Mitsubishi Electric Corporation

Honda Giken Kogyo Kabushiki Kaisha

Mitsubishi Denki Kabushiki Kaisha

Jfe Steel Corporation

National Institute of Information and Communications Technology, Incorporated

Tcl Communication Technology Holdings Limited

Toyo Drilube Co., Ltd.

Fujitsu Corporation

Sumco Corporation

Akira Okubo

Mitsuru Mochizuki

Miho Maeda

Noriyuki Fukui

Yasushi Iwane

Shigenori Tani

Michiaki Takano

Tetsuya Mishuku

Ryoichi Fujie

Keisuke Ozaki

Junji Otani

Nicolas Voyer

Yasuhide Ishiguro

Takamasa Kawai

Seishi Miura

Masahiro Kuroda

Seigo Goto

Hideo Sato

Seiji Ozaki

Koichi Shoda

Ryota Kobayashi

Takashi Koga

Ryota Kubo

Kota Toyosawa

Sachiko Fujimoto

Katsumi Kobayashi

Hiroshi Matsuyama

Kanau Iwashita

Hideyuki Kondo

Hiroaki Kawasumi

Eric Lavillonniere

Sophie Pautonnier-Perrot

Shigemasa Matsubara

Hiroaki Tamai

Yasuaki Kamimura

Naoto Miyauchi

Mitsuaki Yasuoka

Kazuya Takeuchi

Takafumi Kawakami

Kouichi Ishibashi

Takashi Kushibiki

An agent for forming a solid lubricating coating film on a tightening surface of a thread portion, in which a solid lubricant is dispersed in a binder resin as a matrix component, a main component of the solid lubricant is melamine cyanurate, and an average particle diameter of the melamine cyanurate is 0.1 μm or more and 10.0 μm or less, the binder resin contains an alkyd resin and nitrocellulose, and the alkyd resin and nitrocellulose are contained in an amount of 85 wt % or more of the total binder resin component weight, and a total weight of the solid lubricant is 10 parts by weight or more and 100 parts by weight or less based on 100 parts by weight of a total weight of the binder resin.

Agent, oil country tubular goods, and threaded joint for oil country tubular goods

A solid lubricating coating film capable of imparting favorable lubricity and corrosion resistance to a connection for oil country tubular goods. Two or more solid lubricants are dispersed in a binder resin. Graphite is contained in an amount of 50% or more and 90% or less of a total weight of the solid lubricants, and the graphite has a scaly shape and an average particle diameter of 10.0 μm or less. A solid lubricant made of one or more materials selected from BN, mica, talc, MCA, MoS, PTFE, PFA, and FEP is further contained as other solid lubricants of the two or more types of solid lubricants. The binder resin contains a PEEK resin having an average particle diameter of 20 μm or less as a main component, and the PEEK resin is contained in an amount of 70% or more of a total weight of the binder resin.

Agent for forming solid lubricating coating film, oil country tubular goods, threaded joint for oil country tubular goods, and method for manufacturing oil country tubular goods

Since OFDM (Orthogonal Frequency Division Multiplexing), which is a downlink access scheme used for an LTE (Long Term Evolution) communication system, is weak at interference, it is preferable that the number of base stations for transmitting the same E-MBMS (Evolved Multimedia Broadcast Multicast Service) data base not excessive. Thus, the mobile terminal performs: processing of obtaining measurement quality values by measuring reception quality of each base station; processing of deciding on whether the measurement quality value of a serving base station exceeds a certain receiving level; processing of adding measurement quality values of other base stations to the measurement quality value of the serving base station until the sum exceeds the certain receiving level; and processing of notifying the serving base station of the serving base station and other base stations as candidates for an active set for E-MBMS. This makes it possible to select as the active set for E-MBMS an appropriate number of base stations that make it compatible to maintain good reception quality and to prevent interference.

Data communication method and mobile communication system

The present invention increases accommodation efficiency in a wireless master station for wireless slave stations, and efficiently uses wireless resources while controlling traffic. In a communication system in which a plurality of wireless slave stations---, . . . , perform wireless communication with wireless master stations-and-directly or through another wireless slave station and which performs communication from the wireless master stations with a collection control deviceby means of wired communication or the like. The collection control devicestores first through fourth threshold values a, b, c, and d in memory, and makes efficient use while suppressing traffic by performing a 'connection suppression notification', a 'specific high-frequency communication stop notification', and an &#x201c;accommodation refusal notification&#x201d;, and performs functionality control through stages according to the number of accommodated wireless slave stations.

Communication system, congestion avoidance method thereof, and meter reading system using communication system

Since OFDM (Orthogonal Frequency Division Multiplexing), which is a downlink access scheme used for an LTE (Long Term Evolution) communication system, is weak at interference, it is preferable that the number of base stations for transmitting the same E-MBMS (Evolved Multimedia Broadcast Multicast Service) data be not excessive. Thus, the mobile terminal performs: processing of obtaining measurement quality values by measuring reception quality of each base station; processing of deciding on whether the measurement quality value of a serving base station exceeds a certain receiving level; processing of adding measurement quality values of other base stations to the measurement quality value of the serving base station until the sum exceeds the certain receiving level; and processing of notifying the serving base station of the serving base station and other base stations as candidates for an active set for E-MBMS. This makes it possible to select as the active set for E-MBMS an appropriate number of base stations that make it compatible to maintain good reception quality and to prevent interference.

In a communications system including a base station capable of altering a frequency bandwidth which is used for transmitting broadcast data for providing point-to-multipoint broadcasting communications service and which is used for transmitting individual communications data for providing point-to-point individual communications service, and a mobile terminal capable of altering a receivable bandwidth which is used for receiving at least the broadcast data and the individual communications data transmitted from the base station, decision processing of making a decision as to whether the mobile terminal can receive reception-desired content it desires to receive among contents provided by the broadcasting communications service is executed in accordance with a frequency occupying bandwidth used for transmitting the reception-desired content. Thus, the mobile terminal becomes able to make a decision as to whether it can receive particular E-MBMS content considering its own UE position.

Data communications method and mobile communications system

The present invention concerns a method for determining in a wireless cellular telecommunication network which device among a first device managing data associated to mobile terminals located in a first pool of cells and a second device managing data associated to mobile terminals located in a second pool of cells has to manage data associated to a mobile terminal. The first and second pools of cells have common cells and the mobile terminal is located in the first pool of cells. The first device managing data associated to the mobile terminal:

Method and apparatus for determining, in a wireless cellular telecommunication network, which device among a first and second devices has to manage data associated to a mobile terminal

The present invention concerns a method for determining a location area of a mobile terminal in a wireless cellular telecommunication network, the mobile terminal being located in a first wireless area of the wireless cellular telecommunication network. The method comprises the steps, executed by a telecommunication device of the wireless cellular telecommunication network, of:

Methods and devices for determining a location area of a wireless cellular telecommunication network

When an apparatus located at an edge of a network transmits a report message in a multicast procedure transmitted from a mobile terminal to a gateway switch, the apparatus snoops the report message and transmits an entry update request frame for causing an entry forming a transfer route for multicast to be learned in a direction of the gateway switch. The gateway switch transfers the received report message to a port to which an IP multicast router is connected after the transfer router for multicast is formed.

Layer 2 mobility network

An identification-information extracting unit extracts first identification information of a location registration area of a wireless communication system. A storage unit stores correspondence information concerning a relationship between the first identification information and second identification information of a location registration area managed by a communication network system. A location-registration requesting unit transmits location-registration request information for requesting a location registering device to perform a new location registration when the second identification information is updated by a movement of a mobile terminal.

Communication network system and mobile terminal

An inspection method is provided for accurate measurement of conductive materials as defects within a silicon oxide film base material embedded in a SOI wafer sample. In the method, the internal state of a sampleis inspected by measuring an conductive material within an insulating base materialformed upon the sample. Ions or electrons are irradiated upon the surface of the inspection region of the base material. A surface image is imaged with secondary electrons emitted from the surfaceand the vicinity of the surface. The inspection region is etched and a surface image is imaged successively with secondary electrons emitted from a surfaceand from its vicinity, renewed successively at the etched depth. The conductive material within the base materialis measured based upon the accumulated surface images.

Inspection method, manufacturing method of piece for analysis, analysis method, analyzer, manufacturing method of SOI wafer, and SOI wafer

When receiving a packet sent thereto from a mobile terminal that is a sending source, a subscriber packet exchange apparatus encapsulates the packet with a multicast address without acquiring information on a routing area in which another mobile terminal that is a destination is currently located from a home location register, and routes the packet to another subscriber packet exchange apparatus that manages the routing area in which the destination mobile terminal is currently located. As a result, the moving object IP packet communication system can carry out the transmission of data packets between the source and destination mobile terminals while reducing the transfer delay.

Mobile IP packet communication system

When a control message for indicating transfer of a new call is exchanged between a serving radio control server and a serving radio bearer server, time information held by the serving radio control server and time information held by the serving radio bearer server are set in the control message, and a node synchronization processing for node synchronization between the serving radio control server and the serving radio bearer server is executed based on a difference.

Inter-node synchronization method in radio network system, radio control server, and radio bearer server

It is aimed to obtain a radio network system in which load sharing among a plurality of Radio Bearer Servers which performs data transfer control between a user plane (Bearer Plane) and a mobile terminal can be efficiently performed. In the radio network system, the plurality of Radio Bearer Servers always notifies a plurality of Radio Control Servers of a resource (channel) using state, and a Radio Control Server () which controls receiving a new call assigns the new call to a Radio Bearer Server () whose resource (channel) has the largest empty space, by judging a using state of each Radio Bearer Server based on the resource (channel) using states.

Radio network system and radio communication control method

Growing community of inventors

Tokyo, Japan

Akira Okubo