SDH單向復(fù)用段自愈環(huán)的研究
RESEARCH OF SDH UNIDIRECTIONAL SHR
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摘要: 該文介紹了同步數(shù)字體系(SDH)自愈環(huán),描述了二纖單向復(fù)用段自愈環(huán)的結(jié)構(gòu),對比了它的兩種自動保護倒換(APS)方法,從降低分插復(fù)用器(ADM)設(shè)備的成本,自愈網(wǎng)上的定時方式和網(wǎng)元工作模式三方面對二纖單向復(fù)用段自愈環(huán)進行了分析。Abstract: 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.
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韋樂平,光同步數(shù)字傳輸網(wǎng),北京,人民郵電出版社,1993年3月,124-136.[2]ITU-T Rec. G.841, Types and characteristics of SDH network protection architectures, 1995.［3］Tsong-Ho Wu, Richard C. Lau, A class of self-healing ring architectures for SONET network applications, IEEE Trans. on Commun., 1992, 40(11), 1746-1756.[3]P. Anelli, M. Soto, Evaluation of the APS protocol for SDH rings reconfiguration, IEEE Tians.on Commun., 1999, 47(9), 1386-1393. -
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