I 摘要 我国在 2013 年就提出了建设“宽带中国”的战略部署。当前我国正处于全面 建成小康社会决胜期，农村是全面实现小康的重点；习近平总书记在十九大报告 提出的“。实施乡村振兴战略”及“提高保障和改善民生水平，加强和创新社会 治理”，随着我国经济的发展，农村也跟随经济发展的步伐，在提高生活质量的 同时，对宽带的需求也不断增长。宽带业务在农村有着巨大的发展空间，网络信 息建设进入了由城市向农村扩展的阶段。中国移动承担着将宽带引入农村、助力 农村经济发展、促进实现国家战略目标的重要使命。 随着“互联网+”的广泛应用，城市网络建设不断完善，基本满足了人民日 益增长的美好生活需要。但是，我国农村宽带建设仍然处于初级阶段，聚焦农村 宽带建设既是我国全面建成小康社会的必然要求，也是通信运营商的发展战略， 有利于移动运营商大幅增长用户规模、提升企业效益，形成新的利润增长点。农 村地区建设移动宽带网络是一项系统的工程，受多方面的因素影响，其主要目标 是建设持续完善的移动网络。在农村地区建设基础网络，不能局限于经济效益 上，要进行全面分析和评价。农村移动用户具有规模小、应用不集中、整体分散 的特征，因此，农村移动网络建设项目具有建设投资大、见效周期长、日常维护 工作量大的特征。GY 地区地处四川省北部，是入川的重要通道和要塞，是苴国 故地三国重镇，是川陕革命根据地的重要组成部分。GY 地区自然环境复杂、地 形复杂而且经济条件有限，进一步加剧建设农村移动宽带的难度。 本文针对农村移动网络建设实践，以 GY 地区为研究背景，通过现状调查、 文献综述，综合运用移动网络系统结构分析和项目评价方法，主要从经济、社 会、技术、环境四个方面对项目可行性进行综合分析和评价，对项目选址、建设 规模、网络布局、环境影响和保护、社会影响等方面的可行性进行全面评价，本 文的可行性研究侧重于对宽带建设的风险管理，最重要的是经济风险，经济评估 的一个最重要指标是投入产出比。提出了针对农村移动网络建设的建议，并进一 步制定了农村移动网络建设的星级评定标准，对覆盖率、用户平均接入距离等服 务指标进行了科学评价。本文坚持社会效益与经济效益相统一、 可持续发展的 建设原则，着眼移动宽带网络的长期发展，综合考虑农村移动服务相关业务需 求，保证网络系统在未来保持持续适用。通过本文的研究，为全面探索农村网络 建设项目的发展思路，促进建设优质、高效的农村宽带具有十分重要的实践指导摘要 意义。 关键词，农村移动宽带，可行性研究，项目风险，技术方案;评价ABSTRACT III ABSTRACT Early in 2003, the strategy of BD China was put forward. And in the present critical period of building a well-off society, rural areas are key regions. As the economy grows, rural areas make effort to catch the pace of economic development. While improving life quality, rural people begin to have increasing demand for broadband. Broadband business still has plenty of room for development in rural areas, and the construction of network information has entered a phase of expanding from urban to rural areas. China Mobile, therefore, in this process, undertakes the important mission of introducing broadband to rural areas so as to assist rural economic development and promote the realization of national strategic goals. With the wide application of Internet +, the current construction of urban networks in China has been continuously improved, which basically is able to satisfy people's growing demand for a better life. However, the rural broadband construction is still in its infancy. Focusing on rural broadband construction is not only an inevitable requirement for China’s building a well-off society in an all-round way, but also a development strategy for communication operators, which will help mobile operators significantly enlarge their user scale and enhance their efficiency, thus forming a new profit growth point. The construction of mobile broadband networks in rural areas is a systematic project that would be affected by many factors. The main goal of the construction is to build an improving and perfect mobile network. And the constructing should not only be confined to economic benefits at small-scale. Instead, it must be comprehensively analyzed and evaluated from the perspective of building a whole large-scale network. Rural mobile users are scattered and small-scaled, so the network construction will need a large investment and unavoidably will experience a longer investment cycle. And thus, it will require more people to maintain the network. GY region is located in the north of Sichuan Province and is an important passage and fortress into Sichuan Province. Moreover, it is hometown of the three kingdoms in Cha Country in Chinese history. It is also an important part of the Sichuan-Shaanxi revolutionary base. However, the complex natural environment, complex terrain, and limited economic conditions of the GY region further exacerbate the difficulty of building rural mobile networks.ABSTRACT IV Based on the practice of rural mobile network construction, this paper studies broadband construction in GY as a case. Through applying research approaches such as status survey, literature review, and mobile network system structure analysis as well as project evaluation, a comprehensively analysis is carried out to assess the feasibility of project site selection, construction scale, network layout, environmental impact and protection as well as social impact from the perspectives of economy, society, technology and environment. And then a PON network structure for rural mobile network construction has been proposed. This thesis then further develops a star rating standard for evaluating rural mobile network construction projects, and makes scientific assessments of service indicators such as coverage rate and average user access distance. This thesis insists to unify social economic benefits with sustainable development. It mainly focuses on long-term development of mobile broadband networks, and comprehensively considers the needs of mobile service in rural areas to ensure that network system enjoys a long and continuous life in the future. This research, therefore, is of great practical guiding significance to fully exploring the development ideas of rural network construction projects and promoting the construction of high-quality and efficient rural broadband. Keywords: rural mobile broadband,feasibility study, technical solution,evaluation目录 V 目录 第一章 绪论.................................................................................................................... 1 1.1 研究背景及意义.................................................................................................... 1 1.2 国内外研究现状.................................................................................................... 2 1.3 研究内容与方法.................................................................................................... 5 第二章 相关理论概述.................................................................................................... 6 2.1 可行性分析的内涵................................................................................................ 6 2.2 常见方法................................................................................................................ 6 2.3 评价内容................................................................................................................ 7 第三章 农村移动宽带建设项目现状分析.................................................................... 9 3.1 家庭宽带网络结构和组成元素............................................................................ 9 3.3.1 整体网络结构图............................................................................................. 9 3.1.2 城域传送网网络结构图............................................................................... 10 3.1.3 网络元素........................................................................................................11 3.2 家庭宽带网络概况.............................................................................................. 14 3.2.1 端口占用情况............................................................................................... 14 3.2.2 宽带用户渗透情况....................................................................................... 15 3.2.3 数据网电路利用率调查............................................................................... 15 3.2.4 OLT 汇聚机房现状........................................................................................ 17 3.2.5 GY 分公司家宽全流程本地网络 ................................................................. 17 3.3 农村移动宽带项目的特征（面临的挑战）...................................................... 18 第四章 农村移动宽带建设可行性评价体系.............................................................. 20 4.1 评价原则.............................................................................................................. 20 4.1.1 社会效益与经济效益相统一....................................................................... 20 4.1.2 实用性原则................................................................................................... 20 4.1.3 可持续发展的原则....................................................................................... 20 4.1.4 定性方法和定量方法相结合的原则........................................................... 21 4.2 经济评价.............................................................................................................. 21 4.2.1 场景建设成本分析....................................................................................... 21 4.2.2 有线方式建设投资收益分析....................................................................... 22 4.2.3 无线方式建设投资收益分析....................................................................... 25目录 VI 4.3 社会效益评价...................................................................................................... 25 4.4 环境评价.............................................................................................................. 26 4.5 移动宽带建设模式评价...................................................................................... 27 第五章 农村移动宽带建设可行性技术方案研究...................................................... 30 5.1 农村家庭宽带建设场景分析.............................................................................. 30 5.1.1 场景模型....................................................................................................... 30 5.1.2 GY 地区农村家庭宽带分布 ......................................................................... 32 5.2PON 系统建设...................................................................................................... 34 5.2.1 PON 网络结构............................................................................................... 34 5.2.2 FTTx 组网模式.............................................................................................. 35 5.2.3 光分路器建设............................................................................................... 35 5.3 综合业务接入区建设.......................................................................................... 36 5.3.1 综合业务接入区划分................................................................................... 36 5.3.2 综合业务接入区总体目标........................................................................... 37 5.3.3 综合业务接入区建设方案........................................................................... 38 5.4 有线接入网家庭宽带网络建设.......................................................................... 50 第六章 结论.................................................................................................................. 55 致谢............................................................................................................................ 57