Sidelink Synchronization Relay Across Multiple Channels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Sensing UEs operating on multiple channels often fail to synchronize with each other, leading to interference due to lack of synchronization across different channels.
Innovation Solution
A communication method involving terminal devices that receive sidelink synchronization signals from a synchronization source, select and send secondary synchronization signals based on priority and power criteria to synchronize other devices across channels, reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a sensing UE operates on multiple channels, then the sensing UE can perform sensing on multiple channels simultaneously, but the sensing UE cannot be synchronized with sensing UEs on all channels, leading to interference
Solution Approach 1:
The patent segments the frequency domain units into multiple groups and assigns different synchronization signal sets to different groups. This allows a sensing UE to operate on multiple channels while maintaining synchronization through structured segmentation of frequency resources.
Solution Approach 2:
The patent introduces a new dimension of synchronization by having UEs synchronize not only within their operating channels but also by receiving and forwarding synchronization signals across other channels. This multi-dimensional synchronization approach resolves the contradiction between multi-channel operation and synchronization accuracy.
2Device complexity
If sensing UEs operate on the same channel without synchronization, then device complexity is reduced, but mutual interference occurs between different sensing UEs
Solution Approach 1:
The patent introduces synchronization signals as intermediary elements that mediate between different sensing UEs. These signals carry timing and frequency reference information, enabling UEs to synchronize their operations without complex direct coordination mechanisms, thus reducing device complexity while preventing interference.
Solution Approach 2:
Each sensing UE autonomously acquires synchronization signals from other UEs and adjusts its own timing and frequency based on these signals. This self-service synchronization approach eliminates the need for centralized coordination, reducing device complexity while ensuring interference-free operation.
3Reliability
If a sensing UE receives synchronization signals from multiple sources, then synchronization coverage is improved, but selecting the appropriate synchronization source becomes more complex
Solution Approach 1:
The patent changes the parameters of synchronization signals by assigning different frequency domain unit patterns and signal characteristics to different synchronization sources. This allows receiving UEs to distinguish and select appropriate synchronization sources based on signal parameters, improving synchronization coverage while simplifying source selection through parameter-based differentiation.
Data Source
AI summary
This application relates to a communication method, apparatus and computer-readable storage medium. A first terminal device receives a first sidelink synchronization signal from a second terminal device in M frequency domain units, where the M frequency domain units are a part of all frequency domain units supported by the first terminal device, and M is a positive integer. When a first condition is satisfied, the first terminal device selects the second terminal device as a synchronization source and sends a second sidelink synchronization signal based on the first sidelink synchronization signal. According to embodiments of this application, all terminal devices on different channels can be synchronized with the second terminal device, so that the terminal devices on the plurality of channels are synchronized, and interference between them is reduced.