SYSTEMS AND METHODS FOR GENERATING AND DECODING SHORT CONTROL FRAMES IN WIRELESS COMMUNICATIONS

• US 20170347288A1
• Filed: 08/21/2017
• Published: 11/30/2017
• Est. Priority Date: 04/08/2013
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Merlin, Simone, Abraham, Santosh, Wentink, Maarten Menzo, Quan, Zhi, Asterjadhi, Alfred
• Application Number:
  US15/682,342
• Publication Number:
  US 20170347288A1
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/0029 Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling power control H04W52/04
• CPC Class Codes: H04L 1/0073 Special arrangements for feedback channel
• CPC Class Codes: H04L 1/0079 Formats for control data H04L1/16 takes precedence; training sequences H04L25/00 and H04L27/00
• CPC Class Codes: H04W 28/0273 adapting protocols for flow control or congestion control to wireless environment, e.g. adapting transmission control protocol [TCP] wireless network protocols or protocol adaptations to wireless operation, e.g. wireless application protocol H04W80/00
• CPC Class Codes: H04W 74/002 Transmission of channel access control information

Abstract

Systems, methods, and devices for communicating short control frames are described herein. In some aspects, a method of wireless communication includes generating a control frame comprising a contention free end (CF-end) frame, the CF-end frame comprising a physical layer preamble having a type field, the type field including an indicator indicating the CF-end frame is a null data packet (NDP). The method further includes transmitting the control frame.

Claims

1. A method of wireless communication, comprising:

generating a null data packet (NDP) control frame comprising a contention free end (CF-end) frame, the NDP control frame comprising a physical layer preamble having a type field, the type field including an indicator indicating the CF-end frame; and

transmitting the NDP control frame.

2. The method of claim 1, wherein the type field includes 3 bits.

3. The method of claim 2, wherein the NDP control frame further comprises an indicator differentiating between a CF-end and a clear to send (CTS).

4. The method of claim 3, wherein the indicator comprises 1 bit, wherein if the bit is set to 1 the NDP control frame is the CF-end, and wherein if the bit is set to 0 the NDP control frame is the CTS.

5. The method of claim 1, wherein the NDP control frame includes a duration field.

6. The method of claim 5, wherein the duration field is set to 0, or to a non-zero value of a network allocation vector (NAV) that was sent from a previously transmitted frame of a wireless device, to indicate the completion of a transmission opportunity.

7. The method of claim 5, wherein the duration field has a size of 10 bits in length indicating the NDP control frame has a 1 MHz bandwidth.

8. The method of claim 5, wherein the duration field has a size of 15 bits in length indicating the NDP control frame has a greater than or equal to 2 MHz bandwidth.

9. The method of claim 1, wherein the NDP control frame includes an identifier, the identifier identifying a wireless device transmitting the NDP control frame.

10. The method of claim 9, wherein the identifier is an association identifier (AID) or a medium access control (MAC) address of the wireless device.

11. The method of claim 9, wherein the identifier includes 9 bits.

12. The method of claim 1, wherein the NDP control frame includes an identifier, the identifier having a value of a network allocation vector (NAV) that was sent from a previously transmitted frame of a wireless device.

13. A device for communicating in a wireless network, the device comprising:

a processor configured to generate a null data packet (NDP) control frame comprising a contention free end (CF-end) frame, the NDP control frame comprising a physical layer preamble having a type field, the type field including an indicator indicating the CF-end frame; and

a transmitter configured to transmit the NDP control frame.

14. The device of claim 13, wherein the type field includes 3 bits.

15. The device of claim 14, wherein the NDP control frame further comprises an indicator differentiating between a CF-end and clear to send (CTS).

16. The device of claim 15, wherein the indicator comprises 1 bit, wherein if the bit is set to 1 the NDP control frame is the CF-end, and wherein if the bit is set to 0 the NDP control frame is the CTS.

17. The device of claim 13, wherein the NDP control frame includes a duration field.

18. The device of claim 17, wherein the duration field is set to 0, or to a non-zero value of a network allocation vector (NAV) that was sent from a previously transmitted frame of the device, to indicate the completion of a transmission opportunity.

19. The device of claim 17, wherein the duration field has a size of 10 bits in length indicating the NDP control frame has a 1 MHz bandwidth.

20. The device of claim 17, wherein the duration field has a size of 15 bits in length indicating the NDP control frame has a greater than or equal to 2 MHz bandwidth.

21. The device of claim 13, wherein the NDP control frame includes an identifier, the identifier identifying a wireless device transmitting the NDP control frame.

22. The device of claim 21, wherein the identifier is an association identifier (AID) or a medium access control (MAC) address of the device.

23. The device of claim 21, wherein the identifier includes 9 bits.

24. The device of claim 13, wherein the NDP control frame includes an identifier, the identifier having a value of a network allocation vector (NAV) that was sent from a previously transmitted frame of the device.

25. A device for communicating in a wireless network, the device comprising:

means for generating a null data packet (NDP) control frame comprising a contention free end (CF-end) frame, the NDP control frame comprising a physical layer preamble having a type field, the type field including an indicator indicating the CF-end frame; and

means for transmitting the NDP control frame.

26. The device of claim 25, wherein the type field includes 3 bits.

27. The device of claim 26, wherein the NDP control frame further comprises an indicator differentiating between a CF-end and a clear to send (CTS).

28. The device of claim 27, wherein the indicator comprises 1 bit, wherein if the bit is set to 1 the NDP control frame is the CF-end, and wherein if the bit is set to 0 the NDP control frame is the CTS.

29. The device of claim 25, wherein the NDP control frame includes a duration field.

30. The device of claim 29, wherein the duration field is set to 0, or to a non-zero value of a network allocation vector (NAV) that was sent from a previously transmitted frame of a wireless device, to indicate the completion of a transmission opportunity.