Communication method and communication system
US8737396B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2012 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Jul 15, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/741
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A server associates a permitted terminal identifier that identifies a permitted terminal permitted to perform tunnel communication to a first router with an endpoint address of a tunnel used in the communication of a permitted terminal. A second router that encapsulates a packet received from a requesting terminal, which requests the tunnel communication, inquires the server about an endpoint address associated with an identifier of the requesting terminal. The server notifies the second router of the target address that is the endpoint address associated with the identifier of the requesting terminal. The second router transmits the encapsulated packet to the target address. The first router to which the target address is allocated regards a received packet received at the target address as a packet used in the tunnel communication of the permitted terminal and decapsulates the received packet and then transmits the decapsulated packet to a communication destination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.