CHANNEL WIDTH SWITCHING IN MULTIPLE OBSS SYSTEMS

• US 20090168738A1
• Filed: 12/31/2007
• Published: 07/02/2009
• Est. Priority Date: 12/31/2007
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Trainin, Solomon
• Granted Patent: US 8,126,502 B2
• Time in Patent Office: Days
• US Class Current: 370/342
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks

Abstract

Briefly, in accordance with one or more embodiments, a device is capable of operating at a first bandwidth or a second bandwidth, and further capable of operating using a communication method intolerant to operation at the first bandwidth. If operation using a communication method intolerant to operation at the first bandwidth is desired, the device transmits an assertion of intolerance of operation at the first bandwidth to one or more devices on the network to cause the one or more devices on the network to switch operation at the second bandwidth.

Claims

1. A method, comprising:

operating at a first bandwidth in a network of devices capable of operating at the first bandwidth or a second bandwidth; and

transmitting an assertion of intolerance of operation at the first bandwidth to one or more devices on the network if operation using a communication method intolerant to operation at the first bandwidth is desired to cause the one or more devices on the network to switch operation at the second bandwidth.

2. A method as claimed in claim 1, if all channels at the second bandwidth have not been visited, switching to a next channel at the second bandwidth and executing said transmitting in the next channel.

3. A method as claimed in claim 1, further comprising:

communicating with the one or more devices via operation at the second bandwidth while operating using the communication method intolerant to operation at the first bandwidth.

4. A method as claimed in claim 1, further comprising:

communicating with the one or more devices via operation at the second bandwidth until a predefined time has expired, and then allowing the one or more devices to switch back to operation at the first bandwidth.

5. A method as claimed in claim 1, further comprising:

communicating with the one or more devices via operation at the second bandwidth until a predefined time has expired, and if no further intolerance assertions have been transmitted in the predefined time, then allowing the one or more devices to switch back to operation at the first bandwidth, and otherwise extending the predefined time.

6. A method as claimed as claim 1, said intolerance assertion being transmitted via a probe request.

7. A method as claimed in claim 1, wherein operation at the first bandwidth and at the second bandwidth is compliant with an IEEE 802.11n standard, and the communication method intolerant to operation at the first bandwidth is compliant with a BLUETOOTH standard.

8. A device capable of operating at a first bandwidth or a second bandwidth, and further capable of operating using a communication method intolerant to operation at the first bandwidth, comprising:

a baseband processor; and

a radio-frequency transceiver coupled to the baseband processor to communicate with one or more devices in a wireless network;

wherein the baseband processor is configured to;

operate at a first bandwidth in a network of devices capable of operating at the first bandwidth or a second bandwidth; and

transmit an assertion of intolerance of operation at the first bandwidth to one or more devices on the network if operation using a communication method intolerant to operation at the first bandwidth is desired to cause the one or more devices on the network to switch operation at the second bandwidth.

9. A device as claimed in claim 8, wherein the baseband processor is further configured to:

if all channels at the second bandwidth have not been visited, switch to a next channel at the second bandwidth and execute said transmission in the next channel.

10. A device as claimed in claim 8, further comprising:

communicating with the one or more devices via operation at the second bandwidth while operating using the communication method intolerant to operation at the first bandwidth.

11. A device as claimed in claim 8, further comprising:

communicating with the one or more devices via operation at the second bandwidth until a predefined time has expired, and then allowing the one or more devices to switch back to operation at the first bandwidth.

12. A device as claimed in claim 8, further comprising:

communicating with the one or more devices via operation at the second bandwidth until a predefined time has expired, and if no further intolerance assertions have been transmitted in the predefined time, then allowing the one or more devices to switch back to operation at the first bandwidth, and otherwise extending the predefined time.

13. A device as claimed as claim 8, said intolerance assertion being transmitted via a probe request.

14. A device as claimed in claim 8, wherein operation at the first bandwidth and at the second bandwidth is compliant with an IEEE 802.11n standard, and the communication method intolerant to operation at the first bandwidth is compliant with a BLUETOOTH standard.

15. An article of manufacture comprising a storage medium having instructions stored thereon that, if executed, result in:

operating at a first bandwidth in a network of devices capable of operating at the first bandwidth or a second bandwidth; and

transmitting an assertion of intolerance of operation at the first bandwidth to one or more devices on the network if operation using a communication method intolerant to operation at the first bandwidth is desired to cause the one or more devices on the network to switch operation at the second bandwidth.

16. An article of manufacture as claimed in claim 15, wherein the instructions if executed further result in:

if all channels at the second bandwidth have not been visited, switching to a next channel at the second bandwidth and executing said transmitting in the next channel.

17. An article of manufacture as claimed in claim 15, wherein the instructions if executed further result in:

communicating with the one or more devices via operation at the second bandwidth while operating using the communication method intolerant to operation at the first bandwidth.

18. An article of manufacture as claimed in claim 15, wherein the instructions if executed further result in:

communicating with the one or more devices via operation at the second bandwidth until a predefined time has expired, and then allowing the one or more devices to switch back to operation at the first bandwidth.

19. An article of manufacture as claimed in claim 15, wherein the instructions if executed further result in:

communicating with the one or more devices via operation at the second bandwidth until a predefined time has expired, and if no further intolerance assertions have been transmitted in the predefined time, then allowing the one or more devices to switch back to operation at the first bandwidth, and otherwise extending the predefined time.

20. An article of manufacture as claimed in claim 15, the intolerance assertion being transmitted via a probe request.