Method and apparatus for improved IP networks and high-quality services
US7583661B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 2005 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Dec 3, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/64
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides a new type of router, called a PACS router, to build an improved IP network in which high-quality services such as voice and best-effort data services can be provided with higher reliability and lower cost. A PACS router includes a packet-switching fabric and a circuit-switching fabric interconnected by channelized high-speed links. A network built with PACS routers uses signaling and routing protocols to segregate traffic into different classes and route them using circuit-channels and packet-channels depending on quality of service requirements. Routing high-quality service over circuit-channels eliminates transit delay typically incurred in packet-switching fabrics, enhances reliability from software malfunction in the router and enhances network scalability by not having to terminate all traffic into packet-switching fabrics in every router. The circuit-switching fabrics in the PACS routers provide further immunity by fast rerouting of failed circuits via alternate routes when a network fault is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.