Wireless Communication Reference Signal Index Segmentation for Network Optimization
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Solution Overview
Problem
Current 5G systems are unable to support multiple physical cells for providing transmission points, leading to loss of link failure information for single physical cells, which hampers network optimization and service quality, especially for users with simple functionality or previous versions of UEs.
Innovation Solution
A method involving the use of reference signal indexes associated with multiple Physical Cell Identifiers (PCIs) for assessing radio link quality and generating link observation records, allowing for the reporting of link failure information even in the absence of actual link failures, thereby enabling comprehensive network optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple physical cells are used to provide transmission points, then network optimization capability is improved, but system complexity increases and compatibility with existing UEs deteriorates
Solution Approach 1:
The patent segments the radio link monitoring function into two independent configurations: first radio link monitoring configuration for detecting RLF in the serving cell, and second radio link monitoring configuration for detecting link quality of neighbor cells. This segmentation allows multiple physical cells to be monitored without increasing overall system complexity, as each configuration operates independently with its own reference signal indexes and evaluation criteria.
Solution Approach 2:
The patent creates a universal reporting mechanism that handles both traditional RLF detection and new link quality monitoring results through a unified failure information report. The report structure can accommodate measurements from multiple physical cells using different PCIs, making the system multi-functional without requiring separate reporting procedures for each cell type.
2Loss of information
If link failure information is reported for single PCI cells, then information completeness is improved, but reporting overhead increases
Solution Approach 1:
The patent merges the reporting of RLF information and link quality information into a single unified failure information report. The report contains both the traditional RLF detection result from the serving cell and the link quality measurement results from neighbor cells with different PCIs. This combining approach ensures information completeness while minimizing reporting overhead by transmitting all relevant data in one message rather than multiple separate reports.
3Measurement precision
If reference signals from different physical cells are configured together, then radio link monitoring accuracy is improved, but configuration complexity increases
Solution Approach 1:
The patent segments reference signal configuration into two distinct sets: first reference signal indexes associated with the serving cell PCI, and second reference signal indexes associated with neighbor cell PCIs. Each set is independently configured and evaluated, which improves measurement precision by allowing separate optimization for each cell type while keeping configuration management organized and systematic rather than chaotic.
Solution Approach 2:
The patent applies local quality by allowing different evaluation criteria and thresholds for different reference signal sets. The first radio link monitoring configuration uses criteria optimized for serving cell RLF detection, while the second configuration uses criteria optimized for neighbor cell link quality assessment. This localized optimization improves overall monitoring accuracy without requiring a single complex unified configuration.
Data Source
AI summary
The present application discloses a method and device for wireless communications, comprising receiving a first message, the first message being used to indicate a first reference signal index set and a second reference signal index set; the first reference signal index set and the second reference signal index set each at least comprise one reference signal index; any reference signal index in the first reference signal index set indicates a reference signal resource; any reference signal index in the second reference signal index set indicates a reference signal resource; at least partial reference signal indexes in the second reference signal index set belong to the first reference signal index set; the method proposed in the present application enables network optimization in the case of multiple transmission points.