Mobile Management Node Session Reuse for Core Network Load Reduction

Solution Overview

Problem

Conventional mobile communication network systems uniformly perform attach and detach processing on all mobile terminals without considering their specific features, leading to unnecessary load on the core network and core node, especially for terminals that do not frequently change positions.

Innovation Solution

A mobile communication network system with a mobile management node that omits detach and attach processing on the core network side for terminals that do not frequently change positions, by reusing existing communication sessions and radio lines, thereby reducing the load on the core network.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If uniform attach/detach processing is performed on all mobile terminals, then processing completeness is ensured, but core network load increases

Engineering Contradiction:

Improveprocessing completenessVSAvoidcore network load

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent applies local quality by differentiating processing based on terminal characteristics. Specifically, terminals are categorized into those that frequently change positions and those that do not. For terminals that do not frequently change positions, the core network omits detach processing and reuses existing communication sessions, while for mobile terminals, normal attach/detach processing is performed. This localized differentiation reduces overall core network load while maintaining necessary processing completeness.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent segments the mobile terminal population into distinct groups based on their movement characteristics. By dividing terminals into 'frequently moving' and 'infrequently moving' categories, the system can apply different processing strategies to each segment, thereby reducing unnecessary processing for the infrequently moving group while maintaining full processing for the frequently moving group.

Inventive Principle:

Principle #1Segmentation

2Reliability

If attach/detach processing is performed frequently, then connection reliability is maintained, but network congestion occurs

Engineering Contradiction:

Improveconnection reliabilityVSAvoidnetwork congestion

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies local quality by differentiating processing based on terminal characteristics. Specifically, terminals are categorized into those that frequently change positions and those that do not. For terminals that do not frequently change positions, the core network omits detach processing and reuses existing communication sessions, while for mobile terminals, normal attach/detach processing is performed. This localized differentiation reduces overall core network load while maintaining necessary processing completeness.

Inventive Principle:

Principle #3Local quality

3Productivity

If detach processing is omitted for infrequently moving terminals, then core network load decreases, but session continuity must be maintained

Engineering Contradiction:

Improvecore network load reductionVSAvoidsession continuity

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The patent applies preliminary action by establishing communication sessions with terminals before they become mobile. When a terminal attaches to the core network, the system proactively sets up the communication session and stores the terminal's identification information. This preliminary setup allows the system to later omit detach processing for infrequently moving terminals, as the session is already established and can be reused, thereby reducing core network load while maintaining session continuity.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses feedback mechanisms to track terminal movement patterns. The core network monitors whether terminals frequently change positions and uses this feedback information to determine whether to apply the optimized processing path (omitting detach processing) or the standard processing path. This feedback-driven approach ensures that session continuity is maintained while achieving load reduction for appropriate terminal types.

Inventive Principle:

Principle #23Feedback

Data Source

PatentEP2763476B1Mobile communication network system, communication control method, and non-temporary computer-readable medium storing program therefor

Publication Date: 2019.10.30 NEC CORP

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AI summary

In a detach request signal that requests detach being received from the mobile station UE (27), a mobile management node MME (22) arranged on the core network side in order to perform management control of mobile communication omits the detach processing of the core network side, hold a communication session of the core network side set in the mobile terminal having attached, make a connection between the mobile management node MME (22) and the mobile station UE (27) released, disconnect the connection with the mobile station UE (27) and the core network, and in an attach request signal that requests attach being received from the mobile station (27), omits the attach processing in the core network side, uses a held communication session regarding to the mobile station (27) of the core network side and performs the setting of the only radio line.