基于GPON系统的PON保护设计  

Design of PON protection based on GPON system

作　　者：韩莉敏 HAN Limin(Wuhan Research Institude of Posts and Telecommunications,Wuhan 430070,China)

机构地区：[1]武汉邮电科学研究院,湖北武汉430070

出　　处：《电子设计工程》2021年第24期159-163,共5页Electronic Design Engineering

摘　　要：基于GPON系统的点到多点的拓扑结构,以提高GPON系统的设备和线路的安全可靠性为目的,对PON保护的方法进行了研究。实验采用的线卡拥有双CPU,因此需要对数据传输通道进行特殊设计。在Type B PON保护的组网下,依靠实际的GPON系统设备,对PON保护功能进行软件设计,并在多种场景和倒换方式下进行了保护倒换的测试。对该保护的倒换时间进行统计,得出倒换时间能够稳定保持在50 ms以内,且当网络负载较小时,倒换时间能达到10 ms以内。Based on the point⁃to⁃multipoint topology of GPON system,PON protection methods are studied in order to improve the security and reliability of equipment and lines in GPON system.The line card based on the experiment has double CPU,so a special design of data transmission channel is needed.Under the networking of Type B PON protection,depending on the actual GPON system equipment,the software of PON protection is designed,and the protection switching is tested in various scenarios and switching modes.A ccording to the statistics of the switching time of the protection is calculated,it is found that the switching time can be kept within 50 ms.And when the network load is low,the switching time even can be less than 10 ms.

关 键 词：GPON 手拉手保护 倒换时间 数据通道 

分 类 号：TN915.6[电子电信—通信与信息系统]