Fujitsu Corporation

Kiyomi Hasesaka

Tatsuhiro Ando

Hiroyasu Taguchi

Yayoi Itoh

Tatsuo Yamaguchi

Satoru Abe

Takuji Oyama

Satoshi Maehara

Yoshikazu Takeda

Nobuaki Kitazumi

Hiroyuki Sasai

Takahito Suzuki

Keiichiro Yamakawa

Naoyuki Kakizaki

Kiyoshi Hirouchi

Takahiro Kikuchi

Mitsugi Nomiya

Naohisa Sada

Kazuyoshi Nakajima

Miya Inami

Saiki Kawamura

Hiroki Yokoyama

An apparatus is configured to detect a predetermined physical amount and relay communication between a network and a terminal. The apparatus calculates a communication disabling risk based on the predetermined physical amount, and notifies another apparatus of takeover of a process of relaying the communication between the network and the terminal when the communication disabling risk is equal to or greater than a predetermined threshold.

Apparatus and method for takeover of relaying communication between a network and a terminal

A wireless communication device in a wireless communication network system that includes a plurality of wireless communication devices, the inside of the system being divided into zones each having a predetermined geographic area, includes a processing unit that, upon receiving a disaster warning message including predicted position information on an occurrence source of a disaster and disaster-influencing information indicating an area to be influenced by the disaster, calculates a disaster-stricken zone including the occurrence source based on the predicted position information, and an affected zone to be influenced by the disaster based on the disaster-influencing information, and performs any one of a process to transfer data that the own device has and a process to change a transfer route from the own device to a destination device, according to the relationship between a zone in which the own device is positioned, and the disaster-stricken zone and the affected zone.

Wireless communication device, wireless communication network system, information processing method, and recording medium recording information processing program

A relay apparatus transfers data sent from a user terminal, to an external network, via any one of paths. A notification apparatus receives first disaster information including area information identifying first areas forecast to be affected by an occurrence of a disaster and prediction information storing, in association with each of the first areas, a predicted intensity value indicating a predicted value of an influence degree of the disaster on the each of the first areas. The notification apparatus generates, based on the first disaster information, second disaster information storing the predicted intensity value in association with each of second areas passed through by the paths. The relay apparatus switches the currently-used path to alternative path when it is determined that the predicted intensity value associated with at least one of third areas passed through by the currently-used path is greater than or equal to the predetermined threshold value.

System and method for switching a communication path based on disaster information

A relay device includes a receiver, an information obtaining unit, a parameter storage unit, and a parameter setting unit, and relays a packet which is transmitted from a first network to a second network. The receiver receives the packet from the first network. The information obtaining unit obtains data type information for identifying a type of data which is transmitted and received by the packet. The parameter storage unit stores a control parameter which is used for controlling communication quality in the second network, so as to be associated with a type of transfer data indicating data transferred to the second network. The parameter setting unit sets to the packet the control parameter which is associated with transfer data of a same type as data identified by the data type information, and outputs the packet to which the control parameter is set to the second network.

Relay device

A usage management system includes a first storage and a processor. The first storage stores, for each communication area and for each user, usage restriction information regarding a network device which locates in each communication area and which is used by each user and connectable to a communication network. The processor identifies a location area which is a communication area in which a target network device locates, identifies a target user present in the identified location area, acquires usage restriction information regarding the target network device for the identified target user from the first storage, and controls operations of the target network device in accordance with the acquired usage restriction information.

Usage management system and usage management method

A group communications switching method is disclosed. The method includes the steps of: maintaining a voice call between a first subscriber terminal and a second subscriber terminal when it becomes necessary to perform group communications while the voice call is in progress; starting a group communications call by the first subscriber terminal so as to call at least a group communications member other than the first subscriber terminal and the second subscriber terminal; and disconnecting the voice call between the first subscriber terminal and the second subscriber terminal when the group communications call is established.

Group communications switching method, subscriber terminal and server used for the method

A dynamic traffic control method is disclosed that controls traffic in a radio network system where a radio network controller causes plural radio base stations to change radio outputs. The method comprises a step of measuring a channel utilization rate of each of cells of the radio base stations every predetermined period, a step of predicting whether the rate of a first cell of the cells reaches an implementation level, at which radio output control over the first cell is required, in a next period based on a movement of the rate in the past if the channel utilization rate of the first cell is at a warning level, and a step of reducing the radio output of the first cell and increasing the radio output of a second cell adjacent to the first cell if the rate of the first cell is predicted to reach the implementation level.

Dynamic traffic control method and device for the same

Growing community of inventors

Kawasaki, Japan

Kiyomi Hasesaka