Signaling for timely forwarding in packet switching network with a common time reference
US6385198B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1998 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Jul 29, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5632
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This invention describes a method for controlling the creation of data paths of predefined capacity that is needed for timely forwarding of packets in networks where the switches maintain a common time reference. The invention describes a signaling controller that is responsive to a setup request by computing a route of switches for data transmission, and a transmission schedule, which consists of predetermined time frames in which the switches along the route may forward packets of said setup request. The invention describes a switch signaling controller, which operates in every switch and which sends and is responsive to messages regarding reserving and releasing bandwidth on the switch's ports. The invention describes a protocol by which end-stations, gateways, signaling controller, and switch signaling controllers communicate to establish paths of specified capacities; and algorithms for processing signaling messages and finding transmission schedule in the network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.