Title:
移動体IPネットワークシステムおよびコネクション切替え方法
Document Type and Number:
Japanese Patent JP3895176
Kind Code:
B2
Abstract:
In a mobile IP network system comprising a plurality of radio access networks 2 for connecting with mobile stations 1 via radio links and an IP network 102 connected with a plurality of packet nodes for transferring IP packets, each of the radio access networks has at least one base station controller 7 and at least one radio base station 6 connected to the base station controller. Each of the base station controllers 7 in the radio access network is connected to the plurality of packet nodes to each other via a network 104 and selects one of the plurality of packet nodes in accordance with a state of each mobile station to establish a logical connection to be used in IP packet communication of the mobile station.
Inventors:
Tetsuhiko Hirata
Tadashi Yano
Kensho Matsumoto
Susumu Matsui
Shoji Fukuzawa
Atsushi Teshima
Mika Mizutani
Tadashi Yano
Kensho Matsumoto
Susumu Matsui
Shoji Fukuzawa
Atsushi Teshima
Mika Mizutani
Application Number:
JP2001512749A
Publication Date:
March 22, 2007
Filing Date:
July 18, 2000
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H04W28/00; H04L12/28; H04L12/70; H04L12/715; H04L12/721; H04L29/06; H04W8/26; H04W24/00; H04W36/00; H04W76/02; H04W80/00; H04W80/04; H04W84/12; H04W92/02; H04W92/12; H04W92/24
Domestic Patent References:
| JP11075245A | ||||
| JP11103320A |
Attorney, Agent or Firm:
Polaire Patent Business Corporation
Katsuo Ogawa
Kyosuke Tanaka
Takashi Sasaki
Katsuo Ogawa
Kyosuke Tanaka
Takashi Sasaki