Techniques for communicating feedback in wireless communications
AssigneeQUALCOMM Incorporated
InventorsPavan Kumar VITTHALADEVUNI, Yu ZHANG, Joseph Binamira SORIAGA
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Abstract
Aspects of the present disclosure describe receiving, from an access point, an indication of at least one of a beamforming method for beamforming a RS or a normalization method for normalizing power for beamforming the RS. A channel covariance matrix corresponding to interference over a plurality of antenna ports can be generated, as well as a RS beamforming matrix based at least in part on at least one of modifying the channel covariance matrix or on the normalization method. The RS can be generated based on the RS beamforming matrix and the beamforming method. The RS can be transmitted to the access point based on the RS beamforming matrix.
Claims58
A method for transmitting reference signals (RSs) in wireless communications, comprising:
- receiving, from an access point, an indication of at least one of a beamforming method for beamforming a RS or a normalization method for normalizing power for beamforming the RS;
- generating a channel covariance matrix corresponding to interference over a plurality of antenna ports;
- generating a RS beamforming matrix based at least in part on at least one of modifying the channel covariance matrix or on the normalization method;
- generating the RS based on the RS beamforming matrix and the beamforming method;
- and
- transmitting, to the access point, the RS based on the RS beamforming matrix.
A method for configuring reference signals (RSs) transmissions in wireless communications, comprising:
- transmitting, to a user equipment (UE), an indication of at least one of a beamforming method for beamforming an RS or a normalization method for normalizing power for beamforming the RS;
- receiving, from the UE, a RS generated based on a RS beamforming matrix, computed from a channel covariance matrix determined by the UE and the normalization method;
- and
- processing, based on at least one of the beamforming method or the normalization method, the RS received from the UE to determine interference for the UE.
An apparatus for transmitting reference signals (RSs) in wireless communications, comprising:
- means for receiving, from an access point, an indication of at least one of a beamforming method for beamforming a RS or a normalization method for normalizing power for beamforming the RS;
- means for generating a channel covariance matrix corresponding to interference over a plurality of antenna ports;
- means for generating a RS beamforming matrix based at least in part on modifying the channel covariance matrix and on the normalization method;
- means for generating the RS based on the RS beamforming matrix and the beamforming method;
- and
- means for transmitting, to the access point, the RS based on the RS beamforming matrix.
An apparatus for configuring reference signals (RSs) transmissions in wireless communications, comprising:
- means for transmitting, to a user equipment (UE), an indication of at least one of a beamforming method for beamforming an RS or a normalization method for normalizing power for beamforming the RS;
- means for receiving, from the UE, a RS generated based on a RS beamforming matrix, computed from a channel covariance matrix determined by the UE and the normalization method;
- and
- means for processing, based on at least one of the beamforming method or the normalization method, the RS received from the UE to determine interference for the UE.
Dependencies are inferred from the claim text.