LTE-V IoV Test System Resolving DSRC Latency and Reliability
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Solution Overview
Problem
Current Internet of Vehicles communication systems, particularly those using DSRC, face challenges with high latency and packet loss in dense traffic areas and high-speed scenarios, while LTE-V offers improved anti-jamming capabilities and coverage but lacks practical evaluation methods, hindering its development and marketization.
Innovation Solution
An LTE-V based Internet of Vehicles communication test system comprising an ENodeB base station, roadside test unit, user test terminal, LTE-V core network, and local server group, enabling wireless communication testing and data storage, with dual-cell configuration and multi-mode RF transceivers for comprehensive performance evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If DSRC standard is employed for Internet of Vehicles communication, then the system can operate independently without base stations, but the latency increases and packet loss rate increases in dense traffic areas
Solution Approach 1:
The patent introduces ENodeB base stations as intermediary nodes in the communication system. These base stations coordinate resource allocation and manage communication between vehicles, replacing the direct peer-to-peer DSRC approach. The base stations act as mediators that reduce packet loss and latency by providing centralized control and retransmission capabilities in dense traffic scenarios.
Solution Approach 2:
The patent implements feedback mechanisms through the base station network that monitor communication quality and dynamically adjust resource allocation. The system collects data on packet loss and latency, feeds this information back to the network controller, and uses it to optimize communication parameters, thereby improving overall reliability and reducing delays.
2Device complexity
If DSRC standard is employed for Internet of Vehicles communication, then the system structure is simple, but the transmission distance is obviously shorter and anti-jamming ability is weak
Solution Approach 1:
The patent makes the communication system multi-functional by integrating both DSRC direct communication capabilities and LTE-V cellular communication capabilities. The system can automatically switch between modes or use them complementarily, providing extended transmission distance and enhanced anti-jamming ability while maintaining the simplicity of DSRC where applicable.
Solution Approach 2:
The patent creates a composite communication system that combines DSRC and LTE-V technologies. This hybrid approach leverages the strengths of both systems: DSRC's low latency for short-range communication and LTE-V's extended range and robustness for long-range and jammed environments, achieving superior overall performance.
3Reliability
If LTE-V technology is deployed, then the coverage is extensive and anti-jamming ability increases, but there is no practical evaluation method available
Solution Approach 1:
The patent implements self-service evaluation capabilities where the test system automatically collects, analyzes, and reports performance data without requiring external evaluation infrastructure. The system includes built-in test modes that autonomously assess anti-jamming ability, transmission reliability, and other key metrics, making evaluation as easy as deploying the system.
Solution Approach 2:
The patent replaces complex manual evaluation methods with automated electronic testing and data analysis systems. The evaluation process is transformed from a manual, mechanical procedure to an automated computational process that collects performance data, processes it through algorithms, and generates comprehensive reports automatically.
4Length of stationary object
If LTE-V technology is deployed, then remote information transmission is supported, but mobile network infrastructure requires significant investment
Solution Approach 1:
The patent merges LTE-V cellular communication with existing mobile network infrastructure rather than building a separate dedicated network. By utilizing the existing 4G/5G base station infrastructure, the system achieves extensive coverage and remote transmission capabilities without duplicating network investments, significantly reducing deployment costs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system supports low-latency, reliable communication services and provides realistic research data for LTE-V technology, promoting its application in intelligent transportation by systematically testing network performance in real scenarios.
Implementation Method 1
The multi-mode RF transceiver module includes a physical antenna, an RF driven module, an RF module, a positioning drive module and a positioning module, which are configured to receive data from the other user test terminals, send data to the other user test terminals and the roadside terminals or exchange data with the ENodeB base station
Data Source
AI summary
Disclosed is an LTE-V based Internet of Vehicles communication test system and test method. The test system includes an ENodeB base station, a roadside test unit, user test terminal, LTE-V core network and local server group. Mobile communication technology is applied to the field of Internet of Vehicles communication, and two technical schemes are used, i.e., wide-area centralized cellular communication and short-range distributed direct communication corresponding to the network architectures based on access network-user terminal and ProSe direct communication interface, respectively. Not only the communication transmission support with large broadband in wide coverage can be supported, but also to achieve low latency and highly reliable communication services between vehicle and vehicle, vehicle and base station, base station and base station, to meet the needs of road safety and traffic efficiency applications.