Terminal Mobility Management via Attach Accept Identification
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Solution Overview
Problem
In the context of Next Generation (NexGen) communication systems, there is a lack of specified procedures for selecting or changing the granularity of terminal mobility, which is essential for providing suitable communication paths and mobility management for diverse terminal types, including both low and high movement frequency devices.
Innovation Solution
A communication control method and system that includes the transmission and reception of attach accept messages between a terminal apparatus and a Mobility Management Entity (MME) with identification information indicating supported and allowed mobility types, enabling the establishment of connectivity and communication paths tailored to the mobility capabilities of terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single mobility management procedure is used for all terminals, then the system complexity is reduced, but the adaptability to different terminal mobility types deteriorates
Solution Approach 1:
The mobility management procedure is segmented into different types (first mobility management procedure for high mobility terminals, second mobility management procedure for low mobility terminals). Each procedure is tailored to specific terminal requirements, enabling differentiated service while maintaining manageable complexity through clear procedure separation.
Solution Approach 2:
The system dynamically selects and switches between different mobility management procedures based on terminal capability information exchanged during attach procedures. This dynamic adaptation allows the network to optimize mobility management for each terminal type without requiring multiple static complex systems.
2Speed
If mobility management is optimized for high-speed communication terminals, then communication speed is improved, but power consumption increases
Solution Approach 1:
Different mobility management procedures are applied to different terminal types based on their specific requirements. High mobility terminals receive procedures optimized for speed with higher power consumption, while low mobility terminals receive procedures optimized for power efficiency. This local optimization ensures each terminal operates with appropriate parameters for its use case.
3Adaptability or versatility
If detailed mobility capability specification is implemented, then terminal adaptability is improved, but the difficulty of detecting and measuring mobility types increases
Solution Approach 1:
The system incorporates feedback mechanisms where terminals provide capability information during attach procedures, and the network responds with appropriate mobility management procedures. This feedback loop enables accurate detection of terminal mobility types through standardized information exchange, making the detection process manageable despite the variety of terminal capabilities.
Data Source
AI summary
First identification information is information indicating a mobility type supported by a core network, and second identification information is information indicating a mobility type allowed by the core network. A communication control method for a terminal apparatus of the present invention includes a step of receiving an attach accept message from the core network via a base station apparatus, the attach accept message including at least the first identification information and/or the second identification information. Accordingly, there is provided a communication procedure that is suited to the determination of a mobility type of a terminal.