Beamforming feedback frame formats within multiple user, multiple access, and/or MIMO wireless communications
View Patent ↗Beamforming feedback frame formats within multiple user, multiple access, and/or MIMO wireless communications. A transmitting wireless communication device (TX) transmits a sounding frame to one or more receiving wireless communication devices (RXs) using one or more antennae and one or more clusters. Any antenna/cluster combination may be employed in communications between TXs and RXs. The one or more RXs receive/process the sounding frame to determine a type of beamforming feedback frame to be provided to the TX. Any one of a variety of beamforming feedback frame types and a types of information may be contained within a respective beamforming feedback frame including various characteristics of the respective communication channel between the TX and each of the various RXs. A common beamforming feedback frame format may be supported and employed by all such wireless communication devices (e.g., TX and RXs) when performing MU-MIMO operation such as in accordance with IEEE 802.11ac/VHT.
1. A wireless communication device comprising:
a communication interface; and
a processor configured to:
receive, via the communication interface, a beamforming feedback frame from a first other wireless communication device;
generate a multiple user (MU) beamformed frame based on information included within the beamforming feedback frame that characterizes a communication pathway between the wireless communication device and the first other wireless communication device, wherein the MU beamformed frame includes data for both the first other wireless communication device and a second other wireless communication device and includes no beamforming based on another communication pathway between the wireless communication device and the second other wireless communication device; and
transmit, via the communication interface, the MU beamformed frame to the first other wireless communication device and the second other wireless communication device.
2. The wireless communication device of claim 1 , wherein the processor is further configured to:
receive another beamforming feedback frame from the second other wireless communication device;
generate another MU beamformed frame based on other information included within the another beamforming feedback frame that characterizes the another communication pathway between the wireless communication device and the second other wireless communication device, wherein the another MU beamformed frame includes other data for both the first other wireless communication device and the second other wireless communication device; and
transmit the another MU beamformed frame to the first other wireless communication device and the second other wireless communication device.
3. The wireless communication device of claim 1 , wherein the processor is further configured to:
generate a sounding frame; and
transmit the sounding frame to at least one of the first other wireless communication device or the second other wireless communication device, wherein the beamforming feedback frame is based on the sounding frame.
4. The wireless communication device of claim 1 , wherein the processor is further configured to:
receive the beamforming feedback frame from the first other wireless communication device via a first one or more clusters, wherein the first one or more clusters is a first mapping of orthogonal frequency division multiplexing (OFDM) tones within one or more channels among one or more frequency bands; and
transmit the MU beamformed frame to the first other wireless communication device and the second other wireless communication device via a second one or more clusters, wherein the second one or more clusters is a second mapping of OFDM tones within the one or more channels among the one or more frequency bands.
5. The wireless communication device of claim 1 , wherein the processor is further configured to:
generate a sounding frame;
transmit the sounding frame to at least one of the first other wireless communication device or the second other wireless communication device via a first one or more clusters, wherein the first one or more clusters is a first mapping of orthogonal frequency division multiplexing (OFDM) tones within one or more channels among one or more frequency bands; and
receive the beamforming feedback frame from the first other wireless communication device via a second one or more clusters, wherein the second one or more clusters is a second mapping of OFDM tones within the one or more channels among the one or more frequency bands.
6. The wireless communication device of claim 1 , wherein the processor is further configured to:
determine a relationship between one or more clusters and one or more antennae reported in the beamforming feedback frame, wherein the one or more clusters is a mapping of orthogonal frequency division multiplexing (OFDM) tones within one or more channels among one or more frequency bands.
7. The wireless communication device of claim 1 , wherein the processor is further configured to:
transmit, via the communication interface, the MU beamformed frame to the first other wireless communication device and the second other wireless communication device as at least one of a multi-user multiple-input-multiple-output (MU-MIMO) frame or an orthogonal frequency division multiple access (OFDMA) frame.
8. The wireless communication device of claim 1 further comprising:
an access point (AP), wherein at least one of the first other wireless communication device or the second other wireless communication device is a wireless station (STA).
9. A wireless communication device comprising:
a communication interface; and
a processor configured to:
generate a sounding frame;
transmit, via the communication interface, the sounding frame to at least one of a first other wireless communication device or a second other wireless communication device;
receive, via the communication interface, a beamforming feedback frame from the first other wireless communication device, wherein the beamforming feedback frame is based on the sounding frame;
generate a multiple user (MU) beamformed frame, which includes data for both the first other wireless communication device and the second other wireless communication device, based on the beamforming feedback frame and includes no beamforming based on any feedback from the second other wireless communication device; and
transmit, via the communication interface, the MU beamformed frame, which is at least one of a multi-user multiple-input-multiple-output (MU-MIMO) frame or an orthogonal frequency division multiple access (OFDMA) frame, to the first other wireless communication device and the second other wireless communication device.
10. The wireless communication device of claim 9 , wherein the processor is further configured to:
receive another beamforming feedback frame from the second other wireless communication device;
generate another MU beamformed frame, which includes other data for both the first other wireless communication device and the second other wireless communication device, based on the another beamforming feedback frame; and
transmit the another MU beamformed frame to the first other wireless communication device and the second other wireless communication device.
11. The wireless communication device of claim 9 , wherein the processor is further configured to:
receive the beamforming feedback frame from the first other wireless communication device via a first one or more clusters, wherein the first one or more clusters is a first mapping of orthogonal frequency division multiplexing (OFDM) tones within one or more channels among one or more frequency bands; and
transmit the MU beamformed frame to the first other wireless communication device and the second other wireless communication device via a second one or more clusters, wherein the second one or more clusters is a second mapping of OFDM tones within the one or more channels among the one or more frequency bands.
12. The wireless communication device of claim 9 , wherein the processor is further configured to:
transmit the sounding frame to at least one of the first other wireless communication device or the second other wireless communication device via a first one or more clusters, wherein the first one or more clusters is a first mapping of orthogonal frequency division multiplexing (OFDM) tones within one or more channels among one or more frequency bands; and
receive the beamforming feedback frame from the first other wireless communication device via a second one or more clusters, wherein the second one or more clusters is a second mapping of OFDM tones within the one or more channels among the one or more frequency bands.
13. The wireless communication device of claim 9 further comprising:
an access point (AP), wherein at least one of the first other wireless communication device or the second other wireless communication device is a wireless station (STA).
14. A method for execution by a wireless communication device, the method comprising:
receiving, via a communication interface of the wireless communication device, a beamforming feedback frame from a first other wireless communication device;
generating a multiple user (MU) beamformed frame based on information included within the beamforming feedback frame that characterizes a communication pathway between wireless communication device and the first other wireless communication device, wherein the MU beamformed frame includes data for both the first other wireless communication device and a second other wireless communication device and includes no beamforming based on another communication pathway between the wireless communication device and the second other wireless communication device; and
transmitting, via the communication interface of the wireless communication device, the MU beamformed frame to the first other wireless communication device and the second other wireless communication device.
15. The method of claim 14 further comprising:
receiving another beamforming feedback frame from the second other wireless communication device;
generating another MU beamformed frame based on other information included within the another beamforming feedback frame that characterizes another communication pathway between the wireless communication device and the second other wireless communication device, wherein the another MU beamformed frame includes other data for both the first other wireless communication device and the second other wireless communication device; and
transmitting, via the communication interface of the wireless communication device, the another MU beamformed frame to the first other wireless communication device and the second other wireless communication device.
16. The method of claim 14 further comprising:
generating a sounding frame; and
transmitting, via the communication interface of the wireless communication device, the sounding frame to at least one of the first other wireless communication device or the second other wireless communication device, wherein the beamforming feedback frame is based on the sounding frame.
17. The method of claim 14 further comprising:
receiving the beamforming feedback frame from the first other wireless communication device via a first one or more clusters, wherein the first one or more clusters is a first mapping of orthogonal frequency division multiplexing (OFDM) tones within one or more channels among one or more frequency bands; and
transmitting the MU beamformed frame to the first other wireless communication device and the second other wireless communication device via a second one or more clusters, wherein the second one or more clusters is a second mapping of OFDM tones within the one or more channels among the one or more frequency bands.
18. The method of claim 14 further comprising:
generating a sounding frame;
transmitting, via the communication interface of the wireless communication device, the sounding frame to at least one of the first other wireless communication device or the second other wireless communication device via a first one or more clusters, wherein the first one or more clusters is a first mapping of orthogonal frequency division multiplexing (OFDM) tones within one or more channels among one or more frequency bands; and
receiving the beamforming feedback frame from the first other wireless communication device via a second one or more clusters, wherein the second one or more clusters is a second mapping of OFDM tones within the one or more channels among the one or more frequency bands.
19. The method of claim 14 further comprising:
determining a relationship between one or more clusters and one or more antennae reported in the beamforming feedback frame, wherein the one or more clusters is a mapping of orthogonal frequency division multiplexing (OFDM) tones within one or more channels among one or more frequency bands.
20. The method of claim 14 , wherein the wireless communication device is an access point (AP), and at least one of the first other wireless communication device or the second other wireless communication device is a wireless station (STA).