Patent ID: 7620401

Claim:
A wireless communications system comprising: two different wireless communications systems which are a first wireless communications system for medium and low data rate communication having a wide communication service area and a wireless communications system for high data rate communication having a local communication service area and mobile terminals which are connectable to any of said first and second wireless communications systems, wherein said mobile terminals comprising: a determining unit determining whether or not said mobile terminal is in the respective wirelessly communicative areas of said first and second wireless communications systems based upon determining signal strength of a received signal; a moving speed detecting unit detecting the moving speed of said mobile terminal; and a communication data rate detecting unit detecting the communication data rate of said mobile terminal; and a switching unit switching the connection of the mobile terminal with said first or second wireless communications systems based upon a comprehensive consideration of a result of determining whether or not in service areas and a result of detection of said moving speed detecting unit and said communication data rate detecting unit, wherein if it is determined from a result of said determination of said determining unit and a result of comparison between said moving speed which is detected by said moving speed detecting unit and said communication data rate which is detected by said communication data rate detecting unit and respective preset threshold that said mobile terminal is to be connected to said first or second wireless communications system, or that connection of said mobile terminal with said first or second wireless communications system is to be switched, said determined result is informed to a user together with said determination result and said detection result, so that said mobile terminal is connected to said first or second wireless communications system which is selected by the user.