Conditional Handover Coordination for PSCell Addition and Change
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Solution Overview
Problem
The simultaneous fulfillment of Conditional Handover (CHO) and Conditional PSCell Addition/Change (CPA/CPC) events is often not achieved due to suboptimal network configuration and UE mobility, leading to inefficient dual connectivity in wireless communication.
Innovation Solution
A method and apparatus for a UE to send first information to a network device indicating the order and timing of CHO and CPA/CPC events, along with candidate cell identifiers and configuration parameters, enabling the network to optimize these events for synchronized execution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network configures CHO and CPA/CPC events independently without coordination, then the configuration is simple and fast to deploy, but the events are likely not fulfilled simultaneously leading to inefficient dual connectivity
Solution Approach 1:
The patent implements feedback mechanisms where the UE reports fulfillment status of CHO and CPA/CPC events to the network device. The network device uses this feedback to adjust and optimize event configurations, enabling coordinated fulfillment while maintaining configuration simplicity through iterative optimization based on actual UE behavior and network conditions.
Solution Approach 2:
The patent changes key parameters including event fulfillment timing relationships, candidate cell configurations, and conditional execution parameters. By optimizing these parameters, the network ensures CHO and CPA/CPC events are fulfilled in coordinated sequences, improving dual connectivity reliability without requiring fundamentally complex configuration structures.
2Reliability
If the network optimizes CHO and CPA/CPC configurations to achieve simultaneous event fulfillment, then dual connectivity performance improves, but the network optimization becomes more complex and difficult to implement
Solution Approach 1:
The patent enables the UE to autonomously measure and evaluate candidate cells for both CHO and CPA/CPC, and self-report fulfillment status to the network. This self-service approach reduces network optimization complexity by distributing measurement and evaluation functions to the UE, while the network focuses on receiving reports and making high-level configuration adjustments.
Solution Approach 2:
The patent performs preliminary configuration of candidate cells and event parameters before actual handover execution. The network pre-configures multiple candidate cells with associated CPA/CPC parameters, and pre-establishes fulfillment reporting mechanisms. This preliminary action simplifies real-time optimization by having evaluation frameworks ready in advance.
3Reliability
If the UE waits for both CHO and CPA/CPC events to be fulfilled simultaneously, then dual connectivity can be established properly, but the handover process time increases
Solution Approach 1:
The patent implements dynamic event fulfillment strategies where the UE and network can adapt fulfillment timing based on real-time conditions. The UE evaluates candidate cells dynamically and reports fulfillment status continuously. The network can adjust configurations dynamically to enable coordinated fulfillment, reducing unnecessary waiting time while ensuring proper dual connectivity establishment when conditions are met.
Solution Approach 2:
The patent performs preliminary evaluation and preparation of CPA/CPC configurations while the UE is still in the source cell. Candidate cells are pre-identified and pre-configured with necessary parameters. This preliminary action allows the UE to proceed with handover more quickly while ensuring CPA/CPC can be fulfilled in coordination with CHO, reducing overall handover time.
4Ease of operation
If the network uses traditional independent configuration methods for CHO and CPA/CPC, then configuration and deployment are straightforward, but the events are likely not fulfilled at the same time causing inefficiency
Solution Approach 1:
The patent merges the configuration and management of CHO and CPA/CPC events into a coordinated framework. The network device jointly manages both event types, considering their interdependencies. The UE reports fulfillment status of both events together, enabling the network to optimize them as an integrated system rather than separate processes, improving handover efficiency while maintaining operational simplicity through unified management.
Solution Approach 2:
The patent creates a universal fulfillment reporting mechanism that handles both CHO and CPA/CPC events through common procedures and message structures. The same reporting framework and evaluation logic apply to both event types, simplifying network operations by providing a multi-functional solution that manages diverse handover scenarios through unified processes.
Data Source
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AI summary
The present disclosure relates to the technical field of communications. Disclosed are an information transmission = method and apparatus, a terminal, a network device, and a readable storage medium. The method is applied to a terminal, and comprises: sending first information to a network device. The first information is used for indicating information related to conditional handover (CHO) and/or a first operation. The first operation is conditional primary secondary cell addition (CPA) and/or conditional primary secondary cell change (CPC). By means of the described solution, first information used for indicating information related to CHO and/or a first operation is sent to a network device, thereby assisting the network device in the configuration optimization of the CHO and/or the first operation, and reasonably configuring events corresponding to the CHO and the CP A/CPC, thus improving communication reliability.