IP Library Granted Patent US 8,831,659
Granted Patent B2
US 8,831,659 · App. 11/816,061 · Granted Sep 9, 2014

Media access controller for use in a multi-sector access point array

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Quick Facts
Patent No.
US 8,831,659
App. No.
11/816,061
Granted
Sep 9, 2014
Kind
B2
Abstract

A wireless access point with a centralized media access controller MAC ( 402 ) that enables multiple radios ( 404, 412, 408 ) to share MAC resources and implement load balancing and frequency control.

Claims (37)

1. A wireless access point, comprising:

a plurality of transceivers configured to communicate over wireless medium with at least one mobile station using a first protocol, where each transceiver is associated with a channel;

a connection to a data network using a second protocol; and

a centralized media access controller configured to manage communications between the plurality of transceivers and the data network by connecting communications between the at least one mobile station and the plurality of transceivers using the first protocol with the connection to the data network using the second protocol,

where the centralized media access controller monitors at least one characteristic associated with each of the plurality of transceivers simultaneously, and one of the transceivers is selected from the plurality of transceivers for transmission of data based upon the at least one characteristic associated with reception on a first transceiver and neighboring transceivers of the plurality of transceivers.

2. The wireless access point of claim 1 , where the centralized media access controller includes a translator that translates data contained in the first protocol to data contained in the second protocol.

3. The wireless access point of claim 1 , where the first protocol is 802.11.

4. The wireless access point of claim 1 , where the second protocol is Ethernet.

5. The wireless access point of claim 1 , where the at least one characteristic is a received signal strength indication.

6. The wireless access point of claim 1 where the centralized media access controller further comprises an algorithm for managing the plurality of transceivers that results in a reduction in co-channel interference between the channels.

7. The wireless access point of claim 1 where the centralized media access controller further comprise an algorithm for synchronization of transmissions from the plurality of transceivers.

8. The wireless access point of claim 1 where the centralized media access controller further comprise an algorithm that uses at least one transmission frustration threshold that results in a delay of transmissions on one of the transceivers in the plurality of transceivers.

9. The wireless access point of claim 1 , where the centralized media access controller further comprise an algorithm that uses at least one receive frustration threshold that results in a delay of transmissions on one of the transceivers in the plurality of transceivers.

10. The wireless access point of claim 9 , where the at least one receive frustration threshold is a neighbor to the one of the transceivers in the plurality of transceivers.

11. The wireless access point of claim 1 , where the centralized media access controller further comprise an algorithm that uses at least one receive frustration threshold and at least one transmission threshold that results in a delay of transmission on one of the transceivers in the plurality of transceivers.

12. The wireless access point of claim 1 , where the plurality of transceivers are contained in a common housing.

13. The wireless access point of claim 1 , further including:

a centralized queuing system; and

a centralized frame translation engine where the centralized media access controller accesses the centralized queuing system and the centralized frame translation engine to translate frames from the first protocol to the second protocol.

14. A method for communication with a wireless access point, comprising:

communicating between a plurality of transceivers in the wireless access point and at least one mobile station with a first protocol, where each transceiver is associated with a channel;

communicating with an interface in the wireless access point to a data network using a second protocol;

managing the plurality of transceivers at a centralized media access controller configured to manage communications between the plurality of transceivers and the data network by connecting communications between the plurality of transceivers and the at least one mobile station and the data network by communicating over the interface to the data network using the second protocol; and

executing an algorithm for managing the plurality of transceivers in the centralized media access controller that results in a reduction in co-channel interference between the channels.

15. The method for communication with a wireless access point of claim 14 , further including translating data contained in the first protocol to data contained in the second protocol in the centralized media access controller.

16. The method for communication with a wireless access point of claim 14 , where the first protocol is 802.11.

17. The method for communication with a wireless access point wireless access point of claim 14 , where the second protocol is Ethernet.

18. The method for communication with a wireless access point of claim 14 , further including simultaneously monitoring with the centralized media access controller at least one characteristic associated with each of the plurality of transceivers.

19. The method for communication with a wireless access point of claim 18 , further including selecting one of the transceiver from the plurality of transceiver for transmission of data based upon the at least one characteristic of reception at a first transceiver and neighboring transceivers in the plurality of transceivers.

20. The method for communication with a wireless access point of claim 18 , where the at least one characteristic is a received signal strength indication.

21. The method for communication with a wireless access point of claim 14 , further includes executing an algorithm for synchronization of transmissions from the plurality of transceivers in the centralized media access controller.

22. The method for communication with a wireless access point of claim 14 , further including executing an algorithm in the centralized media access controller that uses at least one transmission frustration threshold that results in a delay of transmissions on one of the transceivers in the plurality of transceivers.

23. The method for communication with a wireless access point of claim 14 , further includes an algorithm that uses at least one receive frustration threshold that results in a delay of transmissions on one of the transceivers in the plurality of transceivers in the centralized media access controller.

24. The method for communication with a wireless access point of claim 23 , where the at least one receive frustration threshold is a neighboring transceiver to the one of the transceivers in the plurality of transceivers.

25. The method for communication with a wireless access point of claim 14 , further including executing an algorithm that uses at least one receive frustration threshold and at least one transmission threshold that results in a delay of transmission on one of the transceivers in the plurality of transceivers in the centralized media access controller.

26. The method for communication with a wireless access point of claim 14 , where the plurality of transceivers are contained in a common housing.

27. The method for communication with a wireless access point of claim 14 , further including translating from the first protocol to the second protocol in a centralized frame translation engine contained in the centralized media access controller, where the media access controller accesses a centralized queuing system to facilitate the translation in the centralized frame translation engine.

Assignments (18)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 11, 2020
From: RIVERBED TECHNOLOGY, INC.
To: CAMBIUM NETWORKS, LTD.
Reel/Frame 051894/0194 →
RELEASE OF SECURITY INTEREST IN CERTAIN PATENTS Recorded Aug 8, 2019
From: MORGAN STANLEY SENIOR FUNDING, INC.
To: RIVERBED TECHNOLOGY, INC.
Reel/Frame 050016/0600 →
PATENT SECURITY AGREEMENT Recorded Jul 10, 2019
From: RIVERBED TECHNOLOGY, INC.
To: MORGAN STANLEY SENIOR FUNDING, INC., AS COLLATERAL AGENT
Reel/Frame 049720/0808 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 2, 2018
From: XIRRUS LLC
To: RIVERBED TECHNOLOGY, INC.
Reel/Frame 047706/0936 →
CONVERSION TO LIMITED LIABILITY COMPANY Recorded Sep 18, 2018
From: XIRRUS, INC.
To: XIRRUS LLC
Reel/Frame 047100/0874 →
RELEASE OF SECURITY INTEREST RECORDED AT REEL 031867/FRAME 0745 Recorded May 2, 2017
From: TRIPLEPOINT VENTURE GROWTH BDC CORP., AS ASSIGNEE OF TRIPLEPOINT CAPITAL LLC
To: XIRRUS, INC.
Reel/Frame 042388/0753 →
RELEASE OF INTELLECTUAL PROPERTY SECURITY AGREEMENT RECORDED AT REEL 028307/FRAME 0162 Recorded May 2, 2017
From: SILICON VALLEY BANK
To: XIRRUS, INC.
Reel/Frame 042388/0296 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 17, 2014
From: BERTAGNA, DREW; ROSEN, DAVID B.
To: XIRRUS, INC.
Reel/Frame 033335/0902 →
RELEASE OF SECURITY INTEREST Recorded Apr 30, 2014
From: CARR & FERRELL LLP
To: XIRRUS, INC.
Reel/Frame 032794/0265 →
RELEASE OF SECURITY INTEREST Recorded Apr 30, 2014
From: CARR & FERRELL LLP
To: XIRRUS, INC.
Reel/Frame 032794/0290 →
ASSIGNMENT OF SECURITY AGREEMENT (REEL 031867, FRAME 0745) Recorded Mar 7, 2014
From: TRIPLEPOINT CAPITAL LLC
To: TRIPLEPOINT VENTURE GROWTH BDC CORP.
Reel/Frame 032410/0338 →
SECURITY AGREEMENT Recorded Mar 3, 2014
From: XIRRUS, INC.
To: CARR & FERRELL LLP
Reel/Frame 032380/0252 →
SECURITY AGREEMENT Recorded Dec 23, 2013
From: XIRRUS, INC.
To: TRIPLEPOINT CAPITAL LLC
Reel/Frame 031867/0745 →
SECURITY AGREEMENT Recorded Mar 5, 2013
From: XIRRUS, INC.
To: CARR & FERRELL, LLP
Reel/Frame 029923/0752 →
SECURITY AGREEMENT Recorded May 31, 2012
From: XIRRUS, INC.
To: SILICON VALLEY BANK
Reel/Frame 028307/0162 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 12, 2008
From: CLEM, SHAUN
To: XIRRUS, INC.
Reel/Frame 020936/0940 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 4, 2008
From: CONLEY, MICHAEL R.
To: XIRRUS, INC.
Reel/Frame 020759/0907 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 17, 2008
From: DE LA GARRIGUE, MICHAEL
To: XIRRUS, INC.
Reel/Frame 020659/0448 →