A new shared protection scheme in optical network
نویسنده
چکیده
In this paper, we have proposed a restricted shared protection (RSP) scheme that provides restriction on the sharing of some of the backup light paths to increase the reliability of the protection in optical network. From the reliability theory, we have proved that the reliability in RSP network is more than that of existing shared protection (SP) network. As failure rate increases, the reliability of RSP decreases with slower rate than that of SP. For the study of RSP, we have considered routing based on minimum time delay and assign the wavelength using parallel reservation method. It is also observed that the blocking probability in RSP network is more than that of shared protection. To reduce the blocking probability we have used alternate path routing for both the protection schemes. It is seen that the blocking probability reduction using alternate path routing in case of RSP is more than that of SP.
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