Ntt Docomo, Inc.

Ntt Mobile Communications Network, Inc.

Toyota Nishi

Akira Kaiyama

Takeshi Sugiyama

Tooru Hasegawa

Narumi Umeda

Akihiro Higashi

Kazuyuki Kozu

Hironari Kobayashi

Toru Hasegawa

Hiroshi Matsunaga

An authentication system comprises a register image storage unit, which stores a pre-registered register image of a mobile terminal user; a communication control unit, which receives a moving image of the user transmitted from the mobile terminal; and an authentication processing unit, which authenticates the user by checking the moving image received by the communication control unit against the register image stored in the register image storage unit.

Authentication system, mobile terminal, and authentication method

A mobile communication control method is provided. In the method, when a home location register receives additional service execution unsupported information from a switch in a network in a roaming destination in response to transferring subscriber information, it is determined whether location registration of a mobile station is to be performed on the basis of at least one item of information on the additional service and activation information of the additional service that are managed by a service control apparatus, and execution of location registration is controlled on the basis of a result of the determination.

Mobile communication control method and system

A mobile communication service control system according to the present invention has a home location registerstoring subscriber information, a switching unitfor sending a subscriber information inquiry signalto the register, and a service control unitfor controlling a service provided for subscribers. The home location registerstores service informationnecessary for a start of control of the service at the service control unitand sends the service informationalong with a response signalto the subscriber information inquiry signalto the switching unit. The switching unittransfers the service informationreceived from the register, to the service control unit

Mobile communication service control system and mobile communication service control method

A received signal of a control channel of each cell is despread by each spreading code in a correlation detector. The received level of the despread output in a window, including its peak, is measured in a level measuring part and an interference signal level outside the window is also measured. In a control part the difference or ratio between the measured received level and the interference signal level is obtained as a comparison signal for each spreading code, and the comparison signal is compared in terms of magnitude to thereby determine the visited cell of a mobile station.

Mobile station and cell selecting method for code division multiplex

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Yokosuka, Japan

Toyota Nishi