TDD repeater

• US 8,577,283 B2
• Filed: 07/15/2005
• Issued: 11/05/2013
• Est. Priority Date: 07/15/2005
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Dean, Richard Finch, Baker, Kenneth Robert
• Primary Examiner(s): Chen, Junpeng
• Application Number:
  US11/182,231
• Publication Number:
  US 20070015462A1
• Time in Patent Office: 3,035 Days
• Field of Search: 455 7- 25, 455/127.3, 455/144, 455/194.2, 455/253.2, 455/311, 455/341, 4554561-457, 455/11.1, 455/13.1, 455/13.2, 455/553.1, 370/274, 370/279, 370/280, 370/293, 370/294, 370/321, 370/324, 370/226, 370/236, 370/246, 370/315, 370/492, 370/501, 375/211
• US Class Current: 455/10
• CPC Class Codes: H04B 7/15557 Selecting relay station operation mode, e.g. between amplify and forward mode, decode and forward mode or FDD - and TDD mode

Abstract

A repeater that facilitates communication in a wireless environment comprises a scheduling component that analyzes a schedule relating to when communications are active in the forward link direction and when communications are active in the reverse link direction, the communications are subject to time division duplexing. An amplifier that amplifies received communications as a function of the schedule. The repeater can further comprise a configuration component that configures the amplifier to amplify the received communications in one or more of a forward link direction and a reverse link direction.

Claims

1. A method, comprising:

receiving at a repeater a time division duplex communications schedule transmitted by a base station, the time division duplex communications schedule being associated with the base station and a user terminal;

altering the time division duplex communications schedule at the repeater based at least in part on data indicative of an estimated position of the repeater, wherein altering the time division duplex communications schedule comprises

adjusting, as a first function of a location of the repeater with respect to the base station, forward link scheduled times, of the time division duplex communications schedule, relating to when forward communications are active in the forward link direction; and

adjusting, as a second function of a location of the repeater with respect to the user terminal, reverse link scheduled times, of the time division duplex communications schedule, relating to when reverse communications are active in the reverse link direction; and

selectively amplifying one or more communications signals at the repeater in one or more of the forward link direction and the reverse link direction based at least in part on the altered time division duplex communications schedule.

2. The method of claim 1, further comprising:

associating one or more sensors with the repeater to obtain the data indicative of the estimated position of the repeater.

3. The method of claim 1, further comprising:

receiving the one or more communications signals in the forward link direction; and

configuring an amplifier associated with the repeater to amplify the one or more received communications signals in the forward link direction.

4. The method of claim 1, further comprising:

receiving the one or more communications signals in the reverse link direction; and

configuring an amplifier associated with the repeater to amplify the one or more received communications signals in the reverse link direction.

5. The method of claim 1, further comprising:

dedicating an amplifier of the repeater to amplify the one or more communications signals in the forward link direction; and

providing power to the amplifier as a function of the altered time division duplex communications schedule.

6. The method of claim 1, further comprising:

dedicating an amplifier of the repeater to amplify the one or more communications signals in the reverse link direction; and

providing power to the amplifier as a function of the altered time division duplex communications schedule.

7. The method of claim 1, further comprising configuring an amplifier associated with the repeater to intermittently amplify communications in the forward link direction and intermittently amplify communications in the reverse link direction according to the altered time division duplex communications schedule.

8. The method of claim 7, wherein said configuring the amplifier comprises connecting radio-frequency switches in one of the forward link direction and the reverse link direction according to the altered time division duplex communications schedule.

9. The method of claim 1, further comprising:

configuring the repeater at least in part by associating the repeater with functionality similar to that associated with the user terminal, and utilizing the functionality to receive the time division duplex communications schedule.

10. The method of claim 1, further comprising configuring an amplifier to amplify the one or more communications signals according to the altered time division duplex communications schedule.

11. The method of claim 1, wherein said altering the time division duplex communications schedule comprises automatically adjusting the time division duplex communications schedule as a function of the estimated position of the repeater with respect to one or more of the base station and the user terminal.

45. The method of claim 1, further comprising altering the time division duplex communications schedule at the repeater at least in part to compensate for a change of location of the repeater.

12. A repeater apparatus for utilization in a time-division duplex (TDD) wireless environment, comprising:

means for receiving a communications schedule published by a base station, wherein the communications schedule is associated with the base station and a user terminal;

means for altering the communications schedule based at least in part on data indicative of an estimated position of the repeater, the means for altering comprising

means for adjusting, as a first function of a location of the repeater with respect to the base station, forward link scheduled times, of the communications schedule, relating to when forward communications are active in the forward link direction; and

means for adjusting, as a second function of a location of the repeater with respect to the user terminal, reverse link scheduled times, of the communications schedule, relating to when reverse communications are active in the reverse link direction; and

means for amplifying one or more communications signals between the base station and the user terminal based at least in part on the altered communications schedule.

13. The repeater apparatus of claim 12, wherein the user terminal comprises one or more of a cellular telephone, a personal digital assistant, a smart phone, a laptop computer, a desktop computer, or a wristwatch.

14. The repeater apparatus of claim 12, wherein the one or more communications signals comprise a voice signal.

15. The repeater apparatus of claim 12, wherein the one or more communications signals comprise a computer-related data signal.

16. The repeater apparatus of claim 12, wherein the one or more communications signals comprise one or more of a voice signal and one or more of a computer-related data signal.

17. The repeater apparatus of claim 12, further comprising:

means for identifying the communications schedule associated with the base station and the user terminal.

18. The repeater apparatus of claim 17, further comprising:

means for storing the received communications schedule; and

means for analyzing the received communications schedule.

19. The repeater apparatus of claim 12, further comprising:

means for sensing one or more parameters associated with the repeater apparatus; and

means for amplifying the one or more communications signals based at least in part on the sensed one or more parameters.

20. The repeater apparatus of claim 19, wherein the one or more parameters comprise one or more of the estimated position of the repeater apparatus, a velocity associated with the repeater apparatus, an acceleration associated with the repeater apparatus, a direction of travel associated with the repeater apparatus, or an elevation of the repeater apparatus.

21. The repeater apparatus of claim 12, further comprising:

means for configuring a first amplifier to amplify a first plurality of signals in a forward link direction;

means for utilizing the first amplifier to amplify the first plurality of signals in the forward link direction;

means for configuring a second amplifier to amplify a second plurality of signals in a reverse link direction; and

means for utilizing the second amplifier to amplify the second plurality of signals in the reverse link direction.

22. The repeater apparatus of claim 12, further comprising means for configuring an amplifier to amplify a plurality of signals in a forward link direction and a reverse link direction as a function of the altered communications schedule.

23. The repeater apparatus of claim 22, further comprising means for connecting one or more amplifier stages based at least in part on the altered communications schedule.

24. The repeater apparatus of claim 12, further comprising:

means for sensing that a received signal of the one or more communications signals is traveling in one of a forward link direction and a reverse link direction; and

means for amplifying the received signal at least in part as a function of the sensed direction of travel.

25. A repeater to facilitate communication in a wireless communications environment, comprising:

a sensor to sense position-related data associated with the repeater;

a scheduling component to receive a communications schedule published by a base station, wherein the communications schedule is associated with the base station and a user terminal;

a compensation component to alter the received communications schedule based at least in part on the sensed position-related data, the compensation component being configured to

adjust, as a first function of the one or more parameters associated with the repeater as compared to a location of the base station, forward link scheduled times, of the communications schedule, relating to when forward communications are active in the forward link direction; and

adjust, as a second function of the position-related data associated with the repeater as compared to one or more parameters associated with the user terminal, reverse link scheduled times, of the communications schedule, relating to when reverse communications are active in the reverse link direction; and

an amplifier to amplify one or more communications signals in one or more of the forward link direction and the reverse link direction based at least in part on the altered communications schedule.

26. The repeater of claim 25, further comprising an interface component to monitor communications between the base station and the user terminal and to detect transmission of one or more signals indicative of the communications schedule by the base station.

27. The repeater of claim 26, further comprising an antenna to receive the one or more signals indicative of the communications schedule transmitted by the base station.

28. The repeater of claim 25, further comprising a configuration component to configure the amplifier to amplify the one or more communications signals in one or more of the forward link direction and the reverse link direction.

29. The repeater of claim 28, the configuration component to selectively couple a radio-frequency switch to an appropriate amplifier stage based at least in part on the altered communications schedule.

30. The repeater of claim 25, wherein the sensed position-related data includes one or more of an estimated location of the repeater, a velocity of the repeater, a direction of travel of the repeater, an acceleration of the repeater, or an elevation of the repeater.

31. The repeater of claim 25, wherein the sensor comprises a global positioning system sensor to estimate, at least in part, a location of the repeater.

32. The repeater of claim 25, wherein the wireless communications environment comprises one of a time division synchronous code division multiple access environment or a time division code division multiple access environment.

33. The repeater of claim 25, further comprising an antenna to receive one or more signals indicative of the communications schedule published by the base station.

34. The repeater of claim 33, further comprising:

a data store to retain the received one or more signals indicative of the communications schedule; and

a processor to facilitate configuration of the amplifier in accordance with the altered communications schedule.

35. The repeater of claim 25, wherein the repeater comprises a mobile terminal.

36. The repeater of claim 25, wherein the wireless communications environment comprises a time division synchronous code division multiple access environment.

37. A system to facilitate communication in a wireless communications environment, comprising:

a base station to publish a communications schedule associated with the base station and a user terminal in accordance with a time division duplex protocol; and

a repeater to receive the communications schedule, to estimate a location for the repeater, to alter the communications schedule based at least in part on the estimated location, and to amplify one or more communications signals between the base station and the user terminal based at least in part on the altered communications schedule,

wherein the repeater is configured to alter the communications schedule to adjust, as a first function of a location of the repeater with respect to the base station, forward link scheduled times, of the communications schedule, relating to when forward communications are active in a forward link direction, and

wherein the repeater is further configured to alter the communications schedule to adjust, as a second function of a location of the repeater with respect to the user terminal, reverse link scheduled times, of the communications schedule, relating to when reverse communications are active in a reverse link direction.

38. The system of claim 37, wherein the wireless communications environment comprises a time division synchronous code division multiple access environment.

39. The system of claim 37, the base station to further publish a plurality of communications schedules associated with the base station and a respective plurality of user terminals in accordance with the time division duplex protocol, the repeater to receive the plurality of communications schedules, the repeater to alter the plurality of received communications schedules based at least in part on the estimated location of the repeater, and the repeater to amplify communications signals between the base station and the plurality of user terminals in accordance with the plurality of altered communications schedules.

40. An article, comprising:

a computer-readable medium having stored thereon instructions executable by a processor in a repeater to;

recognize one or more signals transmitted by a base station indicative of a communications schedule associated with the base station and a user terminal, the communications schedule compliant or compatible with a time division duplex protocol;

alter the communications schedule based at least in part on data indicative of an estimated location of the repeater at least in part by

adjusting, as a first function of a location of the repeater with respect to the base station, forward link scheduled times, of the communications schedule, relating to when forward communications are active in a forward link direction; and

adjusting, as a second function of a location of the repeater with respect to the user terminal, reverse link scheduled times, of the communications schedule, relating to when reverse communications are active in a reverse link direction; and

configure an amplifier to amplify one or more signals in one or more of the forward link direction and the reverse link direction based at least in part on the altered communications schedule.

41. The article of claim 40, wherein the computer readable medium has stored thereon further instructions executable by the processor to further enable the repeater to connect a radio-frequency switch to an amplifier stage as a function of the altered communications schedule.

42. The article of claim 40, wherein the computer readable medium has stored thereon further instructions executable by the processor to further enable the repeater to selectively provide power to an amplifier at least in part as a function of the altered communications schedule.

43. The article of claim 40, wherein the computer readable medium has stored thereon further instructions executable by the processor to further enable the repeater to:

sense one or more parameters associated with the repeater; and

alter the communications schedule based at least in part on the one or more sensed parameters.

44. A microprocessor in a repeater adapted to:

recognize a communications schedule transmitted by a base station and received at the repeater, wherein the communications schedule is associated with the base station and a user terminal in a time division duplex wireless environment;

alter the communications schedule based at least in part on an estimated position of the repeater, the microprocessor being configured to alter the communications schedule at least in part by

adjusting, as a first function of a location of the repeater with respect to the base station, forward link scheduled times, of the communications schedule, relating to when forward communications are active in a forward link direction; and

adjusting, as a second function of a location of the repeater with respect to the user terminal, reverse link scheduled times, of the communications schedule, relating to when reverse communications are active in a reverse link direction; and

configure an amplifier to amplify one or more signals in one or more of the forward link direction and the reverse link direction based at least in part on the altered communications schedule.