enablement scheme, a clear channel assessment (CCA), a headroom indication, and/or power scaling may be provided for a range extension mode. BSS color may be provided for multiple-BSSs under an access point (AP). Uplink (UL) transmission may be provided with different fragmentation capabilities. A high-efficiency (HE) trigger-based UL NDP physical layer convergence protocol (PLCP) protocol data unit (PPDU) frame may be provided. A station (STA) may receive a trigger frame comprising a null data packet (NDP) indication and a trigger type. The STA may determine that the STA is an intended recipient of the trigger frame. The STA may prepare an NDP PPDU for a control frame and/or a management frame based on the trigger type.

Claims

1-20. -20. (canceled)

21. A station (STA) comprising:

a transmitter, a receiver and a processor;

the receiver configured to receive a trigger frame including at least an indication for uplink (UL) null data packet (NDP) frames from a plurality of STAs and a trigger type;

in response to the received trigger frame, and based on the trigger type, the processor configured to generate a first NDP frame; and

the transmitter configured to transmit the first NDP frame including at least a feedback report.

22. The STA of claim 21, wherein:

the processor is further configured to verify that the STA is an intended recipient of the trigger frame by checking a field in the received trigger frame.

23. The STA of claim 21, wherein the indication for UL NDP frames is in a common information field of the trigger frame.

24. The STA of claim 21, wherein the indication for UL NDP frames is in a user-specific information field of the trigger frame.

25. The STA of claim 21, wherein the first NDP frame further includes an UL resource request.

26. The STA of claim 25, wherein the UL resource request is an UL TXOP request.

27. The STA of claim 21, wherein the first NDP frame is a small control frame or a management frame.

28. The STA of claim 21, wherein the feedback report is an UL traffic report.

29. The STA of claim 21 configured as a high-efficiency (HE) STA.

30. The STA of claim 21, wherein:

the processor and transmitter are further configured to determine transmission parameters based at least in part on the received trigger frame.

31. A method performed by a station (STA), the method comprising:

receiving a trigger frame including at least an indication for uplink (UL) null data packet (NDP) frames from a plurality of STAs and a trigger type;

in response to the received trigger frame, and based on the trigger type, generating a first NDP frame; and

transmitting the first NDP frame including at least a feedback report.

32. The method of claim 31, further comprising:

verifying that the STA is an intended recipient of the trigger frame by checking a field in the received trigger frame.

33. The method of claim 31, wherein the indication for UL NDP frames is in a common information field of the trigger frame.

34. The method of claim 31, wherein the indication for UL NDP frames is in a user-specific information field of the trigger frame.

35. The method of claim 31, wherein the first NDP frame further includes an UL resource request.

36. The method of claim 35, wherein the UL resource request is an UL TXOP request.

37. The method of claim 31, wherein the first NDP frame is a small control frame or a management frame.

38. The method of claim 31, wherein the feedback report is an UL traffic report.

39. The method of claim 31, wherein the STA is configured as a high-efficiency (HE) STA.

40. The method of claim 31, further comprising:

determining transmission parameters based at least in part on the received trigger frame.