Architectures for a single-stage grooming switch

US6807186B2 · kind B2 · utility

Assignee

• LSI Logic Corporation · US

Inventors

• William J. Dally · Stanford, US
• John H. Edmondson · Arlington, US
• Donald A. Priore · Maynard, US
• Ephrem C. Wu · San Mateo, US
• John W. Poulton · Chapel Hill, US

Key dates

• Filing date: Jan 17, 2002
• Grant date: Oct 19, 2004
• Expiry date: Jan 17, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04Q3/521
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A single-stage grooming switch is provided for switching streams of multiplexed traffic, such as SONET STS-48, in both time and space domains. In particular, the switch implements a distributed demultiplexing architecture for switching between any input timeslot to any output timeslot at a reduced layout size. Furthermore, the distributed demultiplexing architecture results in low latencies being associated with reconfiguration of output permutations on the order of nanoseconds.