Title:
MOBILE NODE
Document Type and Number:
WIPO Patent Application WO/2004/057903
Kind Code:
A1
Abstract:
A mobile node (10) for performing a high quality handover processing that causes no communication interruption time and maintains an excellent communication continuation, has an interface function for connection to networks. A network quality monitor part (12) monitors the network quality on the basis of at least one of a radio band and the intensity of a radio wave received by network devices (11-1 through 11-n). In accordance with the state of the network quality, a handover control part (13) transmits, before an interruption of communication, a cover address to an address-registered destination, and changes communication information paths, thereby performing a handover for switching over to the connection of a new network. Receiving a response indicating that the cover address has been updated by the address-registered destination, a network control part (14) maintains, until the interruption of communication, the function of the reception via the current network.
Inventors:
KAMURA TAKESHI (JP)
TSUJI NAOTAKA (JP)
SEGUCHI YOSHIYUKI (JP)
MURAOKA KAZUHIRO (JP)
ABETA HIDETOSHI (JP)
KOGANEMARU HIRAKU (JP)
YASHIRO ZENICHI (JP)
KOIKE HITOSHI (JP)
FUJINO NOBUTSUGU (JP)
IIZUKA FUMIYUKI (JP)
NAKAGAWA ITARU (JP)
NAKATSUGAWA KEIICHI (JP)
FUSE MASAHIKO (JP)
TSUJI NAOTAKA (JP)
SEGUCHI YOSHIYUKI (JP)
MURAOKA KAZUHIRO (JP)
ABETA HIDETOSHI (JP)
KOGANEMARU HIRAKU (JP)
YASHIRO ZENICHI (JP)
KOIKE HITOSHI (JP)
FUJINO NOBUTSUGU (JP)
IIZUKA FUMIYUKI (JP)
NAKAGAWA ITARU (JP)
NAKATSUGAWA KEIICHI (JP)
FUSE MASAHIKO (JP)
Application Number:
PCT/JP2002/013331
Publication Date:
July 08, 2004
Filing Date:
December 19, 2002
Export Citation:
Assignee:
FUJITSU LTD (JP)
KAMURA TAKESHI (JP)
TSUJI NAOTAKA (JP)
SEGUCHI YOSHIYUKI (JP)
MURAOKA KAZUHIRO (JP)
ABETA HIDETOSHI (JP)
KOGANEMARU HIRAKU (JP)
YASHIRO ZENICHI (JP)
KOIKE HITOSHI (JP)
FUJINO NOBUTSUGU (JP)
IIZUKA FUMIYUKI (JP)
NAKAGAWA ITARU (JP)
NAKATSUGAWA KEIICHI (JP)
FUSE MASAHIKO (JP)
KAMURA TAKESHI (JP)
TSUJI NAOTAKA (JP)
SEGUCHI YOSHIYUKI (JP)
MURAOKA KAZUHIRO (JP)
ABETA HIDETOSHI (JP)
KOGANEMARU HIRAKU (JP)
YASHIRO ZENICHI (JP)
KOIKE HITOSHI (JP)
FUJINO NOBUTSUGU (JP)
IIZUKA FUMIYUKI (JP)
NAKAGAWA ITARU (JP)
NAKATSUGAWA KEIICHI (JP)
FUSE MASAHIKO (JP)
International Classes:
H04L12/26; H04L12/28; H04L12/701; H04L29/06; H04W36/00; H04W36/08; H04W36/24; H04W36/30; H04W36/36; H04W40/34; H04W8/26; H04W24/00; H04W40/02; H04W60/00; H04W80/00; H04W80/04; (IPC1-7): H04Q7/38; H04L12/28; H04L12/46; H04L12/56
Foreign References:
| JP2000115236A | 2000-04-21 | |||
| JP2002125254A | 2002-04-26 | |||
| JPH0645990A | 1994-02-18 | |||
| JPH10126830A | 1998-05-15 | |||
| JP2001258058A | 2001-09-21 |
Other References:
See also references of EP 1575320A4
Attorney, Agent or Firm:
Hattori, Kiyoshi (GE EDISON Bldg. Hachioji 9-8, Azuma-ch, Hachioji-shi Tokyo, JP)
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