Method and apparatus for signal interference avoidance

• US 10,667,275 B2
• Filed: 07/17/2018
• Issued: 05/26/2020
• 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, Myers, Bill
• Primary Examiner(s): Jagannathan, Melanie
• Application Number:
  US16/036,991
• Publication Number:
  US 20180324812A1
• Time in Patent Office: 679 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

Aspects of the subject disclosure may include, for example, detecting an interferer having a periodic time of recurrence and a periodic spectral frequency range, identifying a spectral segment of a plurality of spectral segments of a wideband radio system having a time of occurrence and an operating frequency range that overlaps with the periodic time of recurrence and the periodic spectral frequency range of the interferer, identifying a communication device utilizing the spectral segment for transmitting data in accordance with a segment schedule assigned to the communication device, and generating an updated segment schedule by modifying the segment schedule of the communication device to avoid utilizing an affected portion of the spectral segment during the periodic time of recurrence and the periodic spectral frequency range of the interferer. Other embodiments are disclosed.

Claims

1. A method, comprising:

identifying, by a system comprising a processor, a resource block of a plurality of resource blocks coincident with a periodic time of recurrence of an interferer, resulting in an affected resource block; and

generating, by the system, an updated resource block schedule by modifying a resource block schedule of a mobile device, wherein the updated resource block schedule avoids utilizing at least a portion of the affected resource block during the periodic time of recurrence of the interferer;

wherein the generating of the updated resource block schedule comprises;

adjusting assignment via time shifting of at least a portion of the plurality of resource blocks to generate an updated time of occurrence of the affected resource block to reduce or eliminate an overlap with the periodic time of recurrence of the interferer; and

generating the updated resource block schedule according to the time shifting;

or

detecting that the interferer has a periodic spectral frequency range;

adjusting assignment via frequency shifting of at least a portion of the plurality of resource blocks to generate an updated spectral operating frequency range of the affected resource block to reduce or eliminate an overlap in frequency with the periodic spectral frequency range of the interferer; and

generating the updated resource block schedule according to the frequency shifting.

2. The method of claim 1, wherein an affected portion of the affected resource block comprises a first sub-carrier of the affected resource block, and wherein the updated resource block schedule directs the mobile device to avoid utilizing the first sub-carrier for transmitting data.

3. The method of claim 2, wherein a second sub-carrier of the affected resource block is not in the affected portion of the affected resource block, and wherein the updated resource block schedule directs the mobile device to utilize the second sub-carrier for transmitting data.

4. The method of claim 1, wherein the affected resource block has other time of occurrences that are not coincident with the periodic time of recurrence of the interferer, and wherein the updated resource block schedule directs the mobile device to utilize the affected resource block during at least one of the other time of occurrences.

5. The method of claim 1, wherein the system comprises a base station.

6. The method of claim 1, wherein the updated resource block schedule is generated responsive to detecting that the affected resource block is being used by the mobile device for voice traffic.

7. The method of claim 1, further comprising:

measuring a plurality of power levels of at least another portion of the plurality of resource blocks resulting in power measurements;

determining at least one baseline power level from at least a portion of the power measurements; and

determining a threshold from the at least one baseline power level for detecting the interferer.

8. The method of claim 1, further comprising providing a report including timing data or frequency data associated with the interferer.

9. The method of claim 1, further comprising transmitting, by the system, the updated resource block schedule to the mobile device.

10. The method of claim 9, wherein:

the mobile device comprises a cellular communication device; and

interference information associated with the interferer is stored and organized in a database according to time stamps, an identity of a base station collecting the interference information, an identity of the mobile device, and an identity of the interferer synthesized from spectral information.

11. A machine-readable storage device comprising instructions which, when executed by a processor, cause the processor to perform operations, the operations comprising:

identifying a spectral segment of a plurality of spectral segments that has an overlap with an interferer, wherein the overlap comprises overlapping with a periodic time of recurrence of the interferer and overlapping with a periodic spectral frequency range of the interferer, and wherein the identifying results in an affected spectral segment; and

modifying a segment schedule resulting in an updated segment schedule utilized by a communication device, wherein the modifying the segment schedule avoids using at least a portion of the affected spectral segment during the periodic time of recurrence of the interferer or in the periodic spectral frequency range of the interferer;

wherein the modifying the segment schedule comprises;

adjusting assignment via time shifting of at least a portion of the plurality of spectral segments to generate an updated time of occurrence of the affected spectral segment to reduce or eliminate an overlap with the periodic time of recurrence of the interferer; and

modifying the segment schedule according to the time shifting;

or

adjusting assignment via frequency shifting of at least a portion of the plurality of spectral segments to generate an updated operating frequency range of the affected spectral segment to reduce or eliminate an overlap in frequency with the periodic spectral frequency range of the interferer; and

modifying the segment schedule according to the frequency shifting.

12. The machine-readable storage device of claim 11, wherein the spectral segment has other time of occurrences that are not coincident with the periodic time of recurrence of the interferer, and wherein the updated segment schedule directs the communication device to utilize the spectral segment during at least one of the other time of occurrences.

13. The machine-readable storage device of claim 11, wherein the segment schedule is modified responsive to detecting that the affected spectral segment is being used at least in part for voice traffic.

14. The machine-readable storage device of claim 11, wherein the processor is in a base station.

15. The machine-readable storage device of claim 11, wherein the communication device utilizes the affected spectral segment for transmitting data.

16. The machine-readable storage device of claim 11, wherein the communication device utilizes the affected spectral segment for transmitting voice traffic.

17. A communication device, comprising:

a processor; and

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

identifying a spectral segment of a plurality of spectral segments that has a time of occurrence that overlaps with a periodic time of recurrence of an interferer and an operating frequency range that overlaps with a periodic spectral frequency range of the interferer, wherein the identifying results in an affected spectral segment; and

transmitting a message requesting an updated segment schedule to avoid utilizing at least a portion of the affected spectral segment during the periodic time of recurrence of the interferer or in the periodic spectral frequency range of the interferer;

wherein the updated segment schedule is generated by;

adjusting assignment via time shifting of at least a portion of the plurality of spectral segments to generate an updated time of occurrence of the affected spectral segment to reduce or eliminate an overlap with the periodic time of recurrence of the interferer; and

modifying a segment schedule, assigned to the communication device, according to the time shifting;

or

adjusting assignment via frequency shifting of at least a portion of the plurality of spectral segments to generate an updated operating frequency range of the affected spectral segment to reduce or eliminate an overlap in frequency with the periodic spectral frequency range of the interferer; and

modifying a segment schedule, assigned to the communication device, according to the frequency shifting.

18. The communication device of claim 17, wherein:

the operations further comprise receiving the updated segment schedule;

the operations further comprise utilizing the updated segment schedule to transmit data to avoid at least the portion of the affected spectral segment;

the communication device comprises a portable cellular communication device; and

the communication device suggests a mitigation strategy to a base station.

19. The communication device of claim 18, wherein:

the mitigation strategy comprises a time shift strategy, a frequency shift strategy, or both; and

the base station accepts the mitigation strategy.

20. The communication device of claim 18, wherein:

the mitigation strategy comprises a time shift strategy, a frequency shift strategy, or both; and

the base station rejects the mitigation strategy with an alternate strategy.