Successful Handover Reporting for SN Addition and PSCell Change
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Solution Overview
Problem
In a multi-connectivity architecture, user equipment (UE) connected to a master node (MN) and secondary nodes (SN) cannot effectively record and analyze the addition or change of secondary nodes (SN) or primary secondary cells (PSCell) in a Dual Connectivity (DC) scenario.
Innovation Solution
A method and device for generating and processing a successful handover report, including obtaining configuration information for trigger conditions, generating a handover report upon meeting these conditions, and sending it to the master node (MN) to facilitate recording and analysis of SN addition or PSCell change, with specific information such as cell identifiers, measurement results, and random access information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a terminal and network side device operate in MR-DC scenario without specific handover reporting mechanisms, then the system maintains basic connectivity, but the ability to record and analyze SN addition or PSCell change problems is lost
Solution Approach 1:
The network side device pre-configures the terminal with reporting conditions and parameters before handover events occur. The terminal is provided with configuration information including trigger conditions (such as timer-based conditions like T304, T310, T312), reporting formats, and target node identification information in advance, enabling the terminal to generate accurate handover reports without real-time complex decision-making
Solution Approach 2:
The terminal generates successful handover reports containing measurement results, trigger node information, and timing data, then sends these reports to the master node. The master node forwards the reports to appropriate network nodes (SN or MN) for analysis, creating a closed-loop feedback system that enables continuous optimization of handover parameters and network configuration based on actual handover performance
2Reliability
If the terminal generates detailed handover reports with multiple information elements, then the network can perform comprehensive optimization, but the signaling overhead and processing burden increase
Solution Approach 1:
The handover report structure is designed with differentiated information elements based on their importance and usage scenarios. The report includes essential elements (triggering reason, cell identifiers, measurement results) that are always included, and optional elements (detailed measurement data, random access information) that can be selectively included based on network configuration and specific optimization needs, allowing flexible adaptation to different optimization requirements
Solution Approach 2:
The terminal generates comprehensive handover reports that include more information than the minimum required for basic handover execution. The reports contain not only essential handover confirmation data but also measurement results, timing information, and trigger node details that exceed basic requirements, providing network nodes with sufficient data for thorough analysis and optimization without requiring multiple separate reporting mechanisms
Data Source
AI summary
The present disclosure provides a method and apparatus for processing a successful handover report. The method comprises: a terminal acquiring configuration information of a first trigger condition for generating a successful handover report of a primary secondary cell; if an additional SN is accessed by the terminal or the primary secondary cell is changed, generating a first successful handover report according to the configuration information, if it is determined that the first triggering condition is met; sending the first successful handover report to a first MN accessed by the terminal.