System and method for reducing side-lobe contamination effects in Wi-Fi access points

• US 8,774,150 B1
• Filed: 07/31/2013
• Issued: 07/08/2014
• Est. Priority Date: 02/13/2013
• Status: Expired due to Fees

• Current Assignee: Magnolia Broadband Incorporated
• Original Assignee: Magnolia Broadband Incorporated
• Inventors: Kludt, Kenneth, Wang, Sherwin J., Jeffery, Stuart S., Harel, Haim, Chen, Phil F.
• Primary Examiner(s): Wu, Jianye
• Application Number:
  US13/955,320
• Time in Patent Office: 342 Days
• US Class Current: 370/338
• CPC Class Codes: H04B 7/0617 for beam forming

Abstract

A multibeam access point may include a plurality of co-located, beamforming transceivers, each configured to transmit data to a user equipment on a first channel. The multibeam access point may further include a cluster transceiver co-located with the beamforming transceivers, configured to transmit data to the user equipment on a second channel. A processor or controller may monitor whether at least two of the beamforming transceivers have detected data transmission from the user equipment. Based on the monitoring, the processor may allow the cluster transceiver to transmit data to the user equipment.

Claims

1. A wireless communication system comprising:

a plurality of co-located, beamforming transceivers, each configured to transmit data to a user equipment on a first channel and associated with a respective directive antenna beam;

a cluster transceiver co-located with the beamforming transceivers, configured to transmit data to the user equipment on a second channel, wherein the cluster transceiver is associated with an antenna pattern having a wider azimuth and lower power than the directive antenna beams respectively associated with each of the plurality of beamforming transceivers; and

a processor to;

monitor whether at least two of the beamforming transceivers have detected data transmission from the user equipment, and

based on the monitoring, allow the cluster transceiver to transmit data to the user equipment.

2. The wireless communication system of claim 1, wherein the processor is to determine whether at least two of the beamforming transceivers have detected data transmission from the user equipment by determining whether at least two of the beamforming transceivers detect a registration request from the user equipment.

3. The wireless communication system of claim 2, wherein the processor is to reject the registration request if at least two beamforming transceivers detect the registration request.

4. The wireless communication system of claim 2, wherein the processor is to accept the registration request if only one of the beamforming transceivers detects the registration request.

5. The wireless communication system of claim 1, wherein the processor is to track a number of times in a predetermined time period that at least two of the beamforming transceivers have detected data transmission from the user equipment.

6. The wireless communication system of claim 5, wherein the processor is to allow the cluster transceiver to transmit data to the user equipment if the tracked number of times is greater than a threshold.

7. The wireless communication system of claim 1, wherein the beamforming transceivers maintain a primary service set identification and the cluster transceiver maintains a secondary service set identification.

8. The wireless communication system of claim 1, wherein the processor is to allow the cluster transceiver to transmit data to the user equipment in accordance with a standard protocol defined by IEEE 802.11k or CCX.

9. A method of wireless communication, comprising:

transmitting data, by a user equipment, to at least one of a plurality of co-located beamforming transceivers, each of said beamforming transceivers associated with a respective directive antenna beam;

monitoring whether at least two of the beamforming transceivers have detected the user equipment on a first channel; and

based on the monitoring, allowing data transmission between the user equipment and a cluster transceiver on a second channel, wherein the cluster transceiver is associated with an antenna pattern having a wider azimuth and lower power than the directive antenna beams respectively associated with each of the plurality of beamforming transceivers.

10. The method of claim 9, wherein monitoring whether at least two of the beamforming transceivers have detected the user equipment comprises determining whether at least two of the beamforming transceivers detect a registration request from the user equipment.

11. The method of claim 10, comprising rejecting the registration request if at least two of the beamforming transceivers detect the registration request.

12. The method of claim 11, comprising allowing registration if only one of the beamforming transceivers detects the registration request.

13. The method of claim 12, comprising tracking a number of times in a predetermined time period that at least two beamforming transceivers can detect the user equipment in a predetermined time period.

14. The method of claim 13, comprising allowing the cluster transceiver to transmit data to the user equipment if the tracked number of times is greater than a threshold.

15. The method of claim 9, comprising maintaining, by the beamforming transceivers, a primary service set identification, and maintaining, by the cluster transceiver, a secondary service set identification.

16. The method of claim 15, wherein allowing data transmission between the user equipment and a cluster transceiver on a second channel comprises accepting a registration request by the user equipment on the secondary service set identification.

17. The method of claim 9, comprising allowing data transmission between the user equipment and a cluster transceiver on a second channel in accordance with a standard protocol defined by IEEE 802.11k or CCX.

18. A multibeam access point device, comprising:

a plurality of beamforming access points to transmit data to a user equipment on one channel, each of said beamforming access points associated with a respective directive antenna beam;

a cluster access point to transmit data to the user equipment on a second channel, wherein the cluster transceiver is associated with an antenna pattern having a wider azimuth and lower power than the directive antenna beams respectively associated with each of the plurality of beamforming transceivers; and

a controller to allow registration of the user equipment with the cluster access point if at least two of the beamforming access points detect a registration request from the user equipment.

19. The multibeam access point device of claim 18, wherein the controller is to reject a registration request from the user equipment to a beamforming access point if at least two of the beamforming access points detect the registration request from the user equipment.

20. The multibeam access point device of claim 18, wherein the plurality of beamforming access points each store a primary service set identification and the cluster access point stores a secondary service set identification.

21. The multibeam access point device of claim 20, wherein the controller is to accept a registration request from the user equipment to the cluster access point on the secondary service set identification.

22. The multibeam access point device of claim 18, wherein the controller is to track a number of times in a predetermined time period that at least two of the beamforming access points have detected data transmission from the user equipment.