Candidate Cell Measurement Priority for Faster Handover Reporting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communications systems, existing handover procedures face inefficiencies due to insufficient knowledge of candidate cells, leading to suboptimal handover decisions and increased reporting latency and power consumption, as UEs prioritize cells with high L1-RSRP that may be less ideal for throughput and have higher cell loads.
Innovation Solution
A network entity provides assistance information to UE for prioritizing candidate cell measurements, indicating measurement priority per cell and frequency, improving handover efficiency and performance by optimizing the reporting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If UEs prioritize cells with high L1-RSRP for handover measurements, then measurement simplicity is improved, but handover performance deteriorates due to selecting less ideal candidate cells with higher cell loads
Solution Approach 1:
The patent changes the measurement priority parameter from solely L1-RSRP to a composite parameter that includes L1-RSRP, cell load, and throughput. This allows the system to balance between measurement simplicity and handover performance by incorporating multiple factors into the priority determination
Solution Approach 2:
The network entity pre-calculates and provides assistance information to the UE about candidate cell priorities before the UE performs measurements. This preliminary action allows the UE to focus measurements on prioritized cells, improving both efficiency and performance
2Measurement precision
If UEs measure all candidate cells without prioritization, then measurement accuracy is improved, but reporting latency increases
Solution Approach 1:
The patent extracts only the most relevant candidate cells for measurement based on pre-calculated priorities and assistance information. Instead of measuring all candidate cells, the UE focuses on a prioritized subset, reducing measurement time and reporting latency while maintaining accuracy for the most suitable handover targets
Solution Approach 2:
The network entity performs preliminary filtering and prioritization of candidate cells before the UE conducts measurements. This preliminary action identifies the most suitable candidate cells in advance, allowing the UE to concentrate measurement resources on high-priority cells and reduce overall reporting latency
3Measurement precision
If UEs measure all candidate cells without prioritization, then measurement completeness is improved, but power consumption increases
Solution Approach 1:
The patent extracts and focuses measurement efforts only on prioritized candidate cells that are most suitable for handover. By removing unnecessary measurements of low-priority cells, the system maintains measurement completeness for relevant targets while significantly reducing power consumption
Solution Approach 2:
The network entity performs preliminary identification and prioritization of candidate cells before the UE begins measurements. This allows the UE to know in advance which cells require measurement, avoiding wasted energy on measuring cells that are not suitable handover targets
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for handover candidate cell measurement priority. An example method, performed at a user equipment (UE), generally includes obtaining assistance information for prioritized cell measurement reporting for a set of candidate cells, wherein the UE supports triggered mobility to switch between the candidate cells, measuring reference signals (RSs), wherein each of the RSs is associated with one of the candidate cells, generating, based on the measuring, a report that indicates at least one measured metric for different candidate cells that are selected in accordance the assistance information, and transmitting the report.