Title:
CELLULAR COMMUNICATION SYSTEM AND MOBILE STATION AND METHOD IN THE CELLULAR COMMUNICATION SYSTEM
Document Type and Number:
Japanese Patent JP3688646
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To decrease transmission of information unnecessary for transition of systems in the case that a mobile station in a waiting state or a communication state in one system starts communication in the other system.
SOLUTION: The communication system of this invention comprises first and second cellular communication networks. The cellular communication system allows a mobile station to acquire control channel information including information for communication using a control channel in a prescribed cell of the second cellular communication network by utilizing a control channel or a communication channel in a cell of the first cellular communication network. When the mobile station desires communication within a prescribed cell, the second cellular communication network transmits communication channel information including information for the communication to the mobile station by utilizing the communication channel in a prescribed cell and utilizing the communication channel information. The mobile station utilizes the communication channel decided on the basis of the communication channel information to start communication at a prescribed cell.
Inventors:
Masuda Masashi
Akihiro Maehara
Seigo Harano
Akihiro Maehara
Seigo Harano
Application Number:
JP2002072693A
Publication Date:
August 31, 2005
Filing Date:
March 15, 2002
Export Citation:
Assignee:
NTT DoCoMo, Inc.
International Classes:
H04B7/26; H04W16/32; H04W36/14; H04W36/30; H04W48/10; H04M1/725; H04W48/16; H04W48/18; H04W88/06; (IPC1-7): H04Q7/38; H04B7/26; H04Q7/22; H04Q7/36
Domestic Patent References:
| JP2000092541A | ||||
| JP11018130A | ||||
| JP5327598A |
Attorney, Agent or Firm:
Tadahiko Ito