IP Library › Granted Patent US 10,187,098
Granted Patent B1
US 10,187,098 · App. 15/640,382 · Granted Jan 22, 2019

Facilitation of passive intermodulation cancelation via machine learning

Inventors: Ernest Tsui (Pleasanton, CA); Paul Maxwell (Piedmont, CA); Weihua Ye (Bartlett, IL)
Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
H04B1/109G06N99/005H04B1/0466H04B1/0475H04B17/11H04B17/21
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Quick Facts
Patent No.
US 10,187,098
App. No.
15/640,382
Granted
Jan 22, 2019
Kind
B1
Abstract

A passive intermodulation detection system is provided to remotely identify passive intermodulation at a base station site and diagnose the type of intermodulation and location of the non-linearity that is the source of the passive intermodulation. A passive intermodulation cancelation system can generate an equivalent signal to a received interference signal and use the equivalent signal to generate an error signal. The error signal can then be used to reinforce a learning system and converge on a steady state of the interference signal to cancel other interference signals.

Claims (53)

1. A method, comprising:

determining, by a network device, comprising a processor, of a wireless network, a first signal interference of a first signal at a reception port;

determining, by the network device, an interference product associated with the first signal interference;

based on the determining, ranking, by the network device, the interference product according to a magnitude of the first signal interference, resulting in a first ranked interference signal;

based on a rank of the first ranked interference signal, generating a second signal interference; and

utilizing, by the network device, a channel associated with a transmitter port and the reception port to facilitate modification of a second signal to be sent from the transmitter port to the reception port.

2. The method of claim 1 , further comprising:

in response to the ranking, generating, by the network device, the channel associated with the transmitter port and the reception port to modify a transmission signal associated with the transmitter port.

3. The method of claim 2 , further comprising:

based on the transmission signal, estimating, by the network device, an interference signal at the reception port, resulting in an estimated signal.

4. The method of claim 3 , further comprising:

subtracting, by the network device, the estimated signal from the first ranked interference signal, resulting in an error signal.

5. The method of claim 4 , further comprising:

based on the error signal, canceling, by the network device, the signal interference associated with the reception port.

6. The method of claim 4 , wherein the estimated signal is a first estimated signal, and further comprising:

utilizing, by the network device, the error signal to determine a second estimated signal.

7. The method of claim 6 , further comprising:

based on the error signal and the second estimated signal, modifying, by the network device, a third estimated signal.

8. The method of claim 1 , further comprising:

generating a second ranked interference signal in accordance with a limit on physical resource block utilization of the wireless network.

9. A system, comprising:

a processor; and

a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:

determining a first signal interference associated with a first signal received by a receiver device;

determining an interference product as a function of the first signal interference;

based on the interference product, generating rank data representative of a rank of the first signal interference, and applying the rank data to the first signal interference to generate a ranked interference signal;

based on the rank data, generating a second signal interference; and

utilizing a channel associated with a transmitter device and the receiver device to facilitate modification of a second signal to be sent from the transmitter device to the receiver device.

10. The system of claim 9 , wherein the operations further comprise:

estimating the second signal interference, associated with the second signal, resulting in an estimated signal.

11. The system of claim 10 , wherein the operations further comprise:

subtracting a first value associated with the estimated signal from a second value associated with the ranked interference signal, resulting in an error signal.

12. The system of claim 11 , wherein the operations further comprise:

based on the error signal, canceling the second signal interference associated with the second signal.

13. The system of claim 12 , wherein the operations further comprise:

routing the second signal to a canceler device associated with the receiver device, to cancel a third signal interference.

14. The system of claim 12 , wherein the estimated signal is a first estimated signal, and wherein the operations further comprise:

in response to the canceling the second signal interference, determining a second estimated signal.

15. A non-transitory machine-readable storage medium, comprising executable instructions that, when executed by a processor, facilitate performance of operations, comprising:

receiving first signal data related to a transmission signal from a transmission port device to a reception port device, wherein a first signal interference associated with the transmission signal is determined to be present at the reception port device;

based on determining an interference product associated with the first signal interference, ranking the interference product, resulting in rank data;

based on a result of ranking the signal interference in accordance with the rank data, generating a ranked interference signal;

based on the rank data, generating a second signal interference; and

utilizing a channel associated with the transmission port device and the reception port device to facilitate modification of a second signal to be sent from the transmission port device to the reception port device.

16. The non-transitory machine-readable storage medium of claim 15 , wherein the transmission signal is a first transmission signal, and wherein the operations further comprise:

generating the channel associated with the transmission port device and the reception port device to modify a second transmission signal from the transmission port device to the reception port device.

17. The non-transitory machine-readable storage medium of claim 16 , wherein the signal interference is first signal interference, and wherein the operation further comprise:

based on the second transmission signal, estimating the second signal interference experienced by the reception port device do to the second transmission signal.

18. The non-transitory machine-readable storage medium of claim 17 , wherein the operations further comprise:

reducing a first value associated with the ranked interference signal by a second value associated with the second signal interference, resulting in a third value associated with an error signal.

19. The non-transitory machine-readable storage medium of claim 18 , wherein the operations further comprise:

utilizing the third value to determine a third signal interference of a third signal.

20. The non-transitory machine-readable storage medium of claim 15 , wherein the ranking the signal interference comprises ranking the signal interference in accordance with a constraint on utilization of a physical resource block of a wireless network.

Assignments (3)
CORRECTIVE ASSIGNMENT TO CORRECT THE EXECUTION DATE OF ASSIGNOR ERNEST TSUI PREVIOUSLY RECORDED ON REEL 047786 FRAME 0959. ASSIGNOR(S) HEREBY CONFIRMS THE CONFIRMATORY ASSIGNMENT. Recorded Dec 17, 2018
From: TSUI, ERNEST; MAXWELL, PAUL; YE, WEIHUA
To: AT&T INTELLECTUAL PROPERTY I, L.P.
Reel/Frame 047936/0744 →
CONFIRMATORY ASSIGNMENT Recorded Nov 26, 2018
From: TSUI, ERNEST; MAXWELL, PAUL; YE, WEIHUA
To: AT&T INTELLECTUAL PROPERTY I, L.P.
Reel/Frame 047786/0959 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 2, 2018
From: TSUI, ERNEST; MAXWELL, PAUL; YE, WEIHUA
To: AT&T INTELLECTUAL PROPERTY I, L.P.
Reel/Frame 044811/0358 →
Cited By (1)
US 12,225,426