Method and apparatus of connectivity recovery in a wireless network

• US 8,594,052 B2
• Filed: 07/08/2011
• Issued: 11/26/2013
• Est. Priority Date: 03/11/2008
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Li, Guoqing, Cordeiro, Carlos, Gopalakrishnan, Praveen
• Primary Examiner(s): Yao, Kwang B
• Assistant Examiner(s): DUDA, ADAM K
• Application Number:
  US13/178,777
• Publication Number:
  US 20110261684A1
• Time in Patent Office: 872 Days
• Field of Search: 370/334, 370/400, 370/290, 370/431, 370/901, 370/908, 370/329, 455/562.1, 455/101, 455/458, 455/91
• US Class Current: 370/334
• CPC Class Codes: H01Q 3/26 varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture H01Q3/12, H01Q3/22, H01Q3/24 take precedence
• CPC Class Codes: H04B 7/0682 using phase diversity (e.g. phase sweeping)

Abstract

A wireless communication device and a method of operating an antenna training process to discover first and second communication paths between at least two stations, to rank according to a quality criterion transmitting and receiving modes of an antenna, to report best transmitting mode and best receiving mode for transmitting and receiving signals over said first and second communication paths and to establish a communication link on a selected communication path based on the quality of the transmitting mode and said receiving mode.

Claims

1. A method of communication in a wireless millimeter personal area network, the method comprising:

performing an antenna training process, the antenna training process corresponding to first and second communication paths with a remote station, wherein the first communication path is a direct communication path with the remote station and the second communication path is an indirect communication path with the remote station;

communicating with the remote station across the first communication path; and

when the first communication path becomes disrupted or broken, ceasing communications with the remote station across the first communication path and communicating with the remote station across the second communication path.

2. The method of claim 1 comprising ranking the first and second communication paths according to a quality criterion.

3. The method of claim 1 comprising testing at least one of the first and second communication paths.

4. The method of claim 1, wherein the first communication path is a direct millimeter wave communication path with the remote station and the second communication path is an indirect millimeter wave path with the remote station.

5. The method of claim 1, wherein said communicating with the remote station across the first communication path comprises sending one or more millimeter wave directional transmissions within a superframe.

6. The method of claim 5, wherein the one or more millimeter wave directional transmissions occur in one or more reserved portions of the superframe.

7. The method of claim 5, wherein the one or more millimeter wave directional transmissions occur in one or more contention access portions of the superframe.

8. The method of claim 1, wherein said communicating with the remote station across the second communication path comprises sending one or more millimeter wave directional transmissions within a superframe.

9. The method of claim 8, wherein the one or more millimeter wave directional transmissions occur in one or more reserved portions of the superframe.

10. The method of claim 8, wherein the one or more millimeter wave directional transmissions occur in one or more contention access portions of the superframe.

11. The method of claim 1 comprising determining the first communication path is disrupted or broken based on one or more missed acknowledgments (ACKs).

12. The method of claim 1 comprising determining the first communication path is disrupted or broken based on a quality criterion.

13. A wireless communication device comprising:

a controller to perform an antenna training process, the antenna training process corresponding to first and second communication paths with a remote station;

one or more antennas to communicate with the remote station across the first communication path, the one or more antennas to, when the first communication path becomes disrupted or broken, cease communicating with the remote station across the first communication path and to communicate with the remote station across the second communication path,

wherein the first communication path is a direct communication path with the remote station, and the second communication path is an indirect communication path with the remote station.

14. The wireless communication device of claim 13, wherein the controller is to test at least one of said first and second communication paths.

15. The wireless communication device of claim 13, wherein the first communication path is a direct millimeter wave communication path with the remote station and second communication path is a indirect millimeter wave path with the remote station.

16. The wireless communication device of claim 13, wherein the one or more antennas include an adaptive beamforming antenna.

17. The wireless communication device of claim 13, wherein the wireless communication device is included in a station of a wireless personal area network (WPAN).

18. The wireless communication device of claim 13, wherein the first and second communication paths are in a wireless personal area network (WPAN).

19. The wireless communication device of claim 13, wherein the controller is to determine the first communication path is disrupted or broken based on one or more missed acknowledgments (ACKs).

20. The wireless communication device of claim 13, wherein the controller to determine the first communication path is disrupted or broken based on a quality criterion.

21. The wireless communication device of claim 13, wherein said communicating with the remote station across the first communication path comprises sending one or more millimeter wave directional transmission within a superframe.

22. The wireless communication device of claim 13, wherein said communicating with the remote station across the second communication path comprises sending, one or more millimeter wave directional transmissions within a superframe.

23. An apparatus comprising:

a controller to perform an antenna training process, the antenna training process corresponding to first and second communication paths with a remote device,

said controller is to control one or more antennas to communicate with the remote device across the first communication path and, when the first communication path becomes disrupted or broken, to cease communicating with the remote device across the first communication path and to communicate with the remote device across the second communication path,

wherein the first communication path is a direct communication path with the remote device, and the second communication path is an indirect communication path with the remote device.

24. The apparatus of claim 23, wherein the controller is to test at least on of the first and second communication paths.

25. The apparatus of claim 23, wherein the first communication path is a direct millimeter wave communication path with the remote device and the second communication path is an indirect millimeter wave path with the remote device.

26. The apparatus of claim 23, wherein the first and second communications paths are in a wireless personal area network (WPAN).

27. The apparatus of claim 23, wherein the controller is to determine the first communication path is disrupted or broken based on one or more missed acknowledgments (ACKs).

28. The apparatus of claim 23, wherein the controller is to determine the first communication path is disrupted or broken based on a quality criterion.

29. The apparatus of claim 23, wherein said communicating with the remote device across the first communication path comprises sending one or more millimeter wave directional transmissions within a superframe.

30. The apparatus of claim 23, wherein said communicating with the remote device across the second communication path comprises sending one or more millimeter wave directional transmissions within a superframe.