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US 8,787,343 B2Granted
Efficient method for determining a preferred antenna pattern
AssigneeQUALCOMM Incorporated
InventorsMohammad Hossein Taghavi Nasrabadi, Hemanth Sampath, Avinash Jain
Life of this patent
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Abstract
Aspects of the present disclosure propose a method for determining preferred transmit and receive antenna patterns of a wireless device with respect to another wireless device. The method generally includes determining the beamforming or calibrating coefficients corresponding to the preferred transmit and receive antenna patterns of a wireless device iteratively.
Claims35
A first apparatus for determining a preferred transmit antenna pattern for wireless communications, comprising:
- a processing system configured to assign a plurality of combinations of coefficients to one or more transmit antennas of the first apparatus for transmission in a plurality of iterations, wherein a number of nonzero coefficients in each combination is adjusted in each iteration;
- a transmitter configured to transmit, for each iteration, a plurality of reference signals to a second apparatus, wherein each reference signal is transmitted using one of the plurality of combinations of coefficients;
- and
- a receiver configured to receive a message from the second apparatus, wherein the message comprises an indication of a preferred combination of coefficients for the one or more transmit antennas of the first apparatus, wherein the preferred combination of coefficients is determined based on a quality of at least one of a plurality of received reference signals at the second apparatus;
- wherein the processing system is further configured to determine a selected transmit antenna pattern utilizing at least the preferred combination of coefficients.
2 more elements
A method for wireless communications, comprising:
- assigning a plurality of combinations of coefficients to one or more transmit antennas of the first apparatus for transmission in a plurality of iterations, wherein a number of nonzero coefficients in each combination is adjusted in each iteration;
- transmitting, for each iteration, a plurality of reference signals to a second apparatus, wherein each reference signal is transmitted using one of the plurality of combinations of coefficients;
- receiving a message from the second apparatus, wherein the message comprises an indication of a preferred combination of coefficients for the one or more transmit antennas of the first apparatus, wherein the preferred combination of coefficients is determined based on a quality of at least one of a plurality of received reference signals at the second apparatus;
- and
- determining a selected transmit antenna pattern utilizing at least the preferred combination of coefficients.
2 more elements
A first apparatus for wireless communications, comprising:
- means for assigning a plurality of combinations of coefficients to one or more transmit antennas of the first apparatus for transmission in a plurality of iterations, wherein a number of nonzero coefficients in each combination is adjusted in each iteration;
- means for transmitting, for each iteration, a plurality of reference signals to a second apparatus, wherein each reference signal is transmitted using one of the plurality of combinations of coefficients;
- means for receiving a message from the second apparatus, wherein the message comprises an indication of a preferred combination of coefficients for the one or more transmit antennas of the first apparatus, wherein the preferred combination of coefficients is determined based on a quality of at least one of a plurality of received reference signals at the second apparatus;
- and
- means for determining a selected transmit antenna pattern utilizing at least the preferred combination of coefficients.
2 more elements
A computer-program product for determining a preferred transmit antenna pattern, comprising a non-transitory computer-readable medium comprising instructions executable for:
- assigning a plurality of combinations of coefficients to one or more transmit antennas of a first apparatus for transmission in a plurality of iterations, wherein a number of nonzero coefficients in each combination is adjusted in each iteration;
- transmitting, for each iteration, a plurality of reference signals to a second apparatus, wherein each reference signal is transmitted using one of the plurality of combinations of coefficients;
- receiving a message from the second apparatus, wherein the message comprises an indication of a preferred combination of coefficients for the one or more transmit antennas of the first apparatus, wherein the preferred combination of coefficients is determined based on a quality of at least one of a plurality of received reference signals at the second apparatus;
- and
- determining a selected transmit antenna pattern utilizing at least the preferred combination of coefficients.
2 more elements
A station for wireless communications, comprising:
- a plurality of antennas;
- a processing system configured to assign a plurality of combinations of coefficients to one or more transmit antennas of the station for transmission in a plurality of iterations, wherein a number of nonzero coefficients in each combination is adjusted in each iteration;
- a transmitter configured to transmit, for each iteration, a plurality of reference signals to an apparatus, wherein each reference signal is transmitted using one of the plurality of combinations of coefficients;
- and
- a receiver configured to receive a message from the apparatus, wherein the message comprises an indication of a preferred combination of coefficients for the one or more transmit antennas of the station, wherein the preferred combination of coefficients is determined based on a quality of at least one of a plurality of received reference signals at the apparatus;
- wherein the processing system is further configured to determine a selected transmit antenna pattern utilizing at least the preferred combination of coefficients.
3 more elements
Dependencies are inferred from the claim text.