黄鹤飞,陈印锋,冯建武.基于mini C RAN的IEEE1588时间同步方案[J].电子测量技术,2017,40(6):34-37
基于mini C RAN的IEEE1588时间同步方案
Design of IEEE1588 time synchronization in mini C RAN
  
DOI:
中文关键词:  室内覆盖  mini C RAN  通用处理器  时间同步
英文关键词:indoor coverage  mini C RAN  general processor  time synchronization
基金项目:
作者单位
黄鹤飞 1.武汉邮电科学研究院武汉430074; 2.北京北方烽火科技有限公司北京100085 
陈印锋 1.武汉邮电科学研究院武汉430074; 2.北京北方烽火科技有限公司北京100085 
冯建武 1.武汉邮电科学研究院武汉430074; 2.北京北方烽火科技有限公司北京100085 
AuthorInstitution
Huang Hefei 1. Wuhan Research Institute of Posts and Telecommunications, Wuhan 430074, China; 2. Beijing Northern FiberHome Technologies Co.,Ltd., Beijing 100085,China 
Cheng Yinfeng 1. Wuhan Research Institute of Posts and Telecommunications, Wuhan 430074, China; 2. Beijing Northern FiberHome Technologies Co.,Ltd., Beijing 100085,China 
Feng Jianwu 1. Wuhan Research Institute of Posts and Telecommunications, Wuhan 430074, China; 2. Beijing Northern FiberHome Technologies Co.,Ltd., Beijing 100085,China 
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中文摘要:
      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1588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。
英文摘要:
      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.
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