Systems and methods for communication of channel state information
First Claim
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1. A method of wireless communication, comprising:
- determining one or more parameters based on whether channel state information will be used for a single user protocol or a multi-user protocol;
generating a request for the channel state information, wherein the request comprises a field identifying each of one or more apparatuses and indicating parameters, including the one or more determined parameters, for each of the one or more apparatuses to be used when determining the channel state information, wherein at least one of the parameters comprises a number of columns of a matrix for the channel state information that is requested, and wherein the request comprises a subfield indicating the number;
outputting the request for transmission to the one or more apparatuses; and
obtaining a frame comprising channel state information from at least one of the one or more apparatuses in response to the request, the channel state information having been determined based at least in part on the parameters indicated by the request.
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Abstract
Certain aspects of the present disclosure relate to a technique for communicating Channel State Information (CSI) feedback. In some aspects, the CSI feedback is communicated in a very high throughput (VHT) wireless communications system.
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Citations
18 Claims
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1. A method of wireless communication, comprising:
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determining one or more parameters based on whether channel state information will be used for a single user protocol or a multi-user protocol; generating a request for the channel state information, wherein the request comprises a field identifying each of one or more apparatuses and indicating parameters, including the one or more determined parameters, for each of the one or more apparatuses to be used when determining the channel state information, wherein at least one of the parameters comprises a number of columns of a matrix for the channel state information that is requested, and wherein the request comprises a subfield indicating the number; outputting the request for transmission to the one or more apparatuses; and obtaining a frame comprising channel state information from at least one of the one or more apparatuses in response to the request, the channel state information having been determined based at least in part on the parameters indicated by the request. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for wireless communications, comprising:
a processing system configured to; determine one or more parameters based on whether channel state information will be used for a single user protocol or a multi-user protocol, generate a request for channel state information, wherein the request comprises a field identifying each of one or more apparatuses and indicating parameters, including the one or more determined parameters, for each of the one or more apparatuses to be used when determining the channel state information, wherein at least one of the parameters comprises a number of columns of a matrix for the channel state information that is requested, and wherein the request comprises a subfield indicating the number, output the request for transmission to the one or more apparatuses; and obtain a frame comprising channel state information from at least one of the one or more apparatuses in response to the request, the channel state information having been determined based at least in part on the parameters indicated by the request. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A non-transitory computer readable medium comprising instructions that when executed cause an apparatus to:
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determine one or more parameters based on whether channel state information will be used for a single user protocol or a multi-user protocol; generate a request for channel state information, wherein the request comprises a field identifying each of one or more apparatuses and indicating parameters, including the one or more determined parameters, for each of the one or more apparatuses to be used when determining the channel state information, wherein at least one of the parameters comprises a number of columns of a matrix for the channel state information that is requested, and wherein the request comprises a subfield indicating the number; output the request for transmission to the one or more apparatuses; and obtain a frame comprising channel state information from at least one of the one or more apparatuses in response to the request, the channel state information having been determined based at least in part on the parameters indicated by the request.
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18. An access point, comprising:
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a processing system configured to; determine one or more parameters based on whether channel state information will be used for a single user protocol or a multi-user protocol, and generate a request for channel state information, wherein the request comprises a field identifying each of one or more apparatuses and indicating parameters, including the one or more determined parameters, for each of the one or more apparatuses to be used when determining the channel state information, wherein at least one of the parameters comprises a number of columns of a matrix for the channel state information that is requested, and wherein the request comprises a subfield indicating the number; a transmitter configured to transmit the request to the one or more apparatuses, and a receiver configured to receive a frame comprising channel state information from at least one of the one or more apparatuses in response to the request, the channel state information having been determined based at least in part on the parameters indicated by the request.
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Specification