Method and apparatus for interference mitigation utilizing antenna pattern adjustments

• US 10,652,903 B2
• Filed: 10/15/2018
• Issued: 05/12/2020
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: ISCO International Inc.
• Original Assignee: ISCO International LLC
• Inventors: Abdelmonem, Amr, Galeev, Mikhail, Seskiewicz, Dariusz
• Primary Examiner(s): Tacsik, Ernest G
• Application Number:
  US16/159,858
• Publication Number:
  US 20190053247A1
• Time in Patent Office: 575 Days
• CPC Class Codes: 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
• CPC Class Codes: H04B 1/709 Correlator structure
• CPC Class Codes: H04B 1/71 the interference being narrowband interference
• CPC Class Codes: H04B 1/7103 the interference being multiple access interference
• CPC Class Codes: H04B 15/00 Suppression or limitation of noise or interference by means associated with receiver H04B1/10
• CPC Class Codes: 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
• CPC Class Codes: H04B 17/21 for calibration; for correcting measurements
• CPC Class Codes: H04B 17/26 using historical data, averaging values or statistics
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04B 17/327 Received signal code power [RSCP]
• CPC Class Codes: H04B 17/345 Interference values signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] H04B17/336
• CPC Class Codes: H04B 17/373 Predicting channel quality or other radio frequency [RF] parameters
• CPC Class Codes: H04B 2201/709709 Methods of preventing interference
• CPC Class Codes: H04B 2201/709745 Iterative interference mitigation schemes
• CPC Class Codes: H04B 7/2634 for channel frequency control
• CPC Class Codes: H04J 11/0066 of narrowband interference narrowband interference reduction H04B1/1036
• CPC Class Codes: H04L 41/069 using logs of notifications; Post-processing of notifications
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0026 Division using four or more dimensions
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04L 5/006 : Quality of the received signal, e.g. BER, SNR, water filling
• CPC Class Codes: H04L 5/0073 : Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 16/28 : using beam steering
• CPC Class Codes: H04W 24/02 : Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/08 : Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 24/10 : Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/0236 : radio quality, e.g. interference, losses or delay
• CPC Class Codes: H04W 28/04 : Error control
• CPC Class Codes: H04W 4/02 : Services making use of location information
• CPC Class Codes: H04W 4/023 : using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• CPC Class Codes: H04W 4/029 : Location-based management or tracking services
• CPC Class Codes: H04W 40/16 : based on interference
• CPC Class Codes: H04W 52/04 : TPC
• CPC Class Codes: H04W 52/14 : Separate analysis of uplink or downlink
• CPC Class Codes: H04W 52/243 : taking into account interferences
• CPC Class Codes: H04W 64/00 : Locating users or terminals or network equipment for network management purposes, e.g. mobility management
• CPC Class Codes: H04W 64/006 : with additional information processing, e.g. for direction or speed determination
• CPC Class Codes: H04W 72/0446 : Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 : Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/52 : based on load
• CPC Class Codes: H04W 72/54 : based on quality criteria
• CPC Class Codes: H04W 72/541 : using the level of interference
• CPC Class Codes: H04W 72/542 : using measured or perceived quality

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

1. A method, comprising:

obtaining, by a processing system comprising a processor, interference information affecting a plurality of base stations, wherein the interference information is obtained from a plurality of mobile communication devices in communication with the plurality of base stations, wherein the plurality of base stations is subject to interference caused by an interferer of a plurality of interferers external to the plurality of base stations, wherein the plurality of mobile communication devices filter the interference information according to an adaptive threshold to detect signal interference in a plurality of spectral segments in a radio frequency spectrum of a wireless communication system;

correlating, by the processing system, the interference information obtained from the plurality of mobile communication devices to generate correlated information;

determining, by the processing system, an interferer location of an interferer of the plurality of interferers according to the correlated information;

predicting, by the processing system, recurrent interference caused by the interferer of the plurality of interferers; and

adjusting, by the processing system, a first antenna pattern of a first antenna of a first base station of the plurality of base stations to reduce interference by the interferer of the plurality of interferers based on a first traffic load associated with the first base station.

2. The method of claim 1, wherein the adjusting of the first antenna pattern further comprises changing a first coverage area of the first antenna to obtain an adjusted first coverage area that is smaller than the first coverage area, and

wherein the adjusting of the first antenna pattern results in the interferer of the plurality of interferers being located at least in part outside of the adjusted first coverage area of the first antenna.

3. The method of claim 1, wherein the adjusting of the first antenna pattern causes one or more mobile communication devices of the plurality of mobile communication devices to change from utilizing the first base station to utilizing a second base station for communication services.

4. The method of claim 3, further comprising determining, by the processing system, the first traffic load associated with the first base station and a second traffic load associated with the second base station, wherein the adjusting of the first antenna pattern is based on the first traffic load and the second traffic load, and wherein the adjusting of the first antenna pattern causes an increase in the second traffic load at the second base station.

5. The method of claim 4, further comprising:

adjusting, by the processing system, a second antenna pattern of a second antenna of the second base station based on a determined location of another interferer of the plurality of interferers, wherein the adjusting of the second antenna pattern changes a second coverage area of the second antenna to an adjusted second coverage area,

wherein the adjusting of the second antenna pattern results in the another interferer of the plurality of interferers being located at least in part outside of the adjusted second coverage area of the second antenna.

6. The method of claim 1, wherein the adjusting of the first antenna pattern causes a decrease in the first traffic load at the first base station.

7. The method of claim 1, further comprising:

receiving, by the processing system, device location information for each of a plurality of communication devices,

wherein the adjusting of the first antenna pattern is further based on the device location information.

8. The method of claim 1, wherein the recurrent interference caused by the interferer of the plurality of interferers is determined by detecting a temporal recurrence of the interferer according to a spectral profile associated with the interferer of the plurality of interferers.

9. The method of claim 1, wherein the correlating further comprises:

determining, by the processing system, temporal recurrences of the plurality of interferers;

estimating, by the processing system, a location of each interferer of the plurality of interferers; and

generating, by the processing system, an interference map of the plurality of interferers according to the temporal recurrences and the estimating of the location of each interferer of the plurality of interferers.

10. A machine-readable storage medium, comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations, the operations comprising:

obtaining interference information affecting a plurality of antenna locations from a plurality of mobile communication devices, wherein the plurality of antenna locations is subject to interference caused by an interferer of a plurality of interferers external to the plurality of antenna locations, wherein the plurality of mobile communication devices filter the interference information according to an adaptive threshold to detect signal interference in a plurality of spectral segments in a radio frequency spectrum of a wireless communication system;

correlating the interference information obtained from the plurality of mobile communication devices to generate correlated information;

determining an estimated interferer location of an interferer of the plurality of interferers according to the correlated information;

generating an interference map for the interfere of the plurality of interferers according to the estimated interferer location; and

adjusting a first antenna pattern of a first antenna at a first location of the plurality of antenna locations according to instances of recurrent interference on the interference map and based on a first traffic load associated with the first antenna to change a first coverage area of the first antenna to an adjusted first coverage area that is smaller than the first coverage area.

11. The machine-readable storage medium of claim 10, wherein the adjusting of the first antenna pattern causes a communication device to change from utilizing the first antenna to utilizing a second antenna at a second location of the plurality of antenna locations for accessing communication services.

12. The machine-readable storage medium of claim 11, wherein the interference information is determined according to signal interference occurring in the plurality of spectral segments of the wireless communication system,

wherein the first antenna is coupled to a first base station, wherein the second antenna is coupled to a second base station, and

wherein each spectral segment of the plurality of spectral segments is utilized for communications conforming to a long term evolution protocol.

13. The machine-readable storage medium of claim 12, wherein the adjusting of the first antenna pattern causes a decrease in the first traffic load at the first antenna,

wherein the adjusting of the first antenna pattern results in a detected interferer being located at least in part outside of the adjusted first coverage area of the first antenna, and

wherein the operations further comprise determining the first traffic load associated with the first antenna and a second traffic load associated with the second antenna, wherein the adjusting of the first antenna pattern is based on the first and second traffic loads.

14. The machine-readable storage medium of claim 12, wherein the operations further comprise:

adjusting a second antenna pattern of a second antenna of the plurality of antenna locations based on the interference map,

wherein the adjusting of the second antenna pattern changes a second coverage area of the second antenna to an adjusted second coverage area,

wherein the adjusting of the second antenna pattern results in an interferer of the plurality of interferers to be located at least in part outside of the adjusted second coverage area of the second antenna, and

wherein the adjusting of the first antenna pattern causes an increase in a second traffic load associated with the second antenna.

15. The machine-readable storage medium of claim 10, wherein the obtaining of the interference information further comprises receiving the interference information from the plurality of mobile communication devices that are generating the interference information according to interference detected in the plurality of spectral segments of the wireless communication system, and wherein the operations further comprise:

correlating the interference information of the plurality of mobile communication devices to generate correlated information; and

detecting the plurality of interferers according to the correlated information, wherein the generating of the interference map is based on the correlated information.

16. The machine-readable storage medium of claim 10, wherein the operations further comprise:

determining temporal recurrences of the plurality of interferers; and

estimating a location of each of the plurality of interferers,

wherein the generating of the interference map is based on the temporal recurrences and the estimating of the location of each of the plurality of interferers.

17. An antenna system, 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 interference information from a plurality of mobile communication devices for a plurality of interferers, wherein the plurality of mobile communication devices filter the interference information according to an adaptive threshold to detect signal interference in a plurality of spectral segments in a radio frequency spectrum of a wireless communication system;

determining, in accordance with the interference information, recurrent interference caused by an identified interferer of the plurality of interferers;

correlating the interference information obtained from the plurality of mobile communication devices to generate correlated information;

determining an approximate location of the identified interferer of the plurality of interferers according to the correlated information; and

adjusting an antenna pattern to place the identified interferer to be partially outside of an adjusted coverage area of the antenna pattern as an adjusted antenna pattern based on the approximate location of the identified interferer of the plurality of interferers based on a traffic load responsive to the determining that the identified interferer is located partially inside of a coverage area of the antenna pattern.

18. The antenna system of claim 17, wherein the adjusting of the antenna pattern comprises one or more of a rotation of an antenna of the antenna system, a tilting of the antenna, a power adjustment at the antenna, beam steering at the antenna, and combinations thereof.

19. The antenna system of claim 17, wherein the operations further comprise:

sending instructions to an associated antenna system to adjust a second antenna pattern of the associated antenna system based on the approximate location of the plurality of interferers,

wherein the associated antenna system adjusts a second coverage area of an associated antenna of the associated antenna system to an adjusted associated coverage area to place an interferer of the plurality of interferers to be partially outside of the adjusted associated coverage area of the associated antenna system.

20. The antenna system of claim 19, wherein the operations further comprise:

determining the traffic load associated with the antenna system and a second traffic load associated with the associated antenna system,

wherein the adjusting of the antenna pattern is based on the traffic load and the second traffic load, and

wherein the adjusting of the antenna pattern is performed to increase the second traffic load at the associated antenna system.