Network-Initiated Session Management for Mobile Service Continuity
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Solution Overview
Problem
Current mobile communication systems lack a means for optimizing session establishment and ensuring continuity of mobile communication services across various terminals and network apparatuses, particularly in NextGen communication systems.
Innovation Solution
A terminal apparatus and Session Management Entity (SME) that utilize a network-initiated session establishment procedure, exchanging identification information such as session type, IP address, and radio bearer information to establish and maintain optimized mobile communication sessions, enabling continuity and mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional session establishment procedures are used, then device complexity is reduced, but service continuity and mobility optimization are insufficient
Solution Approach 1:
The session establishment procedure is divided into multiple phases: initial session establishment, continuity check, and session optimization. The terminal apparatus segments the session management into distinct functional blocks including identification information extraction, continuity determination, and selective session establishment, making the complex process more manageable and reliable
Solution Approach 2:
The terminal apparatus performs preliminary actions by extracting and storing identification information (session type, IP address, radio bearer status, data network identifier) before actual session establishment. This preliminary data collection enables continuity determination without requiring complex real-time analysis during session setup
Solution Approach 3:
The network apparatus receives feedback from the terminal apparatus regarding session establishment status and continuity conditions. Based on this feedback, the network apparatus dynamically adjusts session management decisions, optimizing service continuity while controlling complexity through iterative refinement
2Adaptability or versatility
If network-initiated session establishment is implemented, then service continuity is improved, but protocol complexity increases
Solution Approach 1:
The session establishment procedure is designed with multi-functionality to handle various session types (IP and Non-IP sessions) through a unified protocol framework. The terminal apparatus uses universal identification information fields that can represent different session characteristics, enabling flexible network-initiated establishment without requiring separate specialized protocols for each session type
Solution Approach 2:
The protocol utilizes parameter changes in identification information fields to adapt to different session requirements. By modifying the values and interpretations of standard fields (session type indicators, IP address formats, radio bearer flags), the system achieves versatile session establishment without adding significant protocol complexity
3Manufacturing precision
If detailed identification information is exchanged, then session management precision is improved, but communication overhead increases
Solution Approach 1:
The terminal apparatus applies partial action by exchanging only the necessary identification information fields required for continuity determination. Rather than transmitting complete session contexts, the system selectively exchanges critical parameters (session type, IP address, radio bearer status, data network identifier), reducing communication overhead while maintaining sufficient precision for accurate session management
Solution Approach 2:
Identification information is extracted and prepared in advance during terminal initialization and registration phases. This preliminary preparation eliminates the need for extensive information exchange during actual session establishment, reducing setup time while maintaining management precision through pre-validated data structures
Data Source
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AI summary
To provide a communication control means for establishing a session between a terminal apparatus and a network in a network-initiated manner and/or a connection control means for supporting service continuity and/or a session establishment control means for supporting service continuity and/or a communication control means for service continuity, and the like. These provide a communication control method for establishing an optimal session for service continuity through which service is continued by switching between sessions for communication, an optimal communication control method for service continuity, and the like.