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

• US 8,442,434 B2
• Filed: 05/24/2006
• Issued: 05/14/2013
• 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: Grushkevich, Asif, Walley, John
• Primary Examiner(s): Maung, Nay A
• Assistant Examiner(s): FLEMING-HALL, ERICA L
• Application Number:
  US11/439,682
• Publication Number:
  US 20070274273A1
• Time in Patent Office: 2,547 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: 455/41.2
• 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:

responsive to (1) a Bluetooth SCO link being present between a first Bluetooth device communicating via a coexistence method with a collocated WLAN device and a second Bluetooth device and (2) a non-SCO task, which does not comprise transfer of an SCO packet, being handled by said first Bluetooth device and being a high priority non-SCO task, communicating a low priority with regard to said non-SCO task via said coexistence method prior to said first Bluetooth device executing said non-SCO task, said communicating of said low priority enabling transmission of said collocated WLAN device within one or more frames not allocated for said Bluetooth SCO link during said Bluetooth SCO link,

wherein a high priority is communicated with regard to said non-SCO task via said coexistence method prior to said first Bluetooth device executing said non-SCO task when said Bluetooth SCO link is not present between said first Bluetooth device and said second Bluetooth device.

2. The method according to claim 1, wherein said executing said non-SCO task comprises one or both of transmitting at least one Bluetooth packet in at least one Bluetooth frame and receiving at least one Bluetooth packet in at least one Bluetooth frame.

3. The method according to claim 1, wherein said first Bluetooth device operates as a master and said second Bluetooth device operates as a slave.

4. The method according to claim 1, wherein said first Bluetooth device operates as a slave and said second Bluetooth device operates as a master.

5. The method according to claim 1, comprising, if said Bluetooth SCO link is not present between said first Bluetooth device and said second Bluetooth device, and if said current non-SCO task being handled by said first Bluetooth device is a high priority task, communicating said high priority via said coexistence method prior to said first Bluetooth device executing said task.

6. The method according to claim 1, wherein said SCO link is an HV2 SCO link.

7. The method according to claim 1, wherein said SCO link is 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 steps comprising:

responsive to (1) a Bluetooth SCO link being present between a first Bluetooth device communicating via a coexistence method with a collocated WLAN device and a second Bluetooth device and (2) a non-SCO task, which does not comprise transfer of an SCO packet, being handled by said first Bluetooth device and being a high priority non-SCO task, communicating a low priority with regard to said non-SCO task via said coexistence method prior to said first Bluetooth device executing said non-SCO task, said communicating of said low priority enabling transmission of said collocated WLAN device within one or more frames not allocated for said Bluetooth SCO link during said Bluetooth SCO link,

wherein a high priority is communicated with regard to said non-SCO task via said coexistence method prior to said first Bluetooth device executing said non-SCO task when said Bluetooth SCO link is not present between said first Bluetooth device and said second Bluetooth device.

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

10. The non-transitory machine-readable storage according to claim 8, wherein said first Bluetooth device operates as a master and said second Bluetooth device operates as a slave.

11. The non-transitory machine-readable storage according to claim 8, wherein said first Bluetooth device operates as a slave and said second Bluetooth device operates as a master.

12. The non-transitory machine-readable storage according to claim 8, wherein said at least one code section comprises code that allows, if said Bluetooth SCO link is not present between said first Bluetooth device and said second Bluetooth device, and if said current non-SCO task being handled by said first Bluetooth device is a high priority task, communicating said high priority via said coexistence method prior to said first Bluetooth device executing said task.

13. The non-transitory machine-readable storage according to claim 8, wherein said SCO link is an HV2 SCO link.

14. The non-transitory machine-readable storage according to claim 8, wherein said SCO link is an HV3 SCO link.

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

handshaking circuitry for a coexistence interface that is operable to enable communication of a low priority with regard to a non-SCO task, with a WLAN device collocated with a first Bluetooth device prior to said first Bluetooth device executing said non-SCO task, said communication of said low priority being responsive to (1) a Bluetooth SCO link being present between said first Bluetooth device and a second Bluetooth device and (2) if said current task being handled by said first Bluetooth device being a high priority non-SCO task, wherein said non-SCO task does not comprise transfer of an SCO packet and wherein said communication of said low priority enables transmission of said collocated WLAN device within one or more frames not allocated for said Bluetooth SCO link during said Bluetooth SCO link; and

wherein said non-SCO task comprises one or both of a Bluetooth page scan and a Bluetooth inquiry scan,

wherein a high priority is communicated with regard to said non-SCO task prior to said first Bluetooth device executing said non-SCO task when said Bluetooth SCO link is not present between said first Bluetooth device and said second Bluetooth device.

16. The system according to claim 15, wherein said executing said non-SCO task comprises one or both of transmitting at least one Bluetooth packet in at least one Bluetooth frame and receiving at least one Bluetooth packet in at least one Bluetooth frame.

17. The system according to claim 15, wherein said first Bluetooth device is operable as a master and said second Bluetooth device is operable as a slave.

18. The system according to claim 15, wherein said first Bluetooth device is operable as a slave and said second Bluetooth device is operable as a master.

19. The system according to claim 15, wherein said handshaking circuitry is operable to enable communication of said high priority via a coexistence interface prior to said first Bluetooth device said executing said task if said Bluetooth SCO link is not present between said first Bluetooth device and said second Bluetooth device, and if said current non-SCO task being handled by said first Bluetooth device is a high priority task.

20. The system according to claim 15, wherein said SCO link is an HV2 SCO link.