Abstract

As one of the mainstream technologies of vehicle-to-everything (V2X) communication, Cellular-V2X (C-V2X) provides high reliability and low latency V2X communications. And with the development of mobile cellular systems, C-V2X is evolving from long-term evolution-V2X (LTE-V2X) to new radio-V2X (NR-V2X). However, C-V2X test specification has not been completely set in the industry. In order to promote the formulation of relevant standards and accelerate the implementation of industrialization, the field test and analysis based on LTE-V2X in the industrial park scenario is conducted in this paper. Firstly, key technologies of LTE-V2X are introduced. Then, the specific methods and contents of this test are proposed, which consists of functional and network performance tests to comprehensively evaluate the communication property of LTE-V2X. Static and dynamic tests are required in both line-of-sight (LOS) and non-line-of-sight (NLOS) scenarios to evaluate network performance. Next, the test results verify that all functions are normal, and the performance evaluation indexes are appraised and analyzed. Finally, it summarizes the whole paper and puts forward the future work.

Highlights

  • Internet of Vehicles (IoV) refers to the realization of a comprehensive network connection of vehicle-to-everything (V2X) with the help of a new generation of information and communication technology

  • The key technologies applied in long-term evolution-V2X (LTE-V2X) are introduced

  • Four demodulation reference signal (DMRS) signals are introduced in each subframe to counter the Doppler effect caused by high-speed movement, and two methods of resource reuse (FDM and TDM) and resource allocation are adopted

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Summary

Introduction

Internet of Vehicles (IoV) refers to the realization of a comprehensive network connection of vehicle-to-everything (V2X) with the help of a new generation of information and communication technology. In the future autonomous driving, V2X communication technology is one of the important technologies to realize environmental perception It can complement the advantages of traditional vehicle-mounted laser radar, camera, and other vehicle-mounted equipment, so as to provide vehicles with beyond-line-of-sight and complex environment awareness that cannot be realized by radar. In this way, the vehicle’s perception range of traffic and surroundings can be expanded from the dimension of time and space, so that the vehicle has the ability to make multi-information fusion decisions [3]

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