Fujitsu Corporation

Yutaka Hamada

Yuki Shinada

Hiromitsu Kawai

Takahiro Kawaguchi

Masanori Hashimoto

Daisuke Nitta

Atsushi Yamashita

Hiroyuki Sogo

Mitsuru Seta

Tsudoi Kubo

Masahiko Shirota

Yasuo Tanishima

Katsuyuki Masuda

Hitoshi Ishikawa

Masayuki Shinozaki

Rikihiko Mashima

A radio access system includes a controlling apparatus that when the terminal apparatuses to which delivery data is to be delivered are concentrated in a particular area, groups the terminal apparatuses as a terminal apparatus group, selects a representative server terminal apparatus from the terminal apparatuses, creates data map information indicating a delivery rule for delivering the delivery data from the representative server terminal apparatus to another terminal apparatus, adds information for identification of the representative server terminal apparatus to the data map information, transmits the group information and the data map information to the terminal apparatuses, and instructs a delivery data server to deliver the delivery data to the representative server terminal apparatus; and a terminal apparatus that obtains the delivery data by communicating, in accordance with the received data map information, with the another terminal apparatus within the terminal apparatus group included in the received group information.

Radio access system, controlling apparatus, and terminal apparatus

A wireless quality collecting device receives quality information on a wireless area from a terminal device that is located in the wireless area. For each region belonging to a predetermined range, the wireless quality collecting device counts the number of pieces of the received quality information. For a region in which the total number of pieces of the counted quality information is equal to or greater than a predetermined number, from among pieces of the quality information belonging to the region, the wireless quality collecting device selects the predetermined number of pieces of the quality information and stores the selected quality information in a storing unit.

Wireless quality collecting device, wireless quality collecting method, and computer-readable recording medium

A communication control apparatus includes an acquirer that acquires operation information of a moving object having a shielded space therein, and a controller that controls at least one of a channel between a first base station installed in a car in the moving object and a second base station installed on each floor where the car is stoppable, transmission power of the first base station and transmission power of the second base station, and location information for locating a position of a mobile terminal for each floor where the car is stoppable, on the basis of the operation information.

Communication control apparatus and communication control method

A communication system for performing communication between different mobile terminals in different mobile communication systems by allocating different carriers to the mobile communication systems. The communication system includes a shared radio processing apparatus that is shared by the different mobile communication systems and performs radio processing for the different mobile communication systems. The shared radio processing apparatus includes a measuring unit for measuring power of the carriers, a carrier usage determination unit for determining the frequency of carrier usage based on measured values of the carriers, a carrier status determination unit for determining a carrier status indicating whether to allocate one of the carriers to one of the mobile communication systems based on the carrier usage, and a reporting unit for transmitting a carrier status report including the carrier status to the respective mobile communication systems.

Communication system and radio processing apparatus

A communication apparatus includes a detecting part which detects a bandwidth used by a first terminal equipment which performs radio communication, a communication speed measurement part which measures a communication speed of a second terminal equipment, a control part which generates a control signal controlling a communication of the second terminal equipment if a total bandwidth of a bandwidth detected by the detecting part and a bandwidth corresponding to a communication speed of the second terminal equipment measured by the communication speed measurement part is equal to or larger than a certain threshold value, and a restraint part which restrains communication of the second terminal equipment according to the control signal generated by the control part.

Communication apparatus and communication method

A wireless system that can switch the communication mode based on the type of a signal inputted into the system is provided. The wireless system comprises a subscriber terminal that is connected to devices which output audio signals or data signals and switches the signal path between an audio signal path and a data signal path based on the type of a signal inputted from the devices, and a base station that switches the signal path between an audio signal path and a data signal path based on the type of a signal inputted from a general public line network. The subscriber terminal and the base station are wirelessly connected.

Subscriber terminal, base station, circuit mode switching method, and a wireless system utilizing said method

A base transceiver station in a wireless local loop system using a personal handy-phone system constituted by a plurality of cell stations, each accommodating a plurality of subscriber units, a hybrid section integrally handling signals transmitted and received by the plurality of cell stations via a single antenna, and a multiplexing/demultiplexing unit integrally handling the signals transferred between the plurality of cell stations and an existing network, thereby enabling construction of a wireless local loop system which is small in size, can expand the service area without an increase of interference with other base transceiver stations, has a good affinity with existing networks, is provided with ISDN functions, and, at the same time, provides backup against faults and improves the transmission quality and reliability.

Growing community of inventors

Yokosuka, Japan

Yutaka Hamada