Method and apparatus for signal interference processing

• US 9,209,857 B2
• Filed: 10/01/2013
• Issued: 12/08/2015
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: ISCO International Inc.
• Original Assignee: ISCO International Inc.
• Inventors: Galeev, Mikhail, Abdelmonem, Amr, Seskiewicz, Dariusz, Wang, Zhigang
• Primary Examiner(s): Nguyen, Phuongchau Ba
• Application Number:
  US14/043,782
• Publication Number:
  US 20140269545A1
• Time in Patent Office: 798 Days
• Field of Search: 370/329, 370/352, 379/243, 455/452.2, 455/509, 709/224, 709/226, 718/105
• US Class Current: 1/1
• 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, obtaining a schedule of transmission segments in an uplink of a communication system, determining a threshold for detecting signal interference in at least one transmission segment of a plurality of transmission segments according to the schedule of transmission segments in the uplink, and detecting signal interference in the at least one transmission segment of the plurality of transmission segments according to the threshold.

Claims

1. A method, comprising:

obtaining, by a system comprising a processor, a schedule of resource blocks in an uplink of a communication system;

determining, by the system, at least one threshold for detecting signal interference in a plurality of resource blocks according to the schedule of resource blocks in the uplink;

detecting, by the system, signal interference in a first resource block of the plurality of resource blocks according to the at least one threshold;

detecting, by the system, additional signal interference in other resource blocks of the plurality of resource blocks;

detecting, by the system, that a number of signal interferers exceeds a number of filters of a plurality of filters for suppressing at least a portion of signal interference; and

prioritizing, by the system, use of the plurality of filters to filter signal interference in at least one of the first resource block, the other resource blocks, or any combination thereof.

2. The method of claim 1, further comprising suppressing at least a portion of the signal interference detected.

3. The method of claim 1, wherein obtaining the schedule of resource blocks in the uplink comprises monitoring a control channel including information associated with the schedule of resource blocks in the uplink assigned to a communication device of the communication system.

4. The method of claim 3, wherein the control channel is monitored wirelessly.

5. The method of claim 1, wherein obtaining the schedule of resource blocks in the uplink comprises receiving the schedule of resource blocks from a base station.

6. The method of claim 1, wherein obtaining the schedule of resource blocks in the uplink further comprises obtaining synchronization information to determine when a communication device of the communication system will transmit signals according to the schedule of resource blocks in the uplink.

7. The method of claim 1, further comprising determining a traffic load of signals transmitted by at least one communication device of the communication system according to the schedule of resource blocks in the uplink, wherein determining the at least one threshold comprises determining the least one threshold according to the traffic load.

8. The method of claim 7, wherein determining the at least one threshold comprises:

determining at least one baseline power level according to the traffic load; and

determining the at least one threshold from the at least one baseline power level.

9. The method of claim 1, comprising:

detecting, by the system, that the first resource block includes voice traffic;

performing, by the system, a first quality of service measure of the first resource block responsive to detecting the signal interference;

comparing, by the system, the first quality of service measure to a desired quality of service measure for voice traffic to obtain a comparison;

determining, by the system, from the comparison that the first resource block is not suitable for voice traffic; and

redirecting, by the system, the voice traffic to a second resource block of the plurality of resource blocks responsive to determining that the first resource block is not suitable for voice traffic.

10. The method of claim 1, wherein determining the at least one threshold comprises:

measuring a plurality of power levels of the plurality of resource blocks according to the schedule of resource blocks in the uplink, wherein the plurality of power levels does not include one or more resource blocks of the plurality of resource blocks which have no communication traffic in accordance with the schedule of resource blocks;

determining at least one baseline power level from the plurality of power levels; and

determining the at least one threshold from the at least one baseline power level.

11. A machine-readable storage device, comprising instructions, which when executed by a processor, facilitates a performance of operations comprising:

obtaining a schedule of transmission segments in an uplink of a communication system;

determining a threshold for detecting signal interference in at least one transmission segment of a plurality of transmission segments according to the schedule of transmission segments in the uplink;

detecting signal interference in the at least one transmission segment of the plurality of transmission segments according to the threshold;

detecting additional signal interference in other transmission segments of the plurality of transmission segments according to other thresholds determined for the other transmission segments according to the schedule of transmission segments;

detecting that a number of signal interferers exceeds a number of filters of a plurality of filters for suppressing at least a portion of signal interference; and

prioritizing use of the plurality of filters to filter signal interference in at least one of the other transmission segments.

12. The machine-readable storage device of claim 11, wherein obtaining the schedule of transmission segments in the uplink comprises monitoring a control channel.

13. The machine-readable storage device of claim 11, wherein obtaining the schedule of transmission segments in the uplink comprises receiving the schedule of transmission segments from a network element of the communication system.

14. The machine-readable storage device of claim 11, wherein obtaining the schedule of transmission segments in the uplink further comprises obtaining synchronization information to determine when a communication device of the communication system will transmit signals according to the schedule of transmission segments in the uplink.

15. The machine-readable storage device of claim 11, wherein the operations further comprise determining a traffic load of signals transmitted by at least one communication device of the communication system according to the schedule of transmission segments in the uplink, wherein determining the threshold comprises determining the threshold according to the traffic load.

16. A communication device, comprising:

a memory to store instructions; and

a processor coupled to the memory, wherein execution of the instructions by the processor facilitates a performance of operations comprising;

obtaining a schedule of transmission segments in a communication link of a communication system;

detecting signal interference in a first transmission segment of a plurality of transmission segments according to the schedule of transmission segments and at least one threshold for detecting interference;

detecting additional signal interference in other transmission segments of the plurality of transmission segments according to other thresholds determined for the other transmission segments according to the schedule of transmission segments;

detecting that a number of signal interferers exceeds a number of filters of a plurality of filters for suppressing at least a portion of signal interference; and

prioritizing use of the plurality of filters to filter signal interference in at least one of the other transmission segments.

17. The communication device of claim 16, wherein each transmission segment of the plurality of transmission segments conforms to a long term evolution (LTE) protocol.

18. The communication device of claim 16, wherein obtaining the schedule of transmission segments in the communication link comprises one of monitoring a control channel, receiving the schedule of transmission segments from a network element of the communication system, obtaining synchronization information to determine when a communication device of the communication system will transmit signals according to the schedule of transmission segments in the communication link, or any combination thereof.