Method for forwarding data to idle mobile nodes, and home agent control node for use in the method
US6707809B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2000 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Feb 1, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W80/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Method for forwarding data from a source of the data to a mobile wireless node, such as a portable computing device, that undergoes a transition to an idle state. A home agent receives the data from the source. The home agent determines that there is no current or active mobility binding record for the mobile node, so it sends a data indication message to a home agent control node. The home agent control node looks up the mobile node in an idle mobility binding record database and identifies the last foreign agent that the idle mobile node was connected to. The home agent control node sends a page request to the identified foreign agent. If the mobile node responds to the page within a predetermined period of time, it will establish a connection with the foreign agent. Data is tunneled from the home agent to the foreign agent for delivery to the mobile node. If the mobile node does not answer the page within the time limit (such as in the case where the power to the mobile node has been turned off), the home agent queues some of the data for transmission to the mobile node when it connects later on, and drops the rest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.