地铁隧道及站台无线覆盖方案
关键词：地铁隧道；站台；无线覆盖；泄漏电缆；天线
The Program Of Subway Tunnels And Stations Wireless Coverage
Abstract： In recent years, with the continuous development of city, many cities are racing to build subway. Subway because of its comfortable, fast and convenient, has become an important transport people to travel. In today's information society, for the majority of passengers to provide high-quality mobile communications services is quite important, so the subway tunnels and public communication platform of wireless network is particularly important. This paper discusses the subway tunnels and platforms in the wireless signal propagation environment, the design key points, tunnel switching interval link operation, village is analyzed, and emphatically discusses the different length of tunnel wireless coverage solutions, on the basis of the proposed antenna is used to implement wireless station hall, leakage cable tunnel is mainly used to realize. Platform based on metro tunnel, and the specific environment and the situation after the understanding, analysis, put forward a feasible design scheme of the metro tunnel and the platform of wireless network coverage to achieve an ideal effect, solve the problem of coverage blind area, to make the passengers have a open network communication environment, improve the driving safety, operation efficiency and management level, improve service quality.
KeyWords： subway tunnel；platform；wireless coverage；leaky cable；antenna
目录
1 绪论 1
1.1 课题的意义和研究现状 1
1.1.1 课题的意义 1
1.1.2 研究现状 1
1.2 发展趋势 2
2 地铁无线覆盖分析 ...3
2.1 地铁无线通信系统的覆盖 3
2.2 无线覆盖服务要求 3
2.3 覆盖设计方法和考虑因素 3
2.4 设计参数及影响因素 3
2.5 地铁中无线信号传播环境 4
2.6 地铁覆盖信号源的选择及优缺点分析 5
2.6.1 宏蜂窝基站 5
2.6.2 微蜂窝基站 6
2.6.3 射频拉远 6
2.7 各信号源优缺点分析 6
2.7.1 宏蜂窝基站的优缺点 6
2.7.2 微蜂窝基站的优缺点 6
2.7.3 直放站的优缺点 6
2.8 隧道覆盖天馈系统的选择 7
2.8.1 同轴馈电无源分布式天线 7
2.8.2 光纤馈电有源分布式天线 7
2.8.3 泄漏电缆 8
2.8.4 各种分布式天线系统对比 9
3 实现地铁无线覆盖方案分析 10