Wireless network that adapts concurrent interfering transmission parameters based on channel conditions

• US 20080112375A1
• Filed: 12/18/2006
• Published: 05/15/2008
• Est. Priority Date: 11/09/2006
• Status: Abandoned Application

• Current Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Bennett, James D.
• Application Number:
  US11/641,198
• Publication Number:
  US 20080112375A1
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04L 1/0007 by modifying the frame length
• CPC Class Codes: H04L 1/0017 where the mode-switching is based on Quality of Service requirement
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication

Abstract

A wireless network infrastructure that adapts frame parameters of concurrent interfering receptions in response to the dynamically varying channel conditions. The channel conditions are determined by number of associated wireless end point devices within a cell, their capabilities, anticipated bandwidth usage, QOS (Quality Of Service) demands, priority of service and idle states, cell overlap interferences, near-far interferences and noises. The wireless network infrastructure contains a wireless access point within the cell that assigns a mode to a frame or sub-frame and adapts to channel conditions by varying mode durations and payload lengths. The modes include single transmission mode, plurality of partial concurrent interfering transmission modes and full concurrent interfering transmission mode. These modes allow single as well as concurrent interfering transmissions and receptions of varying payload lengths.

Claims

1. An access point circuitry that supports a plurality of end point devices, the access point circuitry comprising:

receiver circuitry that receives a concurrent interfering transmission from the plurality of end point devices, in a current frame;

processing circuitry, communicatively coupled to the receiver circuitry, that detects the concurrent interfering transmission;

transmitter circuitry communicatively coupled to the processing circuitry;

the processing circuitry, based on a change in a channel condition, generates an instruction to change at least one frame parameter for the a next frame;

the processing circuitry delivers the instruction to adapt to the change in the at least one frame parameter during the next frame, to at least one of the plurality of end point devices via the transmitter circuitry; and

the processing circuitry detects received concurrent interfering transmission from the plurality of end point devices, in the next frame.

2. The access point circuitry of claim 1, wherein the processing circuitry delivers the instruction to adapt to the change in the at least one frame parameter during the next frame at the beginning of the next frame.

3. The access point circuitry of claim 2, wherein the next frame comprising one or more sub-frames.

4. The access point circuitry of claim 2, wherein the change in the at least one frame parameter is applicable to one of the sub-frames.

5. The access point circuitry of claim 4, wherein the frame parameter comprising duration of the one of the sub-frames.

6. The access point circuitry of claim 4, wherein the frame parameter comprising payload length.

7. The access point circuitry of claim 4, wherein the frame parameter comprising a concurrent interfering transmission mode.

8. The access point circuitry of claim 7, wherein the concurrent interfering transmission mode comprising a mode that allows only one of the plurality of end point devices to transmit during the one of the sub-frames.

9. The access point circuitry of claim 7, wherein the concurrent interfering transmission mode comprising a mode that allows selected few of the plurality of end point devices to transmit during the one of the sub-frames.

10. The access point circuitry of claim 7, wherein the concurrent interfering transmission mode comprising a mode that allows any of the plurality of end point devices to transmit during the one of the sub-frames.

11. An end point device circuitry that supports concurrent interfering receptions, the end point device circuitry comprising:

receiver circuitry that receives a concurrent interfering transmission;

processing circuitry, communicatively coupled to the receiver circuitry, that detects the concurrent interfering transmission;

the processing circuitry receives an instruction to adapt at least one frame parameter for a next frame;

the processing circuitry responds to the instruction by adapting at least one frame parameter for the next frame; and

the processing circuitry detects data from the received concurrent interfering transmission during the next frame.

12. The end point device circuitry of claim 11, wherein the frame parameter comprising duration of the next frame.

13. The end point device circuitry of claim 11, wherein the frame parameter comprising a concurrent interfering transmission mode.

14. A method performed by an access point that communicates a plurality of packets with a plurality of end point devices, in a wireless network infrastructure, the method comprising:

initializing;

establishing communication with each of the plurality of end point devices;

identifying capabilities of each of the plurality of end point devices;

determining channel conditions; and

adapting at least one frame parameter for a next frame.

15. The method of claim 14, wherein the access point informs adaptation of at least one frame parameter for a next frame during a beacon period.

16. The method of claim 14, wherein the channel condition comprising load on the access point.

17. The method of claim 16, wherein the load is determined by number of the plurality of end point devices that participate in the communication.

18. The method of claim 16, wherein the load is determined by the quality of service demands from the plurality of end point devices associated with the access point.

19. The method of claim 16, wherein the load is determined by the noise associated with the access point.

20. The method of claim 16, wherein the load is determined by the interference associated with the plurality of end point devices.