Dual-Connectivity Mobile Network Adaptation for Handover Reliability
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Solution Overview
Problem
Existing mobile networks face challenges with increased handover failures and radio link failures in heterogeneous networks due to short handover regions and interference, making it difficult to maintain connectivity during cell transitions, especially in scenarios involving dual connectivity and dense cell deployments.
Innovation Solution
Implementing a system where a terminal is connected to both an anchor and booster nodes, allowing for duplicate data transmission and quality degradation detection, enabling adaptive network adjustments by determining and adapting connections based on quality degradation information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a terminal is connected to multiple access nodes in heterogeneous networks, then connectivity coverage is improved, but handover failure rate increases due to short handover regions and interference
Solution Approach 1:
The system performs preliminary quality degradation detection by continuously monitoring connection quality metrics before handover is triggered. This allows the network to identify deteriorating connections early and initiate handover procedures proactively, preventing handover failures caused by short handover regions.
Solution Approach 2:
The system implements feedback mechanisms where quality degradation information from multiple access nodes is continuously reported to the network controller. This feedback enables dynamic adjustment of handover parameters and real-time optimization of connection quality, improving handover reliability in heterogeneous networks.
2Reliability
If duplicate data transmission is implemented across multiple connections, then connection reliability is improved, but network resource consumption increases
Solution Approach 1:
The system implements partial redundancy by transmitting duplicate data only when quality degradation is detected or during critical handover phases, rather than continuously. This reduces unnecessary network resource consumption while maintaining connection reliability when needed.
Solution Approach 2:
The system dynamically adjusts transmission parameters such as redundancy level, data rate, and resource allocation based on real-time connection quality metrics. When connection quality is good, parameters are optimized for efficiency; when degradation is detected, parameters shift toward reliability, balancing resource consumption and connection reliability.
Data Source
AI summary
In a method for adapting a mobile network, a terminal is connected to a first access node of the mobile network via a first connection and to a second access node via a second connection. The first access node controls a data transmission for the terminal and the second access node assists in the data transmission for the terminal. The method comprises determining whether a quality of at least one of the first connection and the second connection is degraded, acquiring quality degradation information about the degradation of the quality of at least one of the first connection and the second connection based on the step of determining, and adapting the mobile network based on the step of acquiring.