Method and system for wireless communication using channel selection and bandwidth reservation

• US 8,699,421 B2
• Filed: 01/15/2008
• Issued: 04/15/2014
• Est. Priority Date: 01/19/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Shao, Huai-Rong, Singh, Harkirat, Qin, Xiangping, Ngo, Chiu
• Primary Examiner(s): Patel, Jay P
• Application Number:
  US12/014,709
• Publication Number:
  US 20080175199A1
• Time in Patent Office: 2,282 Days
• Field of Search: 370/329, 370/343, 370/480
• US Class Current: 370/329
• CPC Class Codes: H04W 28/26 Resource reservation
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A method and system for wireless communication involves communicating via a control channel the channel occupation information with a discovered wireless station, based on the occupation information, selecting a wireless data channel for a new transmission with the discovered station and reserving bandwidth for the new transmission on the data channel simultaneous with one or more ongoing transmissions on the data channel.

Claims

1. A method of wireless communication, comprising:

communicating channel occupation information with a discovered wireless station, wherein discovery between wireless stations is based on scanning a control channel for one or more beacons sent on the control channel from the discovered wireless station;

based on the occupation information selecting a wireless data channel for a new transmission with the discovered station; and

reserving bandwidth for the new transmission on the data channel simultaneous with one or more ongoing transmissions on the data channel based on reserving channel time for simultaneous directional transmissions on the data channel involving the new transmission and the ongoing transmissions that include searching for new beamforming coefficients, while avoiding interference between the new and ongoing transmissions.

2. The method of claim 1 further including initially discovering the discovered wireless station by scanning the control channel to detect beacons initiated by the discovered wireless station.

3. The method of claim 2, wherein communicating channel occupation information includes communicating occupation information over the control channel, wherein the channel occupation information includes channel bandwidth availability information.

4. The method of claim 3, wherein selecting the wireless data channel includes selecting the wireless data channel based on the channel bandwidth information.

5. The method of claim 4, wherein selecting the wireless data channel includes selecting a 60 GHz frequency band communication channel based on the channel bandwidth information.

6. The method of claim 1, wherein avoiding interference between the new and ongoing transmissions on the data channel includes detecting interference from the ongoing directional transmissions on the new transmission.

7. The method of claim 6, wherein avoiding interference between the new and ongoing directional transmissions on the data channel includes detecting interference from the new transmission on the ongoing transmission.

8. The method of claim 7, wherein reserving bandwidth for the new transmission includes reserving channel time for simultaneous directional new and non-interfering ongoing transmissions on the data channel, such that at least a portion of the new transmission temporally overlaps with one or more non-interfering ongoing transmissions.

9. The method of claim 8, wherein reserving channel time further includes leaving sufficient non-overlapping channel time for dynamically redirecting the new and/or ongoing directional transmissions.

32. The method of claim 1, wherein the one or more ongoing transmissions on the data channel comprises:

performing dynamic beamsearching and dynamic beamtracking for beamforming transmission with one or more directional antennas.

33. The method of claim 32, wherein dynamic beamtracking comprises dynamically monitoring quality of beamformed transmission on the data channel, and dynamic beamsearching comprises dynamically searching for new beamforming coefficients for providing desired channel quality.

34. The method of claim 2, wherein the control channel is a default control channel.

35. The method of claim 32, wherein dynamic beamsearching and beamtracking are used for maintaining stable beamforming transmission.

10. A wireless station, comprising:

a processor coupled with;

a communication module configured for communicating channel occupation information with a discovered wireless station and based on the occupation information selecting a wireless data channel for a new transmission with the discovered station, wherein discovery between wireless stations is based on scanning a control channel for one or more beacons sent on the control channel from the discovered wireless station; and

a reservation module configured for reserving bandwidth for the new transmission on the data channel simultaneously with one or more ongoing transmissions on the data channel based on reserving channel time for simultaneous directional transmissions on the data channel involving the new transmission and the ongoing transmissions that include searching for new beamforming coefficients, while avoiding interference between the new and ongoing transmissions.

11. The wireless station of claim 10, wherein the communication module is further configured for initially discovering a wireless station by scanning the control channel to detect beacons initiated by the discovered wireless station.

12. The wireless station of claim 11, wherein the communication module is further configured for communicating channel occupation information over the control channel, wherein the channel occupation information includes channel bandwidth availability information.

13. The wireless station of claim 12, wherein the communication module is further configured for selecting the wireless data channel based on the channel bandwidth information.

14. The wireless station of claim 13, wherein the communication module is further configured for selecting a 60 GHz frequency band data communication channel based on the channel bandwidth information.

15. The wireless station of claim 10, wherein the reservation module is further configured for avoiding interference between the new and ongoing transmissions on the data channel by detecting interference from the ongoing directional transmissions on the new transmission.

16. The wireless station of claim 15, wherein the reservation module is further configured for avoiding interference between the new and ongoing directional transmissions on the data channel by detecting interference from the new transmission on the ongoing transmission.

17. The wireless station of claim 16, wherein the reservation module is further configured for reserving bandwidth for the new transmission by reserving channel time for simultaneous new directional and non-interfering ongoing transmissions on the data channel, such that at least a portion of the new transmission temporally overlaps with one or more non-interfering ongoing transmissions.

18. The wireless station of claim 17, wherein the reservation module is further configured for reserving channel time by leaving sufficient non-overlapping channel time for dynamically redirecting the new and/or ongoing directional transmissions.

19. A method of wireless communication, comprising:

discovering a wireless station via a control channel based on scanning the control channel for one or more beacons sent on the control channel from the wireless station;

communicating channel occupation information with the discovered wireless station via the control channel; and

based on the occupation information, selecting a 60 GHz wireless data channel for a new directional transmission with the discovered station;

detecting interference from the new transmission on one or more ongoing directional transmissions;

detecting interference from one or more ongoing directional transmissions on the new transmission; and

reserving bandwidth for the new directional transmission on the data channel simultaneously with one or more ongoing directional transmissions on the data channel between other stations that include searching for new beamforming coefficients, which avoids interference between the new and ongoing transmissions.

20. The method of claim 19, wherein reserving bandwidth for the new transmission includes reserving channel time for simultaneous new directional and non-interfering ongoing transmissions on the data channel, such that at least a portion of the new transmission temporally overlaps with one or more non-interfering ongoing transmissions.

21. The method of claim 20, wherein reserving channel time includes leaving sufficient non-overlapping channel time for dynamically redirecting the new and/or ongoing directional transmissions.

22. The method of claim 19 further includes providing channel occupation information and interference information in beacons.

23. The method of claim 20, wherein no common beacon period is required.

24. A method of wireless communication, comprising:

discovering a wireless station based on scanning a control channel for one or more beacons sent on the control channel from the wireless station;

communicating channel occupation information with the discovered wireless station via the control channel; and

based on the occupation information, selecting a wireless data channel for a new directional transmission with the discovered station;

detecting interference from the new transmission on one or more ongoing directional transmissions;

detecting interference from one or more ongoing directional transmissions on the new transmission; and

reserving bandwidth for the new directional transmission on the data channel simultaneously with one or more ongoing directional transmissions on the data channel between other stations that include searching for new beamforming coefficients, which avoids interference between the new and ongoing transmissions.

25. The method of claim 24, wherein reserving bandwidth for the new transmission includes reserving channel time for simultaneous new directional and non-interfering ongoing transmissions on the data channel, such that at least a portion of the new transmission temporally overlaps with one or more non-interfering ongoing transmissions.

26. The method of claim 25, wherein reserving channel time includes leaving sufficient non-overlapping channel time for dynamically redirecting the new and/or ongoing directional transmissions.

27. The method of claim 24 further includes providing channel occupation information and interference information in beacons.

28. The method of claim 25, wherein no common beacon period is required.

29. A method of wireless communication, comprising:

based on occupation information of a discovered wireless station, selecting a wireless data channel for a new directional transmission with the discovered station, wherein discovery of the discovered wireless station is based on scanning a control channel for one or more beacons sent on the control channel from the discovered wireless station;

detecting interference from the new transmission on one or more ongoing directional transmissions;

detecting interference from one or more ongoing directional transmissions on the new transmission; and

reserving bandwidth for the new directional transmission on the data channel simultaneously with one or more ongoing directional transmissions on the data channel between other stations that include searching for new beamforming coefficients, which avoids interference between the new and ongoing transmissions.

30. A wireless transmitter, comprising:

a physical layer coupled with;

a communication module configured for communicating channel occupation information with a discovered wireless receiver and based on the occupation information selecting a wireless data channel for a new transmission with the discovered receiver, wherein discovery of the discovered wireless receiver is based on scanning a control channel for beacons sent on the control channel from the discovered wireless receiver; and

a reservation module configured for reserving bandwidth for the new transmission on the data channel simultaneously with one or more ongoing transmissions on the data channel based on reserving channel time for simultaneous directional transmissions on the data channel involving the new transmission and the ongoing transmissions that include searching for new beamforming coefficients, while avoiding interference between the new and ongoing transmissions.

31. A wireless receiver, comprising:

a physical layer coupled with;

a communication module configured for communicating channel occupation information with a discovered wireless transmitter and based on the occupation information selecting a wireless data channel for a new transmission with the discovered transmitter, wherein discovery of the discovered wireless transmitter is based on scanning a control channel for beacons sent on the control channel from the discovered wireless transmitter; and

a reservation module configured for reserving bandwidth for the new transmission on the data channel simultaneously with one or more ongoing transmissions on the data channel based on reserving channel time for simultaneous directional transmissions on the data channel involving the new transmission and the ongoing transmissions that include searching for new beamforming coefficients, while avoiding interference between the new and ongoing transmissions.

36. A method of wireless communication, comprising:

based on occupation information of a discovered wireless station, selecting a wireless data channel for a new directional transmission with the discovered station, wherein discovery of the discovered wireless station is based on scanning a control channel for one or more beacons sent on the control channel from the discovered wireless station;

detecting interference from the new transmission on one or more ongoing directional transmissions; and

detecting interference from one or more ongoing directional transmissions on the new transmission by dynamically monitoring quality of beamformed transmission on the data channel, wherein the one or more ongoing directional transmissions on the new transmission include searching for new beamforming coefficients.

37. The method of claim 36, further comprising reserving bandwidth for the new directional transmission on the data channel simultaneously with one or more ongoing directional transmissions on the data channel between other stations.

38. A wireless station, comprising:

a physical layer coupled with;

a communication module that communicates channel occupation information with a discovered wireless station and based on the occupation information selecting a wireless data channel for a new transmission with the discovered station; and

a reservation module that reserves bandwidth for the new transmission on the data channel simultaneously with one or more ongoing transmissions on the data channel, wherein the one or more ongoing transmissions include searching for new beamforming coefficients.