Default Presence Reporting Area Status Signaling Optimization

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Solution Overview

Problem

In communication technologies, particularly in LTE and 5G wireless systems, large and small Presence Reporting Areas (PRAs) generate significant signaling overhead due to frequent reporting of terminal device statuses, where devices are often in one status more likely than the other, leading to inefficient resource utilization.

Innovation Solution

Introducing a default PRA status that allows network nodes to refrain from reporting initial PRA statuses when they are consistent with the default, reducing unnecessary signaling by using messages like Create Session Response or Event Exposure Subscribe Request to indicate the default status, thereby minimizing reports.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If initial PRA status is reported for all terminal devices, then network nodes have complete status information, but signaling overhead increases significantly

Engineering Contradiction:

ImprovePRA status information completenessVSAvoidsignaling overhead

Core Design Contradiction:

Loss of informationVSLoss of energy

Solution Approach 1:

The network node performs preliminary determination of the default PRA status based on the terminal device's current location and PRA definition before requiring status reporting. This preliminary action allows the network to anticipate which devices need status reports and which can use the default status, reducing unnecessary signaling while maintaining information completeness for devices that do move.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If frequent PRA status reporting is implemented, then network has real-time location awareness, but resource utilization becomes inefficient

Engineering Contradiction:

Improvelocation awareness accuracyVSAvoidresource utilization efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system dynamically adjusts the reporting requirement based on the terminal device's current status relative to the default status. Devices with status different from the default are required to report, while devices matching the default status do not need to report initially. This dynamic approach maintains location awareness reliability for devices that move while improving resource utilization by avoiding redundant reports from stationary devices.

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If all terminal devices report initial PRA status, then network nodes can apply correct charging policies, but signaling overhead increases

Engineering Contradiction:

Improvecharging policy applicabilityVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The network node applies different reporting requirements to different terminal devices based on their local characteristics (current location relative to PRA). Instead of uniformly requiring all devices to report, the system selectively reports only when necessary, applying the correct charging policy approach locally for each device based on its status determination.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20230042053A1Method and network node for controlling report of presence reporting area status

Publication Date: 2023.02.09 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

The present disclosure provides a method in a network node for controlling report of a Presence Reporting Area (PRA) status. The method includes: receiving from another network node a message indicating a default PRA status; and refraining from reporting an initial PRA status of a terminal device to the other network node when the initial PRA status is consistent with the default PRA status.