Nippon Telegraph and Telephone Corporation

Takahito Kirihara

Satoshi Ikeda

Satoshi Narikawa

Tatsuya Fukui

Takashi Watanabe

Katsuya Minami

Shunsuke Saruwatari

Kazuhiko Kinoshita

A communication method performed by a communication system including an authentication device and a subscriber line system includes: determining by the authentication device, in response to a request for communicative connection from a user terminal that establishes a communicative connection via the subscriber line system, whether the user terminal is allowed to establish the communicative connection; and controlling, by the subscriber line system, the communicative connection established by the user terminal, by dynamically allocating a bandwidth in accordance with a request from the user terminal based on a result of the determining.

Communication method, communication system, authentication apparatus and user terminal device

The present disclosure aims to make it possible to simultaneously establish communication between many freely-selected radio terminals without using a complex relay network or a plurality of radio relays. The present disclosure is a communication network system including: a plurality of optical-radio converters-to-that convert a radio signal and an optical fiber radio signal into each other; and a path controller that is connected to the plurality of optical-radio converters-to-through optical fiber transmission lines-to-, receives input of an optical fiber radio signal transmitted from any optical-radio converter of the plurality of optical-radio converters-to-from the optical fiber transmission line connected to the optical-radio converter, and outputs the optical fiber radio signal to the optical fiber transmission line connected to a set optical-radio converter of the plurality of optical-radio converters-to-

Communication network system

Growing community of inventors

Musashino, Japan

Takahito Kirihara