# US 9,930,566 B2 · Method of controlling traffic in a cellular network and system thereof

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- Number: US 9,930,566 B2
- Document ID: US9930566B2
- Status: Granted
- Kind: B2
- Application number: 14/955,389
- Filed: 2015-12-01
- Published: 2016-06-02
- Granted: 2018-03-27
- Earliest claimed: 2014-12-01
- Assignees: Cellwize Wireless Technologies Ltd.
- Applicants: Cellwize Wireless Technologies Ltd.
- Inventors: Daniel Dribinski; Evgeny Finkel; Sasi Geva
- Web page: https://patentgrep.com/patent/US9930566B2

## CPC

- H04W 28/0284: {detecting congestion or overload during communication (monitoring arrangements H04L43/00)}
- H04L 41/0823: characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability (for optimising operational conditions of wireless networks H04W24/02)
- H04L 43/16: Threshold monitoring
- H04W 16/08: Load shedding arrangements
- H04W 24/02: Arrangements for optimising operational condition
- H04W 28/0967: {Quality of Service [QoS] parameters}
- H04W 48/20: Selecting an access point
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

There are provided a method of controlling traffic in a cellular network comprising a plurality of controlled access points (APs) and a system thereof. The method comprises: continuously obtaining data informative of resource utilization with regard to APs of the plurality of controlled APs; processing the obtained data to continuously classify, for a given AP, downlink load with respect to a downlink load threshold and uplink load with respect to an uplink load threshold, thereby giving rise to downlink and uplink classification results, wherein uplink load classification is provided independently of downlink load classification; and enabling provisioning of the given AP in accordance with respective classification results, wherein: provisioning in accordance with downlink classification results comprises changing cell reselection parameters and/or changing cell footprint parameters; provisioning in accordance with uplink classification comprises changing cell selection parameters; and provisioning in accordance with uplink classification is enabled independently of provisioning in accordance with downlink classification.

## Claims

### Claim 1

A method of controlling traffic in a cellular network comprising a plurality of controlled access points (APs), the method comprising:
continuously obtaining by a computerized system data informative of resource utilization with regard to APs of the plurality of controlled APs;
processing, by the computerized system, the obtained data to continuously classify, for a given AP of the plurality of controlled APs, downlink load with respect to a downlink load threshold and uplink load with respect to an uplink load threshold, thereby giving rise to downlink and uplink classification results, wherein uplink load classification is provided independently of downlink load classification;
continuously obtaining one or more Key Performance Indicators (KPIs) with regard to the given AP;
using the obtained KPIs for calculating, for the given AP, a congestion-indicative value; and
enabling, by the computerized system, provisioning of the given AP in accordance with respective classification results, wherein:
provisioning in accordance with downlink classification results comprises at least one of: changing cell reselection parameters and changing cell footprint parameters;
provisioning in accordance with uplink classification results comprises changing cell selection parameters; and
provisioning in accordance with uplink classification results is enabled independently of provisioning in accordance with downlink classification results,
wherein enabling provisioning the given AP in accordance with downlink classification results is provided only if the calculated congestion-indicative value is less than a predefined value of a congestion threshold.

### Claim 2 (depends on 1)

The method of claim 1, wherein provisioning the given AP in accordance with downlink classification results is further enabled only if uplink classification results match predefined criteria.

### Claim 3 (depends on 1)

The method of claim 1, wherein downlink load classification of the given AP is enabled only when the uplink load of the given AP is classified as being below the load threshold.

### Claim 4 (depends on 1)

The method of claim 1, wherein values of load thresholds are predefined.

### Claim 5 (depends on 1)

The method of claim 1, wherein values of load thresholds of the given AP differ from values of load thresholds of at least one other AP of the plurality of controlled APs.

### Claim 6 (depends on 1)

The method of claim 1, wherein the computerized system changes the values of load thresholds in accordance with predefined rules.

### Claim 7 (depends on 6)

The method of claim 6, wherein the predefined rules are related to a privilege level of the given AP.

### Claim 8 (depends on 1)

The method of claim 1, wherein data informative of resource utilization with regard to at least one AP are obtained in a format differing from the format of data informative of resource utilization obtained with regard to at least one other AP, the method further comprising an intermediate processing of the obtained data prior to the classification.

### Claim 9 (depends on 1)

The method of claim 1 wherein duration of an uplink classification period for providing uplink load classification differs from duration of a downlink classification period for providing downlink load classification.

### Claim 10

A traffic control system configured to control traffic in a cellular network comprising a plurality of controlled access points (APs), the system comprising a processor operatively coupled to a memory and an interface circuit operatively coupled to the processor and the memory, wherein
the interface circuit is configured to continuously obtain data informative of resource utilization with regard to APs of the plurality of controlled Aps and continuously obtain one or more KEY Performance Indicators (KPIs) with regard to the given AP;
the processor is configured to:
process data obtained via the interface circuit to continuously classify, for a given AP of the plurality of controlled APs, downlink load with respect to a downlink load threshold stored in the memory and uplink load with respect to an uplink load threshold stored in the memory, thereby giving rise to downlink and uplink classification results, wherein the processor is configured to provide uplink load classification independently of downlink load classification;
to use the obtained KPIs for calculating, for the given AP, a congestion-indicative value; and
enable provisioning of the given AP in accordance with respective classification results, wherein:
provisioning in accordance with downlink classification results comprises at least one of: changing cell reselection parameters and changing cell footprint parameters;
provisioning in accordance with uplink classification results comprises changing cell selection parameters; and
provisioning in accordance with uplink classification results is enabled independently of provisioning in accordance with downlink classification results;
wherein the processor is configured to enable provisioning the given AP in accordance with downlink classification results only if the calculated congestion-indicative value is less than a predefined value of a congestion threshold.

### Claim 11 (depends on 10)

The system of claim 10, wherein provisioning the given AP in accordance with downlink classification results is further enabled only if uplink classification results match predefined criteria.

### Claim 12 (depends on 10)

The system of claim 10, wherein downlink load classification of the given AP is enabled only when the uplink load of the given AP is classified as being below the load threshold.

### Claim 13 (depends on 10)

The system of claim 10, wherein values of load thresholds are predefined.

### Claim 14 (depends on 10)

The system of claim 10, wherein values of load thresholds of the given AP differ from values of load thresholds of at least one other AP of the plurality of controlled APs.

### Claim 15 (depends on 10)

The system of claim 10, wherein the processor is further configured to change the values of load thresholds in accordance with predefined rules and to store the changed values in the memory.

### Claim 16 (depends on 15)

The system of claim 15, wherein the predefined rules are related to a privilege level of the given AP.

### Claim 17 (depends on 10)

The system of claim 10, wherein data informative of resource utilization with regard to at least one AP are obtained in a format differing from the format of data informative of resource utilization obtained with regard to at least one other AP, the processor further configured to provide an intermediate processing of the obtained data prior to the classification.

### Claim 18

A non-transitory computer readable storage medium having instructions that, when executed by a processing device, cause the processing device to perform operating a traffic control system capable of controlling traffic in a cellular network comprising a plurality of controlled access points (APs), the operating comprising:
continuously obtaining by a computerized system data informative of resource utilization with regard to APs of the plurality of controlled APs;
processing, by the computerized system, the obtained data to continuously classify, for a given AP of the plurality of controlled APs, downlink load with respect to a downlink load threshold and uplink load with respect to an uplink load threshold, thereby giving rise to downlink and uplink classification results, wherein uplink load classification is provided independently of downlink load classification;
continuously obtaining one or more Key Performance Indicators (KPIs) with regard to the given AP;
using the obtained KPIs for calculating, for the given AP, a congestion-indicative value; and
enabling, by the computerized system, provisioning of the given AP in accordance with respective classification results, wherein:
provisioning in accordance with downlink classification results comprises changing cell reselection parameters;
wherein provisioning in accordance with uplink classification comprises at least one of: changing cell selection parameters and changing cell footprint parameters; and
wherein provisioning in accordance with uplink classification is enabled independently of provisioning in accordance with downlink classification,
wherein enabling provisioning the given AP in accordance with downlink classification results is provided only if the calculated congestion-indicative value is less than a predefined value of a congestion threshold.
