IP Library › Granted Patent US 10,560,244
Granted Patent B2
US 10,560,244 · App. 13/949,704 · Granted Feb 11, 2020

System and method for reducing inter-cellsite interference in full-duplex communications

Inventors: Rittwik Jana (Parsippany, NJ); Vaneet Aggarwal (Parsippany, NJ); Lusheng Ji (Randolph, NJ); Rajesh Krishna Panta (Bridgewater, NJ); Kadangode K. Ramakrishnan (Berkeley Heights, NJ); Christopher W. Rice (Parsippany, NJ); Nemmara K. Shankaranarayanan (Bridgewater, NJ); Vinay Anant Vaishampayan (Summit, NJ)
Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
H04L5/0073H04L5/14
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Quick Facts
Patent No.
US 10,560,244
App. No.
13/949,704
Granted
Feb 11, 2020
Kind
B2
Abstract

Disclosed herein are systems, methods, and computer-readable storage devices for reducing inter-cellsite interference during full-duplex communication. A system receives a channel amplitude and a phase estimate between a first station and a second station, the first station and the second station creating inter-cellsite interference on a channel during full-duplex communications. The system calculates a level of the inter-cellsite interference between the first station and the second station based on the channel amplitude and the phase estimate and generates a cancellation signal based on the inter-cellsite interference. The system then communicates the cancellation signal to the first station for transmission with additional data during additional full-duplex communications.

Claims (32)

1. A method comprising:

identifying, at a central controller, inter-cellsite interference on a channel, the inter-cellsite interference caused by a first full-duplex, simultaneous and bi-directional communication on the channel between a first mobile station and a first base station and by a second full-duplex, simultaneous and bi-directional communication between a second mobile station and a second base station communicating on the channel, wherein only the first mobile station is in a region of shared range of both the first base station and the second base station, and wherein the inter-cellsite interface impacts the first mobile station;

receiving a channel amplitude and a phase estimate of the second full-duplex, simultaneous and bi-directional communication between the second mobile station and the second base station on the channel;

calculating, via a processor at the central controller, a level of the inter-cellsite interference based on the channel amplitude and the phase estimate;

generating, at the central controller, a cancellation signal based on the inter-cellsite interference; and

communicating, via a non-transitory medium, the cancellation signal from the central controller to the first base station for transmission with additional data during additional full-duplex communication between the first base station and the first mobile station, wherein the cancellation signal, when applied to the inter-cellsite interference, attenuates the inter-cellsite interference to a threshold level.

2. The method of claim 1 , wherein the channel takes up a defined amount of space on an electromagnetic spectrum.

3. The method of claim 1 , wherein the inter-cellsite interference occurs at a wireless device.

4. The method of claim 1 , wherein the non-transitory medium comprises at least one of a fiber optic cable and a copper cable.

5. The method of claim 1 , wherein the first transmission and a second transmission create the inter-cellsite interference.

6. A system comprising:

a processor; and

a computer-readable storage medium having instruction stored which, when executed by the processor, cause the processor performing operations comprising:

identifying inter-cellsite interference on a channel, the inter-cellsite interference caused by a first full-duplex, simultaneous and bi-directional communication on the channel between a first mobile station and a first base station and by a second full-duplex, simultaneous and bi-directional communication between a second mobile station and a second base station communicating on the channel, wherein only the first mobile station is in a region of shared range of both the first base station and the second base station, and wherein the inter-cellsite interface impacts the first mobile station;

receiving a channel amplitude and a phase estimate of the second full-duplex, simultaneous and bi-directional communication between the second mobile station and the second base station on the channel;

calculating a level of the inter-cellsite interference based on the channel amplitude and the phase estimate;

generating a cancellation signal based on the inter-cellsite interference; and

communicating the cancellation signal from the system to the first base station for transmission with additional data during additional full-duplex communication between the first base station and the first mobile station, wherein the cancellation signal, when applied to the inter-cellsite interference, attenuates the inter-cellsite interference to a threshold level.

7. The system of claim 6 , wherein the channel takes up a defined amount of space on an electromagnetic spectrum.

8. The system of claim 6 , wherein the inter-cellsite interference occurs at a wireless device.

9. The system of claim 6 , wherein the non-transitory medium comprises at least one of a fiber optic cable and a copper cable.

10. The system of claim 6 , wherein the first transmission and the second transmission create the inter-cellsite interference.

11. A computer-readable storage device having instruction stored which, when executed by a computing device, cause the computing device performing operations comprising:

identifying inter-cellsite interference on a channel, the inter-cellsite interference caused by a first full-duplex, simultaneous and bi-directional communication on the channel between a first mobile station and a first base station and by a second full-duplex, simultaneous and bi-directional communication between a second mobile station and a second base station communicating on the channel, wherein only the first mobile station is in a region of shared range of both the first base station and the second base station, and wherein the inter-cellsite interface impacts the first mobile station;

receiving a channel amplitude and a phase estimate of the second full-duplex, simultaneous and bi-directional communication between the second mobile station and the second base station on the channel;

calculating a level of the inter-cellsite interference based on the channel amplitude and the phase estimate;

generating a cancellation signal based on the inter-cellsite interference; and

communicating the cancellation signal from the computing device to the first base station for transmission with additional data during additional full-duplex communication between the first base station and the first mobile station, wherein the cancellation signal, when applied to the inter-cellsite interference, attenuates the inter-cellsite interference to a threshold level.

12. The computer-readable storage device of claim 11 , wherein the channel takes up a defined amount of space on an electromagnetic spectrum.

13. The computer-readable storage device of claim 11 , wherein the inter-cellsite interference occurs at a wireless device.

14. The computer-readable storage device of claim 11 , wherein the non-transitory medium comprises at least one of a fiber optic cable and a copper cable.

15. The computer-readable storage device of claim 11 , wherein the cancellation signal, when applied to the inter-cellsite interference, attenuates the inter-cellsite interference to a threshold level for interpretation.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 24, 2013
From: JANA, RITTWIK; AGGARWAL, VANEET; JI, LUSHENG; PANTA, RAJESH KRISHNA; RAMAKRISHNAN, KADANGODE K.; RICE, CHRISTOPHER W.; SHANKARANARAYANAN, NEMMARA K.; VAISHAMPAYAN, VINAY ANANT
To: AT&T INTELLECTUAL PROPERTY I, L.P.
Reel/Frame 030888/0538 →
Continuity (1)
Related Publication 20150029906A1 · Jan 29, 2015
Cited By (1)
US 12,301,266