分布式高速层域网域连模型

本文提出了一种新的基于总线时间片结构的介质访问控制方法，根据对分布式高．速局网的互连模型的体系结构、信元结构的分析，提出了分布式高速局网互连模型的设计、实现方法，这对于现有局域网互连并向大网传接有十分重要的意义。     

基于Agent的网格互连结构

目前有许多论坛、试验环境和研究项目都在进行网格技术的研究，但这些研究都自成体系，采用的技术各不相同，这些网格系统不能互连、互通、互操作．为了解决这一问题，本文提出基于Agent的网格互连结构，把Agent技术和网格技术结合起采，对网格互连的安全机制和资源管理机制进行了研究，并给出了网格互连结构的设计．在本文提出的结构解决了Inter—Domain网格安全机制不同的问题、Inter—Domain网格资源共享的问题，可实现Inter—Domain网格单点登录（Single—Sign—On）和代表（Delegation），具有通用、简单、高效、分布式等优点．     

基于ATM局网仿真的网络管理模型

基于ＡＴＭ局网仿真的ＡＴＭ网络管理是ＡＴＭ网络研究的一个热点问题,本文研究了ＡＴＭ的局网仿真的分层结构及管理规范,进而设计了一种基于ＳＮＭＰ的分布式ＡＴＭ局网管理模型,并将该模型在实验中的加以实现。     

适于云计算的异步光分组交换互连网络节点

提出一种适合云计算的异步光分组交换互连网络节点模型。节点采用主从式树型架构进行分布式控制和管理,高速数据流在各级节点基于组播方式实现异步交换,可实现大批量计算、存储节点的可扩展性互连。提出了基于循环光纤延时线的全光分组冲突解决机制。介绍了互连网络节点架构,建立了节点稳定性及时延性能分析模型,进行了数值仿真分析。结果表明,一个256字节分组在32波密集波分复用系统中传输时,分组平均等待时延为0.072 ns。因此,该节点架构可满足云计算互连网络的可扩展性及高速、大容量、实时数据交互需求。     

异种远程网的互连模型与设计方法

本文结合工作实际,用系统工程的理论和方法,剖析了存在且运行可靠的两个异种远程网,建立了网络互连模型,给出了模型的设计方法。文中提出的模型已经成功地解决了远程数据交换网与类分布式计算机网之间的互连。此模型亦可用于其它的计算机网际互连。     

基于SOAP技术的分布式工作流互操作模型的构建

当前，随着网络技术的发展，各种分布式工作流互操作模型不断涌现。然而，单纯使用组件技术的分布式工作流互操作模型很难实现防火墙穿越、异构系统之间的真正互连。SOAP技术解决了这些问题。本文分析了分布式工作流互操作系统的实际需求和原有模型的缺陷，提出了一个基于SOAP技术的分布式工作流互操作模型。     

基于TRANSPUTER的并行计算机系统在污水处理厂中的应用

为了提高污水处理厂的运行管理水平,本提出了一种新型光互连分布式并行计算机系统。基于Transputer的PLC是该系统的重要组成单元,各单元按一定拓扑结构互连构成污水处理厂的控制系统。研究结果表明,该系统不仅具有较强的并行协调处理能力,而且具有高可靠性、灵活性和可扩展性,以及高速处理能力等优点。     

一种蓝牙分散网拓扑形成算法的设计与实现

针对现有的蓝牙分散网拓扑形成算法的动态性和自愈性较差的问题，提出了一种新算法.该算法综合考虑了对分散网互连有显著影响的微微网的个数、负载均衡和结点移动性等因素，使最终得到的分散网拓扑是一个异构的、局部互连网状的结构，该结构具有较强自愈和容错能力.利用BlueHoc蓝牙扩展模块在NS-2仿真器上对算法进行了模拟.结果显示，提出的算法可以有效地用于蓝牙分散网拓扑结构的创建.     

基于Petri网和多源广域同步信息融合的配网故障定位方法

针对现有配电网故障定位技术存在的不足，提出了利用Petri网和多源广域同步信息的配网故障定位方法。分析了含有分布式电源的配电网络故障电流情况，给出了相应的开关函数和适应度函数。针对含有分布式电源的配电网络，说明了故障指示器在发生故障时的工作原理。针对网络中含有的保护装置、配自开关、故障指示器等多源信息，提出基于模糊Petri网故障诊断模型，说明了基本推理方法和故障诊断模型的建立原则，并给出了相应的故障判断流程。对提出的方法进行了仿真分析，说明了利用多源信息融合Petri网的方法，能够有效判断含有分布式电源配电网络故障区段。     

一个两步蓝牙散射网形成算法TBSF

蓝牙是一门新兴的低功耗、低成本短距离无线技术，它使便携设备能方便快捷地形成短距离无线网，同时为构建成本低廉的移动自组网带来了新的选择方案．提出一个异步的、完全分布式蓝牙散射网构造算法——TBSF，首先由所有蓝牙节点生成一系列独立匹克网，然后互连匹克网成为散射网．基于节点邻居个数选择主或桥节点，通过一个节点角色转换图确定桥节点充当的角色．任意两个相邻匹克网之间通过惟一的连接路由互连，最终形成一个连通的散射网，主和桥节点构成散射网的一个连通支配集．仿真实验表明，TBSF算法创建散射网具有较好特性．     

A class of highly scalable optical crossbar-connectedinterconnection networks (SOCNs) for parallel computing systems

A class of highly scalable interconnect topologies called the Scalable Optical Crossbar-Connected Interconnection Networks (SOCNs) is proposed. This proposed class of networks combines the use of tunable Vertical Cavity Surface Emitting Lasers (VCSEL's), Wavelength Division Multiplexing (WDM) and a scalable, hierarchical network architecture to implement large-scale optical crossbar based networks. A free-space and optical waveguide-based crossbar interconnect utilizing tunable VCSEL arrays is proposed for interconnecting processor elements within a local cluster. A similar WDM optical crossbar using optical fibers is proposed for implementing intercluster crossbar links. The combination of the two technologies produces large-scale optical fan-out switches that could be used to implement relatively low cost, large scale, high bandwidth, low latency, fully connected crossbar clusters supporting up to hundreds of processors. An extension of the crossbar network architecture is also proposed that implements a hybrid network architecture that is much more scalable. This could be used to connect thousands of processors in a multiprocessor configuration while maintaining a low latency and high bandwidth. Such an architecture could be very suitable for constructing relatively inexpensive, highly scalable, high bandwidth, and fault-tolerant interconnects for large-scale, massively parallel computer systems. This paper presents a thorough analysis of two example topologies, including a comparison of the two topologies to other popular networks. In addition, an overview of a proposed optical implementation and power budget is presented, along with analysis of proposed media access control protocols and corresponding optical implementation     

现场总线的网络结构

本文从网络技术出发，研究现场总线的网络拓扑结构、现场总线的数据通信工作方式及现场总线中网络扩展与网络互连问题。     

IEEE802.3 LAN通过DQDB MAN互连

城域网（Ｍｅｔｒｏｐｏｌｉｔａｎａｒｅａｎｅｔｗｏｒｋ,ＭＡＮ）是随着网络技术、通信技术和其他计算机技术进一步发展而出现的新型网络,非常适合于各种局域网的互连。局域网通过城域网互连有多种方案,考虑到运行效率和复杂性,并结合实际需求,本文采用透明桥接技术实现了ＩＥＥＥ８０２．３局域网通过ＩＥＥＥ８０２．６（ＤＱＤＢ）城域网的高速互连。文中着重讨论了桥接器的硬件构成、桥接算法、软件结构及其程序实现。     

Scalable network-on-chip architecture for configurable neural networks

Providing highly flexible connectivity is a major architectural challenge for hardware implementation of reconfigurable neural networks. We perform an analytical evaluation and comparison of different configurable interconnect architectures (mesh NoC, tree, shared bus and point-to-point) emulating variants of two neural network topologies (having full and random configurable connectivity). We derive analytical expressions and asymptotic limits for performance (in terms of bandwidth) and cost (in terms of area and power) of the interconnect architectures considering three communication methods (unicast, multicast and broadcast). It is shown that multicast mesh NoC provides the highest performance/cost ratio and consequently it is the most suitable interconnect architecture for configurable neural network implementation. Routing table size requirements and their impact on scalability were analyzed. Modular hierarchical architecture based on multicast mesh NoC is proposed to allow large scale neural networks emulation. Simulation results successfully validate the analytical models and the asymptotic behavior of the network as a function of its size.     

SDN与传统IP网络互联架构的设计与实现

所提出的软件定义网络SDN与传统IP网络互联的架构基于以下核心思想:把整体SDN当成一个传统IP网络的"路由器",由IP网络和该"路由器"通过BGP协议进行域间网络层可达性信息NLRI的交互,从而使得全网的NLRI经过路由同步后达到一致。在此思想下分析设计了互联架构,对该互联架构进行了模块功能测试、多SDN场景下的仿真和性能测试。仿真结果表明所提出的互联架构可以完成SDN与传统IP网络的互联互通。设计的互联架构对原有网络设备的改动很少,所做的改动集中在可软件编程的控制器上,这有利于本架构在具体网络环境中的实施和部署。     

Gemini: an optical interconnection network for parallel processing

The Gemini interconnect is a dual technology (optical and electrical) interconnection network designed for use in tightly-coupled multicomputer systems. It consists of a circuit-switched optical data path in parallel with a packet-switched electrical control/data path. The optical path is used for transmission of long data messages and the electrical path is used for switch control and transmission of short data messages. The paper describes the architecture of the interconnection network and related communications protocols. Fairness issues associated with network operation are addressed and a discrete-event simulation model of the entire system is described. Network performance characteristics derived from the simulation model are presented. The results show significant performance benefits when using virtual output queuing and quantify the tradeoffs between throughput and fairness in the system     

基于Ethereal的TCP/IP网络协议研究及分析

TCP/IP是目前网络环境中广泛采用的互联网协议。本文简述了TCP/IP网络协议的工作原理,依据网络数据包嗅探工具Ethereal以TCP协议的三次握手过程为例,深入探讨了TCP/IP的体系结构和数据传输机制,并对协议的网络性能进行了简要分析。     

基于RFC2544测试的网络测试仪的设计与实现

RFC2544是当前网络互联设备性能测试普遍使用的标准。该文设计并实现了一种支持RFC2544测试的性价比较高的网络测试仪。介绍了RFC2544标准及其测试条件,通过对网络测试仪硬件结构以及软件设计的说明,阐述了该系统的工作原理,结合相关测试条件,与国外产品进行比对测试,实验结果的量化误差表明了该系统测试的精确性。     

Evaluating the energy consumption and the silicon area of on-chip interconnect architectures

Sophisticated on-chip interconnects using packet and circuit switching techniques were recently proposed as a solution to non-scalable shared-bus schemes currently used in Systems-on-Chip (SoCs) implementation. Different interconnect architectures have been studied and adapted for SoCs to achieve high throughput, low latency and energy consumption, and efficient silicon area. Recently, a new on-chip interconnect architecture by adapting the WK-recursive network topology structure has been introduced for SoCs. This paper analyses and compares the energy consumption and the area requirements of Wk-recursive network with five common on-chip interconnects, 2D Mesh, Ring, Spidergon, Fat-Tree and Butterfly Fat-Tree. We investigated the effects of load and traffic models and the obtained results show that the traffic models and load that ends processing elements has a direct effect on the energy consumption and area requirements. In these results, WK-recursive interconnect generally has a higher energy consumption and silicon area requirements in heavy traffic load.     

An integrated solution for QoS provision and congestion management in high-performance interconnection networks using deterministic source-based routing

A key element in any system based on several interconnected computing and/or storage nodes is the interconnection network. Currently, one of the main concerns of high-speed interconnection network designers is how to improve network performance while using the minimum number of network resources. In that sense, in this paper we describe an efficient switch architecture suitable for any interconnect technology implementing deterministic source-based routing. This switch architecture uses the same network resources to provide two issues that improve network performance: Congestion Management and QoS support. We also present results to compare the effectiveness of this architecture to those of other proposals typically used to provide these issues in this context. These results have been obtained for synthetic traffic and for traces from parallel benchmarks and video frames. From the results, we can conclude that in any traffic scenario, our proposal is as effective as the previous ones, while requiring fewer resources and thus being much more cost-effective.