Nec Corporation

Tetsuo Yama

Masashi Hirabe

Akihisa Kurashima

Hideaki Tsuoka

Hiroki Takeda

In order to provide a control apparatus that enhances security of a radio communication system run by a user, the control apparatus including an acquisition section and a registration section, the acquisition section being configured to acquire subscriber information in which at least authentication information is encrypted, and the registration section being configured to register the acquired subscriber information in a database included in a core network. The control apparatus may further include an authentication section configured to decrypt the encrypted authentication information, and use the decrypted authentication information and authentication information included in a connection request from a terminal apparatus to the core network to authenticate the terminal apparatus.

Control apparatus, radio communication system, control method, and recording medium having recorded program

A control apparatus that implements access control of a user in a private radio communication network is provided. The control apparatus includes an obtaining unit and a verifying unit. The obtaining unit obtains subscriber information related to a subscriber in a private radio communication network. The verifying unit performs authentication processing for a terminal apparatus requesting connection to the private radio communication network, based on authentication information included in the subscriber information. The verifying unit verifies access authority for the terminal apparatus requesting the connection, based on information different from the authentication information included in the subscriber information when the authentication processing for the terminal apparatus requesting the connection is successful.

Control apparatus, radio communication system, control method, and program

An antenna device according to the present disclosure includes a first antenna that is oriented in a first direction and transmits and receives a signal with a first polarization, a second antenna that is oriented in a second direction opposite to the first direction, a third antenna that is oriented in a third direction obtained by horizontally rotating the second direction by 90° or 180° and transmits and receives a signal with a second polarization orthogonal to the first polarization, a fourth antenna that is oriented in a fourth direction opposite to the third direction and transmits and receives a signal with the second polarization. The second antenna is provided with a feeding point placed in phase with a feeding point of the first antenna. The fourth antenna is provided with a feeding point placed in opposite phase to a feeding point of the third antenna.

Antenna device and communication method

An antenna device according to the present disclosure includes a first antenna that is oriented in a first direction and transmits and receives a signal with a first polarization, a second antenna that is oriented in a second direction opposite to the first direction and transmits and receives a signal with the first polarization, a third antenna that is oriented in a third direction and transmits and receives a signal with a second polarization, a fourth antenna that is oriented in a fourth direction opposite to the third direction and transmits and receives a signal with the second polarization. The second antenna is provided with a feeding point placed in phase with a feeding point of the first antenna. The fourth antenna is provided with a feeding point placed in opposite phase to a feeding point of the third antenna.

Growing community of inventors

Tokyo, Japan

Tetsuo Yama