Conditional Handover Configuration for Dual-Connectivity Cell Changes
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Solution Overview
Problem
The existing 5G networks face challenges in managing frequent cell handovers due to smaller cell radii and higher frequency bands, particularly in dual connectivity scenarios, leading to inefficiencies in handover processes and potential failures in secondary cell group configurations.
Innovation Solution
Implementing a communication method that includes configuring terminal devices with first and second execution conditions for evaluating conditional handover and conditional primary secondary cell addition/change candidate cells, enabling efficient handover decisions in dual connectivity scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If 5G networks use higher frequency bands with smaller cell radii, then network capacity and coverage are improved, but cell handover frequency increases significantly
Solution Approach 1:
The patent implements conditional handover (CHO) where the terminal device is pre-configured with multiple candidate cells and their corresponding execution conditions. The terminal evaluates these conditions locally and autonomously executes handover when conditions are met, without real-time network intervention. This preliminary configuration approach resolves the contradiction by preparing handover options in advance, reducing the frequency and complexity of actual handover operations in dense 5G networks with small cell radii.
2Productivity
If conditional handover is implemented without considering dual connectivity scenarios, then handover efficiency is improved, but handover failures occur in DC scenarios
Solution Approach 1:
The patent applies different execution conditions for different handover scenarios: first execution conditions for conventional CHO candidate cells and second execution conditions for conditional PSCell addition/change (CPA/CPC) candidate cells in dual connectivity scenarios. This localized differentiation ensures that handover procedures are optimized for their specific context, resolving the contradiction between handover efficiency and reliability by treating DC scenarios with specialized handling rather than a one-size-fits-approach.
3Device complexity
If the terminal device lacks configuration information for evaluating CPA/CPC candidate cells, then device complexity is reduced, but handover capability is insufficient
Solution Approach 1:
The patent creates a universal configuration framework where the terminal device receives a unified set of configuration information that encompasses both conventional CHO and DC-specific CPA/CPC scenarios. The configuration includes execution conditions that can handle multiple handover types (CHO, CPA, CPC) within a single framework, allowing the terminal to adapt to different network scenarios without requiring separate complex configuration sets, thus resolving the contradiction between device complexity and handover capability.
Data Source
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AI summary
Provided in the embodiments of the present application are a communication method and apparatus, and a device, a storage medium, a chip, a product and a program. The method comprises: a terminal device receiving first configuration information, wherein the first configuration information comprises at least one first execution condition and at least one second execution condition; and the at least one first execution condition is used for evaluating at least one conditional handover (CHO) candidate cell, and the at least one second execution condition is used for evaluating at least one conditional primary secondary cell addition/conditional primary secondary cell change (CPA/CPC) candidate cell.