LTE (long term evaluation) technology based vehicle-road communication testing platform and testing method

A vehicle-road communication and test platform technology, applied in the field of intelligent transportation, can solve problems such as difficult to meet the needs of intelligent transportation, high-quality assurance, and small coverage, and achieve the effects of promoting research and application, facilitating development and transplantation, and improving efficiency

Active Publication Date: 2014-01-22
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the existing vehicle-road communication systems use IEEE802.11-based wireless communication technology as the main access method, such as Wi-Fi, WAVE, DSRC, etc., which can realize vehicle-road communication when moving at low speed or at rest. The above-mentioned technologies have shortcomings such as small coverage, frequent switching and connection to roadside equipment during the movement of vehicles, and inability to provide high-quality guarantees for various multimedia information services, making it difficult to meet the needs of future development of intelligent transportation.
In order to overcome the above shortcomings, in recent years, some scholars and research insti

Method used

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  • LTE (long term evaluation) technology based vehicle-road communication testing platform and testing method
  • LTE (long term evaluation) technology based vehicle-road communication testing platform and testing method
  • LTE (long term evaluation) technology based vehicle-road communication testing platform and testing method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0095] Example 1: Vehicle-to-road communication test test site single cell communication test

[0096] The test object is the system throughput, time delay, packet loss rate when the vehicle-mounted test unit performs vehicle-to-road communication during vehicle driving, as well as the critical speed of the vehicle when the throughput is saturated, and the withstand voltage value of multiple terminals at the same time. Preset conditions: The system is powered on and runs normally, the cell is established normally, and the on-board test unit is successfully attached to the LTE network. The specific steps include the following:

[0097] A. When the vehicle is running, the vehicle-mounted test unit performs vehicle-to-road communication system throughput, delay, and packet loss rate tests:

[0098] a) On the test lane of the road field, the test vehicle is driving at a constant speed of 50km / h;

[0099] b) The PDN server sends data packets to the vehicle test unit at a constant flow rate...

Example Embodiment

[0111] Example 2: Communication handover test between adjacent cells of the vehicle-to-road communication test test site

[0112] The test object is the handover delay between adjacent cells when the vehicle-mounted test unit performs vehicle-to-road communication when the vehicle is traveling at different speeds. The preset conditions: the system is powered on and runs normally, the cell is established normally, and the vehicle-mounted test unit is successfully attached to On the LTE network, it specifically includes the following steps:

[0113] A. The vehicle-mounted test unit is attached to the first cell, starts at 50km / h, moves to the second adjacent cell, carries out signaling tracking on the vehicle-mounted test unit, and records the handover delay;

[0114] B. In each test, the speed is increased by 5km / h until the maximum speed limit of 120km / h is reached, and the process of step A is repeated;

[0115] C. The data recorded by the vehicle test unit is transmitted to the eNod...

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Abstract

The invention discloses an LTE technology based vehicle-road communication testing platform and a testing method. The platform comprises an eNodeB base station, an LTE core network, an application server cluster, a network management server, vehicle-mounted testing units and a road field testing lane, wherein the LTE core network, the application server cluster and the network management server are connected mutually; a convergence exchanger is connected with the eNodeB base station; the whole road field testing lane is covered with wireless signals of the eNodeB base station; high-definition cameras are mounted on the road field testing lane and connected with a video monitor server; and the vehicle-mounted testing units exchange information with the eNodeB base station. According to the testing platform and the testing method, the 4th generation mobile communication technology LTE is introduced into an ITS (intelligent transportation system) vehicle-road communication system, the vehicle-road communication testing platform and the testing method for the true environment are provided and used for performing quantitative evaluation on kernel parameters in the vehicle-road information interaction process, and a brand new solution and a verification platform are provided for vehicle-road communication application of vehicle remote monitoring, traffic information publish, wideband data transmission between a vehicle and a road and the like.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and relates to a vehicle-road communication test platform and a test method, in particular to a vehicle-road communication test platform and a test method based on LTE technology. Background technique [0002] As one of the important subsystems of ITS, the vehicle-road communication system is the key to ensure smooth communication channels between traffic participants, realize safety warning and efficient guidance for road driving, and provide passengers with professional multimedia and mobile Internet application services. At present, most of the existing vehicle-road communication systems use IEEE802.11-based wireless communication technology as the main access method, such as Wi-Fi, WAVE, DSRC, etc., which can realize vehicle-road communication when moving at low speed or at rest. The above-mentioned technologies have shortcomings such as small coverage, frequent switching a...

Claims

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Application Information

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IPC IPC(8): H04W24/00H04L29/08
Inventor 赵祥模徐志刚陈婷白国柱
Owner CHANGAN UNIV
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