Performance estimation of the protection with LCAS and virtual concatenation in metropolitan area networks
✍ Scribed by Yang, Wanchun ;Zhang, Jie ;Yu, Song ;Gu, Wanyi
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 113 KB
- Volume
- 16
- Category
- Article
- ISSN
- 1124-318X
- DOI
- 10.1002/ett.1077
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✦ Synopsis
The new techniques, link capacity adjustment scheme (LCAS) and virtual concatenation not only make SDH/SONET networks accommodate the data service efficiently, but also provide a high-layer protection for client services, under which no spare capacity needs to be reserved for protection and the service transmission continues unless all concatenated links have failed. In this paper, we analyse the performance of this kind of protection in ring topology and mesh topology respectively. The results show that the timeto-transmission halt for the first time exceeding 1 year can reach 99.999%, if the number of the independent concatenated links is greater than two. In addition, the protection performance is analysed in detail given the granted maximal decrease ratio of the service transmission bandwidth.