Synchronous inter-piconet routing

• US 20050213550A1
• Filed: 03/26/2004
• Published: 09/29/2005
• Est. Priority Date: 03/26/2004
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Krishnan, Ranganathan, Nanda, Sanjiv
• Granted Patent: US 7,978,710 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 84/20 Master-slave selection or change arrangements
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

Systems and techniques are disclosed relating to wireless communications. The systems and techniques involve wireless communications wherein a process, module or communications terminal schedules communications. The scheduling function may include scheduling an inter-piconet transmission between first transmitting and receiving terminals including scheduling a power level for the inter-piconet transmission that satisfies a target quality parameter at the first receiving terminal. The scheduling function may also include scheduling an intra-piconet transmission between second transmitting and receiving terminals, including scheduling a power level for the intra-piconet transmission that satisfies a target quality parameter at the second receiving terminal. The intra-piconet transmission may be scheduled simultaneous with the inter-piconet transmission.

Claims

1. A method of scheduling communications, comprising:

scheduling an inter-piconet transmission between first transmitting and receiving terminals including scheduling a power level for the inter-piconet transmission that satisfies a target quality parameter at the first receiving terminal; and

scheduling an intra-piconet transmission between second transmitting and receiving terminals, including scheduling a power level for the intra-piconet transmission that satisfies a target quality parameter at the second receiving terminal, the intra-piconet transmission being scheduled simultaneous with the inter-piconet transmission.

2. The method of claim 1 further comprising transmitting the schedule for the inter-piconet transmission to the first transmitting terminal, and transmitting the schedule for the intra-piconet transmission to the second transmitting terminal.

3. The method of claim 1 wherein the quality parameter comprises a carrier-to-interference ratio.

4. The method of claim 1 wherein the first transmitting terminal and the second transmitting and receiving terminals are members of a first piconet, and the first receiving terminal is a member of a second piconet.

5. The method of claim 1 wherein the first transmitting terminal and the second transmitting and receiving terminals are members of a first piconet, and the first receiving terminal is a member of the first piconet and a second piconet.

6. The method of claim 5 wherein the inter-piconet transmission comprises information, the information being destined for a third terminal, the third terminal being a member of the second piconet, but not a member of the first piconet, the method further comprising scheduling a transmission of the information from the first receiving terminal to the third terminal.

7. The method of claim 1 further comprising receiving information relating to path loss between the first transmitting and receiving terminals, the scheduled power level for the inter-piconet transmission being a function of the information.

8. The method of claim 1 wherein the first transmitting terminal and the second transmitting and receiving terminals are members of a first piconet, and the first receiving terminal is a member of a second piconet, the method further comprising transmitting the inter-piconet transmission schedule to a third terminal in the second piconet, the third terminal being responsible for scheduling intra-piconet transmissions in the second piconet.

9. The method of claim 1 further comprising assigning a first spreading code to the inter-piconet transmission, and a second spreading code to the intra-piconet transmission, the first spreading code being different from the second spreading code.

10. A method of scheduling communications, comprising:

receiving in a first piconet information relating to a scheduled inter-piconet transmission from a second piconet; and

scheduling a plurality of intra-piconet transmissions in the first piconet with no intra-piconet transmissions being scheduled simultaneously with the inter-piconet transmission.

11. A method of scheduling communications, comprising:

receiving in a first piconet timing information relating to a scheduled inter-piconet transmission from a first transmitting terminal in a second piconet to a first receiving terminal in the first piconet;

scheduling an intra-piconet transmission between second transmitting and receiving terminals in the first piconet simultaneously with the inter-piconet transmission;

scheduling a power level for the inter-piconet transmission that satisfies a target quality parameter at the first receiving terminal; and

scheduling a power level for the intra-piconet transmission that satisfies a target quality parameter at the second receiving terminal.

12. The method of claim 11 further comprising transmitting the scheduled power level for the inter-piconet transmission to a third terminal in the second piconet, the third terminal being responsible for scheduling intra-piconet transmissions in the second piconet.

13. A communications terminal, comprising:

a scheduler configured to schedule an inter-piconet transmission between first transmitting and receiving terminals including scheduling a power level for the inter-piconet transmission that satisfies a target quality parameter at the first receiving terminal, the scheduler further being configured to schedule an intra-piconet transmission between second transmitting and receiving terminals including scheduling a power level for the intra-piconet transmission that satisfies a target quality parameter at the second receiving terminal, the intra-piconet transmission being scheduled simultaneous with the inter-piconet transmission.

14. The communications terminal of claim 13 further comprising a transmitter configured to transmit the schedule of the inter-piconet transmission to the first transmitting terminal, and transmit the schedule of the of intra-piconet transmission to the second transmitting terminal.

15. The communications terminal of claim 14 further comprising a transceiver having the transmitter, and a user interface configured to allow a user to engage in communications with another terminal through the transceiver.

16. The communications terminal of claim 15 wherein the user interface comprises a keypad, a display, a speaker and a microphone.

17. The communications terminal of claim 13 wherein the quality parameter comprises a carrier-to-interference ratio.

18. The communications terminal of claim 13 wherein the first transmitting terminal and the second transmitting and receiving terminals are members of a first piconet, and the first receiving terminal is a member of a second piconet.

19. The communications terminal of claim 13 wherein the first transmitting terminal and the second transmitting and receiving terminals are members of a first piconet, and the first receiving terminal is a member of the first piconet and a second piconet.

20. The communications terminal of claim 19 wherein the inter-piconet transmission comprises information, the information being destined for a third terminal, the third terminal being a member of the second piconet, but not a member of the first piconet, the scheduler being further configured to schedule a transmission of the information from the first receiving terminal to the third terminal.

21. The communications terminal of claim 13 further comprising a receiver configured to receive information relating to path loss between the first transmitting and receiving terminals, the scheduled power level for the inter-piconet transmission being a function of the information.

22. The communications terminal of claim 13 wherein the first transmitting terminal and the second transmitting and receiving terminals are members of a first piconet, and the first receiving terminal is a member of a second piconet, the communications terminal further comprising a transmitter configured to transmit the inter-piconet transmission schedule to a third terminal in the second piconet, the third terminal being responsible for scheduling intra-piconet transmissions in the second piconet.

23. The communications terminal of claim 13 further comprising a processor configured to assign a first spreading code to the inter-piconet transmission and a second spreading code to the intra-piconet transmission, the first spreading code being different from the second spreading code.

24. A communications terminal operable in a first piconet, comprising:

a receiver configured to receive information relating to a scheduled inter-piconet transmission from a second piconet; and

a scheduler configured to schedule a plurality of intra-piconet transmissions in the first piconet with no intra-piconet transmissions being scheduled simultaneously with the inter-piconet transmission.

25. A communications terminal operable in a first piconet, comprising:

a receiver configured to receive timing information relating to a scheduled inter-piconet transmission from a first transmitting terminal in a second piconet to a first receiving terminal in the first piconet; and

a scheduler configured to schedule an intra-piconet transmission between second transmitting and receiving terminals in the first piconet simultaneously with the inter-piconet transmission, the scheduler being further configured to schedule a power level for the inter-piconet transmission that satisfies a target quality parameter at the first receiving terminal, and schedule a power level for the intra-piconet transmission that satisfies a target quality parameter at the second receiving terminal.

26. The communications terminal of claim 25 further comprising a transmitter configured to transmit the scheduled power level for the inter-piconet transmission to a third terminal in the second piconet, the third terminal being responsible for scheduling intra-piconet transmissions in the second piconet.

27. A communications terminal, comprising:

means for scheduling an inter-piconet transmission between first transmitting and receiving terminals including scheduling a power level for the inter-piconet transmission that satisfies a target quality parameter at the first receiving terminal; and

means for scheduling an intra-piconet transmission between second transmitting and receiving terminals, including scheduling a power level for the intra-piconet transmission that satisfies a target quality parameter at the second receiving terminal, the intra-piconet transmission being scheduled simultaneous with the inter-piconet transmission.