Media access control for frequency division full duplex in WLAN

Patent metadata

Field	Value
Publication number	US-11296840-B1
Application number	US-201916670934-A
Country	US
Kind code	B1
Filing date	Oct 31, 2019
Priority date	Oct 31, 2018
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

A first communication device in a wireless local area network (WLAN) determines one or more frequency division, full duplex (FDFD) parameters for an FDFD operation that includes FDFD communications via a first frequency segment and a second frequency segment. The first frequency segment and the second frequency segment are separated by a gap in frequency. The one or more FDFD parameters include a parameter indicating a duration of the FDFD operation. The first communication device generates a communication frame that includes one or more indications of the one or more FDFD parameters. The one or more indications in the communication frame include an indication of the duration of the FDFD operation. The first communication device transmits the communication frame to prompt a plurality of second communication devices to participate in the FDFD operation.

First claim

What is claimed is:

1. A method for frequency division, full duplex (FDFD) communication in a wireless local area network (WLAN), the method comprising:
determining, at a first communication device, one or more FDFD parameters for an FDFD operation that includes FDFD communications via a first frequency segment and a second frequency segment, wherein the first frequency segment and the second frequency segment are separated by a gap in frequency, and wherein determining the one or more FDFD parameters includes determining one or more channel access parameters that one or more second communication devices are to use when contending for access to a channel medium during the FDFD operation;
generating, at the first communication device, a communication frame that includes one or more indications of the one or more FDFD parameters, wherein the one or more indications in the communication frame include one or more respective indications of the one or more channel access parameters;
transmitting, by the first communication device, the communication frame to prompt a plurality of second communication devices to participate in the FDFD operation; and
participating, by the first communication device, in the FDFD operation.

2. The method of claim 1 , wherein:
determining the one or more FDFD parameters for the FDFD operation comprises determining one or both of i) the second frequency segment, and ii) the gap in frequency; and
generating the communication frame comprises including in the communication frame one or both i) an indication of the second frequency segment, and ii) an indication of the gap in frequency.

3. The method of claim 1 , wherein:
determining the one or more FDFD parameters for the FDFD operation comprises determining a duration of the FDFD operation; and
generating the communication frame comprises including in the communication frame an indication of the duration of the FDFD operation.

4. The method of claim 1 , wherein participating in the FDFD operation comprises:
transmitting, by the first communication device, first physical layer (PHY) data units to the plurality of second communication devices via the first frequency segment; and
receiving, at the first communication device, second PHY data units from the plurality of second communication devices via the second frequency segment.

5. The method of claim 1 , wherein participating in the FDFD operation comprises:
receiving, at the first communication device, first physical layer (PHY) data units from a third communication device via the first frequency segment; and
receiving, at the first communication device, second PHY data units from the plurality of second communication devices via the second frequency segment.

6. The method of claim 1 , wherein:
determining the one or more channel access parameters comprises determining one or more backoff parameters corresponding to backoff operations that the one or more second communication devices are to use when contending for access to the channel medium during the FDFD operation; and
generating the communication frame comprises generating the communication frame to include one or more respective indications of the one or more backoff parameters.

7. A first wireless communication device for communicating in a wireless local area network (WLAN), the first communication device comprising:
a wireless network interface device comprising one or more integrated circuits (IC) devices configured to:
determine one or more frequency division, full duplex (FDFD) parameters for an FDFD operation that includes FDFD communications via a first frequency segment and a second frequency segment, wherein the first frequency segment and the second frequency segment are separated by a gap in frequency, and wherein determining the one or more FDFD parameters includes determining one or more channel access parameters that one or more second communication devices are to use when contending for access to a channel medium during the FDFD operation,
generate a communication frame that includes one or more indications of the one or more FDFD parameters, wherein the one or more indications in the communication frame include one or more respective indications of the one or more channel access parameters,
transmit the communication frame to prompt a plurality of second wireless communication devices to participate in the FDFD operation, and
participate in the FDFD operation.

8. The first wireless communication device of claim 7 , wherein the one or more IC devices are configured to:
as part of determining the one or more FDFD parameters, determine one or both of i) the second frequency segment, and ii) the gap in frequency; and
include in the communication frame one or both i) an indication of the second frequency segment, and ii) an indication of the gap in frequency.

9. The first wireless communication device of claim 7 , wherein the one or more IC devices are configured to:
as part of determining the one or more FDFD parameters, determine a duration of the FDFD operation; and
include in the communication frame an indication of the duration of the FDFD operation.

10. The first wireless communication device of claim 7 , wherein the one or more IC devices are configured to:
transmit first physical layer (PHY) data units to the plurality of second wireless communication devices via the first frequency segment as part of the FDFD operation; and
receive second PHY data units from the plurality of second wireless communication devices via the second frequency segment as part of the FDFD operation.

11. The first wireless communication device of claim 7 , wherein the one or more IC devices are configured to:
receive first physical layer (PHY) data units from a third communication device via the first frequency segment as part of the FDFD operation; and
receive second PHY data units from the plurality of second wireless communication devices via the second frequency segment as part of the FDFD operation.

12. The first wireless communication device of claim 7 , wherein the one or more IC devices are configured to:
determine one or more backoff parameters corresponding to backoff operations that the one or more second communication devices are to use when contending for access to the channel medium during the FDFD operation; and
generate the communication frame to include one or more respective indications of the one or more backoff parameters.

13. A method for frequency division, full duplex (FDFD) communication in a wireless local area network (WLAN), the method comprising:
receiving, at a first communication device, a communication frame that includes one or more indications of one or more FDFD parameters for an FDFD operation that includes FDFD communications via a first frequency segment and a second frequency segment, wherein the one or more indications in the communication frame include one or more respective indications of one or more channel access parameters that the first communication device is to use when contending for access to a channel medium corresponding to the second frequency segment during the FDFD operation;
determining, at a first communication device, one or more FDFD parameters for the FDFD operation using the one or more indications of the one or more FDFD parameters in the communication frame, including using the one or more respective indications of the one or more channel access parameters to determine the one or more channel access parameters that the first communication device is to use when contending for access to the channel medium during the FDFD operation; and
participating, by the first communication device,

Assignees

• Marvell Int Ltd
• Marvell Asia Pte Ltd

Inventors

• Jiang Jinjing
• Chu Liwen
• Zhang Hongyuan
• Lou Hui-Ling

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W8/04

  Registration at HLR or HSS [Home Subscriber Server] · CPC title

• H04W28/10

  Flow control {between communication endpoints} · CPC title