Method of establishing transmission group numbers for network links
US4954821A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1988 |
| Grant date | Sep 4, 1990 |
| Priority date | — |
| Expiry date | Mar 15, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/24
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention enables two nodes in a communications network to dynamically establish the transmission group number used to partially identify a given link between the nodes. When the link is being activated, both nodes simultaneously propose either a zero or a non-zero number to each other in an exchange of exchange identification (XID) messages. If only one of the nodes proposed a non-zero number, that non-zero number is selected as the transmission group number. If both nodes had proposed zero or both had proposed non-zero numbers, predetermined criteria are employed to select a controlling node. The controlling node chooses the final transmission group number and communicates that choice to the non-controlling node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.