Wireless network that utilizes concurrent interfering transmission and MIMO techniques

• US 8,126,396 B2
• Filed: 12/18/2006
• Issued: 02/28/2012
• Est. Priority Date: 11/09/2006
• Status: Expired due to Fees

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Bennett, James D.
• Primary Examiner(s): Pan, Yuwen
• Assistant Examiner(s): AYOTUNDE, AYODEJI O
• Application Number:
  US11/641,143
• Publication Number:
  US 20080112499A1
• Time in Patent Office: 1,898 Days
• Field of Search: None
• US Class Current: 455/41.2
• CPC Class Codes: H04B 7/00 Radio transmission systems, i.e. using radiation field H04B10/00, H04B15/00 take precedence
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal

Abstract

A wireless network infrastructure that adapts frame parameters of concurrent interfering and MIMO transmission and receptions in response to 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 consists of an access point that is adapted to transmit concurrent interfering transmissions, using a multiple input/multiple output scheme. The access point responds to the dynamically varying channel conditions by adapting the frame parameters of the concurrent interfering transmissions and parameters of multiple input/multiple output schemes.

Claims

1. An access point circuitry that supports reception of concurrent interfering transmissions utilizing a multiple input/multiple output technique from a plurality of end point devices, the access point circuitry comprising:

receiver circuitry operable to receive the concurrent interfering transmissions from the plurality of end point devices, comprising a multiple input/multiple output transceiver circuitry;

processing circuitry, communicatively coupled to the receiver circuitry, that is operable to decode the concurrent interfering transmissions;

transmitter circuitry communicatively coupled to the processing circuitry;

the processing circuitry, based on a change in a channel condition is operable to generate an instruction to change at least one frame parameter using the multiple input/multiple output technique;

the processing circuitry is operable to deliver the instruction to at least one of the plurality of end point devices via the transmitter circuitry;

the receiver circuitry is operable to receive the concurrent interfering transmissions, utilizing the multiple input/multiple output transceiver circuitry; and

the processing circuitry is operable to decode the received concurrent interfering transmissions; and

the processing circuitry based on channel conditions during subsequent frames, wherein the channel conditions during subsequent frames includes a number of the plurality of end point devices associated with the access point circuitry, is operable to;

generate an instruction directing communication using a single transmission mode during a first frame, wherein the first frame includes;

a beacon period, contention free transmission period having a first single transmission mode and a contention period having a second single transmission mode;

generate an instruction directing communication using a partial concurrent interfering transmission mode during a second frame, wherein the second frame includes;

a beacon period, contention free transmission period having a first partial concurrent interfering transmission mode, a contention period having a second partial concurrent interfering transmission mode; and

generate an instruction directing communication using a full concurrent transmission mode during a third frame, wherein the third frame includes;

a beacon period and a full concurrent interfering transmission mode period.

2. The access point circuitry of claim 1, wherein the processing circuitry further generating an instruction to change at least one parameter related to the multiple input/multiple output technique.

3. The access point circuitry of claim 2, wherein the multiple input/multiple output transceiver circuitry adapts to the change in the at least one parameter related to the multiple input/multiple output technique, in response to the instruction.

4. The access point circuitry of claim 2, wherein the parameter related to the multiple input/multiple output technique determines a concurrent interfering transmission mode.

5. The access point circuitry of claim 4, wherein the concurrent interfering transmission mode comprising a mode that allows selected few of plurality of transceiver circuitry that is built into the multiple input/multiple output transceiver circuitry to transmit during a frame.

6. The access point circuitry of claim 1, wherein the change in the at least one frame parameter is applicable to a frame.

7. The access point circuitry of claim 6, wherein the frame parameter comprising duration of the frame.

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

9. The access point circuitry of claim 6, wherein the frame parameter determines a concurrent interfering transmission mode.

10. The access point circuitry of claim 9, wherein the partial concurrent interfering transmission mode comprising a mode that allows selected few of the plurality of end point devices to transmit during the frame.

11. The access point circuitry of claim 9, wherein the full concurrent interfering transmission mode comprising a mode that allows any of the plurality of end point devices to transmit during the frame.

12. An end point device circuitry that supports concurrent interfering receptions and multiple input/multiple output receptions, the end point device circuitry comprising:

receiver circuitry that is operable to receive a concurrent interfering transmission utilizing a multiple input/multiple output technique, wherein the concurrent interfering transmission is included in a first frame having a beacon period, contention free transmission period having a first partial concurrent interfering transmission mode and a contention period having a second partial concurrent interfering transmission mode;

processing circuitry, communicatively coupled to the receiver circuitry, that is operable to decode the concurrent interfering transmission;

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

the processing circuitry is operable to respond to the instruction by adapting at least one frame parameter for the next frame, the at least one frame parameter indicating that a communication mode should be changed during the next frame from a partial concurrent interfering transmission mode to a full concurrent transmission mode;

the processing circuitry is operable to detect data from a received full concurrent transmission that utilizes the multiple input/multiple output technique during the next frame, wherein the next frame includes;

a beacon period and a full concurrent interfering transmission mode period.

13. The end point device circuitry of claim 12, wherein the processing circuitry further receiving instruction to change at least one parameter related to the multiple input/multiple output technique.

14. The end point device circuitry of claim 13, wherein the receiver circuitry adapts to the change in the at least one parameter related to the multiple input/multiple output technique, in response to the instruction.

15. The end point device circuitry of claim 13, wherein the parameter related to the multiple input/multiple output technique determines a concurrent interfering transmission mode.

16. The end point device circuitry of claim 15, wherein the concurrent interfering transmission mode includes a mode that allows a selected few of plurality of transceiver circuitry that is built into the receiver circuitry to receive during a frame.

17. 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:

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

identifying channel conditions;

determining a first mode of transmission for a first frame, wherein the first mode of transmission includes a single transmission mode and the first frame includes;

a beacon period, contention free transmission period having a first single transmission mode and a contention period having a second single transmission mode;

broadcasting the first mode of transmission;

communicating using the first mode of transmission for the first frame, utilizing multiple input/multiple output capabilities of the access point and the plurality of end point devices;

determining a second mode of transmission for a second frame, the second mode of transmission includes one or more partial concurrent interfering transmission modes, wherein the second frame includes;

a beacon period, contention free transmission period having a first partial concurrent interfering transmission mode, a contention period having a second partial concurrent interfering transmission mode;

broadcasting the second mode of transmission;

communicating using the second mode of transmission for the second frame, utilizing multiple input/multiple output capabilities of the access point and the plurality of end point devices;

determining a third mode of transmission for a third frame, the third mode of transmission includes a full concurrent interfering transmission mode, wherein the third frame includes;

a beacon period and a full concurrent interfering transmission mode period;

broadcasting the third mode of transmission;

communicating using the third mode of transmission for the third frame, utilizing multiple input/multiple output capabilities of the access point and the plurality of end point devices.

18. The method of claim 17, wherein partial concurrent interfering transmission modes allow the preselected number of the plurality of end point devices to transmit or receive concurrently.

19. The method of claim 17, wherein the multiple input/multiple output modes are determined by the number of transceivers utilized.

20. The method of claim 17, wherein communicating using the first mode of transmission, further comprises:

aggregating packets for transmission to a unique recipient end point device during the first frame.

21. The method of claim 20, wherein communicating using the second mode of transmission, further comprises

aggregating packets for a preselected number of the plurality of end point devices for transmission during the second frame.

22. The method of claim 17 wherein the first frame of single transmission mode, second frame of partial concurrent interfering transmission mode and third frame of full concurrent interfering transmission modes are transmitted using space-time block coding.