地铁5G传输网络建设方案探讨

目前,5G技术已经日趋成熟。地铁作为口碑场景迫切需要进行5G覆盖,满足乘客的高速上网需求,并为智慧交通和智慧城市提供基础条件。针对地铁中站台、站厅及隧道3种区域,需使用不同的5G无线覆盖方案。针对地铁中纤芯租金较高的特点,提出DRAN、CRAN、无源波分、BBU光纤直驱等几种传输网络建设方案,分析几种建设方案的优缺点,并从投资和安全性进度进行对比给出选择建议。

Discussion on 5G Transmission Network Construction Scheme of Subway

At present,5G technology has become increasingly mature.As a word-of-mouth scenario,the subway urgently need,5G coverage to meet the needs of passengers for high-speed Internet access and provide the basic conditions for smart transportation and smart cities.For the three areas of the subway platform,station hall and tunnel,different 5G wireless coverage solutions are required.In view of characteristics of higher fiber core rents in subways,several transmission network construction schemes,such as DRAN,CRAN,passive WDM,and BBU fiber direct drive are proposed.The advantages and disadvantages of several construction schemes are analyzed,and selection suggestions are given from the comparison of investment and security progress.