本文關(guān)鍵詞：基于交換式以太網(wǎng)的列車通信網(wǎng)絡(luò)實(shí)時(shí)性研究，由筆耕文化傳播整理發(fā)布。

基于交換式以太網(wǎng)的列車通信網(wǎng)絡(luò)實(shí)時(shí)性研究

Research on Real-time Performance of Train Communication Network Based on the Switched Ethernet Technology

[1] [2] [3] [4]

WANG Tao, WANG Li-de, ZHOU Jie-qiong, SHEN Ping （School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China）

北京交通大學(xué)電氣工程學(xué)院,北京100044

文章摘要：以太網(wǎng)技術(shù)具有通信速率高、成本低的優(yōu)勢(shì)，目前國(guó)內(nèi)外軌道交通行業(yè)都在研究發(fā)展基于以太網(wǎng)的列車通信網(wǎng)絡(luò)。本文以兼容傳統(tǒng)以太網(wǎng)協(xié)議為前提，研究提高工業(yè)以太網(wǎng)實(shí)時(shí)性的方法。在對(duì)列車通信網(wǎng)絡(luò)需求分析的基礎(chǔ)上，提出一種基于交換式以太網(wǎng)的列車通信網(wǎng)絡(luò)的解決方案，為滿足列車重要數(shù)據(jù)的實(shí)時(shí)性要求，，提出列車級(jí)交換機(jī)采用混合調(diào)度算法，以降低列車實(shí)時(shí)數(shù)據(jù)在交換機(jī)緩沖隊(duì)列中的排隊(duì)時(shí)延。運(yùn)用網(wǎng)絡(luò)演算理論分析列車實(shí)時(shí)數(shù)據(jù)的端到端時(shí)延上界，并通過(guò)網(wǎng)絡(luò)仿真技術(shù)驗(yàn)證本方案應(yīng)用于列車通信網(wǎng)絡(luò)這一特定場(chǎng)合的可行性和有效性。

Abstr：Given the advantages of the Ethernet technology in terms of high transmission rate and low cost ,Eth‐ernet‐based train communication netw ork is under development in domestic and international rail transit indus‐tries .This paper first analyzes the method to improve real‐time performance of industrial Ethernet under the premise of the compatible traditional Ethernet protocol .And then based on a comprehensive requirement analy‐sis of train communication network ,this paper proposes a solution of train communication network based on the switched Ethernet ,where a hybrid scheduling algorithm is adopted on the train switches to ensure real‐time performance of important train data and to reduce queuing delay of real‐time data in the buffer queue at the switches .Using network calculus theory to analyze the end‐to‐end delay limit of the real‐time data ,the feasibil‐ity and the effectiveness of the scheme applied to the specific situation of train communication network are veri‐fied through the network simulation technology .

文章關(guān)鍵詞：

Keyword：:switched Ethernet train communication network hybrid scheduling algorithm network calculus network simulation

課題項(xiàng)目：鐵路總公司科技研究開(kāi)發(fā)計(jì)劃（2013J011-I）

  本文關(guān)鍵詞：基于交換式以太網(wǎng)的列車通信網(wǎng)絡(luò)實(shí)時(shí)性研究，由筆耕文化傳播整理發(fā)布。