Transmit opportunity continuation timeout for directional multi-gigabit networks

Patent metadata

Field	Value
Publication number	US-11337249-B2
Application number	US-201616087092-A
Country	US
Kind code	B2
Filing date	Dec 27, 2016
Priority date	Apr 20, 2016
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

A wireless communication device, system and method. The device includes a memory, and processing circuitry coupled to the memory. The processing circuitry includes logic to: determine a training field length associated with a directional multigigabit (DMG) CTS frame of another wireless communication device; determine a Clear-To-Send time (CTS_Time) parameter based at least in part on the training field length; determine a transmit opportunity (TXOP) continuation timeout for the device based on the CTS_Time parameter; and set a network allocation vector (NAV) for the device based on the TXOP continuation timeout.

First claim

What is claimed is:

1. A wireless communication device comprising a memory, and processing circuitry coupled to the memory, the processing circuitry including logic to:
cause transmission of a Request-to-Send (RTS) frame, the RTS frame including information regarding a length of a Clear-to-Send (CTS) frame to be sent to the device by responder device responding to the RTS frame, wherein the information is based on known beamforming capabilities of the responder device, on a rule predicting a length of a control trailer and beamforming trailer of the CTS frame, and on a length of a training field of the CTS frame; and
process the CTS frame.

2. The device of claim 1 , wherein the information is based on an estimated length of the CTS frame.

3. The device of claim 1 , further including a front-end module (FEM), a radio integrated circuit coupled to the FEM, and a plurality of antennas coupled to the FEM.

4. A wireless communication device including a memory and a processing circuitry coupled to the memory, the processing circuitry including logic to:
determine that the device is different from one or more devices to which a directional multigigabit (DMG) Request-to-Send (RTS) frame is addressed by an access point over a wireless medium;
determine a length of a training field of the DMG RTS frame;
determine a Clear-to-Send (CTS) time parameter associated with a DMG CTS frame sent from another device to the access point, the CTS time parameter being based on the length of the training field of the DMG RTS frame; and
set a network allocation vector (NAV) for the device based on the CTS time parameter to defer access to the wireless medium for a timeout period.

5. The device of claim 4 , wherein the timeout has a value based on a sum of 2×(aSIFSTime), (CTS time parameter) and (2×aSlotTime).

6. The device of claim 4 , wherein the DMG RTS frame is a control mode Physical Layer Convergence Protocol (PLCP) data unit (PPDU) including a preamble, a header block, a data field, Automatic Gain Control (AGC) subfields and training (TRN) subfields.

7. The device of claim 4 , wherein the processing circuitry is to communicate over a 60 GHz frequency band using a multi-user multiple-input multiple-output (MU-MIMO) frame.

8. The device of claim 4 , wherein the logic is to determine the training field length associated with the DMG CTS frame based at least in part on a sum of a control mode preamble time parameter, a control mode header time parameter, and a medium access control protocol data unit (MPDU) time parameter.

9. The device of claim 8 , wherein the logic is to determine the training field length associated with the DMG CTS frame further based on a beamforming training field time parameter.

10. The device of claim 9 , wherein the logic is to determine the training field length associated with the DMG CTS frame further based on the sum plus a beamforming training field time parameter multiplied by a training length field of a received Request-To-Send (RTS) frame.

11. The device of claim 4 , further including a front-end module (FEM) and a radio integrated circuit coupled to the FEM.

12. The device of claim 11 , further including a plurality of antennas coupled to the FEM.

13. A wireless communication device comprising:
means for determining that the device is different from one or more devices to which a directional multigigabit (DMG) Request-to-Send (RTS) frame is addressed by an access point over a wireless medium;
means for determining a length of a training field of the DMG RTS frame;
means for determining a Clear-to-Send (CTS) time parameter associated with a DMG CTS frame sent from another device to the access point, the CTS time parameter being based on the length of the training field of the DMG RTS frame; and
means for setting a network allocation vector (NAV) for the device based on the CTS time parameter to defer access to the wireless medium for a timeout period.

14. The device of claim 13 , wherein the timeout has a value based on a sum of 2×(aSIFSTime), (CTS time parameter) and (2×aSlotTime).

15. A product comprising one or more tangible computer-readable non-transitory storage media comprising computer-executable instructions operable to, when executed by at least one computer processor, enable the at least one computer processor to perform operations including:
causing transmission of a Request-to-Send (RTS) frame, the RTS frame including information regarding a length of a Clear-to-Send (CTS) frame to be sent to a device to include the computer processor by a responder device responding to the RTS frame;
determining the information based on known beamforming capabilities of the responder device, on a rule predicting a length of a control trailer and beamforming trailer of the CTS frame, and on a length of a training field of the CTS frame; and
processing the CTS frame.

16. The product of claim 15 , wherein the information is based on an estimated length of the CTS frame.

17. A product comprising one or more tangible computer-readable non-transitory storage media comprising computer-executable instructions operable to, when executed by at least one computer processor, enable the at least one computer processor to perform operations including:
determining that a device to include the computer processor is different from one or more devices to which a directional multigigabit (DMG) Request-to-Send (RTS) frame is addressed by an access point over a wireless medium;
determining a length of a training field of the DMG RTS frame;
determining a Clear-to-Send (CTS) time parameter associated with a DMG CTS frame sent from another device to the access point, the CTS time parameter being based on the length of the training field of the DMG RTS frame; and
setting a network allocation vector (NAV) for the device based on the CTS time parameter to defer access to the wireless medium for a timeout period.

18. The product of claim 17 , wherein the timeout has a value based on a sum of 2×(aSIFSTime), (CTS time parameter) and (2×aSlotTime).

19. The product of claim 17 , wherein the device is to communicate over a 60 GHz frequency band using a multi-user multiple-input multiple-output (MU-MIMO) frame.

20. The product of claim 17 , the operations further including determining the training field length associated with the DMG CTS frame based at least in part on a sum of a control mode preamble time parameter, a control mode header time parameter, and a medium access control protocol data unit (MPDU) time parameter.

21. The product of claim 20 , the operations further including determining the training field length associated with the DMG CTS frame based on a beamforming training field time parameter.

22. The product of claim 21 , further including determining the training field length associated with the DMG CTS frame based on the sum plus a beamforming training field time parameter multiplied by a training length field of a received Request-To-Send (RTS) frame.

23. The product of claim 17 , further including means for communicating over a 60 GHz frequency band using a multi-user multiple-input multiple-output (MU-MIMO) frame.

Assignees

• Intel Corp

Inventors

• Trainin Solomon
• Cordeiro Carlos
• Cariou Laurent
• Yang Ou
• Kasher Assaf

Classifications

• H04W74/0816 Primary

  with collision avoidance · CPC title

• H04B7/0452

  Multi-user MIMO systems · CPC title

• H04W16/28

  using beam steering · CPC title