# US 2021/0345353 A1 · Method and apparatus for interference mitigation utilizing antenna pattern adjustments

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- Number: US 2021/0345353 A1
- Document ID: US20210345353A1
- Status: Published application
- Kind: A1
- Application number: 17/341,748
- Filed: 2021-06-08
- Published: 2021-11-04
- Earliest claimed: 2013-03-15
- Assignees: ISCO International, LLC
- Applicants: ISCO International, LLC
- Inventors: Amr Abdelmonem; Mikhail Galeev; Dariusz Seskiewicz
- Web page: https://patentgrep.com/patent/US20210345353A1

## CPC

- H04W 72/541: using the level of interference
- H04B 1/1036: {with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters (H04B1/123 takes precedence; filter circuits H03H)}
- H04B 1/709: Correlator structure
- H04B 1/71: the interference being narrowband interference
- H04B 1/7103: the interference being multiple access interference
- H04B 15/00: Suppression or limitation of noise or interference (by means associated with receiver H04B1/10)
- H04B 17/00: Monitoring; Testing (of line transmission systems H04B3/46; arrangements for monitoring or testing transmission systems employing electromagnetic waves other than radio waves H04B10/07)
- H04B 17/21: for calibration; for correcting measurements
- H04B 17/26: using historical data, averaging values or statistics
- H04B 17/318: Received signal strength
- H04B 17/327: Received signal code power [RSCP]
- H04B 17/345: Interference values ({signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]} H04B17/336)
- H04B 17/373: Predicting channel quality {or other radio frequency [RF]} parameters
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 5/0026: {Division using four or more dimensions, e.g. beam steering or quasi-co-location [QCL]}
- H04L 5/0032: {Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation}
- H04L 5/0073: {Allocation arrangements that take into account other cell interferences}
- H04L 41/069: using logs of notifications; Post-processing of notifications
- H04W 4/02: Services making use of location information
- H04W 4/023: {using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds}
- H04W 4/029: Location-based management or tracking services
- H04W 16/28: using beam steering
- H04W 24/02: Arrangements for optimising operational condition
- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 28/0236: {radio quality, e.g. interference, losses or delay}
- H04W 28/04: Error control
- H04W 40/16: based on interference
- H04W 52/04: Transmission power control [TPC]
- H04W 52/14: Separate analysis of uplink or downlink
- H04W 52/243: {taking into account interferences}
- H04W 64/00: Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management
- H04W 64/006: {with additional information processing, e.g. for direction or speed determination}
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/52: based on load
- H04W 72/54: based on quality criteria
- H04W 72/542: using measured or perceived quality
- H04B 7/2634: {for channel frequency control}
- H04B 2201/709709: Methods of preventing interference
- H04B 2201/709745: Iterative interference mitigation schemes
- H04J 11/0066: {of narrowband interference (narrowband interference reduction H04B1/1036)}
- H04L 5/006: {Quality of the received signal, e.g. BER, SNR, water filling}
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S)

## Abstract

A system that incorporates the subject disclosure may perform, for example, a method for receiving interference information, identifying a plurality of interferers, approximating a location of the plurality of interferers, and adjusting an antenna pattern of an antenna. The method can include determining traffic loads and adjusting the antenna pattern according to the traffic loads. Other embodiments are disclosed.

## Claims

### Claim 1

A method, comprising:
receiving, at a base station including a processing system having a processor, a plurality of orthogonal frequency division multiplexing (OFDM) signals from a plurality of mobile communication devices, wherein the plurality of OFDM signals include a plurality of different frequencies;
determining, by the processing system, interference information of an interferer, wherein the determining the interference information comprises averaging power measurements at each of the plurality of different frequencies over time;
reporting, by the processing system, the interference information to a diagnostic system; and
receiving from the diagnostic system, by the processing system, instructions to adjust an antenna pattern of a first antenna of the base station to reduce interference by the interferer.

### Claim 2 (depends on 1)

The method of claim 1, wherein the determining the interference information of the interferer further comprises determining a threshold from average power measurements and comparing the threshold to individual power measurements.

### Claim 3 (depends on 1)

The method of claim 1, further comprising adjusting the antenna pattern of the first antenna to change a first coverage area of the first antenna to obtain an adjusted first coverage area that is smaller than the first coverage area.

### Claim 4 (depends on 3)

The method of claim 3, wherein the adjusting the antenna pattern comprises adjusting the antenna pattern to result in the interferer being located at least in part outside of the adjusted first coverage area of the first antenna.

### Claim 5 (depends on 3)

The method of claim 3, wherein the adjusting the antenna pattern causes a change to a location of the interferer relative to a boundary of the adjusted first coverage area that reduces interference caused by the interferer.

### Claim 6 (depends on 3)

The method of claim 3, wherein the adjusting the antenna pattern comprises adjusting the antenna pattern to result in the interferer being located closer to a boundary of the adjusted first coverage area.

### Claim 7 (depends on 3)

The method of claim 3, wherein the adjusting the antenna pattern comprises adjusting the antenna pattern to cause a location of the interferer to remain within the adjusted first coverage area.

### Claim 8 (depends on 3)

The method of claim 3, wherein the adjusting the antenna pattern comprises one or more of a rotation of the first antenna, a tilting of the first antenna, a power adjustment at the first antenna, beam steering at the first antenna, and combinations thereof.

### Claim 9

A non-transitory, machine-readable storage medium, comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations, the operations comprising:
receiving, at a base station, a plurality of orthogonal frequency division multiplexing (OFDM) signals from a plurality of mobile communication devices, wherein the plurality of OFDM signals include a plurality of different frequencies;
determining interference information of an interferer, wherein the determining the interference information comprises averaging power measurements at each of the plurality of different frequencies over time;
reporting the interference information to a diagnostic system; and
receiving, from the diagnostic system, instructions to adjust an antenna pattern of a first antenna of the base station to reduce interference by the interferer.

### Claim 10 (depends on 9)

The non-transitory, machine-readable storage medium of claim 9, wherein the determining the interference information of the interferer further comprises determining a threshold from average power measurements and comparing the threshold to individual power measurements.

### Claim 11 (depends on 9)

The non-transitory, machine-readable storage medium of claim 9, further comprising adjusting the antenna pattern of the first antenna to change a first coverage area of the first antenna to obtain an adjusted first coverage area that is smaller than the first coverage area.

### Claim 12 (depends on 11)

The non-transitory, machine-readable storage medium of claim 11, wherein the adjusting the antenna pattern comprises adjusting the antenna pattern to result in the interferer being located at least in part outside of the adjusted first coverage area of the first antenna.

### Claim 13 (depends on 11)

The non-transitory, machine-readable storage medium of claim 11, wherein the adjusting the antenna pattern causes a change to a location of the interferer relative to a boundary of the adjusted first coverage area that reduces interference caused by the interferer.

### Claim 14 (depends on 11)

The non-transitory, machine-readable storage medium of claim 11, wherein the adjusting the antenna pattern comprises adjusting the antenna pattern to result in the interferer being located closer to a boundary of the adjusted first coverage area.

### Claim 15 (depends on 11)

The non-transitory, machine-readable storage medium of claim 11, wherein the adjusting the antenna pattern comprises adjusting the antenna pattern to cause a location of the interferer to remain within the adjusted first coverage area.

### Claim 16 (depends on 11)

The non-transitory, machine-readable storage medium of claim 11, wherein the adjusting the antenna pattern comprises one or more of a rotation of the first antenna, a tilting of the first antenna, a power adjustment at the first antenna, beam steering at the first antenna, and combinations thereof.

### Claim 17

A base station, comprising:
a processing system including a processor; and
a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations comprising:
receiving a plurality of orthogonal frequency division multiplexing (OFDM) signals from a plurality of mobile communication devices, wherein the plurality of OFDM signals include at a plurality of different frequencies;
determining interference information of an interferer, wherein the determining the interference information comprises averaging power measurements at each of the plurality of different frequencies over time;
reporting the interference information to a diagnostic system; and
receiving, from the diagnostic system, instructions to adjust an antenna pattern of a first antenna of the base station to reduce interference by the interferer.

### Claim 18 (depends on 17)

The base station of claim 17, further comprising adjusting the antenna pattern of the first antenna to change a first coverage area of the first antenna to obtain an adjusted first coverage area that is smaller than the first coverage area.

### Claim 19 (depends on 18)

The base station of claim 18, wherein the adjusting the antenna pattern comprises adjusting the antenna pattern to result in the interferer being located at least in part outside of the adjusted first coverage area of the first antenna.

### Claim 20 (depends on 18)

The base station of claim 18, wherein the adjusting the antenna pattern causes a change to a location of the interferer relative to a boundary of the adjusted first coverage area that reduces interference caused by the interferer.