Wireless network that utilizes concurrent interfering transmission and MIMO techniques

• US 20080112499A1
• Filed: 12/18/2006
• Published: 05/15/2008
• Est. Priority Date: 11/09/2006
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Bennett, James D.
• Granted Patent: US 8,126,396 B2
• Time in Patent Office: Days
• US Class Current: 375/267
• 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 that receives 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 decodes the concurrent interfering transmissions;

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 using the multiple input/multiple output technique;

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

the receiver circuitry receives the concurrent interfering transmissions, utilizing the multiple input/multiple output transceiver circuitry; and

the processing circuitry decodes the received concurrent interfering transmissions.

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 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 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 receives a concurrent interfering transmission utilizing a multiple input/multiple output technique;

processing circuitry, communicatively coupled to the receiver circuitry, that decodes 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;

the processing circuitry detects data from the received concurrent interfering transmission that utilizes the multiple input/multiple output technique during the next frame.

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 comprising a mode that allows 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 mode of transmission;

broadcasting the mode of transmission; and

communicating using the mode of communication, utilizing multiple input/multiple output capabilities of the access point and the plurality of end point devices.

18. The method of claim 17, wherein the mode of transmission comprising at least one of single transmission mode, full concurrent interfering transmission mode, one of plurality of partial concurrent interfering transmission modes or one of plurality of multiple input/multiple output modes.

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

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