Abstract: This management server avoids inter-cell interference on mobile terminals even if a relay node (RN) accommodating the mobile terminals has moved. The management server determines the almost blank subframe (ABS) pattern and the application period of the ABS pattern of a macrocell to which an RN is to move to next on the basis of RN location information, speed information and direction of movement transmitted from the RN, and macrocell information that is to be retained, and transmits said information to the RN. On the basis of the information transmitted from the management server, the RN performs scheduling for user equipment (UE) that is undergoing interference.

Abstract: Provided is compact base station device that reduces the processing load with an upper layer network device by reducing the amount of signaling with an upper layer network device. In the device, a CSG member management device (102) stores CSG member information beforehand. A network message generation unit (107) generates a message used for collectively registering the CSG member terminals stored in the CSG member management unit (102), in an upper layer network device. At startup, a network interface unit (108) transmits a message generated by the network message generation unit (107) to the upper layer network device. In response to the message transmitted by the network interface unit (108), a network message analysis unit (106) acquires from the upper layer network device parameter information for connecting to the CSG member terminals.

Abstract: The utilization of single crystal diamond in a nano- or micro-machine (N/MEMS) device is difficult, and there has been no report on such utilization. The reason for this resides in that it is difficult to grow single crystal diamond on an oxide which is a sacrifice layer. In a conventional technique, a cantilever or the like is produced by forming polycrystalline diamond or nanodiamond on an oxide as a sacrifice layer, but the mechanical performance, vibration characteristics, stability, and reproducibility of the produced cantilever or the like are unsatisfactory. In the present invention, utilizing the fact that the high concentration ion-implanted region in a diamond substrate 101 is modified into graphite, the layer 104 modified into graphite as a sacrifice layer is removed by electrochemical etching to obtain the diamond layer remaining on the resultant substrate as a movable structure. The produced cantilever 106 exhibited high frequency resonance.

Abstract: Provided are a wireless communication system and a base station device. An entrance cell base station (100) acquires a UE identifier from a UE that has accessed an entrance cell, whereupon a management server (200) manages the acquired UE identifier together with a period of validity if the UE identifier that has been acquired from the entrance cell base station (100) has been newly added, and if the acquired UE identifier is already being managed, deletes the managed identifier, and reports the modified content to a limit cell group base station (300). When the UE accesses the limit cell group, the limit cell group base station (300) acquires the UE identifier from the UE in order to either allow or deny access to the limit cell group in accordance with whether or not there is a match with a valid UE identifier reported from the management server (200).

Abstract: Provided are a server apparatus and an interference control method, wherein interference between cells is inhibited, and a drop in throughput of the entire network is also inhibited. An ABS configuration determining unit (203) of an OMC (200) is provided with an ABS configuration table that is defined such that the frequency with which downstream transmission is stopped is decreased as the number of HeNBs decreases, and the frequency with which downstream transmission is stopped is increased as the number of HeNBs increases. The ABS configuration determining unit (203) obtains the number of HeNBs within an MeNB area, obtains an ABS configuration corresponding to the obtained number of HeNBs from the ABS configuration table, and determines to apply the configuration to the MeNB.

Abstract: The present invention provides a base station device capable of improving the throughput of a whole network by minimizing interference between respective base stations. In a communication system including a plurality of base stations, which transmit a signal by using any of a plurality of different ABS patterns which are sub frame ABS patterns represented by the combination of a transmission sub frame for transmitting a signal and a non-transmission sub frame for suspending the transmission of the signal, a determining unit (104), on the basis of the presence or absence of the interference between an HeNB (100) and other base stations except for the HeNB (100), determines the ABS pattern used by the HeNB (100) from among the plurality of ABS patterns, and a transmitting unit (105) transmits a signal to a terminal connected to the HeNB (100); in accordance with the determined ABS pattern.

Abstract: A monitoring device (200) manages the installation position of a moveable small-sized base station (100), A message analysis unit (202) acquires, from the small-sized base station (100) being managed, peripheral cell information which shows small-sized base stations present in the periphery of the small-sized base station (100) being managed. A database management unit (204) divides map information into a plurality of areas, and stores database information which has established whether or not each of the small-sized base stations (100) can he installed in each area service continuation determination unit (205) permits the installation of the small-sized base station (100) being managed, if the installation position for the small-sized base station (100) being managed, as determined from the acquired peripheral cell information, is an area wherein the installation of the small-sized base station (100) being managed is permitted, as established in the database information.

Abstract: A small-sized base station for which the installation location can be restricted to an appropriate range and can be appropriately managed. A small-sized base station (100) is moveable. A utilities subscriber ID acquisition unit (102) acquires, from the outside, the subscriber ID of utilities in the installation location of the small-sized base station (100). A message generation unit (103) generates a request message containing the subscriber ID, inputted from the utilities subscriber ID acquisition unit (102), and identification information identifying the small-sized base station (100), then sends the generated request message to a monitoring device (200), and requests permission for the installation of the small-sized base station (100) in the installation location. A service management function unit (106) initiates service if the monitoring unit (200) has permitted installation, in response to the sent request message.

Abstract: Provided is compact base station device that reduces the processing load with an upper layer network device by reducing the amount of signaling with an upper layer network device. In the device, a CSG member management device (102) stores CSG member information beforehand. A network message generation unit (107) generates a message used for collectively registering the CSG member terminals stored in the CSG member management unit (102), in an upper layer network device. At startup, a network interface unit (108) transmits a message generated by the network message generation unit (107) to the upper layer network device. In response to the message transmitted by the network interface unit (108), a network message analysis unit (106) acquires from the upper layer network device parameter information for connecting to the CSG member terminals.

Abstract: A method of manufacturing a diamond UV sensor element improved with a UV/visible light blind ratio using a diamond single crystal as a light receiving portion and detecting a light based on the change of electric resistance caused by a light irradiated to the light receiving portion is provided, the method, including (1) a step of hydrogenating the surface of the diamond single crystal in an atmosphere substantially containing hydrogen, and (2) a step of forming a light receiving portion by exposing the hydrogenated surface of the diamond single crystal into an atmosphere containing ozone or active oxygen.

Abstract: The utilization of single crystal diamond in a nano- or micro-machine (N/MEMS) device is difficult, and there has been no report on such utilization. The reason for this resides in that it is difficult to grow single crystal diamond on an oxide which is a sacrifice layer. In a conventional technique, a cantilever or the like is produced by forming polycrystalline diamond or nanodiamond on an oxide as a sacrifice layer, but the mechanical performance, vibration characteristics, stability, and reproducibility of the produced cantilever or the like are unsatisfactory. In the present invention, utilizing the fact that the high concentration ion-implanted region in a diamond substrate 101 is modified into graphite, the layer 104 modified into graphite as a sacrifice layer is removed by electrochemical etching to obtain the diamond layer remaining on the resultant substrate as a movable structure. The produced cantilever 106 exhibited high frequency resonance.

Abstract: The diamond semiconductor device is a diamond semiconductor device where a pair of electrodes are fixed on a diamond substrate, and wherein at least one interface to the electrode on the surface of the diamond substrate has a hydrogen termination and at least the surface of the substrate between the pair of two electrodes is controlled to have a larger electric resistivity value than inside the substrate. Accordingly, a diamond semiconductor device can be realized, capable of attaining the device work stability, especially the device work stability in severe environments such as high temperature with exhibiting the function of the hydrogen termination thereof to the utmost extent.

Abstract: A method of manufacturing a diamond UV sensor element improved with a UV/visible light blind ratio using a diamond single crystal as a light receiving portion and detecting a light based on the change of electric resistance caused by a light irradiated to the light receiving portion is provided, the method, including (1) a step of hydrogenating the surface of the diamond single crystal in an atmosphere substantially containing hydrogen, and (2) a step of forming a light receiving portion by exposing the hydrogenated surface of the diamond single crystal into an atmosphere containing ozone or active oxygen.

Abstract: Au base electrode materials have fatal disadvantages, such as inferior adhesion to diamond, low mechanical strength, and low thermal stability. A diamond UV sensor is provided which includes a photoconductive or Schottky optical sensor element having two-terminal electrodes and detects light irradiating a light-receiving portion according to the changes in electrical resistance or photo-induced current of the material of the light-receiving portion. The sensor element includes diamond having a surface from which a conductive surface layer has been removed, and the surface of the diamond is used as the light-receiving portion and a junction interface with the electrodes. The electrodes include a rectifying and an ohmic electrode. The rectifying electrode is transparent electrode capable of transmitting light and is defined by a single layer made of a nitride of a refractory metal element.

Abstract: An object of the present invention is to obtain greater reduction in resistance between an n-electrode and an n-type layer made of a Group III nitride compound semiconductor. According to the present invention, the n-electrode is formed with a first electrode material made of at least one member selected from the group consisting of vanadium (V), titanium (Ti), zirconium (Zr) and tungsten (W), a second electrode material made of at least one member selected from the group consisting of palladium (Pd), platinum (Pt), gold (Au), silver (Ag) and copper (Cu), and a third electrode material made of at least one member selected from the group consisting of aluminum (Al), silicon (Si) and germanium (Ge).

Abstract: The diamond semiconductor device is a diamond semiconductor device where a pair of electrodes are fixed on a diamond substrate, and wherein at least one interface to the electrode on the surface of the diamond substrate has a hydrogen termination and at least the surface of the substrate between the pair of two electrodes is controlled to have a larger electric resistivity value than inside the substrate. Accordingly, a diamond semiconductor device can be realized, capable of attaining the device work stability, especially the device work stability in severe environments such as high temperature with exhibiting the function of the hydrogen termination thereof to the utmost extent.

Abstract: In a conventional ultraviolet sensing device using a diamond semiconductor in a light-receiving unit, an Au-based electrode material is used for both a rectifier electrode and an ohmic electrode. However, the Au-based electrode material has fatal defects, such as poor adhesion to diamond, low mechanical strength, and furthermore poor thermal stability. While avoiding complication of the device structure and exploiting the characteristics of a photoconductive sensing device, by using a carbide compound (TiC, ZrC, HfC, VC, NbC, TaC, CrC, MoC, and WC) of a high melting metal having a high mechanical strength for a rectifier electrode and/or a ohmic electrode, there is provided an extremely heat-stable diamond ultraviolet sensor having a light-receiving sensitivity to ultraviolet light having a wavelength of 260 nm or less.

Abstract: Au base electrode materials have fatal disadvantages, such as inferior adhesion to diamond, low mechanical strength, and low thermal stability. A diamond UV sensor is provided which includes a photoconductive or Schottky optical sensor element having two-terminal electrodes and detects light irradiating a light-receiving portion according to the changes in electrical resistance or photo-induced current of the material of the light-receiving portion. The sensor element includes diamond having a surface from which a conductive surface layer has been removed, and the surface of the diamond is used as the light-receiving portion and a junction interface with the electrodes. The electrodes include a rectifying and an ohmic electrode. The rectifying electrode is transparent electrode capable of transmitting light and is defined by a single layer made of a nitride of a refractory metal element.

Abstract: A communication device can perform handover in accordance with a traffic type. In a non-real time communication, it is possible to prevent loss of packet data. In a real time communication, a handover can be rapidly performed without causing a delay. In this device, a handover control unit (105) judges whether data type information is data in a real time communication. If the data is in a real time communication, the handover control unit (105) outputs a switching request message for switching the path switch to the local station to an IPAG interface unit (104). An L3 packet buffer management unit (106) temporarily accumulates the data transmitted from the IPAG or data transferred from other network host.

Abstract: A swivel frame structure for a hydraulic excavator, said swing frame structure being to be arranged in a swing upperstructure 21, has a center frame 1 composed of side plates 6,7 and a reinforcement plate 8 joined to each other. The swing frame structure is provided with mating portions for bringing the side plates 6,7 and the reinforcement plate 8 into engagement with each other. These mating portions comprise plug-in structure portions, which in turn comprise holes 6a,7a formed through the respective side plates 6,7 and lugs 8a,8b arranged on opposite side edge portions of the reinforcement plate 8 and to be inserted into the holes 6a,7a of the corresponding side plates 6,7. The center frame can be fabricated without needing any jigs for fixedly holding the side plates and a bottom plate together.