信息通信網(wǎng)絡(luò)概論：Chapter1 Overview

信息通信網(wǎng)絡(luò)概論

Introduction

to

informationandcommunicationnetworks通信網(wǎng)原理與技術(shù)PrinciplesandTechniquesofCommunicationNetworks1Chapter1

Overview人與世界信息的獲取(Get)與傳遞(Transfer)通信(Communication)、

通信網(wǎng)絡(luò)(CommunicationNetwork)2Teaching

Objective

介紹通信網(wǎng)絡(luò)最基本和典型的理論和技術(shù)：理解通信網(wǎng)的基本概念，其研究的內(nèi)涵本質(zhì)，研究的理論基礎(chǔ)及主要技術(shù)方法。1.1通信網(wǎng)的發(fā)展歷史與現(xiàn)狀1.2影響通信網(wǎng)發(fā)展的因素1.3通信網(wǎng)的發(fā)展趨勢1.4課程規(guī)劃與安排31.1HistoryandPresentofcommunicationnetwork

1.1.1電話通信網(wǎng) (TelephoneNetworks)1.1.2計算機(jī)數(shù)據(jù)通信網(wǎng) (ComputerNetworks)

1.1.3廣播電視通信網(wǎng) (RadioandTelevisionNetworks)

1.1.4無線與移動通信網(wǎng) (WirelessandMobileNetworks)4最初：人工接續(xù)交換的電話通信網(wǎng)（按需交換電路）目標(biāo)：大容量

Highcapacity

高質(zhì)量

Highquality高效率

HighEfficiency

5Connecting（接續(xù)）1.1.1TelephoneNetworks歷史發(fā)展：傳輸技術(shù)(TransmissionTechnology)模擬傳輸大容量數(shù)字傳輸（數(shù)字明線、數(shù)字同軸電纜、數(shù)字光纖等）數(shù)字傳輸(DigitalTransmission)PDHSDH、OTN等交換技術(shù)(SwitchingTechnology)人工接續(xù)機(jī)械式自動交換電子式空分自動交換大容量數(shù)字程控時分自動交換業(yè)務(wù)管控(ServiceOperation)固定智能化，單一綜合化61.1.1TelephoneNetworks1.1.2ComputerNetworks在低傳輸性能和計算機(jī)處理能力條件下的廣域(widearea)通信網(wǎng)大容量計算機(jī)局域(localarea)網(wǎng)在高傳輸性能和計算處理能力條件下，基于IP技術(shù)的網(wǎng)絡(luò)互聯(lián)(Internet)技術(shù)7存儲轉(zhuǎn)發(fā)機(jī)制：store-and-forward1.1.3RadioandTelevisionNetworksOpen

Circuit

BroadcastCableTV模擬單向傳輸分配數(shù)字化電視傳輸分配Fiberandcoaxial-cable(同軸電纜)混合模擬的高質(zhì)量傳輸分配具有用戶點播（VOD）性能的數(shù)字化電視傳輸分配向具備電視、數(shù)據(jù)綜合業(yè)務(wù)能力的雙向?qū)拵ㄐ啪W(wǎng)演進(jìn)發(fā)展81.1.4WirelessandMobileNetworks廣播、軍事、專業(yè)應(yīng)用公眾通信模擬窄帶高性能、高效率的數(shù)字寬帶系統(tǒng)大區(qū)制復(fù)用網(wǎng)絡(luò)蜂窩制、自適應(yīng)構(gòu)造高效率體制用戶移動網(wǎng)絡(luò)移動方向9

1.2.1社會需求requirements

1.2.2技術(shù)支撐technology

1.2.3經(jīng)濟(jì)性能efficiency 1.2.4標(biāo)準(zhǔn)化standardization101.2Factorsinfluencingthedevelopmentofcommunicationnetworks

1.3.1數(shù)字化Digitization

1.3.2綜合化Integration

1.3.3智能化Intellectualization

1.3.4個人化Personalization

1.3.5高性能Highperformance111.3DevtrendsofCommunicationNetworks12PartIITechnologyandApplicationPartIConceptsandTheoriesCh5Packetswitching--

datagramCh8TransportNetworksCh4CircuitswitchingCh6Packetswitching–VirtualCircuitCh1OverviewCh2PrinciplesCh3

TheoriesCh7MPLS(BroadbandIP)Ch9AccessNetworksCh10WirelessNetworksC