SYSTEM AND METHOD FOR CO-LOCATED AND CO-CHANNEL WI-FI ACCESS POINTS

• US 20150049680A1
• Filed: 02/05/2014
• Published: 02/19/2015
• Est. Priority Date: 08/13/2013
• Status: Active Grant

• Current Assignee: Magnolia Broadband Incorporated
• Original Assignee: Magnolia Broadband Incorporated
• Inventors: JEFFERY, Stuart S., HAREL, Haim, KLUDT, Kenneth
• Granted Patent: US 9,497,781 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 74/0816 with collision avoidance
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A wireless communication system may include a plurality of co-located transceivers. The plurality of transceivers may be configured to transmit data to at least one user equipment, according to a collision sense multiple access/collision avoidance (CSMA/CA) protocol. A processor may receive a signal preamble and a sender address of the signal preamble and determine whether the sender address is included in the stored list of addresses. If the sender address is included in the stored list of addresses, the processor may allow simultaneous data transmission from two or more of the co-located transceivers.

Claims

1. A wireless communication system comprising:

a plurality of transceivers co-located to each other and each configured to transmit data to at least one user equipment using the same communication resources, according to a collision sense multiple access/collision avoidance (CSMA/CA) protocol;

a processor to;

receive a signal preamble and a sender address of the signal preamble;

determine whether the sender address is included in the stored list of addresses; and

allow simultaneous data transmission from two or more of the co-located transceivers, if the sender address is included in the stored list of addresses.

2. The wireless communication system of claim 1, wherein the processor is to allow simultaneous data transmission from two or more of the co-located transceivers by resetting a Network Allocation Vector (NAV) timer to zero.

3. The wireless communication system of claim 1, wherein the processor is to allow simultaneous data transmission from two or more of the co-located transceivers by suppressing activation of a backoff procedure.

4. The wireless communication system of claim 3, wherein the processor is to suppress activation of the backoff procedure by resetting a backoff timer to zero.

5. The wireless communication system of claim 1, wherein the processor is to track an activation status of a backoff procedure for at least two consecutive signal preambles received.

6. The wireless communication system of claim 5, wherein the processor is to suppress activation of a backoff procedure if, during a previous preamble, the activation status of a backoff procedure was off.

7. The wireless communication system of claim 5, wherein the processor is to allow activation of a backoff procedure if, during a previous preamble, the activation state of a backoff procedure was on.

8. The wireless communication system of claim 1, wherein each of the plurality of transceivers are isolated from each other by a minimum of −

100 dBm.

9. A method of wireless communication, comprising:

transmitting data, by a plurality of transceivers co-located to each other and using the same communications resources, according to a collision sense multiple access/collision avoidance (CSMA/CA) protocol;

receiving, by a processor, a signal preamble and a sender address of the signal preamble;

determining, by the processor, whether the sender address is included in a stored list of addresses; and

allowing simultaneous data transmission from two or more of the co-located transceivers, if the sender address is included in the stored list of addresses.

10. The method of claim 9, wherein allowing simultaneous data transmission from two or more of the co-located transceivers comprises resetting a Network Allocation Vector (NAV) timer to zero.

11. The method of claim 9, wherein allowing simultaneous data transmission from two or more of the co-located transceivers comprises suppressing activation of a backoff procedure.

12. The method of claim 11, wherein suppressing activation a backoff procedure comprises resetting a backoff timer to zero.

13. The method of claim 9, comprising tracking an activation state of a backoff procedure for at least two consecutive signal preambles received.

14. The method of claim 9, comprising suppressing a backoff procedure if, during a previous preamble, the activation status of a backoff procedure was off.

15. The method of claim 14, comprising allowing a backoff procedure if, during a previous preamble, the activation status of a backoff procedure was on.

16. An access point device, comprising:

a transmitter configured to transmit data according to a collision sense multiple access/collision avoidance (CSMA/CA) protocol;

a receiver configured to receive a signal preamble and a sender address of the signal preamble; and

a processor configured to reset a NAV timer if the sender address is included in a stored list of addresses.

17. The access point device of claim 16, wherein the stored list of addresses is a list of addresses of co-located access points.

18. The access point device of claim 17, wherein the list of addresses include the BSSID of each of the co-located access points.

19. The access point device of claim 16, wherein the processor is to track the activation status of a backoff procedure for every preamble received.

20. The access point device of claim 16, wherein the processor is to suppress a backoff procedure if the sender address is included in a stored list of addresses.