Fujitsu Corporation

Nippon Telegraph and Telephone Corporation

Nippon Kogaku K.k.

Koji Ogawa

Yoshihiko Kudo

Kiyotaka Otsuji

Sakuichi Ohtsuka

Hitoshi Koike

Yasunori Otsuka

Tohru Nakahara

Fumiyasu Kurokochi

Kaori Fujimura

Yuichi Fujino

Hitomi Sato

Harumi Kawashima

Yoshihiko Ohtsuki

Hideo Maeda

Naoto Kihara

Xiangyu Wang

A wireless communications device configured to perform wireless resource management at a base station that performs wireless communication with a plurality of terminals by a predetermined beam, includes a memory storing therein a plurality of beam tables set with the terminals accommodated by a plurality of beams, and a processor connected to the memory and configured to manage the beam tables. The processor, during system operation, determines a movable terminal that, of the terminals, is movable between the beam tables and determines another beam table that, of the beam tables, is capable of accommodating the movable terminal. The processor moves the moveable terminal to the other beam table and adjusts a number of the terminals accommodated by each of the beam tables.

Wireless communications device, wireless communications system, radio beam allocation method, and recording medium

A mobile communication system of an overlay configuration includes small cells that are arranged in a macro cell, in which a base station of each small cell executes shifting to a standby state in which transmission power is turned off when a mobile terminal is not in the small cell, and measuring a quality of radio waves received from the mobile terminal that is present in the macro cell, and reporting a measurement result to a base station control device, and the base station control device executes selecting one of the small cells in which the mobile terminal is to be contained, based on the measurement results reported from the base stations of the small cells, and instructing the base station of the selected small cell to shift to a communication state in which the transmission power is turned on.

Mobile communication system, power control method, and base station device of small cell

A network element serves as a first network element, monitors communication with a monitor apparatus to monitor the state of the monitor apparatus, and controls the setting of monitor connection with one or more second network elements which are communicably connected to the first network element and the setting of monitor connection between the second network elements and the monitor apparatus, according to the monitor result.

Network element in network management system, network management system, and network management method

There is provided a mobile communication system, a base station, and a method of controlling cell coverage that is capable of operating a mobile communication system such that the cell coverage is maintained approximately and timely at a target level without requiring much labor. In this mobile communication system, a mobile station reports to the base station the position information of the mobile station and the value of reception power of reference signal from the base station. The base station obtains the measured cell coverage as a result of measurement of cell coverage based on the position information and the value of reception power from the mobile stations, and controls at least one of plural parameters including transmission power to the mobile stations, tilt angle of antenna, etc., so as to minimize deviation of the measured cell coverage from the target cell coverage.

Mobile communication system, base station, cell coverage control method

A radio base station includes a first obtaining device to obtain position information for locating a position of a local station; a second obtaining device to obtain a matrix that includes blocks, each block representing an area with which a uniquely identifiable cell identifier is associated, and that covers a cell coverage of the local station and a cell coverage in which use of the same cell identifiers as those of the local station is to be avoided; and a specifying device to specify the cell identifiers associated with the blocks included in the cell coverage of the local station, on a basis of the local station position located by the position information and the matrix.

Radio base station and cell-identifier specifying method

A tomographic image reading method for extracting a comparison image corresponding to a diagnostic image, the diagnostic image being one of first tomographic images, the comparison image being one of second tomographic images, the method including the steps of: inputting the first images and the second images; generating a first projection image from the first images and a second projection image from the second images; measuring shift amount between the first projection image and the second projection image by using a template; correcting the slice position according to the shift amount; and displaying the diagnostic image and the comparison image to a monitor.

Tomographic image reading method, automatic alignment method, apparatus and computer readable medium

A device for holding a sheet-like sample includes table means including a reference surface capable of intimately contacting the surface of the sample and a groove formed in the reference surface and capable of being covered by the surface of the sample during the intimate contact, the groove being formed in the shape of a continuous spiral having its center substantially at the center of the reference surface, and exhaust means for exhausting the air in the groove covered by the surface of the sample.

Growing community of inventors

Yokohama, Japan

Koji Ogawa