Network address translation for tunnel mobility
US8345694B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2007 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Aug 27, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L61/2514
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An access terminal identity based mobility is provided in which a first network tunnel is established between an access gateway and a first access router, and a second network tunnel is established between the access gateway and a second access router. At the access gateway, source addresses of packets sent from an access terminal to a remote correspondent node are translated by replacing the local address of the access terminal with the public address of the access terminal. The access terminal continuously maintain a communication session with the correspondent node as the access terminal moves from a first location to a second location and switches from accessing the first access router to accessing the second access router. A mapping between the local address and the public address is updated as the access terminal switches from the first access router to the second access router.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.