Method and system for auto coexistence priority selection for a SCO link

• US 9,107,080 B2
• Filed: 04/17/2013
• Issued: 08/11/2015
• Est. Priority Date: 05/24/2006
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Walley, John, Grushkevich, Asif
• Primary Examiner(s): Maung, Nay A
• Assistant Examiner(s): FLEMING-HALL, ERICA L
• Application Number:
  US13/864,416
• Publication Number:
  US 20130225085A1
• Time in Patent Office: 846 Days
• Field of Search: 455 411- 413, 455/561, 455/414.1, 455/414.4, 455/454, 455/462, 455/463, 455/554.1, 455/554.2, 455/552.1, 455/426.1, 455/426.2, 455/448, 455/450, 455/466, 455/560, 455/556.1, 455/90.1, 370/445, 370/449, 370/346, 370/278, 370/326, 370/348, 370328-330, 370/338
• US Class Current: 1/1
• CPC Class Codes: H04L 12/5692 Selection among different networks
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• CPC Class Codes: H04W 72/56 based on priority criteria
• CPC Class Codes: H04W 72/569 of the traffic information
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

Methods and systems for auto coexistence priority selection for a SCO link are disclosed. Aspects of one method may include a first Bluetooth device communicating with a collocated WLAN device via a coexistence method. The first Bluetooth device, prior to executing a non-SCO task, which may comprise tasks that do not involve SCO packet transfer, may communicate low priority via the coexistence method if a Bluetooth SCO link is present between the first Bluetooth device and a second Bluetooth device, and if a current task being handled by the first Bluetooth device is a high priority task. If a SCO link is not present between the first and second Bluetooth devices, and if the current non-SCO task is a high priority task, the first Bluetooth device may communicate high priority via the coexistence method prior to executing the non-SCO task.

Claims

1. A method for wireless communication, the method comprising:

receiving, at a traffic arbitration device, a non-SCO task from a first Bluetooth device co-located with the traffic arbitration device, wherein the non-SCO task is assigned a high priority by the first Bluetooth device;

determining, by the traffic arbitration device, whether a Bluetooth SCO link with a second Bluetooth device is currently present;

reassigning, by the traffic arbitration device, the assigned high priority of the non-SCO task to a low priority when the Bluetooth SCO link is determined to be present;

communicating, by the traffic arbitration device, a first signal corresponding to the reassigned low priority with regard to the non-SCO task via a coexistence method with a co-located WLAN device when the Bluetooth SCO link is determined to be present; and

communicating, by the traffic arbitration device, a second signal corresponding to the assigned high priority with regard to the non-SCO task via the coexistence method with the co-located WLAN device when the Bluetooth SCO link is determined to be not present.

2. The method of claim 1, further comprising:

after communicating the first signal, transitioning priority of the non-SCO task, by the traffic arbitration device, from the low priority to the high priority when the Bluetooth SCO link is determined to no longer be present.

3. The method of claim 1, further comprising:

after communicating the second signal, transitioning priority of the non-SCO task from the high priority to the low priority when the Bluetooth SCO link is determined to now be present.

4. The method of claim 1, further comprising enabling transmission of the co-located WLAN device based at least on the communicated first or second signal of the non-SCO task.

5. The method of claim 1, further comprising executing the non-SCO task.

6. The method of claim 5, wherein the executing of the non-SCO task comprises one or both of transmitting at least one Bluetooth packet in at least one Bluetooth frame or receiving at least one Bluetooth packet in at least one Bluetooth frame.

7. The method of claim 1, wherein the SCO link is one of an HV2 SCO link or an HV3 SCO link.

8. A non-transitory machine-readable storage having stored thereon, a computer program having at least one code section for wireless communication, the at least one code section being executable by a machine for causing the machine to perform:

receiving, at a traffic arbitration device, a non-SCO task from a first Bluetooth device co-located with the traffic arbitration device, wherein the non-SCO task is assigned a high priority by the first Bluetooth device;

determining, by the traffic arbitration device, whether a Bluetooth SCO link with a second Bluetooth device is currently present;

reassigning, by the traffic arbitration device, the assigned high priority of the non-SCO task to a low priority if the Bluetooth SCO link is determined to be present;

communicating, by the traffic arbitration device, a first signal corresponding to the reassigned low priority with regard to the non-SCO task via a coexistence method with a co-located WLAN device if the Bluetooth SCO link is determined to be present; and

communicating, by the traffic arbitration device, a second signal corresponding to the assigned high priority with regard to the non-SCO task via the coexistence method with the co-located WLAN device if the Bluetooth SCO link is determined to be not present.

9. The non-transitory machine-readable storage of claim 8, further causing the machine to, after communicating the first signal, transitioning priority of the non-SCO task, by the traffic arbitration device, from the low priority to the high priority when the Bluetooth SCO link is determined to no longer be present.

10. The non-transitory machine-readable storage of claim 8, further causing the machine to, after communicating the second signal, transitioning priority of the non-SCO task from the high priority to the low priority when the Bluetooth SCO link is determined to now be present.

11. The non-transitory machine-readable storage of claim 8, further causing the machine to enable transmission of the co-located WLAN device based at least on the communicated first or second signal of the non-SCO task.

12. The non-transitory machine-readable storage of claim 8, further causing the machine to perform executing the non-SCO task.

13. The non-transitory machine-readable storage of claim 8, wherein the executing of the non-SCO task comprises one or both of transmitting at least one Bluetooth packet in at least one Bluetooth frame or receiving at least one Bluetooth packet in at least one Bluetooth frame.

14. The non-transitory machine-readable storage of claim 8, wherein the SCO link is one of an HV2 SCO link or an HV3 SCO link.

15. A system for wireless communication, the system comprising:

one or more circuits of a traffic arbitration device operative to receive a non-SCO task from a first Bluetooth device co-located with the traffic arbitration device, wherein the non-SCO task is assigned a high priority by the first Bluetooth device;

one or more circuits of the traffic arbitration device operative to determine whether a Bluetooth SCO link with a second Bluetooth device is currently present;

one or more circuits of the traffic arbitration device operative to reassign the assigned high priority to a low priority if the Bluetooth SCO link is determined to be present;

one or more circuits of the traffic arbitration device operative to communicate a low priority signal corresponding to the reassigned low priority with regard to the non-SCO task via a coexistence method with a co-located WLAN device if the Bluetooth SCO link is determined to be present; and

the one or more circuits of the traffic arbitration device operative to communicate a high priority signal corresponding to the assigned high priority with regard to the non-SCO task via the coexistence method with the co-located WLAN device if the Bluetooth SCO link is determined to be not present.

16. The system of claim 15, further comprising one or more circuits operative to, after communicating the low priority signal, transitioning priority, by the traffic arbitration device, from the low priority to the high priority when the Bluetooth SCO link is determined to no longer be present.

17. The system of claim 15, further comprising one or more circuits operative to, after communicating the high priority signal, transitioning priority from the high priority to the low priority when the Bluetooth SCO link is determined to now be present.

18. The system of claim 15, further comprising one or more circuits operative to enable transmission of the co-located WLAN device based at least on the communicated high or low priority signal of the non-SCO task.

19. The system of claim 15, further comprising one or more circuits operative to execute the non-SCO task.

20. The system according to claim 19, wherein the executing of the non-SCO task comprises one or both of transmitting at least one Bluetooth packet in at least one Bluetooth frame or receiving at least one Bluetooth packet in at least one Bluetooth frame.