Autonomous dynamic spectrum access

• US 20080112427A1
• Filed: 11/10/2006
• Published: 05/15/2008
• Est. Priority Date: 11/10/2006
• Status: Active Grant

• Current Assignee: Raytheon Company (Rtx Corporation)
• Original Assignee: POWERWAVE COGNITION, INC.
• Inventors: Hershey, Stephen P., Ho, Tin T., Chapman, Kevin L., Brannan, Timothy C., Berezdivin, Roberto, Seidel, Scott Y., Breinig, Robert J., Luethke, Gary A., Young, Darrell L., Livingston, Jay N.
• Granted Patent: US 8,155,127 B2
• Time in Patent Office: Days
• US Class Current: 370/433
• CPC Class Codes: H04W 16/10 Dynamic resource partitioning
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks

Abstract

Communicating between a plurality of nodes includes: at one or more of the plurality of nodes, sensing spectrum activity on at least one channel; creating and maintaining at least one spectrum awareness table based at least in part on the sensed spectrum activity, determining at least one selected bearer based on the at least one spectrum awareness table; performing an adaptive control channel initialization operation to detect zero or more neighbor nodes.

Claims

1. A method for communicating between a plurality of nodes, comprising:

at one or more of the plurality of nodes;

sensing spectrum activity on at least one channel;

creating and maintaining spectrum awareness data based at least in part on the sensed spectrum activity;

determining at least one selected bearer based on the at least one spectrum awareness table;

performing an adaptive control channel initialization operation to detect zero or more neighbor nodes.

3. The method of claim 1, further comprising:

at one or more of the plurality of nodes;

receiving at least a portion of one or more neighbor node'"'"'s neighbor data;

determining a 2-hop neighborhood of nodes.

4. The method of claim 1, further comprising:

at one or more of the plurality of nodes;

receiving at least a portion of at least one neighbor node'"'"'s spectrum awareness data; and

updating the spectrum awareness data to reflect the received at least a portion of the neighbor node'"'"'s spectrum data.

5. The method of claim 1, further comprising:

at one or more of the plurality of nodes;

sending at least a portion of the spectrum awareness data to at least one neighbor node.

6. The method of claim 1, further comprising:

at one or more of the plurality of nodes;

receiving at least a portion of at least one neighbor node'"'"'s spectrum awareness data; and

updating the spectrum awareness data to reflect the received at least a portion of the at least one neighbor node'"'"'s spectrum awareness table.

7. The method of claim 1, where determining at least one selected bearer based on the spectrum awareness data further comprises:

considering at least one policy awareness data to determine the at least one selected bearer.

8. The method of claim 1, further comprising:

at one or more of the plurality of nodes;

determining whether to release the at least one bearer, and if so;

sending a bearer release message; and

switching to a different bearer.

9. The method of claim 8, where the at least one bearer occupies one or more bearer frequencies and where determining whether to release the at least one bearer further comprises:

sensing one or more of the one or more bearer frequencies to detect another user of one or more of the one or more bearer frequencies.

10. The method of claim 8, where determining whether to release the at least one bearer further comprises:

receiving a bearer release message from one or more neighbor nodes.

11. The method of claim 1, the method further comprising:

at each of the plurality of nodes;

autonomously determining which one or more of the plurality of nodes will transmit in a time slot.

2. The method of claim one, further comprising:

if at least one neighbor node is detected;

creating and maintaining neighbor data; and

negotiating with at least one of the neighbor nodes to establish at least one bearer.

12. A wireless node operable to communicate with one or more other mobile nodes, comprising:

an interface operable to;

send and receive signals; and

sense spectrum activity on at least one channel; and

one or more processors, where one of the one or more processors are operable to;

sense spectrum activity on at least one channel;

create and maintain spectrum awareness data based at least in part on the sensed spectrum activity;

determine at least one selected bearer based on the at least one spectrum awareness table;

perform an adaptive control channel initialization operation to detect zero or more neighbor nodes.

13. The wireless node of claim 12, where one or more of the processors are further configured to:

if at least one neighbor node is detected;

create and maintain neighbor data; and

negotiate with at least one of the neighbor nodes to establish at least one bearer.

14. The wireless node of claim 12, where one or more of the processors are further configured to:

receive at least a portion of one or more neighbor node'"'"'s neighbor data;

determine a 2-hop neighborhood of nodes.

15. The wireless node of claim 12, where one or more of the processors are further configured to:

at one or more of the plurality of nodes;

receive at least a portion of at least one neighbor node'"'"'s spectrum awareness data; and

update the spectrum awareness data to reflect the received at least a portion of the neighbor node'"'"'s spectrum data.

16. The wireless node of claim 12, where one or more of the processors are further configured to:

send at least a portion of the spectrum awareness data to at least one neighbor node.

17. The wireless node of claim 12, where one or more of the processors are further configured to:

receive at least a portion of at least one neighbor node'"'"'s spectrum awareness data; and

update the spectrum awareness data to reflect the received at least a portion of the at least one neighbor node'"'"'s spectrum awareness table.

18. The wireless node of claim 12, where one or more of the processors are further configured to:

determine whether to release the at least one bearer, and if so;

send a bearer release message; and

switch to a different bearer.

19. The wireless node of claim 18, where the at least one bearer occupies one or more bearer frequencies and where when determining whether to release the at least one bearer, the processor is further configured to:

sense one or more of the one or more bearer frequencies to detect another user of one or more of the one or more bearer frequencies.

20. The wireless node of claim 18, where when determining whether to release the at least one bearer, the processor is further configured to:

receive a bearer release message from one or more neighbor nodes.

21. A system for communicating between a plurality of nodes, comprising:

means for sensing spectrum activity on at least one channel;

means for creating and maintaining spectrum awareness data based at least in part on the sensed spectrum activity;

means for determining at least one selected bearer based on the at least one spectrum awareness table;

means for performing an adaptive control channel initialization operation to detect zero or more neighbor nodes.