Layer 3 Measurement CIO Selection for Reliable 5G Handover
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Solution Overview
Problem
Existing Layer 3 measurement methods in NR systems face challenges in accurately and efficiently determining cell individual offsets (CIO) due to signaling restrictions, which affect the reliability and efficiency of handover processes in 5G networks.
Innovation Solution
The method allows for providing CIO in both measurement object and report configurations, enabling the UE and base station to determine which CIO to apply based on the measurement identity and presence of CIO in these configurations, thereby enhancing the accuracy and reliability of Layer 3 measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CIO is provided only in measurement object configuration due to signaling restrictions, then signaling overhead is reduced, but measurement accuracy and handover reliability deteriorate
Solution Approach 1:
The patent segments the CIO configuration into two separate locations: measurement object configuration and report configuration. This allows the system to provide CIO information in multiple places without overwhelming signaling overhead, as each location serves a specific purpose in the measurement and reporting process.
Solution Approach 2:
The patent enables CIO to be configured in advance in both measurement object and report configuration, allowing the UE to have CIO information available before measurement reporting is triggered. This preliminary configuration ensures accurate measurement evaluation without requiring additional real-time signaling.
2Measurement precision
If CIO is provided in both measurement object and report configurations, then measurement accuracy improves, but determining which CIO to apply becomes complex
Solution Approach 1:
The patent introduces a clear selection mechanism that acts as an intermediary rule: if CIO is present in report configuration, use that value; otherwise, use the CIO from measurement object configuration. This systematic approach simplifies the decision process despite having multiple configuration locations.
Solution Approach 2:
The patent applies different roles to CIO in different configurations: report configuration CIO serves as a measurement-specific offset for triggered reports, while measurement object CIO serves as a default. This local differentiation allows each CIO to have its specific function, making the selection logic straightforward.
3Adaptability or versatility
If multiple CIO values are configured, then flexibility in measurement configuration improves, but processing complexity and potential conflicts increase
Solution Approach 1:
The patent creates a dynamic CIO configuration system where the effective CIO value can change based on which configuration location contains the parameter. This allows flexible adaptation to different measurement scenarios without requiring complex static configuration management.
Data Source
AI summary
A method for enhancing mobility performance in network where cells with varying radio capabilities and sensitivities are deployed. The method enables providing Cell Individual Offset (CIO) values for neighbor cells in efficient and flexible way so that mobility performance is enhanced with minimum overhead both in signaling and processing.