Abstract: Information about a past channel connection history accompanying movements of a user is stored in a mobile phone. When a channel is connected with a new base station by turning the power on or by a hand-over, the information about a channel connection history is searched, then one or more cell to which the user may move is predicted, and to those cells, a determination of a hand-over is performed preferentially. Thereby, an increase in power consumption of the mobile terminal is prevented.

Abstract: Information about a past channel connection history accompanying movements of a user is stored in a mobile phone. When a channel is connected with a new base station by turning the power on or by a hand-over, the information about a channel connection history is searched, then one or more cell to which the user may move is predicted, and to those cells, a determination of a hand-over is performed preferentially. Thereby, an increase in power consumption of the mobile terminal is prevented.

Abstract: A login permission method improving network security and efficiently performing a login process is disclosed. In a host-based network, information required for outside login is previously registered with the host-based network. When an outside login request is received from a terminal through the communications line, it is determined whether user's login information is validated based on the registered information required for outside login. Only when the user's login information is validated, the terminal is permitted to log in to the host-based network from outside.

Abstract: In a network system including a wireless mobile communications system, when establishing a connection between a wireless mobile terminal and a host computer connected to a stationary network system, the wireless mobile terminal produces a connection establishment request signal including first information which is required to obtain services from the host computer and then transmits the connection establishment request signal to the host computer. The host computer verifies the first information included in the connection establishment request signal received from the wireless mobile terminal and transmits a response signal back to the wireless mobile terminal only when the first information has been verified. This causes the connection to be established between the wireless mobile terminal and the host computer.