Distributed Self-Healing Control in SONET [Vol. 1, No. 2, 1993]

Distributed Self-Healing Control in SONET

Hideki Sakauchi
C&C Systems Research Laboratories
NEC Corporation
4-1-1 Miyazaki, Miyamae-ku
Kawasaki, Kanagawa 216, Japan

Yasuyo Okanoue
Overseas Transmission Division
NEC Corporation

Hiroyuki Okazaki
C&C Systems Research Laboratories
NEC Corporation
4-1-1 Miyazaki, Miyamae-ku
Kawasaki, Kanagawa 216, Japan

Satoshi Hasegawa
C&C Products Technologies Development Laboratories
NEC Corporation

Abstract
This paper proposes a distributed self-healing architecture which contains two self-healing techniques. In this proposal, a path restoration by Self-Healing Ring (SHR) and a path restoration by Dynamic Self-Healing (DSH) algorithm are jointly applied in a network. In the architecture, SHR is applied for a part of a path which is terminated by an Add-Drop Multiplexer (ADM), and DSH is applied for another part of a path which is terminated by two Digital Cross-Connect Systems (DCSs). Based on the architecture, DSH can be applied for a part of a path which is terminated by an ADM. Next, a network design algorithm is described in order to optimize the amount of spare capacity. As a result, spare capacity reduction is realized by using the algorithm for a network where the proposed architecture is applied

Keywords: Restoration; self-healing; transport network; SONET.

JNSM: Vol. 1, No. 2, 1993 Distributed Self-Healing Control in SONET [Vol. 1, No. 2, 1993]

NOTE: only abstract of paper available on-line

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