Multiple narrow bandwidth channel access and MAC operation within wireless communications

• US 20140307653A1
• Filed: 04/14/2014
• Published: 10/16/2014
• Est. Priority Date: 04/15/2013
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Liu, Yong, Porat, Ron, Jindal, Nihar, Erceg, Vinko, Fischer, Matthew James, Wong, Chiu Ngok Eric
• Granted Patent: US 9,712,231 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04B 7/2612 Arrangements for wireless medium access control, e.g. by allocating physical layer transmission capacity H04B7/2615 - H04B7/2643 take precedence; provision for broadband connection H04Q11/0478
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal

Abstract

A wireless communication device is implemented to include a communication interface and a processor. The processor is configured to process communications associated with the other wireless communication devices within the wireless communication system to determine one or more traffic characteristics of those communications as well as one or more class characteristics of the other wireless communication devices. The processor is configured to classify the communications into one or more access categories based on the one or more traffic characteristics and is configured to classify the other devices into one or more device class categories based on the one or more class characteristics. The processor is then configured to generate one or more channel access control signals based on these classifications. The communication interface of the device is configured to transmit the one or more channel access control signals to one or more of the other devices.

Claims

1. A wireless communication device comprising:

a communication interface configured to;

support communications with a plurality of other wireless communication devices; and

transmit at least one channel access control signal to at least one of the plurality of other wireless communication devices, wherein the at least one channel access control signal specifies channel access for the at least one of the plurality of other wireless communication devices; and

a processor configured to;

process the communications associated with the plurality of other wireless communication devices to determine one or more traffic characteristics of the communications and one or more class characteristics of the plurality of other wireless communication devices;

classify the communications into a plurality of access categories based on the one or more traffic characteristics;

classify the plurality of other wireless communication devices into a plurality of device class categories based on the one or more class characteristics; and

generate the at least one channel access control signal based on classification of the communications into the plurality of access categories and classification of the plurality of other wireless communication devices into the plurality of device class categories.

2. The wireless communication device of claim 1, wherein the processor is further configured to:

generate the at least one channel access control signal to indicate a first sub-channel of a channel for use by a first other wireless communication device and a second sub-channel of the channel that is different than the first sub-channel for use by a second other wireless communication device to support subsequent communications with the wireless communication device, wherein the channel is one of a plurality of channels specified within an IEEE 802.11 communication protocol.

3. The wireless communication device of claim 1, further comprising:

the communication interface configured to receive one or more channel requests from one or more of the plurality of other wireless communication devices; and

the processor configured to;

process the one or more channel requests to determine a channel assignment of a plurality of channels specified within an IEEE 802.11 communication protocol for the plurality of other wireless communication devices; and

generate the at least one channel access control signal to indicate the channel assignment that includes a first sub-channel of a channel for use by a first other wireless communication device and a second sub-channel of the channel that is different than the first sub-channel for use by a second other wireless communication device to support subsequent communications with the wireless communication device.

4. The wireless communication device of claim 1, wherein the processor is further configured to:

generate the at least one channel access control signal to indicate a first one or more backoff parameters for use by a first other wireless communication device and a second one or more backoff parameters that are different than the first one or more backoff parameters for use by a second other wireless communication device to acquire channel access and to support subsequent communications with the wireless communication device.

5. The wireless communication device of claim 1, wherein the processor is further configured to:

process the communications to determine efficiency of the communications based on at least one of modulation coding set (MCS), physical layer (PHY) data rate, media access control (MAC) data rate, and channel bandwidth of the communications; and

generate the at least one channel access control signal to indicate one or more enhanced distributed channel access (EDCA) parameters that are based on the efficiency of the communications and one or more of the plurality of access categories for use by at least one of the plurality of wireless communication devices to support subsequent communications with the wireless communication device.

6. The wireless communication device of claim 1, wherein the processor is further configured to:

process the communications to determine efficiency of the communications based on at least one of modulation coding set (MCS), physical layer (PHY) data rate, media access control (MAC) data rate, and channel bandwidth of the communications; and

generate the at least one channel access control signal to indicate an override of one or more enhanced distributed channel access (EDCA) default parameters with one or more additional EDCA parameters based on the efficiency of the communications for use by at least one of the plurality of wireless communication devices to support subsequent communications with the wireless communication device.

7. The wireless communication device of claim 1, wherein:

the plurality of access categories includes one or more of voice access category, video access category, best effort access category, and background access category; and

the plurality of device class categories includes one or more of first class device category that includes at least one communication device permitted to communicate within one or more restricted access windows (RAWs) but at no other time, second class device category that includes at least one communication device prohibited to communicate within the one or more RAWs but permitted to communicate during at least one additional time, and third class device category that includes at least one communication device permitted to communicate within the one or more RAWs and also during the at least one additional time.

8. The wireless communication device of claim 1 further comprising:

an access point (AP), wherein the plurality of other wireless communication devices includes at least one wireless station (STA).

9. A wireless communication device comprising:

a communication interface configured to;

support communications with a first other communication device; and

receive at least one channel access control signal from the first other communication device, wherein the at least one channel access control signal specifies channel access for the wireless communication device and a second other wireless communication device; and

a processor configured to;

generate another signal that is characterized by an efficiency that is based on at least one of modulation coding set (MCS), physical layer (PHY) data rate, media access control (MAC) data rate, and channel bandwidth;

identify at least one sub-channel of a channel for use by the wireless communication device based on the at least one channel access control signal, wherein the channel is one of a plurality of channels specified within an IEEE 802.11 communication protocol;

determine one or more enhanced distributed channel access (EDCA) parameters for use by the wireless communication device to acquire access to the at least one sub-channel of a channel based on the at least one channel access control signal and the efficiency that characterizes the other signal; and

when access to the at least one sub-channel of the channel is acquired based on the determined one or more EDCA parameters, direct the communication interface to transmit the other signal to the first other communication device.

10. The wireless communication device of claim 9 further comprising:

the processor configured to;

generate the other signal based on at least one of a plurality of access categories that includes one or more of voice access category, video access category, best effort access category, and background access category; and

determine the one or more EDCA parameters for use by the wireless communication device to acquire access to the at least one sub-channel of the channel based on the at least one channel access control signal, the efficiency that characterizes the other signal, and the at least one of the plurality of access categories of the other signal.

11. The wireless communication device of claim 9 further comprising:

the processor configured to generate a channel request for the at least one sub-channel of the channel; and

the communication interface configured to transmit the channel request to the first other wireless communication device before receiving at least one channel access control signal from the first other communication device.

12. The wireless communication device of claim 9, wherein the processor is further configured to:

determine the one or more enhanced distributed channel access (EDCA) parameters using one or more EDCA default parameters and an override of one or more of the one or more EDCA default parameters with one or more additional EDCA parameters indicated within the at least one channel access control signal.

13. The wireless communication device of claim 9 further comprising:

a wireless station (STA), wherein the first other wireless communication device includes an access point (AP).

14. A method for execution by a wireless communication device, the method comprising:

via a communication device of the wireless communication device, supporting communications with a plurality of other wireless communication devices;

processing the communications associated with the plurality of other wireless communication devices to determine one or more traffic characteristics of the communications and one or more class characteristics of the plurality of other wireless communication devices;

classifying the communications into a plurality of access categories based on the one or more traffic characteristics;

classifying the plurality of other wireless communication devices into a plurality of device class categories based on the one or more class characteristics;

generating at least one channel access control signal based on classification of the communications into the plurality of access categories and classification of the plurality of other wireless communication devices into the plurality of device class categories, wherein the at least one channel access control signal specifies channel access for at least one of the plurality of other wireless communication devices; and

via the communication device of the wireless communication device, transmitting the at least one channel access control signal to the at least one of the plurality of other wireless communication devices.

15. The method of claim 14 further comprising:

generating the at least one channel access control signal to indicate a first sub-channel of a channel for use by a first other wireless communication device and a second sub-channel of the channel that is different than the first sub-channel for use by a second other wireless communication device to support subsequent communications with the wireless communication device, wherein the channel is one of a plurality of channels specified within an IEEE 802.11 communication protocol.

16. The method of claim 14 further comprising:

via the communication device of the wireless communication device, receiving one or more channel requests from one or more of the plurality of other wireless communication devices;

processing the one or more channel requests to determine a channel assignment of a plurality of channels specified within an IEEE 802.11 communication protocol for the plurality of other wireless communication devices; and

generating the at least one channel access control signal to indicate the channel assignment that includes a first sub-channel of a channel for use by a first other wireless communication device and a second sub-channel of the channel that is different than the first sub-channel for use by a second other wireless communication device to support subsequent communications with the wireless communication device.

17. The method of claim 14 further comprising:

processing the communications to determine efficiency of the communications based on at least one of modulation coding set (MCS), physical layer (PHY) data rate, media access control (MAC) data rate, and channel bandwidth of the communications; and

generating the at least one channel access control signal to indicate one or more enhanced distributed channel access (EDCA) parameters that are based on the efficiency of the communications and one or more of the plurality of access categories for use by at least one of the plurality of wireless communication devices to support subsequent communications with the wireless communication device.

18. The method of claim 14 further comprising:

processing the communications to determine efficiency of the communications based on at least one of modulation coding set (MCS), physical layer (PHY) data rate, media access control (MAC) data rate, and channel bandwidth of the communications; and

generating the at least one channel access control signal to indicate an override of one or more enhanced distributed channel access (EDCA) default parameters with one or more additional EDCA parameters based on the efficiency of the communications for use by at least one of the plurality of wireless communication devices to support subsequent communications with the wireless communication device.

19. The method of claim 14, wherein:

the plurality of access categories includes one or more of voice access category, video access category, best effort access category, and background access category; and

the plurality of device class categories includes one or more of first class device category that includes at least one communication device permitted to communicate within one or more restricted access windows (RAWs) but at no other time, second class device category that includes at least one communication device prohibited to communicate within the one or more RAWs but permitted to communicate during at least one additional time, and third class device category that includes at least one communication device permitted to communicate

20. The method of claim 14, wherein the wireless communication device is an access point (AP), and the plurality of other wireless communication devices includes at least one wireless station (STA).