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滨江学院课程论文题目分组交换技术及其现状与发展院系电子工程系专业通信工程学生姓名吴文杰学号20142334935指导教师周华职称二Ｏ一六年十二月十一日分组交换技术及其现状与发展摘要：随着互联网的高速发展人们对高速数据传输和移动多媒体业务的渴望不断上升，通信界正依托当今飞速发展的通信技术向3G体制挺进。在这一演进过程中，分组交换技术以自己独特的优点扮演着愈来愈重要的角色。分组交换是将用户传送的数据划分成一定的长度，每个部分叫做一个分组，通过传输分组的方式传输信息的一种技术。它是通过计算机和终端实现计算机与计算机之间的通信，在传输线路质量不高、网络技术手段还较单一的情况下，应运而生的一种交换技术。近年来，随着光纤技术获得巨大成就，信道的传输速率明显增强，这位分组交换技术的发展开辟了新的道路，帧中继、异步转移模式等快速分组交换技术迅速的发展起来。展望未来的高速互联网世界以分组交换技术为基础的分组核心网最终将承担全部数据业务已是不争的事实。关键词：分组交换；互联网；分组交换网；快速分组交换技术Packet switching technology and its present situation and the developmentAbstract:With the high-speed development of Internet, people desire for high-speed data transmission and mobile multimedia services is rising, the systems are based on the current rapid development of communication technology to the 3 g system in advance. In the evolution process, packet switching technology in their own unique advantage plays a more and more important role. Packet switching is to deliver users data into a certain length, each part is called a grouping, the transfer of information through the transmission way of grouping of a technology. It is through the computer and the communication between the computer and the computer terminal, the transmission line quality is not high, the network technology is a single case, a switching technology arises at the historic moment. Gain great achievements in recent years, with optical fiber technology, channel transmission rate enhanced obviously, the development of packet switching technology opens a new road, frame relay, asynchronous transfer mode, and so on fast packet switching technology is rapidly developed. Looking to the future of high-speed Internet world based on packet switching technology packet core network will bear all the data service is tangible.Keywords:packet switching；internet；Packet-switched networks；Fast packet switching technology一、分组交换技术概述随着微电子技术、计算机技术的飞速发展，交换技术得到了空前的发展。从电话交换一直到当今数据交换、综合业务数字交换，交换技术经历了人工交换到自动交换的过程。人们对可视电话、可视图文、图象通信和多媒体等宽带业务的需求，也将大大地推动异步传输技术（ATM）和同步数字系列技术（SDH）及宽