Hitachi, Ltd.

Ryouichi Tanaka

Koji Wakayama

Tsuyoshi Kajita

Takashi Yano

Masaki Hirayama

Satoshi Tamaki

Tsuyoshi Tamaki

Masafumi Kinoshita

Hirofumi Inomata

Tomonori Yamamoto

Hiroaki Konoura

Yusuke Shomura

Seiya Kudo

Provided is an information linkage system, comprising: a processor; and a storage device coupled to the processor, the storage device holds identification information of a user and information on the user, which are added by a first organization, in association with each other, the processor: transmits to a second organization an information linkage application regarding information on any one item included in the information on the user; acquires, when the information linkage application is received, identification information of the user and information on the user of the item specified by the information linkage application, which are added by the second organization; and stores the acquired information in the storage device in association with the identification information of the user and the information on the user regarding the same user as a user identified by the acquired identification information, which are added by the first organization.

Information linkage system and information linkage method

A communication system includes a mobile terminal, a base station, a first gateway device, a second gateway device, a flow measurement server, a quality management server, and an operational terminal. A predetermined flow is extracted by a quality management server, and the extracted flow is summarized for each communication path. A distribution of the communication quality of the flow for each communication path is displayed on a display unit of the operational terminal.

Communication system

In femtocell operation, when a wireless communication terminal whose ID is not registered (ID unregistered terminal) has entered a femtocell's area, the disclosed invention prevents interference between the femtocell and the ID unregistered terminal and interference between the ID unregistered terminal and an ID registered radio communication terminal and prevents a decrease in the throughput of the femtocell and these terminals. In a radio coverage area formed by a radio base station, if a drop of received power from a radio communication terminal occurs and the frequency of reporting the ID of the base station now communicating with the terminal has become less than a given value, it is decided that the terminal is located indoors. For the terminal, if its handover to a femtocell was found to be rejected by MME, the terminal is temporarily permitted to be handed over to a femtocell.

Handover management apparatus, base station, and handover management method

To provide a positioning system, a positioning method, and a positioning server, which are capable of improving accuracy in detection of a position. In a positioning system, three or more access points connected to a terminal station by wireless communication are connected to a positioning server through a network, the access points transmit, to the positioning server, information regarding times of having received a signal transmitted from any one of the access points or the terminal station, and the positioning server measures a position of the terminal station based on the information regarding the times, the information having been received from the access points. In the positioning system, the access points select a communication method for maximizing a strength of the signal received from the terminal station and receive the signal from the terminal station, and the positioning server measures the position of the terminal station based on the information regarding the times, the information having been received from the access points.

Positioning system, positioning method, and positioning server

Growing community of inventors

Tokyo, Japan

Ryouichi Tanaka