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Adaptation of p-Cycle considering QoS Constraints in WDM Networks  

Shin, Sang-Heon (Dept.of Information Communication Engineering, Yeungnam University)
Shin, Hae-Joon (Dept.of Information Communication Engineering, Yeungnam University)
Kim, Young-Tak (Dept.of Information Communication Engineering, Yeungnam University)
Publication Information
Journal of KIISE:Information Networking / v.30, no.5, 2003 , pp. 668-675 More about this Journal
Abstract
In this paper, we propose an enhanced p-cycle (preconfigured protection cycle) scheme for WDM mesh networks with QoS constraints. In the previous researches on p-cycle, it is assumed that user's connection has a hi-directional connectivity and the same bandwidth on both direction. Therefore it is difficult to apply p-cycle based link protection to uni-directional connections for multicasting or asymmetric broadband multimedia communications with hi-directional connectivity. And it didn't consider QoS of backup path. We enhanced the p-cycles to accomodate uni-directional connections for multicasting or asymmetric bandwidth communications with hi-directional connectivity. And we propose a selection procedure of p-cycle to assure QoS of backup path. We were able to reduce a required backup bandwidth by applying a uni-directional p-cycle concept to asymmetric broadband multimedia communication environment. The proposed p-cycle selection procedure is applied to the U.S. sample network to evaluate whether the configured p-cycles can support QoS constraint of working path and backup path.
Keywords
p-cycle; Automatic restoration; p-cycle; Network fault restoration;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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