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fill="rgb(204,146,94)" style="box-sizing: border-box;"></path></g><g style="box-sizing: border-box;"><path d="M135.7,2.3c0,0.6-0.5,1.1-1.1,1.1s-1.1-0.5-1.1-1.1c0-0.6,0.5-1.1,1.1-1.1S135.7,1.7,135.7,2.3z" fill="rgb(204,146,94)" style="box-sizing: border-box;"></path></g><g style="box-sizing: border-box;"><path d="M131.3,2.3c0,0.6-0.5,1.1-1.1,1.1c-0.6,0-1.1-0.5-1.1-1.1c0-0.6,0.5-1.1,1.1-1.1    C130.8,1.2,131.3,1.7,131.3,2.3z" fill="rgb(204,146,94)" style="box-sizing: border-box;"></path></g></g></svg></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section style="padding-right: 15px;padding-left: 15px;font-size: 15px;color: rgb(107, 107, 107);box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;">【北京规划建设】是由与《北京规划建设》杂志联合推出的栏目，这里有新认知与旧经验的碰撞，新媒体与传统媒体的聚合。《北京规划建设》创刊于1987年，迄今已有32年的办刊历史。期刊强调深邃的思想性、厚重的理论性、丰富的实践性及敏锐的新闻性。【北京规划建设】系列既有严谨洗练的学术论文，也有轻松活泼的随笔。你走，我不送你；你来，无论多大风雨，我都等你。</p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="text-align: center;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;box-sizing: border-box;"><svg class="svg" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewbox="0 0 303.3 4.6" style="vertical-align: middle;max-width: 100%;width: 100%;box-sizing: border-box;" width="100%"><g style="box-sizing: border-box;"><g style="box-sizing: border-box;"><g style="box-sizing: border-box;"><g style="box-sizing: border-box;"><path d="M189.5,1.8c-1.4,0-2.7,0-4.1-0.3c-0.6-0.1-1.2-0.2-1.7-0.5c-0.3-0.1-1.5-1.3-1.3-0.4      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rgb(245, 124, 0);box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="text-align: justify;line-height: 1.8;color: rgb(97, 97, 97);font-size: 15px;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">摘要</strong>：本文通过介绍有线无线融合网的技术优势和网络结构，阐明了在规划工作中如何更好地进行基础设施布局，使社会管理更加精细化，使城市生活更加智慧、高效。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">关键词</strong>：有线无线融合网 基础设施 指标</p></section></section></section></section></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="text-align: center;margin: 10px 0%;box-sizing: border-box;"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;background-position: 0% 0%;background-repeat: repeat;background-size: auto;background-attachment: scroll;border-style: solid;border-width: 1px;border-radius: 6px;border-color: rgb(62, 62, 62);overflow: hidden;background-image: url("http://read.html5.qq.com/image?src=forum&q=5&r=0&imgflag=7&imageUrl=http://mmbiz.qpic.cn/mmbiz_png/icKFe0wqE4eNhbMv2nGyLrfwicdEIkXFnaWYcOJSibHoAia4KEC9aStW7LXvvECfYAkF6n0sGfWfEQ1xaaJy6CHHng/640?wx_fmt=png");box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="gulangu"><section style="margin-right: 0%;margin-bottom: -2px;margin-left: 0%;box-sizing: border-box;"><section style="display: inline-block;background-color: rgb(255, 255, 255);padding: 5px;border-style: none none solid;border-width: 1px;border-radius: 6px;border-color: rgb(62, 62, 62);overflow: hidden;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;background-color: rgb(216, 98, 34);border-width: 0px;border-radius: 6px;border-style: none;border-color: rgb(62, 62, 62);overflow: hidden;padding: 5px 10px;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="text-align: left;color: rgb(252, 242, 241);padding-right: 10px;padding-left: 10px;font-size: 18px;box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">引言</strong></p></section></section></section></section></section></section></section></section></section></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">随着物联网、云计算、大数据的广泛应用，人们的生活将会变得更加便捷和高效，如随时随地收看丰富的视频节目；实现车辆自动驾驶和轨迹跟踪；为楼宇用户提供楼内智能化服务；智能应对突发事件和突发公共危机；实现远程教育和远程医疗服务；高效准确的指挥调度等。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">广电企业是在以物联网、云计算、有线无线融合网等新一代架构基础上，实现居民生活智能化的目标。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="text-align: center;margin: 10px 0%;box-sizing: border-box;"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;background-position: 0% 0%;background-repeat: repeat;background-size: auto;background-attachment: scroll;border-style: solid;border-width: 1px;border-radius: 6px;border-color: rgb(62, 62, 62);overflow: hidden;background-image: url("http://read.html5.qq.com/image?src=forum&q=5&r=0&imgflag=7&imageUrl=http://mmbiz.qpic.cn/mmbiz_png/icKFe0wqE4eNhbMv2nGyLrfwicdEIkXFnaWYcOJSibHoAia4KEC9aStW7LXvvECfYAkF6n0sGfWfEQ1xaaJy6CHHng/640?wx_fmt=png");box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="gulangu"><section style="margin-right: 0%;margin-bottom: -2px;margin-left: 0%;box-sizing: border-box;"><section style="display: inline-block;background-color: rgb(255, 255, 255);padding: 5px;border-style: none none solid;border-width: 1px;border-radius: 6px;border-color: rgb(62, 62, 62);overflow: hidden;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;background-color: rgb(216, 98, 34);border-width: 0px;border-radius: 6px;border-style: none;border-color: rgb(62, 62, 62);overflow: hidden;padding: 5px 10px;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="text-align: left;color: rgb(252, 242, 241);padding-right: 10px;padding-left: 10px;font-size: 18px;box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">广电融合网的概述</strong></p></section></section></section></section></section></section></section></section></section></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;"><section style="border-top: 2px solid rgb(232, 153, 45);border-right-color: rgb(232, 153, 45);border-bottom-color: rgb(232, 153, 45);border-left-color: rgb(232, 153, 45);box-sizing: border-box;"><section style="display: inline-block;padding-right: 0.5em;padding-left: 0.5em;background-color: rgb(232, 153, 45);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">融合网介绍</strong></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">广电有线电视运营企业在传统城域网建设是以有线网络建设为主，采用多种方式推进光纤向用户端延伸，逐步建成以光纤和同轴电缆为主的有线接入网络。随着无线宽带网络覆盖需求的日益迫切，有线无线融合网的规划和建设将成为广电运营企业发展的必然趋势。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">有线无线融合网是在最大化利用现有广播电视基础设施为前提，同时，利用700M传播衰减更小的广电无线网络传输优势，达到面向个人、家庭、区域和城域等不同覆盖范围下的融合业务体验需求，结合统一业务支撑平台，开展涵盖“广播电视、交互业务、应急通信、行业信息化”等服务的应用。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;"><section style="border-top: 2px solid rgb(232, 153, 45);border-right-color: rgb(232, 153, 45);border-bottom-color: rgb(232, 153, 45);border-left-color: rgb(232, 153, 45);box-sizing: border-box;"><section style="display: inline-block;padding-right: 0.5em;padding-left: 0.5em;background-color: rgb(232, 153, 45);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">发展融合网的必要性</strong></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">随着“三网融合”“文化产业发展”“宽带中国”“智慧城市”“扩大信息消费”“信息惠民工程”等国家战略先后实施，我国广播电视网定位已从纯粹的宣传和文化基础设施，演变为国家信息化基础设施和宽带通信基础设施，这就需要朝着更高带宽、各种接入技术融合发展的方向演进。有线电视网络只有尽快实现有线无线融合网发展，才能够在国家未来的“宣传、文化及信息基础设施”布局中占有一席之地。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;"><section style="border-top: 2px solid rgb(232, 153, 45);border-right-color: rgb(232, 153, 45);border-bottom-color: rgb(232, 153, 45);border-left-color: rgb(232, 153, 45);box-sizing: border-box;"><section style="display: inline-block;padding-right: 0.5em;padding-left: 0.5em;background-color: rgb(232, 153, 45);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">融合网的应用优势</strong></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">有线无线融合网络以最大化利用现有广播电视基础设施为前提，依托自身资源，凭借已经覆盖全省市的有线网络和最后一公里的接入带宽优势，同时，利用700M传播衰减更小的无线网络优势，为智慧城市建设提供物理链路支持，从而实现依靠布局有线无线融合网络，构建智慧城市神经网作为现代城市发展载体，渗透到了各个领域，以达到面向个人、家庭、区域和城域等不同覆盖范围下的融合业务体验需求，结合统一业务支撑平台，开展涵盖“广播电视、交互业务、应急通信、行业信息化”等服务的应用。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">具体优势：一是融合网可以保障用户在任何时间、地点都有收听收看广播电视的渠道；二是融合网的核心是高覆盖率的有线电视网，加上无线双向网具有高穿透性，大覆盖性等优良的频谱特性，是广播电视网络双向化发展必要的技术补充手段；三是融合网可以延续有线电视网的核心理念与价值观，广播电视无线双向网是有线电视业务在无线领域的延伸；四是融合网从用户自身实际需求出发，结合业务发展需求，为用户提供有线、广播电视无线双向交互、WiFi等多种灵活的覆盖接入方式，满足用户多样化业务接入的需要；五是融合网独立发展出具有其鲜明特色的应用服务，适应三网融合发展的需要；六是融合网可以保证独立划分频段、独立组网，网络安全可靠，为技术要求高的行业提供服务，满足网络安全和信息安全的需要；七是融合网充分利用无线覆盖的技术优势开展区域特色广播，以进一步满足农村的融合业务需求，降低建设成本，实现传输效率的最大化。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="text-align: center;margin: 10px 0%;box-sizing: border-box;"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;background-position: 0% 0%;background-repeat: repeat;background-size: auto;background-attachment: scroll;border-style: solid;border-width: 1px;border-radius: 6px;border-color: rgb(62, 62, 62);overflow: hidden;background-image: url("http://read.html5.qq.com/image?src=forum&q=5&r=0&imgflag=7&imageUrl=http://mmbiz.qpic.cn/mmbiz_png/icKFe0wqE4eNhbMv2nGyLrfwicdEIkXFnaWYcOJSibHoAia4KEC9aStW7LXvvECfYAkF6n0sGfWfEQ1xaaJy6CHHng/640?wx_fmt=png");box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="gulangu"><section style="margin-right: 0%;margin-bottom: -2px;margin-left: 0%;box-sizing: border-box;"><section style="display: inline-block;background-color: rgb(255, 255, 255);padding: 5px;border-style: none none solid;border-width: 1px;border-radius: 6px;border-color: rgb(62, 62, 62);overflow: hidden;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;background-color: rgb(216, 98, 34);border-width: 0px;border-radius: 6px;border-style: none;border-color: rgb(62, 62, 62);overflow: hidden;padding: 5px 10px;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="text-align: left;color: rgb(252, 242, 241);padding-right: 10px;padding-left: 10px;font-size: 18px;box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">融合网基础设施规划</strong></p></section></section></section></section></section></section></section></section></section></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;"><section style="border-top: 2px solid rgb(232, 153, 45);border-right-color: rgb(232, 153, 45);border-bottom-color: rgb(232, 153, 45);border-left-color: rgb(232, 153, 45);box-sizing: border-box;"><section style="display: inline-block;padding-right: 0.5em;padding-left: 0.5em;background-color: rgb(232, 153, 45);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">融合网设计架构</strong></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">融合网是承载数字电视广播业务、互动电视点播业务、互联网接入业务、企业专线业务、物联网、智能家居等业务的基础承载网络。从纵向上可分为业务应用层、核心层、汇聚承载层、接入层和用户层等五个功能层面。各层的组成及关系如图1所示。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><img class="raw-image" data-ratio="0.6769912" src="http://read.html5.qq.com/image?src=forum&q=5&r=0&imgflag=7&imageUrl=http://mmbiz.qpic.cn/mmbiz_png/icKFe0wqE4eNhbMv2nGyLrfwicdEIkXFnaofWek4u6oGEdyuXU3xNyToj6UQW6Y7WFiaia5kk0JjN7Q8h5qTWpQdlA/640?wx_fmt=png" data-type="png" data-w="452" style="vertical-align: middle;box-sizing: border-box;"  /></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="text-align: center;font-size: 14px;color: rgb(160, 160, 160);box-sizing: border-box;"><p style="box-sizing: border-box;">图1 融合网的五层功能</p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;"><strong>业务应用层</strong>：基于有线无线网络融合资源，提供实现互联网、多媒体通讯、互动电视、物联网、智能家居等各类业务所需的业务逻辑、数据、媒体和设备资源。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;"><strong>核心层</strong>：为业务应用层和汇聚承载层的中间层，在业务平台的基础之上，建设有线无线一体化的互联互通平台，实现各平台的相互协作。核心层不仅需要满足现有业务的支撑能力，还需要满足行业信息化服务等多种业务支撑需求。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;"><strong>汇聚承载层</strong>：构成了业务融合网络的传输系统，实现融合网络全业务的传输。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;"><strong>接入层</strong>：为有线、广播电视无线双向交互、Wi-Fi、地面数字电视无线广播等多种接入方式协同覆盖，主要由有线接入网、无线广播发射台、网络节点组成，通过有线与广播电视无线双向交互网、与无线、无线广播与广播电视无线双向交互网的协同覆盖，实现覆盖区域内全业务接入。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;"><strong>用户层</strong>：包括连接最终用户与网络之间的融合终端和直接接入网络的智能终端。融合终端包括家庭网关、智能机顶盒，可为用户侧多种类型的终端提供统一的接口，实现多种类型终端设备的业务接入。多种类型的终端设备包括电视机、笔记本电脑、平板电脑、智能手机，以及专网终端、物联网终端等，是融合网业务的用户呈现单元。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;"><section style="border-top: 2px solid rgb(232, 153, 45);border-right-color: rgb(232, 153, 45);border-bottom-color: rgb(232, 153, 45);border-left-color: rgb(232, 153, 45);box-sizing: border-box;"><section style="display: inline-block;padding-right: 0.5em;padding-left: 0.5em;background-color: rgb(232, 153, 45);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">融合网络基础设施规划模型</strong></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">为落实融合网的设计架构，就需要将设计与机房、基站等基础设施相结合，实现有效的设备落地。为此，我们着重讨论一下城域网络基础设施规划模型。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><img class="raw-image" data-ratio="0.8098291" src="http://read.html5.qq.com/image?src=forum&q=5&r=0&imgflag=7&imageUrl=http://mmbiz.qpic.cn/mmbiz_png/icKFe0wqE4eNhbMv2nGyLrfwicdEIkXFnaoktduKW1qZu8gcyfsibibek13l12sz5ib5aIqbActAk4J8O0wVRqs8Jfw/640?wx_fmt=png" data-type="png" data-w="468" style="vertical-align: middle;box-sizing: border-box;"  /></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="text-align: center;white-space: normal;box-sizing: border-box;"><span style="font-size: 14px;color: rgb(160, 160, 160);box-sizing: border-box;">图2 融合网络基础设施规划模型</span></p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">融合网的骨干网络由有线电视一级中心机房构成，建议采用环形网络结构以保证网络的可靠性和路由的合理性。骨干网是业务接入控制点及控制点以上城域网核心路由器组成的路由网络，层次上分为核心层和业务应用层两层。其中核心层负责对业务接入控制点设备进行汇接并提供城域网到骨干网的出口，负责数据流的转发；业务应用层提供集中的业务接入控制和差异化服务质量管理。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">融合网的二级骨干网由有线电视二级中心机房（或称二级基站）及分中心机房构成，建议与两个或以两个上一级中心机房实现点对点连接，并与同级机房成星状连接。城域骨干网起到汇聚功能，完成区域汇接，实现业务汇聚、收敛和分发，并通过识别定位用户，实现用户分访问控制。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">融合网的接入网由有线电视三级机房（或称小区机房）及无线分布式基站组成，是通过接入技术和线路资源实现对用户的覆盖，并提供多业务的用户接入，是将用户快速有效接入业务接入控制，对用户节点实现一定的流量控制及策略管理。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">在融合网中，全媒体、云计算的全业务综合服务平台的建设至关重要。在综合服务平台利用云计算和数据处理功能，扩大内容分发网络容量和覆盖范围，提升服务能力和安全管理水平，增加网站接入带宽，优化空间布局，实现互联网信息源高速接入，开展双向业务平台及网络平台的全业务模式。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;"><section style="border-top: 2px solid rgb(232, 153, 45);border-right-color: rgb(232, 153, 45);border-bottom-color: rgb(232, 153, 45);border-left-color: rgb(232, 153, 45);box-sizing: border-box;"><section style="display: inline-block;padding-right: 0.5em;padding-left: 0.5em;background-color: rgb(232, 153, 45);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">城域融合网基础设施规划指标计算</strong></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">城域融合网是覆盖一个城市的地理范围，通过有线无线融合技术实现各个终端互联的通信网络。在城市建设中，为保证网络的通信质量，就需要规划城域融合网的基础设施的分布。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">以一个300万人口城市为例，依据《GY 5075-2005 城市有线广播电视网络设计规范》及《YD/T 1170-2001 IP网络技术要求——网络总体标准》标准计算，依据上述指标在建设智慧城市中需配套的基础设施规划。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">按照3人/户计算，300万人口城市的有线电视用户数为100万户。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">按照规范要求，每60万户需设立有线电视一级中心机房一座，面积为3000平方米。经核算，该市需建立有线电视一级中心机房两座，各为3000平方米。两座一级中心机房采用环形双路由连接方式。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">依据规范，每5万户需设立有线电视二级机房一座，面积为700平方米。经核算，需建立有线电视二级中心机房约20座，各为700平方米。每座二级中心机房与两座一级中心机房端对端连接，二级中心机房间成网型连接。同时，每座二级中心机房作为区域中心机房存在，与区域内三级机房成星型连接。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">依据规范，每0.1万-0.5万户需设立有线电视三级机房一座，面积为50-100平方米。经核算，该市需建立有线电视三级机房300-400座，各为50-100平方米。每座三级机房与区域二级中心机房端对端连接，并直接连接用户终端及无线终端。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">依据测算，城市密集区传输半径5-8平方公里设立无线基站1座，一般传输半径每10-20平方公里设立无线基站1座。每座无线基站与区域二级中心机房端对端连接，并通过无线网络连接用户终端及无线终端。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="text-align: center;margin: 10px 0%;box-sizing: border-box;"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;background-position: 0% 0%;background-repeat: repeat;background-size: auto;background-attachment: scroll;border-style: solid;border-width: 1px;border-radius: 6px;border-color: rgb(62, 62, 62);overflow: hidden;background-image: url("http://read.html5.qq.com/image?src=forum&q=5&r=0&imgflag=7&imageUrl=http://mmbiz.qpic.cn/mmbiz_png/icKFe0wqE4eNhbMv2nGyLrfwicdEIkXFnaWYcOJSibHoAia4KEC9aStW7LXvvECfYAkF6n0sGfWfEQ1xaaJy6CHHng/640?wx_fmt=png");box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="gulangu"><section style="margin-right: 0%;margin-bottom: -2px;margin-left: 0%;box-sizing: border-box;"><section style="display: inline-block;background-color: rgb(255, 255, 255);padding: 5px;border-style: none none solid;border-width: 1px;border-radius: 6px;border-color: rgb(62, 62, 62);overflow: hidden;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;background-color: rgb(216, 98, 34);border-width: 0px;border-radius: 6px;border-style: none;border-color: rgb(62, 62, 62);overflow: hidden;padding: 5px 10px;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="text-align: left;color: rgb(252, 242, 241);padding-right: 10px;padding-left: 10px;font-size: 18px;box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">结论</strong></p></section></section></section></section></section></section></section></section></section></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">有线电视运营网络具有网络覆盖面广，在县市级特别是乡镇广电网络具有覆盖优势，再与无线终端相结合，充分利用700M的极佳频谱资源，利用其高穿透性，大覆盖性等特性，将大幅降低智慧城市的运营成本。同时，广电网络具有内容可管可控的优势，具有很强的安全优势，而且广电网络有着几十年的播出运营经验，海量的电视节目存储等优势，因此推进建设有线无线融合网的智慧城市，将充分利用互联网技术和云数据，打通各行业间数据壁垒，共享城市数据实时更新，助力城市管理部门建设安全、高效、繁华、智慧的大数据城市，使城市基础设施利用更加充分，使社会管理更加精细化，使医疗、教育、交通等公共服务更加便捷，使城市生活更加智慧、高效。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="text-align: center;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;box-sizing: border-box;"><svg class="svg" 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fill="rgb(204,146,94)" style="box-sizing: border-box;"></path></g><g style="box-sizing: border-box;"><path d="M140.1,2.3c0,0.6-0.5,1.1-1.1,1.1c-0.6,0-1.1-0.5-1.1-1.1c0-0.6,0.5-1.1,1.1-1.1    C139.7,1.2,140.1,1.7,140.1,2.3z" fill="rgb(204,146,94)" style="box-sizing: border-box;"></path></g><g style="box-sizing: border-box;"><path d="M135.7,2.3c0,0.6-0.5,1.1-1.1,1.1s-1.1-0.5-1.1-1.1c0-0.6,0.5-1.1,1.1-1.1S135.7,1.7,135.7,2.3z" fill="rgb(204,146,94)" style="box-sizing: border-box;"></path></g><g style="box-sizing: border-box;"><path d="M131.3,2.3c0,0.6-0.5,1.1-1.1,1.1c-0.6,0-1.1-0.5-1.1-1.1c0-0.6,0.5-1.1,1.1-1.1    C130.8,1.2,131.3,1.7,131.3,2.3z" fill="rgb(204,146,94)" style="box-sizing: border-box;"></path></g></g></svg></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="font-size: 14px;color: rgb(160, 160, 160);box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;">作者单位：北京歌华有限电视网络股份有限公司</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"  /></p></section></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><section style="box-sizing: border-box;"><section style="font-size: 14px;color: rgb(160, 160, 160);box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;">原文发表于《北京规划建设》杂志2018年第6期。</p><p style="white-space: normal;box-sizing: border-box;">获授权微信首发，如需转载请联系本号。</p><p style="white-space: normal;box-sizing: border-box;"><br  /></p></section></section></section></section>
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