铁通宽带多业务数据骨干网简介

介绍铁通宽带多业务数据骨干网的一般情况、网络结构、路由方案和地址结构，以及将来的网络演进方案。     

VLAN技术及其应用研究

论证了ＶＬＡＮ技术特点和实现方式,以及基于ＡＴＭ骨干的ＶＬＡＮ实现方式,论述了基于交换机的端口,基于第三层协议的类型、基于多址广播方式和策略分组划分的四种ＶＬＡＮ的常用划分方式,以及通过外部路由器、具有路由功能的交换机和建立通信连接来实现ＶＬＡＮ的通信技术;简述了千兆以太网中ＶＬＡＮ的主式和服务质量的实现方式。     

STUDY ON NEIGHBORHOOD DISCOVERY PROTOCOL IN COMMUNICATION NETWORKS

IntroductionIt is well known thatthe PNNIsystem is a de-veloping system in the private ATM networkfield[1～ 5] .According to Ref.[6],PNNI includestwo categories of protocols,one defines for dis-tributing topology information between switchesand clusters of switches- routing protocol,and theother defines the signalling- signalling protocol,which is message flows used to establish point topoint and point to multi- point connections acrossthe ATM network.Forrealizing the PNNIroutingwith m…     

空管运行效率评估指标体系研究

空管运行效率是衡量一个区域空管系统总体运行状态的综合指标,它受到很多与空管系统有关因素的影响。基于人机环系统工程理论,结合空管运行实际情况,充分分析空管运行效率的影响因素,建立空管运行效率评估的原则、标准和指标体系。     

DYNAMIC RESOURCE CONTROL OF THE VIRTUAL PATH IN ATM NETWORKS

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Definition of a merging assistant strategy using intelligent vehicles

In the area of active traffic management, new technologies provide opportunities to improve the use of current infrastructure. Vehicles equipped with in-car communication systems are capable of exchanging messages with the infrastructure and other vehicles. This new capability offers many opportunities for traffic management. This paper presents a novel merging assistant strategy that exploits the communication capabilities of intelligent vehicles. The proposed control requires the cooperation of equipped vehicles on the main carriageway in order to create merging gaps for on-ramp vehicles released by a traffic light. The aim is to reduce disruptions to the traffic flow created by the merging vehicles. This paper focuses on the analytical formulation of the control algorithm, and the traffic flow theories used to define the strategy. The dynamics of the gap formation derived from theoretical considerations are validated using a microscopic simulation. The validation indicates that the control strategy mostly developed from macroscopic theory well approximates microscopic traffic behaviour. The results present encouraging capabilities of the system. The size and frequency of the gaps created on the main carriageway, and the space and time required for their creation are compatible with a real deployment of the system. Finally, we summarise the results of a previous study showing that the proposed merging strategy reduces the occurrence of congestion and the number of late-merging vehicles. This innovative control strategy shows the potential of using intelligent vehicles for facilitating the merging manoeuvre through use of emerging communications technologies.     

ATM拥塞控制方法

拥塞控制是ＡＴＭ网络中一项重要技术，对ＡＴＭ网络拥塞控制方法作了论述与分析，并对一些实用算法作出评述。     

高速公路联网通信系统物理设计

基于宽带网络物理设计要求，提出了高速公路联网通信系统ATM over SDH＋PON解决方案，然后对接入网与骨干网结构、容量、网管、保护和同步系统进行了设计。     

学习方法在ATM通信网控制中的应用研究

一种新的基于神经网络学习的算法应用ATM通信网络的控制系统，该学习方法利用了误差反向传播的概念对于ATM的通信质量和业务性能大大提高。而且利用神经网络可以建立输入输出的关系，具有容易实现的特点，并给出了计算机模拟的结果。     

浅析高速公路专用通信系统的联网问题

简要分析高速公路专用通信网络的现状和业务需求,划分网络层次,介绍几种主要的组网技术手段,并提出组网建议方案.