Systems and methods providing mobile transmit diversity

• US 8,654,715 B2
• Filed: 10/20/2009
• Issued: 02/18/2014
• Est. Priority Date: 10/24/2008
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Wang, Jibing, Attar, Rashid Ahmed Akbar, Kadous, Tamer
• Primary Examiner(s): LIN, KENNY S
• Application Number:
  US12/582,514
• Publication Number:
  US 20100103877A1
• Time in Patent Office: 1,582 Days
• Field of Search: 370/329
• US Class Current: 370/329
• CPC Class Codes: H04B 7/061 using feedback from receiving side
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0689 using different transmission schemes, at least one of them being a diversity transmission scheme
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/247 where the output power of a terminal is based on a path parameter sent by another terminal
• CPC Class Codes: H04W 52/248 where transmission power control commands are generated based on a path parameter

Abstract

A method for use by a remote unit in an Evolution Data Optimized (EVDO) network includes sending transmissions to a base station, each of the transmissions corresponding to a respective one of multiple hypotheses of multiple antenna usage. The method also includes receiving feedback from the base station in response to the transmissions, the feedback being uninformed of multiple antenna usage and using the feedback to select at least one of the hypotheses. The method further includes transmitting data using a multiple-antenna scheme associated with the selected hypotheses.

Claims

1. A method for use by a remote unit in an Evolution Data Optimized (EVDO) network, the method comprising:

transmitting a plurality of transmissions to a base station from a single wireless device, each of the transmissions corresponding to a respective one of a plurality of hypotheses of multiple antenna usage for the single wireless device;

receiving feedback from the base station in response to the plurality of transmissions, the feedback being uninformed of multiple antenna usage;

using the feedback to select at least one of the hypotheses; and

transmitting data using a multiple-antenna scheme associated with the selected at least one of the hypotheses.

2. The method of claim 1, wherein the feedback comprises power control feedback.

3. The method of claim 1, wherein receiving feedback comprises:

receiving power control signals indicating whether at least one of the plurality of transmissions should be increased in power.

4. The method of claim 3, wherein using the feedback comprises:

eliminating at least one of the plurality of hypotheses in response to the received power control signals.

5. The method of claim 1, wherein the plurality of transmissions are sent to the base station during a first period, and wherein the data is transmitted during a second period following the first period.

6. The method of claim 1, wherein the plurality of hypotheses correspond to at least one of:

antenna selection; and

beamforming.

7. The method of claim 1, wherein the feedback comprises indications of correct and incorrect decoding at the base station, and wherein using the feedback to select at least one of the hypotheses comprises:

eliminating at least one of the hypotheses in response to receiving indications of incorrect decoding.

8. The method of claim 1 further comprising:

discerning a degree of mobility of the remote unit; and

switching to a single-antenna scheme in response to discerning the degree of mobility.

9. The method of claim 8, wherein discerning the degree of mobility comprises:

receiving a Doppler input indicating the degree of mobility.

10. The method of claim 1 performed by at least one of a cell phone, a hand-held personal communication systems (PCS) unit, a personal data assistant (PDA), a fixed location data unit, a laptop computer, and a desktop computer.

11. An Evolution Data Optimized (EVDO)-enabled remote unit, the remote unit comprising:

means for transmitting a plurality of transmissions to a base station from a single wireless device, each of the transmissions corresponding to a respective one of a plurality of hypotheses of multiple antenna usage for the single wireless device;

means for receiving feedback from the base station in response to the plurality of transmissions, the feedback being independent of any of the hypotheses;

means for using the feedback to select at least one of the hypotheses; and

means for transmitting data using a multiple-antenna scheme associated with the selected at least one of the hypotheses.

12. The remote unit of claim 11, wherein the feedback comprises power control feedback.

13. The remote unit of claim 11, wherein the plurality of hypotheses correspond to at least one of:

antenna selection; and

beamforming.

14. The remote unit of claim 11, wherein the feedback comprises indications of correct and incorrect decoding at the base station.

15. The remote unit of claim 11 comprising at least one of a cell phone, a hand-held personal communication systems (PCS) unit, a personal data assistant (PDA), a fixed location data unit, a laptop computer, and a desktop computer.

16. A computer program product for wireless communication in a wireless network, the computer program product comprising:

a non-transitory computer-readable medium having non-transitory program code recorded thereon, the program code comprising;

program code to transmit a plurality of transmissions to a base station from a single wireless device, each of the transmissions corresponding to a respective one of a plurality of hypotheses of multiple antenna usage for the single wireless device;

program code to receive feedback from the base station in response to the plurality of transmissions, the feedback not addressing multiple antenna usage;

program code to select, based at least in part on the feedback, at least one of the hypotheses; and

program code to transmit data using a multiple-antenna scheme associated with the selected at least one of the hypotheses.

17. The computer program product of claim 16, wherein the feedback comprises power control feedback.

18. The computer program product of claim 16, wherein the program code to receive feedback comprises:

program code to receive power control signals indicating whether at least one of the plurality of transmissions should be increased in power.

19. The computer program product of claim 16, wherein the feedback comprises indications of correct and incorrect decoding at the base station, and wherein the program code to select at least one of the hypotheses comprises:

program code to eliminate at least one of the hypotheses in response to receiving indications of incorrect decoding.

20. The computer program product of claim 16 further comprising:

program code to discern a degree of mobility of the remote unit by receiving a Doppler input; and

program code to switch to a single-antenna scheme in response to discerning the degree of mobility.