Terminal Apparatus Network Slice Selection and Timer Management

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Solution Overview

Problem

In NextGen communication systems, there is a lack of means to manage parameter information and modes for establishing sessions and realizing communications, particularly in selecting appropriate Common Control Plane Network Functions (CCNF) and handling Mobile Originated only (MO only) modes.

Innovation Solution

A terminal apparatus and core network apparatus are configured to transmit and receive identification information, including network slice and service types, to manage timer values for expiring parameters, enabling effective communication control and session management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If parameter information and mode management means are not established, then communication control and session management cannot be performed, but system complexity increases when implementing management mechanisms

Engineering Contradiction:

Improvecommunication control reliabilityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The terminal apparatus autonomously manages its own communication parameters and modes by storing parameter information locally and making decisions based on stored mode information, eliminating the need for complex centralized management mechanisms while ensuring reliable communication control

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Parameter information and mode information are acquired and stored in advance during attach procedures and tracking area update procedures, enabling the terminal to perform communication control and session management without real-time network intervention, thus reducing system complexity

Inventive Principle:

Principle #10Preliminary action

2Loss of information

If routing destination selection is not implemented, then message routing cannot be performed, but information loss occurs without proper parameter management

Engineering Contradiction:

Improveparameter information lossVSAvoidrouting management complexity

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The terminal uses stored parameter information and mode information to make routing decisions, with the mode information acting as feedback from previous network states to guide current routing actions, preventing information loss without requiring complex real-time management

Inventive Principle:

Principle #23Feedback

3Reliability

If timer management for parameter expiry is not implemented, then parameter validity cannot be ensured, but communication reliability decreases without proper timer control

Engineering Contradiction:

Improveparameter validity reliabilityVSAvoidtimer management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Timer values are assigned in advance during attach and tracking area update procedures, enabling the terminal to autonomously track parameter validity periods without requiring complex real-time timer management from the network, thus ensuring parameter validity while keeping timer management simple

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11178711B2User equipment, core network device, and communication control method thereof performing communications using network slice selection assistance information

Publication Date: 2021.11.16 SHARP KK

AI summary

Provided is a communication control method for optimally managing control information of a terminal apparatus capable of connecting to various kinds of core networks, a device communication controller for a network capable of connecting to the terminal apparatus, a configurator for configuring control information relating to communication of each device, a communication controller for updating configuration information relating to communication stored by each device, and the like, in the terminal apparatus and the network. This provides a communication controller suitable for a communication system and a terminal apparatus that support configurations of various kinds of core networks.