Terminal Device Autonomous Path Switching Between 4G and 5G
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Solution Overview
Problem
In the context of interworking between 4G and 5G networks, existing Dual Connectivity (DC) technologies require significant involvement of the master node for switching data transmission paths, which hinders the evolution and development of 5G networks, especially in minimizing the master node's control for efficient data transmission.
Innovation Solution
A terminal apparatus is designed with an access unit for dual connectivity to both 4G and 5G networks, a determination unit that assesses radio environment information to decide on path switching based on throughput differences, and a switching unit that autonomously switches the data transmission path from the 4G network to the 5G network when the latter offers higher throughput, thereby reducing the master node's involvement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal apparatus autonomously switches data transmission path based on radio environment information, then the productivity of data transmission is improved, but the device complexity increases due to additional determination and switching units
Solution Approach 1:
The terminal apparatus autonomously determines and switches data transmission paths without requiring master node involvement. The determination unit self-evaluates radio environment information from both 4G and 5G networks, and the switching unit self-executes path switching based on throughput comparisons, enabling the system to serve itself rather than relying on external control
Solution Approach 2:
The terminal apparatus is divided into distinct functional units: an access unit for dual connectivity, a determination unit for path evaluation, and a switching unit for path execution. This segmentation allows each unit to perform its specific function independently, improving overall system productivity while managing complexity through modular design
2Ease of operation
If the master node involvement is minimized for path switching, then the ease of operation is improved, but the reliability of network control may deteriorate
Solution Approach 1:
The terminal apparatus independently performs path determination and switching operations without requiring master node control. The determination unit autonomously compares throughput of 4G and 5G paths, and the switching unit autonomously executes switching decisions, eliminating the need for master node involvement and simplifying operations
Solution Approach 2:
The determination unit continuously monitors radio environment information and throughput performance from both 4G and 5G networks. This feedback mechanism allows the terminal apparatus to make informed switching decisions based on real-time network conditions, ensuring reliable operation while maintaining ease of use
Data Source
AI summary
The present invention relates to a terminal device and a method by which a terminal device switches a data transmission path, the terminal device being capable of switching a data transmission path by determining by itself whether the data transmission path for transmission of user plane data is switched without a link, among core configurations of respective networks in a mutual interworking environment among heterogeneous networks.