关于光纤直放站超远覆盖导致手机接入困难的解决方案  

The Solution to the difficulty of mobile phone access caused by ultra far coverage of optical fiber repeater

作　　者：蒋明凯 明雪松 孙新轲 JIANG Mingkai;MING Xuesong;SUN Xinke(Zigong Branch of China Telecom,Zigong 643000,China;Sichuan Branch of Jingxin Network System Co.,LTD.,Chengdu 610000,China)

机构地区：[1]中国电信自贡分公司,四川自贡643000 [2]京信网络系统股份有限公司四川分公司,四川成都610000

出　　处：《通信与信息技术》2022年第6期92-94,共3页Communication & Information Technology

摘　　要：运营商在现网中大量应用了光纤直放站去解决局部信号覆盖不足的问题。在实际应用中,光纤直放站的拉远距离从几百米到几公里不等。在超过4KM以上的超远距离覆盖中,由于基站对空口的传输时延有要求,可能会导致用户手机接入失败的问题。基于实际案例分析,推导出不同拉远距离需要相应修改基站配置参数,以满足基站对直放站拉远距离的要求。TIn the existing network,operators use a large number of optical fiber repeater to solve the problem that local signal cov⁃erage is insufficient.In practice,the distance of optical fiber repeater is from several hundred meters to several kilometers.In the ultra long distance coverage of more than 4KM,the base station has requirements on the transmission delay of the air port,which may lead to the failure of the user's mobile phone access.Based on the case analysis,it is deduced that the configuration parameters of the base sta⁃tion should be modified accordingly for different distances to meet the requirements of the base station for the distance of the repeater.

关 键 词：光纤直放 超远覆盖 循环移位 传输时延 

分 类 号：TN929.5[电子电信—通信与信息系统]