Systems and methods of dynamic selection of antennas for power optimization

1. A device comprising:

a first antenna;

a second antenna; and

one or more processors configured to:

determine a first metric according to a first data rate and a first power consumption of communication through the first antenna,

determine a second metric according to a second data rate and a second power consumption of communication through the first antenna and the second antenna, and

select one or more of the first antenna and the second antenna for communication with another device, according to the first metric and the second metric.

2. The device of claim 1 , wherein:

the first metric is determined by dividing the first data rate by the first power consumption, and

the second metric is determined by dividing the second data rate by the second power consumption.

3. The device of claim 1 , wherein the one or more processors are configured to:

compare the first metric and the second metric, and

select the one or more of the first antenna and the second antenna for communication with the another device, to support a higher one of the first metric and the second metric.

4. The device of claim 1 , wherein the one or more processors are configured to:

determine a third metric according to a third data rate and a third power consumption of communication through the second antenna, and

select the one or more of the first antenna and the second antenna for communication with the another device, according to the first metric, the second metric, and the third metric.

5. The device of claim 4 , wherein the one or more processors are configured to:

compare the first metric, the second metric, and the third metric, and

select the one or more of the first antenna and the second antenna for communication with the another device, to support a higher one of the first metric, the second metric, and the third metric.

6. The device of claim 1 , wherein the one or more processors are configured to:

determine a first signal strength of a first signal communicated through the first antenna,

determine a second signal strength of a second signal communicated through the first antenna and the second antenna,

determine the first data rate according to the first signal strength, and

determine the second data rate according to the second signal strength.

7. The device of claim 6 , wherein the one or more processors are configured to:

determine a third signal strength of a third signal received through the second antenna, and

select the first antenna and the second antenna for communication with the another device, in response to the first signal strength and the third signal strength being less than a threshold.

8. The device of claim 7 , wherein the one or more processors are configured to:

determine a third data rate according to the third signal strength,

determine a third metric according to the third data rate and a third power consumption of communication through the second antenna, and

select the second antenna for communication with the another device, in response to i) the third signal strength being larger than the threshold and ii) the third metric being larger than the first metric and the second metric.

9. The device of claim 7 , wherein the one or more processors are configured to:

determine a first received signal strength indicator of the first signal to determine the first signal strength,

determine a second received signal strength indicator of the second signal to determine the second signal strength, and

determine a third received signal strength indicator of the third signal to determine the third signal strength.

10. The device of claim 9 , wherein the one or more processors are configured to:

subtract the second received signal strength indicator by an offset value to prioritize the first antenna over the second antenna.

11. The device of claim 1 , further comprising:

a transceiver; and

a switch configured to selectively couple the one or more of the first antenna and the second antenna to the transceiver, according to an instruction from the one or more processors.

12. The device of claim 1 , further comprising:

a first transceiver; and

a second transceiver,

wherein the one or more processors are configured to enable one or more of the first transceiver and the second transceiver to be coupled to the selected one or more of the first antenna and the second antenna for communication with the another device.

13. A method comprising:

determining, by a device, a first metric according to a first data rate and a first power consumption of communication through a first antenna of the device;

determining, by the device, a second metric according to a second data rate and a second power consumption of communication through the first antenna and a second antenna of the device;

selecting, by the device, one or more of the first antenna and the second antenna for communication with another device, according to the first metric and the second metric; and

communicating, by the device through the one or more of the first antenna and the second antenna.

14. The method of claim 13 , further comprising:

dividing the first data rate by the first power consumption to determine the first metric; and

dividing the second data rate by the second power consumption to determine the second metric.

15. The method of claim 13 , further comprising:

comparing, by the device, the first metric and the second metric,

wherein the one or more of the first antenna and the second antenna for communication with the another device are selected, by the device, to support a higher one of the first metric and the second metric.

16. The method of claim 13 , further comprising:

determining, by the device, a third metric according to a third data rate and a third power consumption of communication through the second antenna; and

comparing, by the device, the first metric, the second metric, and the third metric,

wherein the one or more of the first antenna and the second antenna for communication with the another device are selected, by the device, to support a higher one of the first metric, the second metric, and the third metric.

17. The method of claim 13 , further comprising:

determining, by the device, a first signal strength of a first signal communicated through the first antenna;

determining, by the device, a second signal strength of a second signal communicated through the first antenna and the second antenna;

determining, by the device, the first data rate according to the first signal strength; and

determining, by the device, the second data rate according to the second signal strength.

18. The method of claim 17 , further comprising:

determining, by the device, a third signal strength of a third signal received through the second antenna;

determining, by the device, a third data rate according to the third signal strength;

determining, by the device, a third metric according to the third data rate and a third power consumption of communication through the second antenna;

selecting, by the device, the first antenna and the second antenna for communication with the another device, in response to the first signal strength and the third signal strength being less than a threshold; and

selecting, by the device, the second antenna for communication with the another device, in response to i) the third signal strength being larger than the threshold and ii) the third metric being larger than the first metric and the second metric.

19. A non-transitory computer readable medium storing instructions when executed by one or more processors cause the one or more processors to:

determine a first metric according to a first data rate and a first power consumption of communication through a first antenna of a device,

determine a second metric according to a second data rate and a second power consumption of communication through the first antenna and a second antenna of the device,

select one or more of the first antenna and the second antenna for communication with another device, according to the first metric and the second metric, and

cause a transceiver to communicate through the one or more of the first antenna and the second antenna.

20. The non-transitory computer readable medium of claim 19 , further storing instructions when executed by the one or more processors cause the one or more processors to:

divide the first data rate by the first power consumption to determine the first metric, and

divide the second data rate by the second power consumption to determine the second metric.