# US 10,313,087 B2 · Method and apparatus for signal interference processing

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- Number: US 10,313,087 B2
- Document ID: US10313087B2
- Status: Granted
- Kind: B2
- Application number: 14/640,815
- Filed: 2015-03-06
- Published: 2015-07-02
- Granted: 2019-06-04
- Earliest claimed: 2013-03-15
- Assignees: ISCO International, LLC
- Applicants: ISCO International, LLC
- Inventors: Amr Abdelmonem; Mikhail Galeev
- Web page: https://patentgrep.com/patent/US10313087B2

## CPC

- H04W 72/541: using the level of interference
- 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)}
- H04B 1/709: Correlator structure
- H04B 1/71: the interference being narrowband interference
- H04B 1/7103: the interference being multiple access interference
- H04B 15/00: Suppression or limitation of noise or interference (by means associated with receiver H04B1/10)
- 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)
- H04B 17/21: for calibration; for correcting measurements
- H04B 17/26: using historical data, averaging values or statistics
- H04B 17/318: Received signal strength
- H04B 17/327: Received signal code power [RSCP]
- H04B 17/345: Interference values ({signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]} H04B17/336)
- H04B 17/373: Predicting channel quality {or other radio frequency [RF]} parameters
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 5/0026: {Division using four or more dimensions, e.g. beam steering or quasi-co-location [QCL]}
- H04L 5/0032: {Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation}
- H04L 5/0073: {Allocation arrangements that take into account other cell interferences}
- H04L 41/069: using logs of notifications; Post-processing of notifications
- H04W 4/02: Services making use of location information
- H04W 4/023: {using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds}
- H04W 4/029: Location-based management or tracking services
- H04W 16/28: using beam steering
- H04W 24/02: Arrangements for optimising operational condition
- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 28/0236: {radio quality, e.g. interference, losses or delay}
- H04W 28/04: Error control
- H04W 40/16: based on interference
- H04W 52/04: Transmission power control [TPC]
- H04W 52/14: Separate analysis of uplink or downlink
- H04W 52/243: {taking into account interferences}
- H04W 64/00: Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management
- H04W 64/006: {with additional information processing, e.g. for direction or speed determination}
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/52: based on load
- H04W 72/54: based on quality criteria
- H04W 72/542: using measured or perceived quality
- H04B 7/2634: {for channel frequency control}
- H04B 2201/709709: Methods of preventing interference
- H04B 2201/709745: Iterative interference mitigation schemes
- H04J 11/0066: {of narrowband interference (narrowband interference reduction H04B1/1036)}
- H04L 5/006: {Quality of the received signal, e.g. BER, SNR, water filling}
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S)

## Abstract

A system that incorporates the subject disclosure may include, for example, a method for mitigating interference by filtering or redirection of communications traffic. Other embodiments are disclosed.

## Claims

### Claim 1

A method, comprising:
detecting according to at least one threshold, by a processing system comprising a processor, signal interference in a first resource block of a first plurality of resource blocks of a first wireless communication system;
responsive to determining an availability to utilize a second resource block of the first plurality of resource blocks to avoid the signal interference, redirecting, by the processing system, a first portion of traffic in the first resource block to the second resource block;
determining, by the processing system, that a second wireless communication system has a resource block available to transport a second portion of the traffic in the first resource block; and
responsive to determining that the second wireless communication system is less affected by the signal interference than the first wireless communication system, redirecting, by the processing system, the second portion of the traffic in the first resource block of the first wireless communication system to the resource block of the second wireless communication system,
wherein the determining that the second wireless communication system is less affected by the signal interference than the first wireless communication system comprises:
comparing a first frequency of occurrence of the signal interference in the first wireless communication system and a second frequency of occurrence of the signal interference in the second wireless communication system; and
determining, based on the comparing, that the second wireless communication system experiences the signal interference less frequently than the first wireless communication system,
wherein the signal interference in the second wireless communication system occurs periodically, and
wherein the second portion of the traffic is redirected according to a schedule based on a periodicity of the signal interference in the second wireless communication system, thereby avoiding the signal interference in the second wireless communication system.

### Claim 2 (depends on 1)

The method of claim 1, further comprising determining, by the processing system, that the signal interference degrades a quality of service of the traffic in the first resource block.

### Claim 3 (depends on 1)

The method of claim 1, further comprising:
measuring, by the processing system, power levels of the first plurality of resource blocks;
determining, by the processing system, at least one baseline power level from the power levels; and
determining, by the processing system, the at least one threshold from the at least one baseline power level.

### Claim 4 (depends on 1)

The method of claim 1, further comprising determining, by the processing system, that using the resource block of the second wireless communication system for transporting the traffic improves a quality of service of the traffic.

### Claim 5 (depends on 1)

The method of claim 1, further comprising determining, by the processing system, that the resource block of the second wireless communication system is not affected by the signal interference.

### Claim 6 (depends on 1)

The method of claim 1, further comprising determining, by the processing system, that a quality of service of the traffic of the resource block of the second wireless communication system is affected by the signal interference or other signal interference less than a quality of service of the traffic of the resource blocks of the first plurality of resource blocks of the first wireless communication system.

### Claim 7 (depends on 1)

The method of claim 1, wherein the processing system comprises a mobile communication device, a wireless base station, a switching station, a wireless router, or a wireless hub used by a satellite communication system.

### Claim 8 (depends on 7)

The method of claim 7, wherein the mobile communication device comprises a cellular telephone, wherein the wireless base station comprises a cellular base station, wherein the switching station controls a plurality of cellular base stations, and wherein the wireless router comprises a wireless fidelity router.

### Claim 9 (depends on 1)

The method of claim 1, further comprising:
monitoring, by the processing system, a plurality of wireless communication systems including the first wireless communication system and the second wireless communication system; and
identifying, by the processing system, a portion of the plurality of wireless communication systems having resource blocks available for interference mitigation.

### Claim 10 (depends on 1)

The method of claim 1, further comprising determining, by the processing system, that the second wireless communication system is in a communication range for redirecting the second portion of the traffic.

### Claim 11 (depends on 1)

The method of claim 1, further comprising reporting, by the processing system, the signal interference to another system.

### Claim 12 (depends on 1)

The method of claim 1, wherein the traffic comprises non-voice traffic.

### Claim 13 (depends on 1)

The method of claim 1, further comprising:
determining, by the processing system, that interference suppression by one or more filtering techniques is not feasible,
wherein the redirecting of the first portion of traffic in the first resource block to the second resource block is responsive to the determining that the interference suppression by the one or more filtering techniques is not feasible.

### Claim 14

A non-transitory machine-readable storage medium comprising instructions which, when executed by a processing system including a processor, facilitate performance of operations comprising:
detecting signal interference in a first channel of a first plurality of channels in a first wireless communication system;
redirecting a first portion of traffic in the first channel to a second channel of the first plurality of channels in the first wireless communication system responsive to identifying an availability to utilize the second channel to avoid at least some of the signal interference; and
redirecting a second portion of the traffic in the first channel to a third channel in a second wireless communication system to avoid at least some of the signal interference, responsive to determining that the second wireless communication system is less affected by the signal interference than the first wireless communication system,
wherein the determining that the second wireless communication system is less affected by the signal interference than the first wireless communication system comprises:
comparing a first frequency of occurrence of the signal interference in the first wireless communication system and a second frequency of occurrence of the signal interference in the second wireless communication system; and
determining, based on the comparing, that the second wireless communication system experiences the signal interference less frequently than the first wireless communication system,
wherein the signal interference in the second wireless communication system occurs periodically, and
wherein the second portion of the traffic is redirected according to a schedule based on a periodicity of the signal interference in the second wireless communication system, thereby avoiding the signal interference in the second wireless communication system.

### Claim 15 (depends on 14)

The non-transitory machine-readable storage medium of claim 14, wherein each of the first, second and third channels comprises a respective resource block conforming to a long term evolution (LTE) protocol.

### Claim 16 (depends on 14)

The non-transitory machine-readable storage medium of claim 14, wherein the operations further comprise determining at least one threshold for detecting the signal interference in the first plurality of channels.

### Claim 17 (depends on 16)

The non-transitory machine-readable storage medium of claim 16, wherein determining the at least one threshold comprises:
measuring power levels of the first plurality of channels;
determining a baseline power level from the power levels; and
determining the at least one threshold from at least a portion of the power levels.

### Claim 18

A system, comprising:
a processing system including a processor; and
a memory storing executable instructions that, when executed by the processing system, facilitate performance of operations, comprising:
detecting signal interference in a first portion of spectrum in a first wireless communication system;
instructing a communication device to redirect a first portion of traffic in the first portion of spectrum to a second portion of spectrum in the first wireless communication system responsive to determining an availability to utilize the second portion of spectrum in the first wireless communication system to avoid at least some of the signal interference; and
instructing the communication device to redirect a second portion of the traffic in the first portion of spectrum in the first wireless communication system to a third portion of spectrum of a second wireless communication system to avoid at least some of the signal interference, responsive to determining that the second wireless communication system is less affected by the signal interference than the first wireless communication system,
wherein the determining that the second wireless communication system is less affected by the signal interference than the first wireless communication system comprises:
comparing a first frequency of occurrence of the signal interference in the first wireless communication system and a second frequency of occurrence of the signal interference in the second wireless communication system; and
determining, based on the comparing, that the second wireless communication system experiences the signal interference less frequently than the first wireless communication system,
wherein the signal interference in the second wireless communication system occurs periodically, and
wherein the second portion of the traffic is redirected according to a schedule based on a periodicity of the signal interference in the second wireless communication system, thereby avoiding the signal interference in the second wireless communication system.

### Claim 19 (depends on 18)

The system of claim 18, wherein the operations further comprise determining that the signal interference reduces quality of service in the first portion of spectrum in the first wireless communication system.

### Claim 20 (depends on 18)

The system of claim 18, wherein the traffic comprises voice traffic.
