| XDSL是基于现有铜线环路发展最快的接入网传输技术，在商业和居民用户应用领域具有广泛的发展前景。 本书做到了理论和工程的有机结合，是介绍同类技术图书中的典型代表。该书首先介绍了基于DSL的接入网结构和相关技术：调制、差错控制和数据压缩等，并比较了DSL技术与其它接入技术的异同；又重点讨论了典型的XDSL结构；如HDSL和HDSL2，ADSL和ADSL Lite以及VDSL宽带接入结构，同时还介绍了基于DSL传输技术之上的高层网络协议：ATM，TCP/IP以及PPP协议等；最后，对DSL技术中用户驻地设施和接入网体系结构、业务结构和宽带接入网设计等更加深入的话题作了详细的阐述。 |
| introduction targeted audience benefits for the reader organization of the book author’s disclaimer acronyms and abbreviations part1 background chapter1 evolution to broadband introduction what is a communications network？ architecture of communication networks categorization of communication networks based on topology categorization of communication networks based on traffic transport mechanisms categorization of communication networks based on functional area categorization of communication networks based on dominant applications telecommunications networks .history of telecommunications networks architecture of telecommunications networks data communications networks history of data communications networks architecture of data communications networks video networks history of video networks architecture of video networks broadband networks——the convergence of networks for high-speed communications technological，economic，and regulatory drivers for convergence technological drivers regulatory drivers economic drivers evolutionary process toward convergence applications of broadband networks internet access imaging summary references chapter2 broadband access technologies and architectures overview needs of customers，service providers，and equipment manufacturers needs of customers needs of service providers needs of equipment manufacturers key requirements affordable access ubiquitous access high-speed access broadband access technologies copper-loop access technologies（xdsl） cable access technologies satellite technology broadband access architecture idlc（integrated digital loop carrier） hybrid fiber/coax（hfc） fiber-to-the-curb（fttc）adn other fiber architectures lmds mmds dbs architecture analysis of broadband technologies and architectures summary references part2 dsl technologies chapter3 fundamentals of copper-loop transmission overview background of pstn technology information，data，and signals analog signals conversion of human voice into analog signals the pstnand analog transmission evolution of the pstn core to digital transmission challenges and limitations of the pstn access network for data transmission signal attenuation due to distance noisy environment legacy of the voice access network architecture techniques to overcome the challenges and limitations of the pstn access network line coding and modulation/demodulation error control data compression advanced techniques echo cancellation multi-dimensional trellis coding shell mapping（constellation shaping） fast training evolution of modem technology and standards to dsl simultaneous pots and dsl service summary references chapter4 adsl and adsl lite background history basic network architecture applications standards and working group activities technology discussion modulation schemes ansi t1.413 standard overview adsl system reference model adsl transport classes adsl overhead adsl framing initialization fast retraining for adsl lite power management for adsl lite differences between t1.413i2，g.dmt，and g.lite current state of the technology deployment issues and possible solutions interoperability efforts trials and deployments future directions summary references chapter5 hdsl and hdsl2 background history basic network acrhitecture applications standards activities technology discussion modulation schemes overview of the draft hdsl2 standard hdsl2 system reference model h2tu transceiver reference model h2tu ds1 tc layer functional characteristics initialization data mode operations，administration，maintenance，and provisioning（oam&p） current state of the technology deployment issues and possible solutions trials and deployments future directions summary references chapter6 vdsl background histoyr basic network architecture applications standards and special-interest group activities technology discussion modulation schemes upstream multiplexing vdsl proposals ansi requirements documents vdsl reference model vdsl data rates vdsl activation and states current state of the technology deployment issues and possible solutions future directions summary references chapter7 fundamentals of higher-layer technologies overview asynchronous transfer mode（atm） principles of atm advantages（and disadvantages）of atm atm standards atm protocol model atm addressing atm signaling atm operations，administration，and maintenance（oam） transmission control protocol/internet protocol（tcp/ip） tcp/ip standards tcp/ip protocol architecture ppp and tunneling ppp and the osi layer ppp initialization ppp data transfer ppp and tunneling tunneling protocols tunnel establishment differences between traditional dial-up and tunneling audio compression g.7xx series of itu standards adpcm celp video compression joint photographic experts group（jpeg）standard h.261 developed by the itu mpeg-1 developed by iso/iec mpeg-2 developed by iso/iec mpeg-4 developed by iso/iec vodeoconferencing h.32x series of standards developed by the itu summary references part3 dsl architecture chapter8 premises and access network architectures overview premise network architecture requirements cpe configuration requirements u-interface requirements service definition requirements proposed premises network architectures single host，internal dsl modem multiple hosts，internal dsl modem single/multiple host（s），external dsl modem over atm-based premises distribution single/multiple host（s），external dsl modem over non-atm based premises distribution multiple hosts，any media premises distribution using routing functions of the access network user port functions service port functions core functions transport functions access network system management functions network elements of a dsl-based access architecture customer premises equipment（cpe） access loop colocation or central office equipment transport switch/point-of-presence location common access architectures integrated digital loop carrier（idlc） fiber-to-the-node（fttn）and other fiber-based loop architectures（fttc，ftth，and fttb） clec architecture architectural issues operational economic regulatory g.lite specific issues rate change due to splitterless operation maintaining a network presince during reinitialization future directions summary references chapter9 service architecture overview reference architecture service and higher-layer architecture voice services and architecture protocol stack key architecture element architecture requirements architecture issues data services and architecture protocol stack architecture requirements architecture issues video services and architecture protocol stack architecture requirements architecture issues full integrated services（integrated voice，data，video） protocol stack architecture requirements atm-based access network performance architecture issues impact of dsl-based services on operational processes summary references chapter10 broadband access network design overview broadband access network definition network design requirements for broadband access traffic protocol architecture services，features，and functions access route diversity dsl-based access network design traffic engineering access technology selection link or transmission network design broadband dslam node design broadband access network topologies physical star/logical star topology physical ring/logical star physical star/logical ring summary appendixa telecom operating companies pursuing dsl appendixb regulators appendixc telecommunications journals and magazines journals and other electronic media index |
![MPLS技术与实现[按需印刷]](http://images.china-pub.com/ebook/8455/zcover.jpg)
内容加载中，请稍后...
商品评论（0条）