Granted Patent B2

US 8,934,852 · App. 13/841,835 · Granted Jan 13, 2015

Inventors: Hongbo Yan (Vista, CA); Daniel Fred Filipovic (Solana Beach, CA)

Assignee: QUALCOMM Incorporated

H01Q3/24H04W24/02H04B7/0404H04W72/085H04W76/027H04W36/30H04B1/44H04W36/14H04W88/06H04B7/0608H04B7/0814

Abstract

Claims (57)

1. A wireless communications apparatus, comprising:

a plurality of antennas including a first antenna and a second antenna;

a receive or transmit circuit; and

a controller configured to:

determine one or more performance characteristics associated with the first antenna while the receive or transmit circuit is receiving or transmitting wireless communications via the first antenna;

switch the receive or transmit circuit from receiving or transmitting wireless communications via the first antenna to receiving or transmitting wireless communications via the second antenna;

determine one or more performance characteristics associated with the second antenna after the switch;

compare the performance characteristics associated with the first antenna to the performance characteristics associated with the second antenna;

determine whether to maintain the switch of the receive or transmit circuit to the second antenna or to switch the receive or transmit circuit back to the first antenna based on the comparison of the performance characteristics associated with the first antenna to the performance characteristics associated with the second antenna; and

determine a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit based, at least, on the comparison of the performance characteristics associated with the first antenna and the second antenna.

2. The apparatus of claim 1 , wherein the determination of a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit is based, at least, on a dynamic time hysteresis.

3. The apparatus of claim 1 , wherein the determination of a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit is based, at least, on a progressive determination.

4. The apparatus of claim 3 , wherein the determination of a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit is further based, at least, on a dynamic time hysteresis.

5. The apparatus of claim 1 , wherein the determination of a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit can result in at least two different lengths of time.

6. The apparatus of claim 1 , wherein the determination of a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit can result in at least three different lengths of time.

7. The apparatus of claim 1 , wherein the determination of a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit is based, at least, on one or more thresholds.

8. A method of wireless communication comprising:

determining one or more performance characteristics associated with a first antenna while a receive or transmit circuit is receiving or transmitting wireless communications via the first antenna;

switching a receive or transmit circuit from receiving or transmitting wireless communications via the first antenna to receiving or transmitting wireless communications via a second antenna;

determining one or more performance characteristics associated with the second antenna after the switch;

comparing the performance characteristics associated with the first antenna to the performance characteristics associated with the second antenna;

determining whether to maintain the switch of the receive or transmit circuit to the second antenna or to switch the receive or transmit circuit back to the first antenna based on the comparison of the performance characteristics associated with the first antenna to the performance characteristics associated with the second antenna; and

determining a duration of time to maintain a connection between of the first and second antennas and the receive or transmit circuit based, at least, on the comparison of the performance characteristics associated with the first antenna and the second antenna.

9. The method of claim 8 , wherein the determination of a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit is based, at least, on a dynamic time hysteresis.

10. The method of claim 8 , wherein the determination of a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit is based, at least, on a progressive determination.

11. The method of claim 10 , wherein the determination of a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit is further based, at least, on a dynamic time hysteresis.

12. The method of claim 8 , wherein the determination of a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit can result in at least two different lengths of time.

13. The method of claim 8 , wherein the determination of a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit can result in at least three different lengths of time.

14. The method of claim 8 , wherein the determination of a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit is based, at least, on one or more thresholds.

15. A wireless communications apparatus, comprising:

means for receiving or transmitting wireless communications using at least either a first antenna or a second antenna;

means for determining one or more performance characteristics associated with the first antenna;

means for switching the means for receiving or transmitting wireless communications from receiving or transmitting wireless communications via the first antenna to receiving or transmitting wireless communications via the second antenna;

means for determining one or more performance characteristics associated with the second antenna after the switch;

means for comparing one or more performance characteristics associated with the first antenna to one or more performance characteristics associated with the second antenna;

means for determining based at least in part on results obtained from the means for comparing whether to maintain a switch of the means for receiving or transmitting to receiving or transmitting via the second antenna or whether to switch the means for receiving or transmitting back to receiving or transmitting via the first antenna; and

means for determining a duration of time to maintain a connection between one of the first and second antennas and the means for receiving or transmitting based, at least, on the comparison of the performance characteristics associated with the first antenna and the second antenna.

16. The apparatus of claim 15 , wherein the means for determining a duration of time to maintain a connection between one of the first and second antennas and the means for receiving or transmitting is based, at least, on a dynamic time hysteresis.

17. The apparatus of claim 15 , wherein the means for determining a duration of time to maintain a connection between one of the first and second antennas and the means for receiving or transmitting is based, at least, on a progressive determination.

18. The apparatus of claim 17 , wherein the means for determining a duration of time to maintain a connection between one of the first and second antennas and the means for receiving or transmitting is based, at least, on a dynamic time hysteresis.

19. The apparatus of claim 15 , wherein the means for determining a duration of time to maintain a connection between one of the first and second antennas and the means for receiving or transmitting can result in at least two different lengths of time.

20. The apparatus of claim 15 , wherein the means for determining a duration of time to maintain a connection between one of the first and second antennas and the means for receiving or transmitting can result in at least three different lengths of time.

21. The apparatus of claim 15 , wherein the means for determining a duration of time to maintain a connection between one of the first and second antennas and the means for receiving or transmitting is based, at least, on one or more thresholds.

22. A computer program product, comprising:

a non-transitory computer readable storage medium comprising:

code for determining one or more performance characteristics associated with a first antenna while a receive or transmit circuit is receiving or transmitting wireless communications via the first antenna;

code for switching the receive or transmit circuit from receiving or transmitting wireless communications via the first antenna to receiving or transmitting wireless communications via a second antenna;

code for determining one or more performance characteristics associated with the second antenna;

code for comparing one or more performance characteristics associated with the first antenna to one or more performance characteristics associated with the second antenna;

code for determining based at least in part on results obtained from the code for comparing whether to maintain a switch of the receive or transmit circuit to receiving or transmitting via the second antenna or whether to switch the receive or transmit circuit back to receiving or transmitting via the first antenna; and

code for determining a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit based, at least, on the comparison of the performance characteristics associated with the first antenna and the second antenna.

23. The computer program product of claim 22 , wherein the code for determining a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit further bases its determination on, at least, a dynamic time hysteresis.

24. The computer program product of claim 22 , wherein the code for determining a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit further bases its determination on, at least, a progressive determination.

25. The computer program product of claim 24 , wherein the code for determining a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit further bases its determination on, at least, a dynamic time hysteresis.

26. The computer program product of claim 22 , wherein the code for determining a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit can result in at least two different lengths of time.

27. The computer program product of claim 22 , wherein the code for determining a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit can result in at least three different lengths of time.

28. The computer program product of claim 22 , wherein the code for determining a duration of time to maintain a connection between one of the first and second antennas and the receive or transmit circuit further bases its determination on, at least, one or more thresholds.

Assignments (1)

Continuity (9)