Nec Corporation

Gc Corporation

Nec C Orporation

Daisuke Ohta

Takahiro Nobukiyo

Go Mashio

Tatsuya Fujimoto

Masatoshi Yoshinaga

Naoto Ishii

Hayato Yokohara

Tomohiro Hoshino

Kojiro Hamabe

Hiroshi Yoshida

Tatsuya Yoshimoto

Eiji Takahashi

Takamichi Inoue

Motoki Morita

Toru Osuga

Takeo Onishi

Takahiro Shiroshima

A filtering device is configured to estimate the characteristics of noise superposed on measurement data relating to the status of a controlled machine based on the status information representing the status of a controlled machine, thus adjusting the filtering to eliminate noise based on the estimated noise characteristics.

Filtering device, control system, and filtering method

The present invention provides an excavation system capable of improving the work efficiency at a worksite. An excavation device () excavates an object () treated as an excavation target at an excavation spot. A first detection device () is installed at an excavation spot away from the excavation device (). The first detection device () detects information related to the object () at the excavation spot. A control device () transmits, to the excavation device (), control information related to operations of the excavation device () based on target location data indicating the position of the object (), which corresponds to information related to the object (). The excavation device () executes operations for excavation in accordance with the control information.

Excavation system, work system, control device, control method, and non-transitory computer-readable medium storing a program

Provided is a block body that makes it possible to quickly produce a dental prosthesis with a good accuracy. A material of the block body including SiOin an amount of 60.0 mass % to 80.0 mass %, LiO in an amount of 10.0 mass % to 20.0 mass %, AlOin an amount of 5.1 mass % to 10.0 mass %, wherein the block body is formed in a column, and a main crystalline phase of the block body is lithium disilicate.

Method for producing dental prosthesis, method for producing lithium disilicate blank for dental prosthesis and lithium disilicate blank for dental prosthesis

A base station apparatus is connected to a plurality of transmission/reception points each switching a transmission scheme according to reception environment of wireless terminal and providing service to wireless terminal. The base station apparatus includes a history recording part recording history of beam and transmission scheme selected by wireless terminal with respect to each transmission/reception point; a calculation part calculating a second throughput when service is received using one or more beams being candidates for selection by wireless terminal among beams transmitted by a second transmission/reception point different from a first transmission/reception point connected to wireless terminal; and a transmission/reception point selection part providing service from the second transmission/reception point to wireless terminal by the beam and the transmission scheme corresponding to the second throughput subject to satisfying a predetermined condition with respect to the first throughput being the measured throughput with the first transmission/reception point connected to wireless terminal.

Base station apparatus, service provision method, and program

A communication load estimation system is provided with a load estimation meansfor estimating a communication load of a wireless base station to be an object of estimation, using at least: a network parameter which is a parameter concerning the number of antennas used for signal transmission of the wireless base station; a first quality measurement value which is a measurement value concerning a quality of communication with the wireless base station and which includes at least total reception power; and a second quality measurement value which is a measurement value concerning a quality of communication with the wireless base station and which includes at least a signal to interference noise ratio of a reference signal.

Communication load estimation system, information processing device, method, and program

Provided is a radio base station, etc. that realize transmission control in view of QoE. According to a first aspect of the present invention, there is provided a radio base station that receives a packet(s) transmitted from a packet transmission apparatus via a network and transmits the received packet(s) to a wireless terminal(s), the radio base station including: acquisition means that acquires a packet type(s) or a packet identifier(s) set in the packet(s) by the packet transmission apparatus; and control means that performs transmission control to change a transmission order of the packet(s) based on the packet type(s) or the packet identifier(s).

Radio base station, packet transmission apparatus, wireless terminal, control method, and program

Provided is a method for quickly producing a dental prosthesis with a good accuracy. The method for producing a dental prosthesis including: a melting step of melting a material including no less than 60.0 mass % and no more than 80.0 mass % of SiO, no less than 10.0 mass % and no more than 20.0 mass % of LiO, and no less than 5.1 mass % and no more than 10.0 mass % of AlO; a glass blank production step of cooling to solidify the molten material to obtain a glass blank; a lithium disilicate blank production step of heating the glass blank to obtain a lithium disilicate blank whose main crystalline phase is lithium disilicate; and a processing step of processing the lithium disilicate by machining.

An object is to provide a method for manufacturing a dental prosthesis consisting of a plurality of layers with high productivity. The method for manufacturing a dental prosthesis comprises: filling a cavity () formed in a mold which has a shape of the dental prosthesis with a layered material body () that is made by layering materials () corresponding to the plurality of layers; and after this filling, rotating the mold on a material inlet () of the mold and cutting the materials.

Method for manufacturing dental prosthesis

The application provides a CA scheduling scheme, a base station, a radio communication system and a program to allocate radio resources based on allocation indexes calculated using the bandwidths of component carriers and traffic loads. A frequency block allocation method is for a radio communication system in which a radio station and mobile stations perform radio communication using a frequency block selected from a plurality of system bands. The method comprises an allocation number determination step of determining number of system bands that can allocate to each mobile station; a communication band index calculation step of calculating a communication band index based on bandwidths and loads of the system bands according to the determined allocation number; an allocation index calculation step of calculating an allocation index of the mobile station for each of the system bands using the communication band index and a frequency block allocation step of allocating frequency blocks to the mobile station based on the allocation indices.

Allocation method, radio communication system, allocation apparatus, and program thereof

A radio resource setting method according to the present invention is a method for, when there are a first communication area managed by a pico base station () and a second communication area including at least part of the first communication area and managed by a macro base station (), setting radio resources that the pico base station () and macro base station () can use for wireless communication with a terminal (), the radio resource setting method comprising: calculating determination conditions for determining whether or not to set radio resources whose use is limited in the second communication area; calculating a ratio of the radio resources whose use is limited in the second communication area; and setting the radio resources whose use is limited in the second communication area using the determination conditions and the ratio of the radio resources whose use is limited.

Radio resource setting method, base station, radio resource setting system, and non-transitory computer readable medium

The method is a method of setting radio resources which a pico base station () and a macro base station () can use for wireless communication with a terminal, and includes obtaining loads the pico base station () and the macro base station (), calculating a first delay index of the pico base station using the load of the pico base station (), calculating using the load of the macro base station () a second delay index of the macro base station () in case where the macro base station () has set radio resources whose use is limited, and calculating a ratio of the radio resources whose use is limited by the macro base station () based on the first and second delay indices, and setting the radio resources whose use is limited in the second communication area using the ratio of the radio resources whose use is limited.

A device acquires load information representing a load of radio communication performed between a base station and a plurality of communication terminals performing radio communication with the base station by using a radio resource allocated by the base station. The device sets in response to the acquired load information, from a first radio resource range and a second radio resource range, a radio resource range that the base station can allocate to an edge communication terminal whose channel quality is less than a predetermined threshold.

Radio resource range setting device, radio resource range setting method, and recording medium

A wireless base station () calculates a first transmission rate when performing transmission to a wireless terminal with communication path quality by a first transmission power in a first candidate band selected as a candidate from first wireless bands including a neighboring priority band, calculates a second transmission rate when performing transmission to the wireless terminal () with the communication path quality by a second transmission power in a second candidate band selected as a candidate from second wireless bands that do not include the neighboring priority band, and sets, out of a first wireless resource including the first transmission power and the first candidate band and a second wireless resource including the second transmission power and the second candidate band, a wireless resource for a higher transmission rate obtained by the calculation as a wireless resource allocatable to the wireless terminal (). It is therefore possible to maximize the throughput of the wireless terminal existing in the local station communication area while implementing suppression of interference to the neighboring cell.

Wireless resource setting method, wireless communication system, wireless base station, and program

For a communication terminal performing radio communication, a base station acquires communication path quality information representing a communication path quality, which is the quality of a communication path with the communication terminal. The base station allocates power larger than reference transmission power as transmission power to an edge terminal configuring at least part of an edge terminal group configured by an edge terminal that is a communication terminal whose communication path quality is lower than a threshold quality, allocates the reference transmission power as the transmission power to an edge terminal configuring a remaining part of the edge terminal group.

Growing community of inventors

Tokyo, Japan

Daisuke Ohta