Method and system for achieving enhanced quality and higher throughput for collocated IEEE 802.11 B/G and bluetooth devices in coexistent operation
View Patent ↗A method and system for achieving enhanced quality and higher throughput for collocated IEEE 802.11b/g and Bluetooth (BT) devices in coexistent operation are provided. A priority signal may be generated by a BT radio in a coexistence station to disable WLAN transmissions in a WLAN radio when a BT HV3 frame is available for transmission. When the priority signal is asserted, an exponentially growing retransmission backoff mechanism in the WLAN radio may be disabled. Moreover, when the BT radio and the WLAN radio are enabled for coexistence operation, a WLAN fragmentation threshold in the WLAN radio may be modified based on a WLAN modulation rate and the BT HV3 frame duration.
1. A method for providing wireless communication, the method comprising:
in a station that handles at least a Bluetooth (BT) communication protocol and a Wireless Local Area Network (WLAN) communication protocol:
asserting a BT priority signal for enabling transmission of Bluetooth protocol data, said asserting occurring within a guard time prior to said Bluetooth protocol data being transmitted;
adjusting WLAN transmission capabilities based on said asserted BT priority signal, wherein said adjusting comprises reducing a transmit power of said WLAN transmission capabilities;
storing status information of a WLAN packet scheduled to be transmitted during said guard time, said status information indicating whether transmission of said WLAN packet occurred before the end of said guard time; and
transmitting said Bluetooth protocol data subsequent to said adjusting of said WLAN transmission capabilities.
2. The method according to claim 1 , comprising deasserting said BT priority signal subsequent to completion of said transmission of said Bluetooth protocol data.
3. The method according to claim 2 , comprising reducing said transmit power of said WLAN transmission capabilities concurrently with a reduction in a transmit power corresponding to said transmitting of Bluetooth protocol data.
4. The method according to claim 1 , comprising disabling retransmission backoff in said WLAN communication protocol subsequent to said assertion of said BT priority signal.
5. The method according to claim 1 , comprising resuming WLAN transmission based on said stored status information.
6. The method according to claim 1 , wherein said stored status information comprises a scheduled next transmission attempt during a next available WLAN transmission window for a WLAN packet transmission terminated before completion.
7. A system for providing wireless communication, the system comprising:
a station that comprises a Bluetooth (BT) radio that handles a BT communication protocol and a Wireless Local Area Network (WLAN) radio that handles a WLAN communication protocol, wherein:
said BT radio is operable to assert a BT priority signal for enabling transmission of Bluetooth protocol data, said assertion occurring within a guard time prior to said Bluetooth protocol data being transmitted;
said WLAN radio is operable to adjust WLAN transmission capabilities based on said asserted BT priority signal, wherein said adjustment comprises reducing a transmit power of said WLAN transmission capabilities;
said WLAN radio is operable to store status information of a WLAN packet scheduled to be transmitted during said guard time, said status information indicating whether transmission of said WLAN packet occurred before the end of said guard time;
said BT radio is operable to transmit said Bluetooth protocol data subsequent to said adjustment of said WLAN transmission capabilities.
8. The system according to claim 7 , wherein said BT radio is operable to deassert said BT priority signal subsequent to completion of said transmission of said Bluetooth protocol data.
9. The system according to claim 8 , wherein said WLAN radio is operable to reduce said transmit power of said WLAN transmission capabilities concurrently with a reduction in a transmit power corresponding to said transmitting of Bluetooth protocol data.
10. The system according to claim 7 , wherein said WLAN radio is operable to disable retransmission backoff in said WLAN communication protocol subsequent to said assertion of said BT priority signal.
11. The system according to claim 7 , wherein said BT radio is operable to resume said WLAN transmission based on said stored status information.
12. The system according to claim 7 , wherein said stored status information comprises a scheduled next transmission attempt during a next available WLAN transmission window for a WLAN packet transmission terminated before completion.
13. A non-transitory machine-readable storage having stored thereon, a computer program having at least one code section for providing wireless communication, the at least one code section being executable by a machine for causing the machine to perform steps comprising:
in a station that handles at least a Bluetooth (BT) communication protocol and a Wireless Local Area Network (WLAN) communication protocol:
asserting a BT priority signal for enabling transmission of Bluetooth protocol data, said asserting occurring within a guard time prior to said Bluetooth protocol data being transmitted;
adjusting WLAN transmission capabilities based on said asserted BT priority signal, wherein said adjusting comprises reducing a transmit power of said WLAN transmission capabilities;
storing status information of a WLAN packet scheduled to be transmitted during said guard time, said status information indicating whether transmission of said WLAN packet occurred before the end of said guard time;
transmitting said Bluetooth protocol data subsequent to said adjusting of said WLAN transmission capabilities.
14. The non-transitory machine-readable storage according to claim 13 , wherein said at least one code section comprises code for deasserting said BT priority signal subsequent to completion of said transmission of said Bluetooth protocol data.
15. The non-transitory machine-readable storage according to claim 14 , wherein said at least one code section comprises code for reducing said transmit power of said WLAN transmission capabilities concurrently with a reduction in a transmit power corresponding to said transmitting of Bluetooth protocol data.
16. The non-transitory machine-readable storage according to claim 13 , wherein said at least one code section comprises code for disabling retransmission backoff in said WLAN communication protocol subsequent to said assertion of said BT priority signal.
17. The non-transitory machine-readable storage according to claim 13 , wherein said at least one code section comprises code for resuming WLAN transmission based on said stored status information.
18. The non-transitory machine-readable storage according to claim 13 , wherein said stored status information comprises a scheduled next transmission attempt during a next available WLAN transmission window for a WLAN packet transmission terminated before completion.
19. A system for providing wireless communication, the system comprising:
one or more circuits for use in a station, said one or more circuits operable to handle a Bluetooth (BT) communication protocol and a Wireless Local Area Network (WLAN) communication protocol, wherein:
said one or more circuits are operable to assert a BT priority signal for enabling transmission of Bluetooth protocol data, said assertion occurring within a guard time prior to said Bluetooth protocol data being transmitted;
said one or more circuits are operable to adjust WLAN transmission capabilities based on said asserted BT priority signal, wherein said adjustment comprises reducing a transmit power of said WLAN transmission capabilities;
said one or more circuits are operable to store status information of a WLAN packet scheduled to be transmitted during said guard time, said status information indicating whether transmission of said WLAN packet occurred before the end of said guard time;
said one or more circuits are operable to transmit said Bluetooth protocol data subsequent to said adjustment of said WLAN transmission capabilities.
20. The system according to claim 19 , wherein said one or more circuits are operable to deassert said BT priority signal subsequent to completion of said transmission of said Bluetooth protocol data.
21. The system according to claim 20 , wherein said one or more circuits are operable to reduce said transmit power of said WLAN transmission capabilities concurrently with a reduction in a transmit power corresponding to said transmitting of Bluetooth protocol data.
22. The system according to claim 19 , wherein said one or more circuits are operable to disable retransmission backoff in said WLAN communication protocol subsequent to said assertion of said BT priority signal.
23. The system according to claim 19 , wherein said one or more circuits are operable to resume said WLAN transmission based on said stored status information.
24. The system according to claim 19 , wherein said stored status information comprises a scheduled next transmission attempt during a next available WLAN transmission window for a WLAN packet transmission terminated before completion.
25. A method for providing wireless communication, the method comprising:
in a station that handles at least a Bluetooth (BT) communication protocol and a Wireless Local Area Network (WLAN) communication protocol:
asserting a BT priority signal for enabling transmission of Bluetooth protocol data, said asserting occurring within a guard time prior to said Bluetooth protocol data being transmitted;
adjusting WLAN transmission capabilities based on said asserted BT priority signal, wherein said adjusting comprises reducing a transmit power of said WLAN transmission capabilities;
storing status information of a WLAN packet scheduled to be transmitted during said guard time, said status information indicating whether transmission of said WLAN packet occurred before the end of said guard time;
transmitting said Bluetooth protocol data subsequent to said adjusting of said WLAN transmission capabilities; and
disabling a retransmission backoff in said WLAN communication protocol subsequent to said assertion of said BT priority signal.
26. The method according to claim 25 , wherein said retransmission backoff grows exponentially.
27. The method according to claim 25 , comprising deasserting said BT priority signal subsequent to completion of said transmission of said Bluetooth protocol data.
28. The method according to claim 25 , comprising reducing said transmit power of said WLAN transmission capabilities concurrently with a reduction in a transmit power corresponding to said transmitting of Bluetooth protocol data.
29. The method according to claim 25 , comprising turning OFF a power amplifier subsequent to said adjusting of said WLAN transmission capabilities.
30. The method according to claim 25 , comprising resuming WLAN transmission based on said stored status information.
31. A system for providing wireless communication, the system comprising:
a station that comprises a Bluetooth (BT) radio that handles a BT communication protocol and a Wireless Local Area Network (WLAN) radio that handles a WLAN communication protocol, wherein:
said BT radio is operable to assert a BT priority signal for enabling transmission of Bluetooth protocol data, said assertion occurring within a guard time prior to said Bluetooth protocol data being transmitted;
said WLAN radio is operable to adjust WLAN transmission capabilities based on said asserted BT priority signal, wherein said adjustment comprises reducing a transmit power of said WLAN transmission capabilities;
said WLAN radio is operable to store status information of a WLAN packet scheduled to be transmitted during said guard time, said status information indicating whether transmission of said WLAN packet occurred before the end of said guard time;
said BT radio is operable to transmit said Bluetooth protocol data subsequent to said adjustment of said WLAN transmission capabilities; and
said BT radio is operable to disable a retransmission backoff in said WLAN communication protocol subsequent to said assertion of said BT priority signal.
32. The system according to claim 31 , wherein said retransmission backoff grows exponentially.
33. The system according to claim 31 , wherein said BT radio is operable to deassert said BT priority signal subsequent to completion of said transmission of said Bluetooth protocol data.
34. The system according to claim 33 , wherein said WLAN radio is operable to reduce said transmit power of said WLAN transmission capabilities concurrently with a reduction in a transmit power corresponding to said transmitting of Bluetooth protocol data.
35. The system according to claim 31 , wherein said BT radio is operable to turn OFF a power amplifier subsequent to said adjustment of said WLAN transmission capabilities.
36. The system according to claim 31 , wherein said BT radio is operable to resume said WLAN transmission based on said stored status information.
37. A non-transitory machine-readable storage having stored thereon, a computer program having at least one code section for providing wireless communication, the at least one code section being executable by a machine for causing the machine to perform steps comprising:
in a station that handles at least a Bluetooth (BT) communication protocol and Wireless Local Area Network (WLAN) communication protocol:
asserting a BT priority signal for enabling transmission of Bluetooth protocol data, said asserting occurring within a guard time prior to said Bluetooth protocol data being transmitted;
adjusting WLAN transmission capabilities based on said asserted BT priority signal, wherein the adjusting comprises reducing a transmit power of said WLAN transmission capabilities;
storing status information of a WLAN packet scheduled to be transmitted during said guard time, said status information indicating whether transmission of said WLAN packet occurred before the end of said guard time;
transmitting said Bluetooth protocol data subsequent to said adjusting of said WLAN transmission capabilities; and
disabling a retransmission backoff in said WLAN communication protocol subsequent to said assertion of said BT priority signal.
38. The non-transitory machine-readable storage according to claim 37 , wherein said retransmission backoffgrows exponentially.
39. The non-transitory machine-readable storage according to claim 37 , wherein said at least one code section comprises code for deasserting said BT priority signal subsequent to completion of said transmission of said Bluetooth protocol data.
40. The non-transitory machine-readable storage according to claim 39 , wherein said at least one code section comprises code for reducing said transmit power of said WLAN transmission concurrently with a reduction of a transmit power corresponding to said transmitting of Bluetooth protocol data.
41. The non-transitory machine-readable storage according to claim 37 , wherein said at least one code section comprises code for turning OFF a power amplifier subsequent to said adjusting of said WLAN transmission capabilities.
42. The non-transitory machine-readable storage according to claim 37 , wherein said at least one code section comprises code for resuming WLAN transmission based on said stored status information.
43. A system for providing wireless communication, the system comprising:
one or more circuits for use in a station, said one or more circuits operable to handle a Bluetooth (BT) communication protocol and a Wireless Local Area Network (WLAN) communication protocol, wherein:
said one or more circuits are operable to assert a BT priority signal for enabling transmission of Bluetooth protocol data, said assertion occurring within a guard time prior to said Bluetooth protocol data being transmitted;
said one or more circuits are operable to adjust WLAN transmission capabilities based on said asserted BT priority signal, wherein said adjustment comprises reducing a transmit power of said WLAN transmission capabilities;
said one or more circuits are operable to store status information of a WLAN packet scheduled to be transmitted during said guard time, said status information indicating whether transmission of said WLAN packet occurred before the end of said guard time;
said one or more circuits are operable to transmit said Bluetooth protocol data subsequent to said adjustment of said WLAN transmission capabilities; and
said one or more circuits are operable to disable a retransmission backoff in said WLAN communication protocol subsequent to said assertion of said BT priority signal.
44. The system according to claim 43 , wherein said retransmission backoff grows exponentially.
45. The system according to claim 43 , wherein said one or more circuits are operable to deassert said BT priority signal subsequent to completion of said transmission of said Bluetooth protocol data.
46. The system according to claim 45 , wherein said one or more circuits are operable to reduce said transmit power of said WLAN transmission capabilities concurrently with a reduction in a transmit power corresponding to said transmitting of Bluetooth protocol data.
47. The system according to claim 43 , wherein said one or more circuits are operable to turn OFF a power amplifier subsequent to said adjustment of said WLAN transmission capabilities.
48. The system according to claim 41 , wherein said one or more circuits are operable to resume said WLAN transmission based on said stored status information.