Title:
ROAMING SYSTEM, MOBILE COMMUNICATION SYSTEM, AND MOBILE COMMUNICATION CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2005/062645
Kind Code:
A1
Abstract:
There is provided a system for judging validity of a radio terminal according to identification information on the radio terminal and providing a service. A radio network is divided into a plurality of zones. For each of the zones, there is arranged a server for storing in a particular zone, the position of the directory containing identification information on each radio terminal without storing identification information on the radio terminal registered in other zone. By communication between the server and zone controllers, the identification information on the radio terminal is confirmed and a service is provided. Thus, it is possible to realizing a roaming system capable of performing an ideal roaming without increasing the volume of the system resource.
Inventors:
MATSUHASHI KEIICHI (JP)
Application Number:
PCT/JP2004/019282
Publication Date:
July 07, 2005
Filing Date:
December 16, 2004
Export Citation:
Assignee:
KENWOOD CORP (JP)
MATSUHASHI KEIICHI (JP)
MATSUHASHI KEIICHI (JP)
International Classes:
H04W8/04; H04W84/02; (IPC1-7): H04Q7/34
Domestic Patent References:
| WO2001069948A1 | 2001-09-20 |
Foreign References:
| EP0690647A2 | 1996-01-03 |
Other References:
See also references of EP 1699250A4
Attorney, Agent or Firm:
Okabe, Masao (Fuji Bldg. 2-3, Marunouchi 3-chom, Chiyoda-ku Tokyo 05, JP)
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