A high performance switch for OC-12 SONET self-healing ring networks

Author

Takatori, Masahiro ; Nakano, Yukio ; Ashi, Yoshihiro ; Fujita, Hiroyuki ; Mizukami, Masao ; Itoh, Kunihiro

Author_Institution

Telecom. Div., Hitachi Ltd., Kanagawa, Japan

Volume

14

Issue

2

fYear

1996

fDate

2/1/1996 12:00:00 AM

Firstpage

353

Lastpage

361

Abstract

The progress of ITU-T and ANSI standards on SDH/SONET is accelerating the evolution of transmission systems all over the world. The advanced operation administration and maintenance (OAM) functions it provides makes it possible to create a self healing ring network which protects against failure. This self-healing ring consists of add/drop multiplexers (ADM´s). The switch in the ADM plays an important role in achieving self-healing operation. In this paper, self-healing ring architecture and operations are analyzed in order to determine the requirements for the ADM switch. On the basis of this result, new space division switching methods, which significantly reduce the amount of hardware needed, are proposed. A parallel processing architecture which makes it possible to develop a low-cost large-scale switch is also devised. Finally, a developed switch LSI chip is presented. Combining two identical chips with the proposed parallel processing architecture, a 32×32 STS-3 switch (5 Gb/s throughput) with an STS-1 time slot interchange (TSI) function is realized

Keywords

ANSI standards; CMOS digital integrated circuits; SONET; large scale integration; maintenance engineering; multiplexing equipment; network topology; parallel architectures; space division multiplexing; synchronous digital hierarchy; telecommunication network reliability; 5 Gbit/s; ADM switch; ANSI standards; CMOS; ITU-T standards; LSI chip; OAM; OC-12 SONET self-healing ring networks; SDH/SONET; STS-1 time slot interchange; STS-3 switch; add/drop multiplexers; administration; failure protection; high performance switch; low cost large scale switch; maintenance; operation; parallel processing architecture; self-healing ring architecture; space division switching methods; throughput; transmission systems; ANSI standards; Acceleration; Add-drop multiplexers; Hardware; Large-scale systems; Parallel processing; Protection; SONET; Switches; Synchronous digital hierarchy;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/49.481943

Filename

481943