摘要
由于5G-R系统BBU连接RRU数量以及BBU与RRU之间的光纤拉远距离均有所限制,考虑到长大隧道施工及维护不便,在隧道内不设置BBU的情况下,长大隧道内5G-R覆盖方案值得重点研究。通过对各5G-R系统设备厂家进行调研,结合5G-R已发布的技术条件,首先对5G-R基站特点及组网方式进行分析,其次对5G-R隧道链路预算进行研究,提出隧道内5G-R RRU的设置间距;最后,结合不同长度的长大隧道场景,在隧道内不设置BBU设备的情况下,提出不同长度隧道下的5G-R的覆盖方案建议。
Due to the limited number of RRUs connected by BBUs and limited remote signal distance of optical fibers between BBUs and RRUs in the 5G-R system,and in view of the difficulties in the construction and maintenance of long tunnels,the 5G-R system coverage scheme for long tunnels deserves special attention under the condition of no BBU in the tunnel.On the basis of a survey of the equipment manufacturers and an analysis of the published technical conditions of the 5G-R system,this paper fi rstly analyzes the characteristics and networking method of 5G-R base stations.It then studies the link budget of and proposes a RRU setting interval for the 5G-R system in tunnels.In view of the scenarios of long tunnels of diff erent lengths,it fi nally provides suggestions on the coverage scheme for the 5G-R system in tunnels of diff erent lengths under the condition of no BBU in the tunnel.
作者
任超
刘伟川
葛伟涛
Ren Chao;Liu Weichuan;Ge Weitao(China Railway Design Corporation,Tianjin 300308,China;Signalling&Communication Department,China Railway Xi'an Group Co.,Ltd.,Xi'an 710054,China)
出处
《铁路通信信号工程技术》
2024年第10期29-34,共6页
Railway Signalling & Communication Engineering
基金
中国国家铁路集团有限公司科技开发项目(SY2021G001)
中国铁路设计集团有限公司科技开发项目(2023A0251204)。
