Method and system for bluetooth and wireless local area network coexistence

• US 20060239223A1
• Filed: 04/21/2005
• Published: 10/26/2006
• Est. Priority Date: 04/21/2005
• Status: Abandoned Application

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Sherman, Itay, Ophir, Lior
• Application Number:
  US11/111,379
• Publication Number:
  US 20060239223A1
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• 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
• CPC Class Codes: H04W 88/10 adapted for operation in multiple networks, e.g. multi-mode access points

Abstract

A method of transferring data between an access point and a station in a coexistent wireless local area network (WLAN) during a period that falls between successive Bluetooth (BT) slots, in which the access point response time may be relatively short or relatively long. A system for a coexistent WLAN including an access point that identifies or broadcasts a management frame including a coexistent information element, a station that recognizes or receives the management frame upon registration, and a coexistent operation that downloads a data frame from the access point to the station either between the two successive BT slots.

Claims

1. A method of transferring data between an access point and a station in a coexistent wireless local area network (WLAN), the method comprising:

sending a frame from the station to the access point after a Bluetooth (BT) voice slot and setting a duration field of the frame to cover a next BT voice slot; and

transferring a data frame from the access point to the station,

wherein the transferring of the data frame occurs between the BT voice slot and the next BT voice slot.

2. The method of claim 1, further comprising:

acknowledging receipt of the frame from the station by the access point sending an acknowledgement frame to the station.

3. The method of claim 2, further comprising:

acknowledging receipt of the data frame from the access point by the station sending an acknowledgement frame to the access point.

4. The method of claim 1, wherein the frame sent from the station to the access point after the BT voice slot comprises at least one of a data frame and a Power Save (PS)-Poll frame.

5. The method of claim 1, wherein the BT voice slot and the next BT voice slot comprises a Synchronous Connection Oriented (SCO) link for one of data and voice.

6. The method of claim 1, wherein the BT voice slot and the next BT voice slot comprises an enhanced Synchronous Connection Oriented (eSCO) link for one of data and voice.

7. The method of claim 1, wherein a period between the BT voice slot and the next BT voice slot is 2.5 ms.

8. The method of claim 1, wherein the data frame has an upper bound of approximately 1 ms.

9. A method of transferring data between an access point and a station in a coexistent wireless local area network (WLAN), the method comprising:

sending a first frame from the station to the access point after a first Bluetooth (BT) voice slot and the station receiving an acknowledgment frame from the access point;

sending a second frame from the station to the access point that reserves a wireless medium to the station of the coexistent WLAN and setting a duration field of the second frame to cover a second BT voice slot;

transferring a data frame from the access point to the station after the second BT voice slot; and

acknowledging by the station, receipt of the data frame,

wherein the sending a second frame provides a contention-free WLAN period for the second BT voice slot.

10. The method of claim 9, further comprising:

acknowledging by the station, the receipt of the data frame from the access point.

11. The method of claim 9, wherein the first frame sent from the station to the access point after the first BT voice slot comprises at least one of a data frame and a Power Save (PS)-Poll frame.

12. The method of claim 9, wherein the first BT voice slot and the second BT voice slot comprises a Synchronous Connection Oriented (SCO) link for one of data and voice.

13. The method of claim 9, wherein the first BT voice slot and the second BT voice slot comprises an enhanced Synchronous Connection Oriented (eSCO) link for one of data and voice.

14. The method of claim 9, wherein a period between the first BT voice slot and the second BT voice slot is 2.5 ms.

15. A system for a coexistent wireless local area network (WLAN) comprising:

an access point that identifies a management frame including a coexistent information element;

a station that sends the management frame to the access point upon registration; and

a coexistent operation that transfers data between the access point and the station between successive Bluetooth (BT) voice slots.

16. The system of claim 15, wherein the successive BT voice slots comprise Synchronous Connection Oriented (SCO) links for one of data and voice and the coexistent WLAN transmits between the successive BT voice slots.

17. The system of claim 15, wherein the successive BT voice slots comprise enhanced Synchronous Connection Oriented (eSCO) links for one of data and voice and the coexistent WLAN transmits between the successive BT voice slots.

18. The system of claim 15, wherein the transfer of data from the access point to the station has an upper bound, such that the data is transferred between the successive BT voice slots.

19. A system for a coexistent wireless local area network (WLAN) comprising:

an access point that broadcasts a management frame including a coexistent information element;

a coexistent station that registers with the access point; and

a coexistent operation that transfers data between the access point and the station between successive Bluetooth (BT) voice slots.

20. The system of claim 19, wherein the successive BT voice slots comprise Synchronous Connection Oriented (SCO) links for one of data and voice and the coexistent WLAN transmits between the successive BT voice slots.

21. The system of claim 19, wherein the successive BT voice slots comprise enhanced Synchronous Connection Oriented (eSCO) links for one of data and voice and the coexistent WLAN transmits between the successive BT voice slots.

22. The system of claim 19, wherein the transfer of data from the access point to the station has an upper bound, such that the data is transferred between the successive BT voice slots.