Communication terminal and method for selecting a transmission antenna
First Claim
Patent Images
1. A communication terminal comprising:
- a plurality of antennas;
a transceiver configured to receive a message indicating that a first antenna of the plurality of antennas is to be used as a transmission antenna by the communication terminal in accordance with an antenna assignment established via a communication protocol; and
a controller configured to control the transceiver, and to compare a first transmission performance of the first antenna with a second transmission performance of a second antenna of the plurality of antennas according to a predetermined performance measure, and to cause the transceiver to (i) use the first antenna as the transmission antenna in compliance with the antenna assignment established via the communication protocol when the first transmission performance is greater than the second transmission performance, and (ii) override the antenna assignment established via the communication protocol and use the second antenna as the transmission antenna when the second transmission performance is greater than the first transmission performance,wherein the first transmission performance and the second transmission performance are measured in terms of power headroom measurements such that lower power headroom measurements correlate to lower transmission performance.
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Abstract
According to an example, a communication terminal is described including a plurality of antennas, a transceiver configured to receive a message indicating a first antenna of the plurality of antennas that the communication terminal is to use as transmission antenna and a controller configured to determine whether a second antenna of the plurality of antennas has, according to a predetermined performance measure, a higher transmission performance than the first antenna and to control the transceiver to use the second antenna for transmission based on whether it has a higher transmission performance than the first antenna.
46 Citations
20 Claims
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1. A communication terminal comprising:
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a plurality of antennas; a transceiver configured to receive a message indicating that a first antenna of the plurality of antennas is to be used as a transmission antenna by the communication terminal in accordance with an antenna assignment established via a communication protocol; and a controller configured to control the transceiver, and to compare a first transmission performance of the first antenna with a second transmission performance of a second antenna of the plurality of antennas according to a predetermined performance measure, and to cause the transceiver to (i) use the first antenna as the transmission antenna in compliance with the antenna assignment established via the communication protocol when the first transmission performance is greater than the second transmission performance, and (ii) override the antenna assignment established via the communication protocol and use the second antenna as the transmission antenna when the second transmission performance is greater than the first transmission performance, wherein the first transmission performance and the second transmission performance are measured in terms of power headroom measurements such that lower power headroom measurements correlate to lower transmission performance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for selecting a transmission antenna comprising:
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receiving a message indicating that a first antenna of a plurality of antennas is to be used as the transmission antenna in accordance with an antenna assignment established via a communication protocol; comparing a first transmission performance of the first antenna with a second transmission performance of a second antenna of the plurality of antennas according to a predetermined performance measure; and using (i) the first antenna as the transmission antenna in compliance with the antenna assignment established via the communication protocol when the first transmission performance is greater than the second transmission performance, and (ii) the second antenna for transmission by overriding the antenna assignment established via the communication protocol when the second transmission performance is greater than the first transmission performance, wherein the first transmission performance and the second transmission performance are measured in terms of power headroom measurements such that lower power headroom measurements correlate to lower transmission performance. - View Dependent Claims (17, 18)
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19. A non-transitory computer readable medium having recorded instructions thereon which, when executed by a processor, cause the processor to:
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receive a message indicating a first antenna of a plurality of antennas is to be used as the transmission antenna in accordance with an antenna assignment established via a communication protocol; compare a first transmission performance of the first antenna with a second transmission performance of a second antenna of the plurality of antennas according to a predetermined performance measure; and using (i) the first antenna as the transmission antenna in compliance with antenna assignment established via the communication protocol when the first transmission performance is greater than the second transmission performance, and (ii) the second antenna for transmission by overriding the antenna assignment established via the communication protocol when the second transmission performance is greater than the first transmission performance, wherein the first transmission performance and the second transmission performance are measured in terms of power headroom measurements such that lower power headroom measurements correlate to lower transmission performance. - View Dependent Claims (20)
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Specification