Mobile communication system and method thereof
US7515590B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2005 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | May 22, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W80/045
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An IP network system includes an IP network divided into a plurality of segments, an MN (mobile node) whose a Care of address is set for each segment where it is located, and a CN (corresponding node) which is a communication partner of the MN. The IP network system further includes a Care of Address managing unit for managing at least an old Care of Address set in a segment before movement of the MN and a new Care of Address set in another segment after movement of the MN, a packet receiving unit receiving a packet addressed to the old Care of Address at least after the MN is relocated to the another segment, the packet being transmitted from the CN, and a packet transfer unit transferring the packet addressed to the old Care of Address to the new Care of Address managed by the Care of Address managing unit, the packet addressed to the old Care of Address being received by the packet receiving unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.