Handover Trigger Configuration for PSCell Success Reporting
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Solution Overview
Problem
The configuration of triggering conditions for recording successful primary secondary cell (PSCell) reports (SPRs) during primary cell (PCell) handovers is unclear, leading to potential misalignment and inefficient optimization of mobility parameters.
Innovation Solution
A method is provided to configure triggering conditions for recording SPRs during PCell handovers, involving the exchange of information between master nodes and terminal devices to explicitly define timers and thresholds for recording SPRs and successful handovers, ensuring clear identification of applicable timers and thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the target master node configures triggering conditions for SHR recording during PCell handover, then the handover optimization can be performed, but the configuration of triggering conditions for SPR recording becomes unclear
Solution Approach 1:
The patent segments the triggering condition configuration into two distinct parts: one for SHR (successful handover report) and one for SPR (successful PSCell report). The target master node configures the SHR triggering condition (T304 timer) while the source master node configures the SPR triggering condition (T310 and T312 timers). This segmentation resolves the contradiction by clearly assigning responsibility for each triggering condition to the appropriate node, preventing information loss while maintaining reliable optimization.
2Adaptability or versatility
If the target master node determines to add or change PSCell during PCell handover, then the PSCell change is achieved, but the manner of configuring triggering condition for SPR recording is unclear
Solution Approach 1:
The patent introduces the source master node as an intermediary in the triggering condition configuration process. When the target master node determines to add or change PSCell, it communicates with the source master node, which then conveys the SPR triggering condition configuration to the terminal device. This intermediary role resolves the contradiction by maintaining the target master node's adaptability in PSCell management while distributing the configuration complexity to the source master node.
3Measurement precision
If multiple triggering conditions are configured for different reports, then the recording accuracy is improved, but the configuration complexity increases
Solution Approach 1:
The patent merges the configuration process of multiple triggering conditions into a coordinated workflow. The target master node configures the T304 timer for SHR, while the source master node configures T310 and T312 timers for SPR. Although multiple timers are used for accurate recording, their configurations are merged into a unified handover and PSCell change process, with clear indications of which timer corresponds to which report type. This reduces the perceived complexity while maintaining recording accuracy.
Data Source
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AI summary
Embodiments of this application provide a communication method and apparatus. In the communication method, a target secondary node sends, to a target master node, a first triggering condition of a successful handover report SPR that records successful addition of the target secondary node or a successful change to the target secondary node, and the target master node sends, to a terminal device, the first triggering condition and a second triggering condition of a successful handover report SHR that records a successful handover to the target master node, so that a triggering condition of recording of the SPR may be configured for the terminal device in a scenario in which a master node handover causes a master secondary node change.