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

• US 10,039,061 B2
• Filed: 08/28/2017
• Issued: 07/31/2018
• 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:
  US15/688,010
• Publication Number:
  US 20170374625A1
• Time in Patent Office: 337 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 processing system including a processor, a plurality of Signal to Interference plus Noise Ratio (SINR) measurements for a plurality of sectors or a plurality of paths associated with a first cell site 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; and

initiating, by the processing system, corrective action to improve a SINR measurement of a sector of the plurality of sectors or a path of the plurality of paths.

2. The method of claim 1, wherein the corrective action is initiated to improve the 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.

3. The method of claim 2, 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.

4. The method of claim 3, wherein the initiating of the corrective action further comprises adjusting one or more KPIs of the affected sector or affected path.

5. The method of claim 2, further comprising reversing at least in part, by the processing system, the corrective action, responsive to determining that the corrective action has reduced one or more SINR measurements of a second cell site below a second SINR threshold.

6. The method of claim 1, further comprising transmitting, by the processing system, information to a second cell site, wherein the information enables the second cell site to counteract the corrective action.

7. 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.

8. A method, comprising:

obtaining, by a processing system including a processor, signal strength information to determine a plurality of received signal strength indicator (RSSI) values including a first RSSI value for signals in a carrier frequency band due to a wireless carrier on a cellular network, a second RSSI value for signals outside the carrier frequency band due to a competing wireless carrier, a third RSSI value for signals outside the carrier frequency band due to sources other than the competing wireless carrier, and a fourth RSSI value for signals in an unused portion of a frequency spectrum of the carrier;

determining, by the processing system, a signal to interference plus noise ratio (SINR) from the plurality of RSSI values for each of a plurality of nodes of the cellular network, thereby obtaining a plurality of SINR values relating to the cellular network; and

analyzing, by the processing system, the plurality of SINR values to provide recommendations for actions to improve a performance of at least one of the plurality of nodes of the cellular network.

9. The method of claim 8, wherein the analyzing comprises generating a matrix of the plurality of SINR values, and performing a matrix optimization procedure to obtain an optimized SINR value for each of the plurality of nodes.

10. The method of claim 9, wherein for each of the plurality of nodes, the SINR value is optimized within a predetermined threshold range.

11. The method of claim 9, wherein each element of the matrix comprises a SINR value SINR_i,j, wherein indices i and j respectively corresponding to a cell site and a sector of the cellular network.

12. The method of claim 11, wherein the SINR value SINR_i,j is calculated by averaging SINR values for the cell site and sector over a plurality of resource blocks.

13. The method of claim 8, wherein the analyzing comprises generating a matrix of the plurality of SINR values, and performing a matrix optimization procedure to obtain an optimized SINR value for the cellular network.

14. The method of claim 8, wherein the analyzing and the actions are performed in a closed loop process to adjust an RF link of the at least one of the plurality of nodes of the cellular network.

15. The method of claim 8, wherein a node of the plurality of nodes comprises a cell site including an antenna, and wherein the actions comprise 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 the antenna, or a combination thereof.

16. A device 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 comprising;

obtaining signal strength information to determine a plurality of received signal strength indicator (RSSI) values including a first RSSI value for signals in a carrier frequency band due to a wireless carrier on a cellular network, a second RSSI value for signals outside the carrier frequency band due to a competing wireless carrier, a third RSSI value for signals outside the carrier frequency band due to sources other than the competing wireless carrier, and a fourth RSSI value for signals in an unused portion of a frequency spectrum of the carrier;

determining a signal to interference plus noise ratio (SINR) from the plurality of RSSI values for each of a plurality of nodes of the cellular network, thereby obtaining a plurality of SINR values relating to the cellular network; and

analyzing the plurality of SINR values to provide recommendations for actions to adjust an RF link of at least one of the plurality of nodes of the cellular network.

17. The device of claim 16, wherein the analyzing and the actions are performed in a closed loop process.

18. The device of claim 16, wherein a node of the plurality of nodes comprises a cell site including an antenna, and wherein the actions comprise 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 the antenna, or a combination thereof.

19. The device of claim 16, wherein the analyzing comprises generating a matrix of the plurality of SINR values, and performing a matrix optimization procedure to obtain an optimized SINR value for each of the plurality of nodes.

20. The device of claim 19, wherein for each of the plurality of nodes, the SINR value is optimized within a predetermined threshold range.