Terminal-to-Cell Positioning Signaling for Low-Latency PRS Triggering
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Solution Overview
Problem
The uncontrollability of high-layer delays in the positioning process leads to situations where positioning reference signals cannot be triggered in time, affecting the timeliness of positioning services.
Innovation Solution
A method and apparatus that allow a terminal to transmit first signaling to activate or deactivate the transmission of positioning-related signals by serving and neighboring cells, enabling timely acquisition of positioning reference signals and optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If positioning service request is transmitted through AMF to LMF, then positioning processing can be completed, but high-layer delays cause timing issues in triggering positioning reference signals
Solution Approach 1:
The patent extracts the positioning reference signal transmission control from the traditional AMF-LMF path and establishes a direct terminal-to-cell signaling path. The terminal directly sends positioning reference signal triggering requests to the serving cell or neighboring cell, bypassing the high-layer delay-prone AMF-LMF path for the actual signal triggering, thus reducing positioning time while maintaining manageable system complexity
Solution Approach 2:
The patent introduces the serving cell and neighboring cell as intermediaries between the terminal and the positioning reference signal transmission. These cells receive positioning service requests directly from terminals and control the transmission of positioning reference signals locally, eliminating the need for complex high-layer signaling through AMF and LMF for timing-critical operations
2Loss of time
If terminal directly activates positioning-related signals with target cell, then positioning timeliness is improved, but signaling management complexity increases
Solution Approach 1:
The patent segments the positioning signaling into two parts: configuration signaling (handled by LMF via AMF for non-time-critical setup) and triggering signaling (handled directly between terminal and cell for time-critical activation). This segmentation allows the terminal to directly activate positioning signals with target cells rapidly, while the network maintains overall signaling management through configured protocols and procedures
Data Source
AI summary
This application discloses a positioning processing method and apparatus, and a device, and relates to the field of communications technologies. The method is applied to a terminal, and includes: transmitting first signaling to a target cell, where the first signaling is used for activating or deactivating transmission of a positioning-related signal by the target cell of the terminal; and the target cell includes a serving cell and/or a neighboring cell of the terminal.