%0 Journal Article
%T RESEARCH OF SDH UNIDIRECTIONAL SHR<br>SDH单向复用段自愈环的研究
%A Wu Xiang
%A Wang Yichao
%A Feng Zhongxi
%A <br>伍翔
%A 王一超
%A 冯重熙
%J 电子与信息学报
%D 2001
%I 
%X This paper reviews the SDH SHR, summarily depicts the architecture of U-SHR. Two APS methods of U-SHR are compared. Finally, this paper addresses the problems of lowering the cost of ADM device, timing manners in the U-SHR and working mode of the network element.
%K Synchronous Digital Hierarchy (SDH)
%K Self-Healing Ring(SHR)
%K Automatic Protection Switching (APS)
%K Add Drop Multiplexer(ADM)
%K Timing<br>同步数字体系
%K 自愈环
%K 自动保护倒换
%K 分插复用器
%K 单向复用段
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=196D78540CA3F7AE&yid=14E7EF987E4155E6&vid=EA389574707BDED3&iid=59906B3B2830C2C5&sid=995E04834DE9F169&eid=40DE18199B7CA9BB&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=4