Conditional Handover Cell Selection Using Stored Historical Configurations
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication systems face issues with control channel resource congestion and power consumption due to frequent handovers, particularly in high-speed and high-frequency scenarios, leading to potential loss of network coverage for terminal devices.
Innovation Solution
Terminal devices store historical configuration information for conditional handover, allowing them to perform handovers using previously acquired configuration data, reducing the need for continuous network-side signaling and minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal devices acquire handover command from network side before each cell handover, then handover reliability is improved, but control channel resource consumption increases and terminal power consumption increases
Solution Approach 1:
The network side pre-configures conditional handover information including target cell configuration and handover execution conditions before the terminal needs to handover. The terminal stores this information locally and automatically executes handover when conditions are met, eliminating the need for real-time network signaling during handover and reducing terminal power consumption while maintaining reliability
Solution Approach 2:
The terminal device autonomously monitors handover conditions and executes handover decisions based on pre-configured information without continuous network control. This self-service mechanism reduces dependency on network-side signaling and lowers terminal power consumption while ensuring handover reliability through predetermined configurations
2Reliability
If terminal devices acquire handover command from network side before each cell handover, then handover reliability is improved, but control channel resource consumption increases
Solution Approach 1:
The network side pre-configures conditional handover information including target cell configuration and handover execution conditions before the terminal needs to handover. The terminal stores this information locally and automatically executes handover when conditions are met, eliminating the need for real-time network signaling during handover and reducing control channel resource consumption while maintaining reliability
Solution Approach 2:
The terminal device autonomously monitors handover conditions and executes handover decisions based on pre-configured information without continuous network control. This self-service mechanism reduces dependency on network-side signaling and lowers control channel resource consumption while ensuring handover reliability through predetermined configurations
3Reliability
If conditional handover configuration is provided for each target cell, then handover reliability is improved, but terminal device memory consumption increases
Solution Approach 1:
The patent extracts only the essential handover configuration information (target cell parameters and execution conditions) that the terminal needs to autonomously execute handover. By taking out only the necessary configuration elements rather than complete handover commands, the terminal can maintain handover reliability while reducing memory consumption for storing conditional handover information
Data Source
AI summary
A method for determining a candidate target cell and a terminal device are provided in the present disclosure. The method includes determining target configuration information from a plurality of pieces of configuration information stored for conditional handover, wherein the plurality of pieces of configuration information includes at least one piece of historical configuration information, which is acquired from a historical service cell in response to the terminal device accessing to the historical service cell; and determining a cell corresponding to the target configuration information as the candidate target cell, in response to a handover condition corresponding to the target configuration information being met.