Conditional Handover Success Report Feedback for Network Optimization
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Solution Overview
Problem
Current Mobility Robust Optimization (MRO) methods for Conditional Handover (CHO) do not utilize the content of handover success reports, which are crucial for adjusting network configuration parameters to optimize handover processes, leading to inefficiencies in reducing the number of configured candidate cells.
Innovation Solution
Implementing a method where a terminal device sends a handover success report after a successful CHO, including signal measurement results and candidate cell information, to help the network adjust configuration parameters, such as reducing access resources for non-meeting candidate cells and increasing resources for meeting candidate cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network configures multiple candidate cells for CHO, then the handover success rate is improved, but the resource allocation complexity and unnecessary resource usage increase
Solution Approach 1:
The patent implements a feedback mechanism where the terminal device sends a handover success report to the network device after successfully completing CHO. This report contains measurement results and handover execution information that provides feedback to the network about which candidate cells were actually needed. The network uses this feedback to optimize future CHO configurations by adjusting the number and selection of candidate cells based on actual handover patterns rather than configuring excessive candidates proactively.
2Device complexity
If the network uses traditional MRO methods without handover success report, then the configuration process is simple, but the optimization precision of handover parameters is insufficient
Solution Approach 1:
The handover success report introduces feedback into the MRO process, enabling precise optimization of handover parameters. The report contains detailed measurement results and handover execution information that allow the network to accurately assess CHO performance and adjust parameters such as handover thresholds, timing, and candidate cell selection criteria based on actual observed data rather than relying on coarse-grained traditional MRO methods.
Solution Approach 2:
The patent enables dynamic adjustment of CHO configuration parameters based on feedback from handover success reports. The network device modifies parameters such as the number of candidate cells, measurement thresholds, and handover timing settings according to the actual handover performance data received, allowing precise optimization of handover parameters to match actual network conditions and terminal behavior patterns.
3Manufacturing precision
If the terminal sends detailed handover success report, then the network optimization accuracy is improved, but the signaling overhead increases
Solution Approach 1:
The handover success report extracts and transmits only the most critical information needed for optimization, such as measurement results of candidate cells, handover execution timing, and success/failure indicators. By selecting and transmitting only essential data elements rather than complete measurement datasets, the patent reduces signaling overhead while maintaining sufficient information for effective network optimization.
Solution Approach 2:
The patent implements a balanced approach where the terminal sends a partial set of measurement results focused on candidate cells that met handover conditions, rather than transmitting all measured cell data. This partial reporting strategy provides the network with sufficient information for optimization decisions while minimizing the amount of data transmitted and the associated signaling overhead.
Data Source
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AI summary
Embodiments of the present application relate to a method for sending a handover success report, a terminal device, and a network device. The method comprises: sending a handover success report under the condition that conditional handover (CHO) is successful, the handover success report comprising at least one of the following: a result of signal measurement by a terminal device for a neighbor cell; a result of signal measurement by the terminal device for a candidate cell that does not satisfy a handover condition; a list of candidate cells that satisfy the handover condition; a list of candidate cells that do not satisfy the handover condition; an identifier of a source cell; information used for indicating whether a radio link failure (RLF) occurs in the source cell before the terminal device executes CHO; and length of time from receiving a CHO configuration to triggering CHO. The embodiments of the present application can implement reporting content of the handover success report by a terminal after CHO is successful, the content facilitating a network to adjust a configuration parameter.