Sidelink Positioning Signal Handling During Sync Source Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Unclear terminal behavior during sidelink synchronization source selection or reselection affects the efficiency of sidelink positioning in NR systems, leading to potential disruptions in sidelink communication.
Innovation Solution
A method and apparatus for clarifying sidelink positioning reference signal processing behaviors during synchronization source selection or reselection, including normal transmission or reception based on configuration information and prioritization of synchronization sources, and determining target measurement periods to ensure smooth sidelink positioning and improve communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal behavior during synchronization source selection or reselection is not clearly defined, then sidelink positioning reference signal transmission may be disrupted, but communication efficiency and positioning accuracy deteriorate
Solution Approach 1:
The patent applies preliminary action by pre-configuring priority relationships between multiple synchronization sources before sidelink positioning occurs. The terminal device stores configuration information indicating priority orders of synchronization sources in advance, enabling it to quickly determine which synchronization source to use during positioning without real-time decision delays, thus maintaining both reliability and efficiency during source selection or reselection events
2Stability of the object's composition
If terminal devices drop sidelink positioning reference signal transmission during synchronization source selection, then synchronization stability improves, but positioning measurement accuracy deteriorates
Solution Approach 1:
The patent applies local quality by differentiating terminal behavior based on the specific state of synchronization source selection. When the terminal selects or reselects a synchronization source, it drops the sidelink positioning reference signal only during the transition period when switching between sources. Once stabilization is achieved, normal signal transmission resumes. This localized dropping approach maintains synchronization stability while minimizing impact on positioning accuracy
3Measurement precision
If measurement period is extended to compensate for dropped signals, then positioning accuracy is maintained, but time consumption increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the measurement period based on whether synchronization source selection or reselection is occurring. When dropping of sidelink positioning reference signals is detected, the terminal extends the measurement period to accumulate sufficient samples for accurate positioning. Once normal transmission resumes, the measurement period returns to standard duration, thus maintaining accuracy only when necessary and minimizing time loss
Data Source
AI summary
This application discloses a sidelink positioning reference signal processing method and apparatus, a terminal, and a storage medium, pertaining to the field of communication technology. A sidelink positioning reference signal processing method according to an embodiment of this application includes the following steps: performing, by a first terminal, a first behavior based on configuration information during selection or reselection of a target synchronization source; where the first behavior includes one of the following behaviors: normally transmitting or normally receiving a sidelink positioning reference signal; and dropping transmission or reception of the sidelink positioning reference signal; and the configuration information is used to configure priorities of multiple synchronization sources.