Method and system for frame formats for MIMO channel measurement exchange
View Patent ↗A method and system for frame formats for MIMO channel measurement exchange is provided. Aspects of a method for communicating information in a communication system may comprise transmitting data via a plurality of radio frequency (RF) channels utilizing a plurality of transmitting antenna, receiving feedback information via at least one of a plurality of RF channels, and modifying a transmission mode based on the feedback information. Aspects of a method for communicating information in a communication system may also comprise receiving data via a plurality of receiving antenna, transmitting feedback information via at least one of the plurality of RF channels, and requesting modification of a transmission mode for the received data in transmitted response messages comprising the feedback information.
1. A method operable in a wireless terminal for wireless communication, comprising:
transmitting to another wireless terminal a channel sounding frame;
receiving from the another wireless terminal a channel response frame including feedback information generated in response to the channel sounding frame, wherein the channel response frame includes a type field that includes an indication of one of a plurality of types of feedback information.
2. The method of claim 1 , wherein the feedback information includes one or more feedback matrices and the type field includes an indication of a type of the feedback matrices.
3. The method of claim 2 , wherein the type field includes an indication of at least one of the following types of feedback matrices: channel estimate matrices and beamforming matrices.
4. The method of claim 2 , wherein the feedback information includes one or more channel estimate matrices and the type field includes an indication of channel estimate matrices.
5. The method of claim 2 , wherein the feedback information includes one or more beamforming feedback matrices V and the type field includes an indication of beamforming feedback matrices V.
6. The method of claim 5 , wherein the one or more beamforming feedback matrices V are right singular vector matrices V.
7. The method of claim 1 , wherein the feedback information includes one or more beamforming feedback matrices S and the type field includes an indication of beamforming feedback matrices S.
8. The method of claim 7 , wherein the one or more beamforming feedback matrices S are diagonal matrix of singular values.
9. The method of claim 1 , wherein the channel response frame further includes a row field to indicate a number of rows of the one or more feedback matrices and a column field to indicate a number of columns of the one or more feedback matrices.
10. A mobile terminal, comprising:
at least one processor operable to:
generate a channel sounding frame for transmission to another mobile terminal;
process from the another mobile terminal a channel response frame including feedback information generated in response to the channel sounding frame, wherein the channel response frame includes a type field that includes an indication of one of a plurality of types of feedback information.
11. The mobile terminal of claim 10 , wherein the feedback information includes one or more feedback matrices and the type field includes an indication of a type of the feedback matrices.
12. The mobile terminal of claim 11 , wherein the type field includes an indication of at least one of the following types of feedback matrices: channel estimate matrices and beamforming matrices.
13. The mobile terminal of claim 11 , wherein the feedback information includes one or more channel estimate matrices and the type field includes an indication of channel estimate matrices.
14. The mobile terminal of claim 11 , wherein the feedback information includes one or more beamforming feedback matrices V and the type field includes an indication of beamforming feedback matrices V.
15. The mobile terminal of claim 11 , wherein the feedback information includes one or more beamforming feedback matrices S and the type field includes an indication of beamforming feedback matrices S.
16. The method of claim 11 , wherein the channel response frame further includes a row field to indicate a number of rows of the one or more feedback matrices and a column field to indicate a number of columns of the one or more feedback matrices.
17. A mobile terminal, comprising:
a plurality of antennas; and
at least one processor operable to:
generate a channel sounding packet for transmission to another mobile terminal;
process from the another mobile terminal a channel response packet, wherein the channel response packet includes one or more feedback matrices generated in response to the channel sounding packet and a type field that includes an indication of an indication of one of a plurality of types of feedback matrices.
18. The mobile terminal of claim 17 , wherein the type field includes an indication of at least one of the following types of feedback matrices: channel estimate matrices and beamforming matrices.
19. The mobile terminal of claim 18 , wherein the feedback information includes one or more channel estimate matrices and the type field includes an indication of channel estimate matrices.
20. The mobile terminal of claim 17 , wherein the feedback information includes one or more beamforming feedback matrices and the type field includes an indication of a type of beamforming feedback matrices.