Cross-Network V2X Synchronization for LTE and NR Direct Communication
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Solution Overview
Problem
Existing V2X communication technologies, such as LTE, lack the capability to support higher communication rates, shorter delays, and more reliable communication quality required for new V2X services, necessitating the adoption of New Radio (NR) V2X communication.
Innovation Solution
A method and device for V2X synchronization that utilizes synchronization signals from different communication networks (LTE and NR) to determine a synchronization reference signal, enabling efficient communication by using priority rules and flexible broadcast strategies to enhance synchronization efficiency, flexibility, and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LTE V2X communication is used, then basic V2X applications on security are supported, but communication rate, delay, and reliability are insufficient for new V2X services
Solution Approach 1:
The patent transitions from LTE to NR V2X communication, changing key communication parameters including subcarrier spacing, cyclic prefix length, and resource allocation schemes to achieve higher communication rates and lower delays while maintaining reliability through enhanced synchronization mechanisms
2Adaptability or versatility
If synchronization signals from multiple networks are utilized, then synchronization efficiency and flexibility are improved, but system complexity increases
Solution Approach 1:
The terminal device is designed to universally support both LTE and NR V2X synchronization signals, using a unified processing mechanism that can handle multiple network types through a single synchronization framework, thereby reducing complexity while maintaining flexibility
Solution Approach 2:
The patent introduces a synchronization reference signal as an intermediary that mediates between LTE and NR networks, allowing the terminal to synchronize with multiple networks through a standardized reference that simplifies the synchronization process
Data Source
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AI summary
Provided are a vehicle-to-everything synchronization method and device. The method is used for a first terminal, wherein the first terminal can simultaneously support first-type vehicle-to-everything direct communication and second-type vehicle-to-everything direct communication. The method comprises: receiving at least one first synchronization signal, wherein the first synchronization signal is a synchronization signal for the first-type vehicle-to-everything direct communication and/or the second-type vehicle-to-everything direct communication; determining a synchronization reference signal for the second-type vehicle-to-everything direct communication according to the first synchronization signal; and performing the second-type vehicle-to-everything direct communication according to the synchronization reference signal. Therefore, according to the present disclosure, a synchronization signal of one type of network can be used to provide a synchronization reference signal for another type of network communication, and the synchronization efficiency of vehicle-to-everything can also be realized.