Mobile IP intra-agent mobility
US6621810B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 1999 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | May 27, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for enabling intra-agent mobility by a mobile node are disclosed, thereby permitting a mobile node to register with a Home Agent via a Foreign Agent where the Home Agent and the Foreign Agent are provided in the same router. A method of registering a mobile node visiting a Foreign Agent with a Home Agent includes receiving a registration request packet specifying a Home Address and a care-of address. It is then determined whether the Home Address specified in the registration request packet is equivalent to a Home Agent address associated with the router. In addition, it may be determined whether the care-of address specified in the registration request packet is equivalent to a Foreign Agent address advertised by the router. Alternatively, it may be determined whether the D bit specified in the registration request packet is set and the care-of address specified in the registration request packet is a collocated care-of address. The mobile node may then be registered with the Home Agent through the use of a physical interface on the router rather than creating or specifying a tunnel interface to reach the mobile node or the Home Agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.