核心节点

本文对OBS网络核心节点控制卡的设计与实现进行了较深入的研究。

In this paper we present a new solution for OBS core node control cards based on FPGA .

OBS核心节点中FDL配置方式的研究

Research of FDL structure in OBS core node

OBS核心节点嵌入式网管代理的研究与设计

Study and Design of Embedded Managed Agent for Optical Burst Switching Network Core Nodes

OBS以及LOBS网络由边缘节点和核心节点组成。

OBS and LOBS networks are all composed of the edge nodes .

核心节点SN作为轻量级VoIP系统中的核心网络实体，对整个系统的实现具有重要意义。

Super nodes as the core network entity in the system , have an important role for the entire VoIP system .

提出了光突发交换（OBS）核心节点上缓存结构的合理而高效的设计方案。

Reasonable and effective buffer structures are proposed in core routers / nodes of optical burst switching .

在OBS网络中，核心节点的调度方案是影响网络交换性能的重要因素。

In OBS network , the scheduling algorithm for core router is important for the performance of switching network .

而如果采用类似IntServ模型的方式，又给网络核心节点带来较大的负担。

IF use IntServ model , that may made big burden on core routers .

OBS网络由边缘节点和核心节点组成，网络在边缘节点处完成业务的接入。

An OBS network is composed of the edge nodes and the core nodes , the service access is performed at the edge nodes of the network .

本文着重分析和讨论了边缘节点的汇聚技术，以及核心节点路由技术和OXC的设计。

The design of OXC in core node and assembly strategy in edge node are discussed and analyzed in this paper .

随后进一步分析描述了多DSP并行处理应用的现状，以及多DSP并行处理在OBS系统中的核心节点路由器中所起的重要作用，多DSP并行处理模块的设计原理等。

Whereafter , this thesis introduce the familiar architectures for multi-DSP parallel processing , and point out the principles of the new multi-DSP parallel processing architecture module design and the important role it play in OBS core node router .

专网由核心节点和多个一类节点组成，其间的广域网采用2M带宽的E1专线作为主线路连接。

The dedicated network consists of the core node and several Class-1 nodes , connected by wide area network using E1 dedicated transmission line with a bandwidth of 2 Megabytes .

在OBS网络的核心节点中，突发数据包之间会由于竞争有限的数据（波长）资源而发生冲突。

In the core nodes of OBS network , the contention will occurs when several bursts are contending for the limited data ( wavelength ) resources at the same time .

在核心节点，OTN实现了大颗粒业务的灵活调度和保护，这对大容量OTN设备的可靠性和稳定性提出了更高要求。

The stability and reliability of the OTN equipment are getting more attention for the functionality of their large particles business scheduling and protection at core node .

该机制在已有OBS资源预留机制的基础上，将边缘节点突发组装算法与核心节点资源预留机制相结合，通过引入突发流的概念，改变了资源预留的基本单位；

Based on current reservation mechanisms in OBS , by combining the burst assembly algorithm in edge nodes with the resource reservation scheme in core nodes and by introducing the concept of " burst flow ", DRR changes the essential units of resource reservation .

首先，本文从整体出发，对OBS网络的分层结构、核心节点与边缘节点的结构与功能（着重讨论边缘节点）等内容进行了归纳，并总结了现有汇聚算法中的几种汇聚机制。

Firstly , the hierarchy of OBS network as well as the structure and function of core node and edge node ( the edge node is emphasized ) are summed up . Further more , the assembly mechanisms in current research papers are concluded .

北京邮电大学是1994年创建中国教育和科研讨一算机网”（CERNET）的十所大学之一，也是全国第二代中国教育和科研计算机网（CERNET2）主干网的核心节点之一，学校的计算机校园网是CERNET示范工程。

And BUPT is one of ten universitiesthat took part in the initiation construction of " China Education and Research Network " ( CERNET ) in 1994 . It also look part in the demonstrating project of the CERNET2 ， a model project of the next-generation Internet ( NGI )

光突发交换中核心节点的关键技术研究

Research on Key Issues of Core Routers in Optical Burst Switching

光突发交换核心节点的缓存结构设计

Design of Buffer Structure at Core Node in Optical Burst Switching

然后以核心节点集为树根构造包含所有目的节点的组播核心树。

The tree 's root is the core node collection .

研究结果表明：提高核心节点比特率与边缘节点比特率之间的比值，能有效改善网络性能到。

The results show that the system can offer better performance with increasing core-to-edge bit rate ratio .

第二章对光突发网络的基本原理、网络节点结构，包括核心节点和边缘节点进行了叙述。

Chapter two points out the principle of OBS , network node structure includes core node and edge node .

城市作为人类物质文明和精神文明高度集聚的核心节点，是温室气体的主要排放源。

As the core node of human material and spiritual civilization , urban is the main source of greenhouse gas emission .

邮区中心局是邮政企业生产和经营赖以生存发展的重要基础，是确保邮政顺利开展各项实物类业务的核心节点。

Postal district centers is the important basic that production and operation of the postal enterprise depend on subsistence and development .

在建立核心节点的突发流与突发竞争模型的基础上，提出缓存结构设计应满足的基本条件，进而又提出将缓存结构和交换结构相结合的集成结构方案；

Based on the model of burst traffics and their contentions , the basic qualifications for designing the buffer structures are concluded .

港口已逐步转变为综合运输体系网络中的核心节点，并成为了商品流、资金流及信息流的中心。

Ports have become the core links in the integrated transportation network , and they have been the centers of the flow of goods , funds or information .

针对多区域网络核心节点的拥塞问题，本文基于不丢弃报文的原则，提出多区域网络中核心节点的拥塞控制策略。

In this paper , the congestion of the multi-regional networks was analyzed and the congestion control strategy was proposed based on the principle of no dropping packets .

通过研究，本文希望能为农产品批发市场的现代化建设找到方向，并使其在农业现代化建设中更有效的发挥其核心节点的作用。

Through this research , we hope the modernization of agricultural product wholesale market should find its direction , and make it more effectively play the central role in agriculture modernization .

随着现代物流发展，传统港口点与点的竞争逐渐转变成含港口核心节点的物流链竞争。

With the development of modern logistics , the competition of point to point of the traditional port gradually changes into the competition of the logistics chain which contains the port core node .

基于改造方案，实现了核心节点和一类节点的网络改造方案，并给出了流量控制设备和网络管理系统的方案实现。

Based on the upgrade solution , the network upgrade of the core node and Class-1 nodes are carried out and the design of network flow control device and network management system is provided .