Research and Analysis of Channel Switching of Railway 400 MHz DRTD System

doi:10.3969/j.issn.1673-4440.2025.02.010

Railway Signalling & Communication Engineering ›› 2025, Vol. 22 ›› Issue (2): 65-70.DOI: 10.3969/j.issn.1673-4440.2025.02.010

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Research and Analysis of Channel Switching of Railway 400 MHz DRTD System

Zhang Chi^{1, 2}, Zhu Hong³, Shi Quan³

1. CRSC Research & Design Institute Group Co., Ltd., Beijing 100070, China；
2. Engineering Research Center of Railway Industry of Intelligent and Autonomous Train Control, Beijing 100070, China；
3.China Railway Shanghai Group Co., Ltd., Shanghai 200071, China

Received:2024-04-10 Revised:2025-01-11 Online:2025-02-25 Published:2025-02-25

铁路400 MHz数字无线列调系统中信道切换问题研究与分析

张驰，朱红，石泉

1．北京全路通信信号研究设计院集团有限公司，北京 100070；
2．列车自主运行智能控制铁路行业工程研究中心，北京 100070；
3．中国铁路上海局集团有限公司，上海 200071

作者简介:张驰（1984—），男，高级工程师，硕士，主要研究方向：铁路无线通信，邮箱：zhangchi@crscd.com.cn

Abstract

Abstract: Targeting at the problems encountered in channel switching during the test of railway 400 MHz digital radio communication system for train dispatching, this paper studies the processing mechanism of onboard-side and ground-side channelizers during channel switching, and analyzes the problems encountered in the current experiment. It also studies an improved processing mechanism of onboard-side channelizers, and examines how to use existing protocols to improve the processing mechanism. The field experiment verifies that the improved processing mechanism can solve the problems encountered in channel switching.

Key words: digital radio communication system for train dispatching, vehicle-mounted radio, channel switching, idle frame, switching request

摘要： 针对铁路400 MHz数字无线列调系统试验过程中信道切换时遇到的问题，研究切换信道时车载侧和地面侧信道机的处理机制，分析试验中遇到的问题，研究车载侧信道机改进处理机制以及如何利用现有的协议改进处理机制，通过现场试验，验证改进的处理机制对于信道切换时遇到问题的解决情况。

关键词: 数字无线列调系统, 车载电台, 信道切换, 空闲帧, 切换请求

CLC Number:

U285

Zhang Chi, Zhu Hong, Shi Quan. Research and Analysis of Channel Switching of Railway 400 MHz DRTD System[J]. Railway Signalling & Communication Engineering, 2025, 22(2): 65-70.

张驰, 朱红, 石泉. 铁路400 MHz数字无线列调系统中信道切换问题研究与分析[J]. 铁路通信信号工程技术, 2025, 22(2): 65-70.

Figures/Tables 6

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Research and Analysis of Channel Switching of Railway 400 MHz DRTD System

铁路400 MHz数字无线列调系统中信道切换问题研究与分析

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