Method and apparatus for increasing performance of communication links of cooperative communication nodes

• US 9,775,116 B2
• Filed: 04/20/2015
• Issued: 09/26/2017
• Est. Priority Date: 05/05/2014
• Status: Active Grant

• Current Assignee: ISCO International Inc.
• Original Assignee: ISCO International Inc.
• Inventors: Abdelmonem, Amr, Seoane, Jorge, Galeev, Mikhail, Komoravolu, Krishna, Wang, Zhigang, Reichard, Jr., Gordon
• Primary Examiner(s): Onamuti, Gbemileke J
• Application Number:
  US14/690,765
• Publication Number:
  US 20150318964A1
• Time in Patent Office: 890 Days
• CPC Class Codes: H04J 11/005 of intercell interference
• CPC Class Codes: H04J 11/0066 of narrowband interference narrowband interference reduction H04B1/1036
• CPC Class Codes: H04L 5/0021 in which codes are applied as a frequency-domain sequences, e.g. MC-CDMA
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• 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 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 52/241 taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A system that incorporates aspects of the subject disclosure may perform operations including, for example, monitoring performance parameters in a communications network, identifying a degradation in performance of one or more nodes of the communications network according the monitored performance parameters, and initiating corrective action to mitigate the degradation in performance of the one or more nodes of the communications network. Other embodiments are disclosed.

Claims

1. A method, comprising:

obtaining, by a first cell site of a plurality of cell sites, a plurality of Signal to Interference plus Noise Ratio (SINR) measurements for a plurality of sectors or a plurality of paths,

wherein each of the SINR measurements represents a ratio of a first power level of a received communication signal to a second power level comprising a sum of an interference component and a noise component, the communication signal comprising a radio frequency (RF) signal in a frequency band, the interference component comprising a signal in the frequency band from a source other than the plurality of cell sites;

initiating, by the first cell site, corrective action to improve a SINR measurement of an affected sector of the plurality of sectors or an affected path of the plurality of paths falling below a first SINR threshold; and

determining, by the first cell site, whether the corrective action has affected one or more SINR measurements of a second cell site of the plurality of cell sites, wherein a first coverage area of the first cell site is in proximity to a second coverage area of the second cell site.

2. The method of claim 1, further comprising reversing at least in part, by the first cell site, the corrective action responsive to determining that the corrective action has not improved the SINR measurement of the affected sector or the affected path.

3. The method of claim 1, further comprising reversing at least in part, by the first cell site, the corrective action responsive to determining that the corrective action has reduced the one or more SINR measurements of the second cell site below a second SINR threshold.

4. The method of claim 1, further comprising transmitting, by the first cell site, information to the second cell site, wherein the information enables the second cell site to counteract the corrective action initiated by the first cell site.

5. The method of claim 1, wherein the first SINR threshold is determined according to a time of day, an event affecting operations of the first cell site, a key performance indicator (KPI), or any combination thereof.

6. The method of claim 1, wherein the initiating of the corrective action further comprises adjusting one or more KPIs of the affected sector or affected path.

7. The method of claim 1, wherein the SINR measurement for each of the plurality of sectors or the plurality of paths comprises an average of SINR measurements.

8. The method of claim 1, wherein the corrective action comprises filtering adjacent signals, adjusting gain of an uplink, filtering interference signals, utilizing diversity signal paths, adjusting a pilot signal, adjusting transmit parameters, adjusting receive parameters, adjusting a modulation scheme, adjusting a coding scheme, adjusting a position of an antenna to shape coverage, or any combination thereof.

9. The method of claim 1, wherein the interference component of the SINR measurement is based on measurements of signals that exceed an inter-cell threshold.

10. The method of claim 9, wherein the inter-cell threshold comprises an average of inter-cell signal measurements, and wherein the inter-cell threshold is above a thermal noise level.

11. The method of claim 1, wherein the first cell site comprises a cellular base station or a wireless access point.

12. A cell site, comprising:

a processor; and

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

obtaining a plurality of Signal to Interference plus Noise Ratio (SINR) measurements from a plurality of sectors or a plurality of paths of the cell site, wherein the cell site is part of a plurality of cell sites, wherein each of the SINR measurements represents a ratio of a first power level of a received communication signal to a second power level comprising a sum of an interference component and a noise component, the communication signal comprising a radio frequency (RF) signal in a frequency band, the interference component comprising a signal in the frequency band from a source other than the plurality of cell sites;

detecting a SINR measurement of the SINR measurements that is below a first threshold;

identifying an affected sector of the plurality of sectors or an affected path of the plurality of paths from which the SINR measurement was obtained;

obtaining one or more SINR measurements of a neighboring cell site of the plurality of cell sites; and

initiating corrective action to improve the SINR measurement of the affected sector or the affected path of the cell site according to the SINR measurement of the cell site and the one or more SINR measurements of the neighboring cell site.

13. The cell site of claim 12, wherein the operations further comprise determining whether the corrective action has affected the one or more SINR measurements of the neighboring cell site.

14. The cell site of claim 12, wherein the operations further comprise reversing at least in part the corrective action responsive to determining that the corrective action has reduced the one or more SINR measurements of the neighboring cell site below a second threshold.

15. The cell site of claim 12, wherein the operations further comprise reversing at least in part the corrective action responsive to determining that the corrective action has not improved the SINR measurement of the affected sector or the affected path.

16. The cell site of claim 12, wherein the operations further comprise reversing at least in part the corrective action responsive to determining that the corrective action has marginally improved the SINR measurement of the affected sector or the affected path.

17. The cell site of claim 12, wherein the cell site comprises a cellular base station or a wireless access point.

18. The cell site of claim 12, wherein the SINR measurements obtained by the cell site excludes measurements associated with control channels used by the cell site to communicate with other communication devices.

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

obtaining a plurality of signal to noise measurements from a plurality of sectors or a plurality of paths of a first cell site of a plurality of cell sites, wherein each of the signal to noise measurements represents a ratio of a first power level of a received communication signal to a second power level comprising a sum of an interference component and a noise component, the communication signal comprising a radio frequency (RF) signal in a frequency band, the interference component comprising a signal in the frequency band from a source other than the plurality of cell sites;

determining that a first signal to noise measurement of the signal to noise measurements is associated with a sector of the plurality of sectors or a path of the plurality of paths;

detecting that the first signal to noise measurement of the sector or the path is less than a previous signal to noise measurement of the sector or the path;

determining that a second cell site of the plurality of cell sites has performed corrective action to improve a signal to noise measurement of the second cell site; and

notifying the second cell site of a change in signal to noise performance of the first cell site.

20. The machine-readable storage medium of claim 19, wherein the operations further comprise obtaining an updated signal to noise measurement of the sector or the path of the first cell site responsive to receiving a notification from the second cell site that the second cell site has initiated corrective action to improve the first signal to noise measurement of the first cell site.

21. The machine-readable storage medium of claim 19, wherein the signal to noise measurements comprise signal to interference plus noise ratio measurements.

22. The machine-readable storage medium of claim 21, wherein one or more noise figures of the signal to interference plus noise ratio measurements comprises thermal noise, in-band co-channel interference, adjacent band noise, interference from foreign cell sites, out-of-band noise, or any combinations thereof.

23. A method, comprising:

obtaining, by a first communication system comprising a processor, performance measurements for each of a plurality of communication paths used by the first communication system, wherein the performance measurements comprise Signal to Interference plus Noise Ratio (SINR) measurements, wherein each of the SINR measurements represents a ratio of a first power level of a received communication signal to a second power level comprising a sum of an interference component and a noise component, the communication signal comprising a radio frequency (RF) signal in a frequency band, the interference component comprising a signal in the frequency band from a source other than the first communication system;

determining, by the first communication system, whether one or more of the performance measurements are below a performance threshold;

initiating, by the first communication system, corrective action to improve a performance measurement of an affected path of the plurality of paths responsive to the performance measurement of the affected path falling below the performance threshold; and

determining, by the first communication system, whether the corrective action has adversely affected a performance of a second communication system.

24. The method of claim 23, wherein the first communication system comprises a wireless base station, a wireless access point, or a mobile communication device.

25. The method of claim 23, further comprising:

detecting that the corrective action has adversely affected the performance of the second communication system; and

adjusting operational parameters associated with the affected path of the first communication system according to performance measurements obtained from the second communication system.

26. The method of claim 25, wherein the performance measurements obtained from the second communication system comprise noise data, interference mitigation data, or a combination thereof.

27. The method of claim 25, wherein the performance measurements obtained from the second communication system comprise uplink performance measurements comprising thermal noise, in-band co-channel interference, adjacent band noise, interference from foreign systems, out-of-band noise, or any combinations thereof.

28. The method of claim 25, wherein the performance measurements obtained from the second communication system comprise downlink performance measurements comprising a resource block schedule, gain data associated with the downlink, antenna orientation information, or any combinations thereof.

29. The method of claim 23, wherein the performance measurements comprise key performance indicators (KPIs).

30. The method of claim 29, wherein the KPIs comprise network traffic, data throughput, ineffective connection attempts by communication devices to establish a communication session with a cell site, uplink and downlink data volume, or any combinations thereof.