摘要
基于通用处理平台的室内覆盖基站系统(mini C-RAN)是一种基于通用处理器研发的小型化、低功耗、高容量蜂窝覆盖的TD-LTE基站系统。由于TD-LTE系统对时间同步要求非常高,所以提出一种基于mini C-RAN的1 588时间同步方案。在基带池内部采用主从同步模型使其内部达到时间同步并向下级传输1588时间同步报文,在交换机内部采用透明时钟模型得到1588报文在交换机内部的传输时延。通过用1588时间分析仪测试其时间延迟在正负200 ns内,达到了TD-LTE基站系统要求。
The base station for indoor coverage on common processing platform（mini C-RAN） is a LTE base station of miniaturization,low-power,high capacity based on general processor.Because of the time synchronizationthat TD-LTE system need,so this paper presents a IEEE1588 time synchronization programme in mini C-RAN.In Base band Unit pool the master-slave synchronization model is used to achieve time synchronization and transmit 1588 time synchronization packets to the subordinate,the transmission time delay of 1588 packets in switch can be calculated with transparent clock model.By using the 1588 time analyzer test the time delay,the time delay can be in positive and negative 200 ns.and it reachs the TD-LTE base station system requirements.
作者
黄鹤飞
陈印锋
冯建武
Huang Hefei Cheng Yinfeng Feng Jianwu(Wuhan Research Institute of Posts and Telecommunications, Wuhan 430074, China Beijing Northern FiberHome Technologies Co. ,Ltd. , Beijing 100085,China)
出处
《电子测量技术》
2017年第6期34-37,共4页
Electronic Measurement Technology
