Method of multicast message distribution
US4864559A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1988 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Sep 27, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13388
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for multicast communication wherein a multicast message is distributed to all the nodes in a multicast range. If a multicast message has a multicast range which is larger than one link in the network then the message is forwarded along a unique set of pathways through the range. The unique set of pathways is called a multicast spanning tree and is unique to all nodes which can communicate directly by virtue of a list of known nodes. The network is divided into areas each of which contains a group of directly communicating nodes. A group of nodes designated as level two nodes facilitates communication between the nodes in different areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.