Coordination of competing protocols

• US 20040048577A1
• Filed: 05/23/2003
• Published: 03/11/2004
• Est. Priority Date: 09/09/2002
• Status: Active Grant

• Current Assignee: Longhorn Automotive Group LLC (Alpha Alpha Intellectual Partners LLC)
• Original Assignee: Conexant Incorporated (Synaptics Incorporated)
• Inventors: Godfrey, Timothy Gordon, Bourk, Terrance Raymond
• Granted Patent: US 6,842,607 B2
• Time in Patent Office: Days
• US Class Current: 455/67.11
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• 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

A wireless telecommunications terminal employing both an IEEE 802.11 radio and a Bluetooth radio is disclosed. The illustrative embodiment employs a novel preemption scheme that ensures that Bluetooth preemptions of the 802.11 radio are not fatal to the 802.11 media access control (MAC) error-correction mechanism. The illustrative embodiment thus enables what appears to be concurrent 802.11 and Bluetooth activity by a single wireless telecommunications terminal. The preemption scheme does not require any changes to the 802.11 and Bluetooth protocols, or to the radios. It will be clear to those skilled in the art how to make and use alternative embodiments of the present invention for protocols other than IEEE 802.11 and Bluetooth that might interfere with each other.

Claims

1. A telecommunications terminal comprising:

a first transmitter for transmitting a first data block through a communications band in accordance with an error-correction mechanism; and

a second transmitter for;

(i) preventing said first transmitter from outputting at least a portion of said first data block into said communications band while said second transmitter transmits a second data block through said communications band, and

(ii) allowing said first transmitter to output into said communications band before said error-correction mechanism for said first data block fails.

2. The telecommunications terminal of claim 1 wherein:

said second transmitter is also for transmitting a third data block when said first transmitter is in an idle mode; and

said third data block has a higher latency tolerance than said second data block.

3. The telecommunications terminal of claim 2 wherein said second transmitter receives a signal from said first transmitter that indicates said idle mode.

4. The telecommunications terminal of claim 1 wherein said error-correction mechanism is an automatic-repeat-request mechanism.

5. A telecommunications terminal comprising:

an IEEE 802.11 transmitter for wirelessly transmitting a frame in accordance with an 802.11 automatic-repeat-request error-correction mechanism; and

a Bluetooth transmitter for;

(i) preventing said IEEE 802.11 transmitter from transmitting at least a portion of said frame while said Bluetooth transmitter transmits a packet, and

(ii) allowing said IEEE 802.11 transmitter to transmit before said 802.11 automatic-repeat-request error-correction mechanism for said frame fails.

6. The telecommunications terminal of claim 5 wherein:

said Bluetooth transmitter is also for transmitting another packet when said IEEE 802.11 transmitter is in power-save mode; and

said other packet has a higher latency tolerance than said packet.

7. The telecommunications terminal of claim 6 wherein said other packet is an asynchronous connectionless link packet.

8. The telecommunications terminal of claim 6 wherein said Bluetooth transmitter receives a signal from said IEEE 802.11 transmitter that indicates said power-save mode.

9. A telecommunications terminal comprising:

a first transmitter for transmitting a first data block through a communications band in accordance with an error-correction mechanism;

a second transmitter for;

(i) preventing said first transmitter from outputting at least a portion of said first data block into said communications band while said second transmitter transmits a second data block through said communications band, and

(ii) allowing said first transmitter to output into said communications band before said error-correction mechanism for said first data block fails; and

a processor for generating said first data block and said second data block.

10. The telecommunications terminal of claim 9 wherein said error-correction mechanism is an automatic-repeat-request mechanism.

11. The telecommunications terminal of claim 9 further comprising a display.

12. The telecommunications terminal of claim 9 further comprising a memory.

13. The telecommunications terminal of claim 9 wherein:

said second transmitter is also for transmitting a third data block when said first transmitter is in an idle mode; and

said third data block has a higher latency tolerance than said second data block.

14. The telecommunications terminal of claim 13 wherein said second transmitter receives a signal from said first transmitter that indicates said idle mode.

15. A telecommunications terminal comprising:

an IEEE 802.11 transmitter for wirelessly transmitting a frame;

a Bluetooth transmitter for;

(i) preventing said IEEE 802.11 transmitter from transmitting at least a portion of said frame while said Bluetooth transmitter transmits a packet, and

(ii) allowing said IEEE 802.11 transmitter to transmit before an IEEE 802.11 automatic-repeat-request error-correction mechanism for said frame fails; and

a processor for generating said frame and said packet.

16. The telecommunications terminal of claim 15 further comprising a display.

17. The telecommunications terminal of claim 15 further comprising a memory.

18. The telecommunications terminal of claim 15 wherein:

said Bluetooth transmitter is also for transmitting another packet when said IEEE 802.11 transmitter is in power-save mode; and

said other packet has a higher latency tolerance than said packet.

19. The telecommunications terminal of claim 18 wherein said other packet is an asynchronous connectionless link packet.

20. The telecommunications terminal of claim 15 wherein said Bluetooth transmitter receives a signal from said IEEE 802.11 transmitter that indicates said power-save mode.