Serving Gateway Resource Release for ISR Network Transitions

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Solution Overview

Problem

Conventional systems fail to efficiently release network resources when a user equipped with the Idle Mode Signaling Reduction (ISR) mechanism transitions from a 3GPP communication network to a non-3GPP communication network, leading to resource occupancy issues and impaired system processing capability.

Innovation Solution

A method and device for network resource release processing, where a serving Gateway (GW) and Mobility Management Network Element (NE) exchange messages to identify and delete resources established by 3GPP networks for a user equipment (UE) upon transitioning to a non-3GPP network, utilizing specific indication information in messages to trigger resource release processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If the ISR mechanism is used to reduce mobility management processing, then signaling overhead is reduced, but network resources cannot be released when UE moves to non-3GPP networks

Engineering Contradiction:

Improvesignaling overheadVSAvoidresource release capability

Core Design Contradiction:

Loss of energyVSProductivity

Solution Approach 1:

The serving GW preliminarily establishes resource release triggers by monitoring indication information from mobility management NEs. When the UE moves to a non-3GPP network, the serving GW proactively detects the movement through indication information and initiates resource release procedures before resources become stale, ensuring continuous resource management efficiency while maintaining ISR benefits

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The serving GW acts as an intermediary between the mobility management NE and the PDN GW. It receives indication information from the mobility management NE about UE movement to non-3GPP networks, processes this information, and triggers appropriate resource release actions with the PDN GW, thereby bridging the gap between mobility management and resource management functions

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If conventional resource release processing is used, then processing is simple, but resources remain occupied after UE transitions to non-3GPP networks

Engineering Contradiction:

Improveprocessing complexityVSAvoidoccupied resources

Core Design Contradiction:

Device complexityVSQuantity of substance

Solution Approach 1:

The serving GW implements self-service resource management by autonomously monitoring indication information from mobility management NEs, detecting UE movements to non-3GPP networks, and triggering resource release procedures without requiring complex external coordination. This self-service mechanism maintains low processing complexity while effectively releasing occupied resources

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system implements feedback mechanisms where the serving GW continuously monitors indication information from mobility management NEs regarding UE location and network type. When feedback indicates UE movement to non-3GPP networks, the serving GW triggers resource release actions, creating a closed-loop resource management system that adapts to changing network conditions while maintaining simple processing

Inventive Principle:

Principle #23Feedback

3Productivity

If ISR mechanism is implemented across 3GPP networks, then mobility management is optimized, but resource allocation fails in non-3GPP networks

Engineering Contradiction:

Improvemobility management efficiencyVSAvoidcross-network resource management

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The serving GW implements multi-functional resource management that works across both 3GPP and non-3GPP networks. It universally monitors indication information from mobility management NEs regardless of the target network type, and applies appropriate resource release procedures for both 3GPP and non-3GPP scenarios, thereby achieving cross-network resource management adaptability while preserving ISR mobility management efficiency

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The resource management system dynamically adapts its behavior based on the target network type. When indication information shows UE movement to non-3GPP networks, the serving GW dynamically triggers resource release procedures. This dynamic adaptation allows the system to optimize for ISR in 3GPP networks while simultaneously handling resource release for non-3GPP networks, achieving both mobility efficiency and cross-network versatility

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS8041361B2Method and device of network resource release processing

Publication Date: 2011.10.18 NOKIA TECHNOLOGIES OY

AI summary

A method of network resource release processing is provided, which includes the following steps. After user equipment (UE) using idle mode signaling reduction (ISR) mechanism registers to two 3rd Generation Partnership Project (3GPP) communication networks, when the UE changes from the 3GPP network to a non-3GPP communication network, a serving gateway (serving GW) receives a message sent from a peer endpoint network element (NE), and deletes network resources established by the two 3GPP communication networks for the UE according to the message. A mobility management NE and a serving GW are also provided. Through the method and device of network resource release processing, the resources are released when the UE using the ISR mechanism changes from the 3GPP network to the non-3GPP communication network.