Efficient method for determining a preferred antenna pattern
First Claim
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1. 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.
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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.
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Citations
35 Claims
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1. A first apparatus for determining a preferred transmit antenna pattern for wireless communications, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for wireless communications, comprising:
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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. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A first apparatus for wireless communications, comprising:
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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. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A computer-program product for determining a preferred transmit antenna pattern, comprising a non-transitory computer-readable medium comprising instructions executable for:
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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.
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35. A station for wireless communications, comprising:
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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.
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Specification