UE Route Selection Policy Update via Feedback

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Solution Overview

Problem

In conventional telecommunications networks, user equipment route selection policies become inappropriate or inapplicable when there are changes in connection conditions or operation situations, leading to potential conflicts or inefficiencies.

Innovation Solution

The user equipment transmits a user equipment route selection policy update request message to the telecommunications network, allowing the policy and charging function to transmit updated user equipment route selection policy information that corresponds to the request, ensuring the policies are adapted to the current situation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the network mandates route selection policies to user equipment, then traffic routing control is improved, but the policies become outdated when connection conditions change

Engineering Contradiction:

Improveroute selection policy applicabilityVSAvoidpolicy update delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The user equipment monitors its own connection conditions and operation situation, then provides feedback by transmitting update request messages when changes are detected. This feedback mechanism ensures the network receives timely information about condition changes and can update policies accordingly, resolving the contradiction between policy control reliability and update timeliness.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The user equipment proactively transmits update request messages before the network would naturally detect and respond to condition changes. By taking preliminary action to request policy updates immediately when changes are detected at the user equipment level, the system avoids the delay inherent in network-side detection mechanisms.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If the user equipment monitors and requests policy updates, then policy relevance is improved, but signaling overhead increases

Engineering Contradiction:

Improvepolicy adaptation to conditionsVSAvoidsignaling message volume

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The user equipment performs local monitoring of its own connection conditions and operation situation, rather than relying on continuous network-wide polling or broadcasting. This localized approach allows the system to adapt policies where needed without generating excessive network-wide signaling traffic, balancing adaptability with signaling overhead.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The user equipment requests policy updates only when specific changes are detected that would actually impact route selection requirements, rather than requesting updates continuously or for every minor condition change. This partial action approach maintains policy relevance while avoiding unnecessary signaling messages.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20250097146A1Requesting and/or transmitting user equipment route selection policy information when operating a user equipment connected to a telecommunications network

Publication Date: 2025.03.20 DEUTSCHE TELEKOM AG

AI summary

A method is provided for requesting and/or transmitting user equipment route selection policy information when operating a user equipment connected to a telecommunications network. The telecommunications network comprises a core network comprising a policy and charging function. The policy and charging function is configured to transmit user equipment route selection policy information to the user equipment. The method comprises the following steps: in a first step, the user equipment transmits a user equipment route selection policy update request message to the telecommunications network; and in a second step, user equipment route selection policy information that corresponds to the user equipment route selection policy update request message is received by the user equipment.