V2X Service Continuity via Pre-Configured Spectrum Switching
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Solution Overview
Problem
LTE V2X communication experiences poor continuity and service interruptions due to changes in vehicle location, as the source and target cells may use the same or different V2X transmission technologies, leading to latency issues that exceed the required low latency for road traffic safety.
Innovation Solution
A vehicle-to-everything (V2X) service processing method and apparatus that obtain pre-configuration information or V2X configuration information of a target area, allowing the terminal device to switch between licensed and unlicensed spectra, and determine the use of pre-configuration resources for seamless communication, ensuring continuity by adapting to different transmission technologies in the source and target areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle moves between source and target cells using LTE V2X communication, then the vehicle can maintain connectivity, but the service continuity deteriorates due to interface switching between PCS and Uu interfaces
Solution Approach 1:
The patent applies preliminary action by pre-configuring V2X parameters and determining the appropriate interface (PCS or Uu) before the vehicle actually moves into the target cell. The network device determines the V2X interface in advance based on predicted vehicle movement, so that when the vehicle enters the target cell, the interface is already configured and ready, avoiding service interruption and reducing latency during handover.
2Reliability
If the network device determines V2X interface in advance for target cell, then the service continuity improves, but the network device complexity increases
Solution Approach 1:
The network device performs preliminary determination of V2X interface configuration before the vehicle enters the target cell. By predicting vehicle movement and pre-configuring the appropriate interface (PCS or Uu), the network device avoids complex real-time decision-making during handover, actually simplifying the control logic while improving service continuity.
3Adaptability or versatility
If the vehicle switches between licensed and unlicensed spectrum, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The terminal device receives pre-configured V2X parameters from the network device before moving to the target cell, including information about which spectrum (licensed or unlicensed) and interface (PCS or Uu) to use. This preliminary configuration allows the device to adapt to different spectrum types without complex real-time decision-making, reducing device complexity while maintaining high adaptability.
Data Source
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AI summary
Disclosed are a vehicle-to-everything (V2X) service processing method and apparatus and a V2X system. The V2X service processing method includes that: a terminal device obtains pre-configuration information or V2X configuration information of a target area, and sends and/or receives a corresponding V2X service in the target area by using a licensed spectrum or an unlicensed spectrum according to the pre-configuration information or V2X configuration information of the target area. Embodiments of the present invention solve the problem in the existing LTE V2X communication that the V2X service has a poor continuity and is interrupted since the vehicle is usually in a moving process.