Passive Location Change Detection Without Network Polling

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Solution Overview

Problem

Existing location services in mobility networks rely on polling to detect changes in device locations, which can be inefficient and resource-intensive, and do not effectively inform core network entities of location changes detected in the radio access network.

Innovation Solution

Implementing a passive location change detection system within the radio access network that sends location change notifications to core network entities, allowing for real-time updates without continuous polling, using radio access network nodes to identify location changes and notify appropriate location services entities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If polling is used to detect device location changes, then location information can be obtained, but the system becomes resource-intensive and inefficient

Engineering Contradiction:

Improvelocation change detection accuracyVSAvoidnetwork resource consumption

Core Design Contradiction:

Measurement precisionVSLoss of energy

Solution Approach 1:

Instead of the network actively polling devices to detect location changes, the patent inverts the approach by having devices passively notify the network of their location changes. This reversal eliminates the need for continuous polling while maintaining accurate location change detection, thereby reducing network resource consumption and energy loss.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent implements a mechanism where the mobile device itself performs the location change detection and autonomously generates notifications when location changes occur. This self-service approach transfers the detection burden from the network to the device, reducing network processing requirements and resource consumption while maintaining detection accuracy.

Inventive Principle:

Principle #25Self-service

2Measurement precision

If polling is used to detect location changes, then location information is obtained, but the response time is delayed and efficiency is reduced

Engineering Contradiction:

Improvelocation information accuracyVSAvoidlocation update delay

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent implements preliminary action by having mobile devices continuously monitor their own location and prepare location change notifications in advance. When a location change occurs, the pre-prepared notification is immediately transmitted to the network, eliminating the delay inherent in polling systems where the network must first query before obtaining location information.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent inverts the traditional polling sequence by having devices proactively notify the network of location changes rather than waiting for network queries. This inversion transforms the passive polling model into an active notification model, significantly reducing location update delays while maintaining information accuracy.

Inventive Principle:

Principle #13The other way round (Inversion)

3Speed

If continuous polling is implemented to track device locations, then real-time location information is obtained, but network resources are excessively consumed

Engineering Contradiction:

Improvelocation information delivery speedVSAvoidnetwork bandwidth consumption

Core Design Contradiction:

SpeedVSLoss of energy

Solution Approach 1:

The patent replaces continuous polling with periodic location change notifications generated only when location changes occur. This periodic action based on events rather than time intervals maintains real-time location information delivery speed while dramatically reducing network bandwidth consumption by eliminating redundant polling transmissions during periods of no location change.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

By implementing self-service location monitoring at the device level, the system achieves real-time location information delivery without requiring continuous network polling. The device autonomously detects and reports location changes, reducing network bandwidth consumption while maintaining the speed of location information delivery.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12425803B2Passive location change detection system for mobility networks

Publication Date: 2025.09.23 AT&T INTELLECTUAL PROPERTY I L P

AI summary

Aspects of the subject disclosure may include, for example, identifying positioning information associated with a wireless communication device, determining a current location of the wireless communication device based on the positioning information, detecting a location change based on the current location of the wireless communication device, and responsive to the detection of the location change, sending a location change notification to a location management entity. Other embodiments are disclosed.