Method and apparatus for avoiding wireless audio signal transmission interferences

• US 20050272436A1
• Filed: 02/03/2005
• Published: 12/08/2005
• Est. Priority Date: 08/12/2003
• Status: Active Grant

• Current Assignee: Bose Corporation
• Original Assignee: Bose Corporation
• Inventors: Koetsch, Eric J., Trott, Christian A.
• Granted Patent: US 8,442,019 B2
• Time in Patent Office: Days
• US Class Current: 455/450
• CPC Class Codes: H04B 1/715 Interference-related aspects
• CPC Class Codes: H04B 2001/7154 with means for preventing interference
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

In one aspect, in general, the invention features a method including a second wireless system determining a frequency of active operation of a first wireless system, and communicating wirelessly on the second wireless system in the vicinity of the wireless communication on the first wireless system, the wireless communication utilizing a spread-spectrum technique that excludes the determined frequency.

Claims

1. A method comprising

a second wireless system determining a frequency of active operation of a first wireless system, and

communicating wirelessly on the second wireless system in the vicinity of wireless communication on the first wireless system,

the wireless communication utilizing a spread-spectrum technique that excludes the determined frequency.

2. The method of claim 1 in which the determining is done at a time when transmissions from the first wireless system cannot be detected by the second wireless system.

3. The method of claim 1 in which the determining is done at a time when transmissions from the first wireless system do not impede the functionality of the second wireless system.

4. The method of claim 1 in which the determining is done at a time when transmissions from the second wireless system do not impede the functionality of the first wireless system.

5. The method of claim 1 in which the determining is done at a time when the second system is not transmitting.

6. The method of claim 1 in which the second system comprises a node,

and the determining is done at a time when the node is not transmitting.

7. The method of claim 1 in which the determining comprises receiving from a user information associated with the frequency to be determined.

8. The method of claim 7 in which the information comprises an identification of a communication channel of the first wireless network.

9. The method of claim 7 in which the information is received through a manual user interface.

10. The method of claim 9 in which the manual user interface comprises a button.

11. The method of claim 9 in which the manual user interface comprises a visual indicator.

12. The method of claim 1 in which the determining comprises detecting activity of the first wireless system.

13. The method of claim 1 in which the determining comprises connecting to the first wireless system.

14. The method of claim 13 also including deriving a channel of operation of the first wireless system.

15. The method of claim 1 in which the determining comprises recognizing a signature of the first wireless system.

16. The method of claim 1 further comprising

suspending wireless communication on the second wireless network,

during the suspending, determining a frequency of operation of the first wireless system

17. The method of claim 1 in which the first wireless system comprises an IEEE 802.11 wireless network.

18. A method comprising

maintaining for a second wireless network, information about a frequency in use by a first wireless network,

communicating on the second wireless network using a spread-spectrum technique, and

controlling the spread-spectrum technique to exclude the frequency associated with the maintained information.

19. The method of claim 18 in which the information is updated periodically.

20. The method of claim 18 in which the information is obtained from a user through a user interface.

21. The method of claim 18 in which the information is obtained automatically by observation of the first wireless network.

22. An apparatus comprising

an identifier device to determine information about frequencies in use by a first wireless network,

a transmitter device to transmit using a spread-spectrum technique, and

a controller to cause the transmitter device to avoid the determined frequencies by the second wireless network.

23. The apparatus of claim 22 in which the identifier device comprises a manual user interface.

24. An apparatus comprising

means for determining information about frequencies in use by a first wireless network, and

means for avoiding the determined frequencies by the second wireless network using a spread-spectrum technique.