td-scdma室内覆盖系统规划设计.doc

TD-SCDMA室内覆盖系统规划设计

摘 要
3G的魅力在于高速数据与多媒体业务，而视频电话、视频流、游戏等高速数据业务一般都发生在舒适的室内环境中，这些业务功能都需要较大的系统容量和良好的网络质量。3G时代60%～70%的数据业务将发生在室内，欧美国家和中国香港地区的统计显示室内移动电话话务量约占总话务量的1/3；日本NTT DoCoMo公司的调查发现3G用户的室内使用量占到了70%，而室外使用量只有30%。对运营商而言，大量使用室内覆盖系统，可以争夺室内的话务量。NTT DoCoMo公司统计，实施室内覆盖的建筑物内话务量增大了1.43倍。室内覆盖还可以用于分散过密地区的网络压力，解决高端用户密集城区覆盖问题，减少室外基站的数量和配置，降低室外网络的整体干扰水平，从而提高整个系统的容量，更好地满足用户对质量的要求，其性能的好坏将直接影响到运营商的客户体验及收益，是其取得成功的关键因素之一。
　解决室内覆盖的主要方法是建设室内覆盖分布系统，室内分布系统的基本原理是将室外信号通过有线方式引入到室内，再通过小型天线将信号发送出去，从而提高室内覆盖水平。TD-SCDMA是3G三大主流技术之一，TD-SCDMA室内分布系统将是TD-SCDMA整个网络建设的重点之一。本文将从一些工程经验出发，分析TD-SCDMA室内分布系统设计的特点，并总结出一些方法和技巧。

关键词：3G；  TD-SCDMA;  室内覆盖
Abstract
3G is the charm of high-speed data and multimedia services, and video telephony, video streaming, gaming and other high-speed data services are usually occurred in a comfortable indoor environment, these business functions require a large network of system capacity and good quality. 3G era 60% to 70% of the data services will take place indoors, Europe and the United States and China, Hong Kong's statistics show that the total indoor mobile telephone traffic telephone traffic about 1 / 3; Japan's NTT DoCoMo's 3G user survey indoor use accounted for 70%, while only 30% of outdoor use. Of the operators, extensive use of indoor coverage system,Can compete for the indoor telephone traffic. NTT DoCoMo, Inc., the implementation of telephone traffic within the building indoor coverage increased 1.43 times. Indoor coverage can also be used to disperse the pressure over the network density areas, dense urban settlement covering high-end users, reduce the number of outdoor base stations and configured to reduce the overall interference level outside the network, thereby enhancing the capacity of the entire system to better meet user quality requirements, the performance is good or bad will have a direct impact on the operator's customer experience and revenue, is the key factor for success.
The main way to solve indoor coverage is to build indoor coverage distribution system, the basic principles of indoor distribution system is to outdoor signal through wire introduced into the room, then through a small antenna to send out the signal so as to enhance the level of indoor coverage. TD-SCDMA is one of the three 3G mainstream technology, TD-SCDMA indoor distribution system, TD-SCDMA will be one of the major construction of the entire network. Some works from this experience, analysis of TD-SCDMA indoor distribution system design features, and summarize some of the methods and techniques.
Key words：3G;  TD-SCDMA;   Indoor coverage
目 录
摘 要 - 1 -
第1章 绪论 - 5 -
1.1 3G网络室内覆盖系统的重要性 - 5 -
1.2 TD-SCDMA简介 - 6 -
1.2.1TD-SCDMA网络试验和商用概况 - 8 -
1.2.2TD-SCDMA标准的现状 - 10 -
1.2.3TD-SCDMA标准的后续发展 - 10 -
第2章 TD-SCDMA室内覆盖系统的组成 - 12 -
2.1信号源 - 13 -
2.2传输介质和分布系统 - 15 -
2.3元器件和天线 - 16 -
第3章 TD-SCDMA室内覆盖系统规划与设计 - 17 -
3.1组网原则及建设原则 - 17 -
3.1.1组网原则 - 18 -
3.1.2建设原则 - 18 -
3．2技术指标要求 - 18 -
3.3 TD-SCDMA室内覆盖系统建设流程 - 19 -
第4章 容量配置方案 - 22 -
4.1人口密度和用户密度估算 - 22 -
4.2室内分布系统话务模型 - 23 -
4.2.1语音业务 - 23 -
4.2.2可视电话业务 - 24 -
4.2.3数据业务 - 25 -
4.2.4典型场景容量预测 - 26 -
4.3 TD-SCDMA室内覆盖信号源配置参考 - 26 -
第5章 覆盖方案 - 28 -
5.1室内传播模型 - 28 -
5.2室内覆盖场强预测方法 - 29 -
5.3室内覆盖典型环境单天线覆盖能力 - 30 -
5.4天线功率需求及布放原则 - 30 -
5.5天线布放参考 - 31 -
5.5.1客房楼层天线的布放 - 31 -
5.5.2办公楼层的覆盖 - 34 -
5.5.3大型办公区域的覆盖 - 37 -
5.5.4地下停车库的覆盖 - 39 -
5.5.5娱乐场所的覆盖 - 40 -
5.5.6电梯的覆盖 - 41 -
5.5.5卫生间的覆盖 - 43 -
5.6 TD-SCDMA室内覆盖信号源功率参考 - 46 -
第6章 TD-SCDMA与其他系统共用室内覆盖系统 - 47 -
6.1系统如何合路 - 47 -
6.2功率匹配问题 - 47 -
6.3TD-SCDMA与其它系统共用室内分布系统的网络规划 - 48 -
6.4双TD-SCDMA室内分布系统时的网络规划 - 51 -
结 论 - 53 -
致 谢 - 54 -
参考文献 - 55 -