摘要
Abstract
This paper proposed a simple and efficient link switching scheme for remote unit (RU) in digital fiber repeater. The key steps are as follows. Firstly, the proposed system detects communication links, and then switches the synchronous clock. Finally, the system changes mapping relation between physical interfaces and uplink and downlink data. The whole process is realized by FPGA. Experimental results show that when communication link failure (e.g., fiber failure and equipment failure) happens, ring network can be recovered by switching link. This link switching scheme makes system networking more flexible , and increases the reliability of system. This scheme can be used in the situation which requires high security.关键词
数字直放站/环网/链路切换/FPGAKey words
digital repeater/looped network/link switching/FPGA分类
电子信息工程
