Terminal Mobility Detection Using Serving and Neighbor Cell Signals
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Solution Overview
Problem
The signal quality of a serving cell cannot accurately reflect the mobility state of a terminal device, leading to potential errors in relaxed positioning measurements, which are based on mobility criteria.
Innovation Solution
Determine whether to perform relaxed positioning measurements by considering the signal quality of both the synchronization signal block (SSB) of the serving cell and the signal quality of neighbor cells, refining the determination of the terminal device's mobility state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If relaxed positioning measurement is performed based solely on serving cell signal quality, then power consumption is reduced, but measurement accuracy deteriorates
Solution Approach 1:
The patent combines serving cell signal quality (RSRP/RSRQ) with neighbor cell signal quality to determine relaxed positioning measurement. This merging of multiple measurement dimensions allows the terminal to maintain positioning accuracy while reducing power consumption by selectively applying relaxed measurement criteria based on the combined assessment of multiple cells rather than relying solely on serving cell measurements.
2Device complexity
If relaxed positioning measurement is performed based on serving cell signal quality alone, then measurement complexity is reduced, but mobility state determination accuracy deteriorates
Solution Approach 1:
The patent merges serving cell measurements with neighbor cell measurements to improve mobility state determination accuracy. By combining RSRP and RSRQ measurements from both serving and neighbor cells, the system achieves more accurate mobility state detection without significantly increasing measurement complexity, as the additional measurements leverage existing measurement capabilities.
3Ease of operation
If only serving cell signal quality is considered, then the determination process is simplified, but reliability of mobility state determination deteriorates
Solution Approach 1:
The patent combines multiple determination criteria including serving cell RSRP, serving cell RSRQ, and neighbor cell RSRP to improve reliability. This multi-factor determination approach maintains operational simplicity by using standardized measurement parameters while significantly enhancing reliability through the corroborative evidence from multiple cells and measurement types.
Solution Approach 2:
The system uses feedback from multiple measurement sources (serving cell and neighbor cell signal qualities) to dynamically determine whether relaxed positioning measurement should be applied. This feedback mechanism ensures reliable mobility state determination by continuously monitoring multiple parameters and adjusting the measurement strategy accordingly.
Data Source
AI summary
A method for wireless communication includes: a terminal device determines whether to perform relaxed positioning measurement based on first information, the first information being associated with one or more of the following: a signal quality of a synchronization signal block (SSB) of a serving cell; and a signal quality of a neighbor cell.