Method and mobile node for packet transmission in mobile internet protocol network
US8015603B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2007 |
| Grant date | Sep 6, 2011 |
| Priority date | — |
| Expiry date | Jun 9, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W80/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for packet transmission in an MIP network is disclosed. A mobile node sends to a Home Agent (HA) a first Firewall Detection (FD) packet encapsulated with IP security (IPsec) protocol and a second FD packet encapsulated with the IPsec protocol and User Datagram Payload (UDP) protocol. The mobile node determines whether there is a firewall blocking an IPsec packet between the mobile node and the HA according to a Firewall Detection Reply (FDR) packet from the HA. If there is a firewall, packets are encapsulated with the UDP protocol and binding update and packet exchange are performed; otherwise, binding update and packet exchange are performed. A mobile node for packet transmission is also provided. Embodiments of the present invention enables the mobile node to exchange a packet with a correspondent node when there is a firewall not supporting the IPsec protocol between the mobile node and the HA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.