Nec Corporation

Naoko Yaoya

Hiroshi Sato

Saburou Ikeda

Takemasa Takahashi

Chizuko Yoshida

Mariko Mori

Masatoshi Mizobe

Hiromi Atsuta

A handover processing method in a satellite communications system allowing stable and reliable handover process is disclosed. Schedule information is previously registered in each of the satellites. The schedule information of each satellite includes a radius of a coverage area thereof, a point of time provided thereto, and physical locations of a center point of the coverage area thereof according to the point of time. A handover start time is calculated based on the schedule information and the physical location of a mobile station. A control signal regarding the handover start time is transmitted to an adjacent satellite. Since the handover start time is known in advance at both the first satellite and the adjacent satellite, the handover can be performed and completed between them without sending handover request signal.

Satellite communications system and handover processing method

Telephone call fee notifying system and apparatus for informing a calling subscriber of a fee for telephoning a destination before talking starts. When the calling subscriber dials a special number, this special number is recognized by a charging information request recognizing unit, a telephone call fee for a connection destination is calculated in response to subsequently transmitted dialing by means of a charging calculation unit and a calculated telephone call fee is informed to the calling subscriber in the form of a speech by means of a charging information speech outputting unit. Listening to the speech, the calling subscriber decides whether a circuit connection is to be done or not and when the circuit connection is determined, an operation therefor is carried out to establish a connection to the desired connection destination.

Telephone call fee notifying system and telephone call fee notifying

Growing community of inventors

Tokyo, Japan

Naoko Yaoya