Method and system for digital communication through infrastructure network with receiving stations according to their geographical status
US8243646B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2008 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Apr 7, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/1854
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method and system of computer communication through an infrastructure multicast IP network, between one or several determined central stations and undetermined groups of receiving stations, especially mobile stations. According to the invention, every mobile station sends its geographical status, e.g. its position, in an IP unicast message to the central station. In response, the mobile station receives an IP unicast message comprising one or more IP multicast addresses corresponding to the transmitted geographical status. The central station also has the necessary routers subscribed or unsubscribed to these multicast addresses, according to the local presence of such receiving stations. Receiving stations may then subscribe such localized multicast addresses, and receive the corresponding multicast messages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.