Communication system, mobile terminal, relay apparatus, and transfer route learning method
US7664878B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2006 |
| Grant date | Feb 16, 2010 |
| Priority date | — |
| Expiry date | Dec 22, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/0019
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communication system includes a relay apparatus which offers an access link to a mobile terminal, a layer 2 switch which relays data between the relay apparatus and a router on a next hop from a communication destination terminal of the mobile terminal, and a route information notification unit. The route information notification unit notifies, to the relay apparatus and the layer 2 switch in a subnet where the mobile terminal is present, route information including a data link layer unicast address of a packet addressed to the mobile terminal, and a data link layer multicast address thereof in a case where the mobile terminal is activated and in a case where the mobile terminal switches a connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.