Abstract: In one embodiment, a radio terminal (2) is used in a radio communication system (100) and communicates with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100). This embodiment therefore contributes to simplification of a measurement function which should be supported by the radio terminal when the radio communication system uses a shared frequency (e.g., TVWS) shared by the plurality of radio systems.

Abstract: A transmitting terminal (1A) transmits first D2D control information (522, 523) in one or more subframes within a first subframe pool (511) within a first D2D control period (501) and performs data transmission (531-534) in accordance with the first D2D control information (522, 523) in one or more subframes within a second subframe pool (512) within the first D2D control period (501). The first D2D control information (522, 523) contains a second information element indicating whether the first D2D control information (522, 523) is valid in at least one D2D control period (502, 503) occurring after the first D2D control period (501). This makes it possible to contribute, for example, to reducing failure in reception of scheduling assignment information that is transmitted in a radio resource region for control in a periodic D2D control period and that specifies D2D transmission resources.

Abstract: A method and a radio parameter control system, as well as a network operation management apparatus and a radio station, are provided that enable optimization control for problems varying with sites of occurrence. Using location information at the time of measurement included in a measurement report from a radio terminal (30) located in a radio cell (C10), quality indicators based on measurement information acquired by the radio terminals or the radio station are compiled in association with areas (Ai), each of which is smaller than the radio cell (C10), and control of a radio parameter is performed in the radio cell or across a plurality of radio cells, based on a result of compilation of the quality indicators for each area.

Abstract: A radio terminal (2) is used in a radio communication system (100) and communicates with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100).

Abstract: A method and a device for estimating a communication load, as well as a radio station and an upper-level apparatus in a radio communication system, are provided that can estimate a communication load in a target network with high accuracy by using received quality information. A communication load estimation function (1) for estimating a communication load in a network (NW) estimates the communication load in the network by using at least a first quality indicator (Q1), which is a quality measurement value including entire received power, and a second quality indicator (Q2), which is a quality measurement value including the signal-to-noise-and-interference ratio of a reference signal.

Abstract: A handover failure detection device (121) detects at least one of handover failure types regarding outgoing handover from a first cell (131) managed by a first base station (111) by observing: (a) presence/absence of reception by the first base station (111) of an acknowledgment response to a handover command regarding first handover of a mobile terminal (101) from the first cell (131) to a second cell (132) managed by a second base station (112); and (b) presence/absence of a request for connection re-establishment from the mobile terminal (101) to the first cell (131), the request occurring after initiation of the first handover. As a result, it contributes to improvement of handover failure detection or reduction of handover failure in a situation where exchange of information between base stations is restricted.

Abstract: A base station (2) is configured to schedule radio resources to device-to-device (D2D) transmissions (101A, 101B and 101C) performed by D2D communication pairs (3A, 3B and 3C) in accordance with an allocation rule that permits two D2D communication pairs (3A and 3C) that are not in proximity to each other to share an identical radio resource but prohibits two D2D communication pairs (3A and 3B) in proximity to each other from sharing an identical radio resource. Each D2D transmission (101) includes wirelessly transmitting from one radio terminal (1) directly to the other radio terminal (1) in each D2D communication pair (3) without passing through the base station (2). It is, thus, possible to enable efficient spatial reuse of radio resources in D2D transmissions performed by D2D communication pairs.

Abstract: A liquid ejecting head, including a flow-path unit that includes: first and second nozzle groups disposed alongside each other in a second direction orthogonal to a first direction in which nozzles are arranged; first and second common liquid chambers respectively communicating with the first and second nozzle groups, the first and second common liquid chambers being disposed alongside each other in the second direction; a liquid supply opening communicating with the first common liquid chamber and a liquid discharge opening communicating with the second common liquid chamber, on one side of the flow-path unit in the first direction; and a connecting path connecting the first and second common liquid chambers on the other side of the flow-path unit in the first direction, wherein the first common liquid chamber is disposed nearer to an outer periphery of the flow-path unit in the second direction than the second common liquid chamber.

Abstract: A method and an apparatus for controlling a radio parameter, as well as a network operation management apparatus and a radio base station, are provided that enable optimization control taking a dead zone into consideration. A radio parameter control apparatus (10) for controlling a radio parameter of a radio base station (20) includes a measured data analysis section (101) that analyzes data measured by a plurality of radio terminals including a radio terminal in idle state to detect a dead zone in a radio cell, and a radio parameter control section (102) that controls the radio parameter of the radio base station based on information regarding the dead zone.

Abstract: An ink-jet printer, including: an ink-jet head; and a head moving device for moving the head in a scanning direction, wherein the ink-jet head includes a first head unit having a first nozzle row from which first ink is ejected and a second nozzle row from which second ink that differs in color from the first ink is ejected, a second head unit disposed so as to be shifted from the first head unit in a nozzle arrangement direction by a distance less than a nozzle pitch, and a third head unit disposed between the first and second head units in the scanning direction so as to be shifted from the first head unit in the nozzle arrangement direction by a distance corresponding to a predetermined natural number multiple of the nozzle pitch, the third head unit having fifth and sixth nozzle rows from which the first ink is ejected.

Abstract: A radio terminal (1) is configured to, in response to receiving a request from a network (100) when the radio terminal (1) can connect to the network (100), perform sidelink communication (102) with a second radio terminal (2), which is in a state of being unable to connect to the network (100), in accordance with a pre-configured first radio parameter (1008). The sidelink communication (102) includes at least one of direct discovery and direct communication. It is thus, for example, possible to contribute to improvement of sidelink communication in partial coverage.

Abstract: A radio terminal (1) receives a request and a radio configuration from a network (100) when the radio terminal (1) can connect to the network (100). The request requests transmission of the radio configuration. The radio configuration includes a radio parameter for sidelink communication (102) with a second radio terminal (2) which is in a state of being unable to connect to the network (100). The sidelink communication includes at least, one of direct discovery and direct communication. The radio terminal (1) is further configured to transmit the radio configuration in response to this request, and to perform the sidelink communication in accordance with the radio configuration with the second radio terminal (2) that has received the radio configuration. It is thus, for example, possible to contribute to improvement of the sidelink communication in the partial coverage.

Abstract: A radio terminal (1) updates a preconfigured radio parameter (409, 814) stored in a memory (406, 810) coupled to the radio terminal (1). The preconfigured radio parameter (409, 814) is used by the radio terminal (1) to perform at least one of discovery and direct communication without the assistance of a Public Land Mobile Network (100). This contributes, for example, to flexible adaptation to conditions under which the ProSe communication without the assistance of a network is performed.

Abstract: A wireless parameter control device comprises: a serving cell prediction unit (11) which predicts a wireless cell which is a connection destination of a first wireless terminal within a first wireless cell upon assuming that an offset value which is added to the wireless quality which the first wireless terminal measures for each wireless cell is changed to a prescribed candidate value; a communication speed index prediction unit (12) which predicts a communication speed index of the first wireless terminal upon assuming that the offset value is changed to the prescribed candidate value and/or a communication speed index of a second wireless terminal within a second wireless cell which is present in the periphery of the first wireless cell; and a coverage control unit (13) which, on the basis of the result of the prediction of the communication speed index, controls the coverage of the first wireless cell and/or the coverage of the second wireless cell.

Abstract: An ink-jet printer, including: an ink-jet head; and a head moving device for moving the head in a scanning direction, wherein the ink-jet head includes a first head unit having a first nozzle row from which first ink is ejected and a second nozzle row from which second ink that differs in color from the first ink is ejected, a second head unit disposed so as to be shifted from the first head unit in a nozzle arrangement direction by a distance less than a nozzle pitch, and a third head unit disposed between the first and second head units in the scanning direction so as to be shifted from the first head unit in the nozzle arrangement direction by a distance corresponding to a predetermined natural number multiple of the nozzle pitch, the third head unit having fifth and sixth nozzle rows from which the first ink is ejected.

Abstract: The inventive extraction/separation method involves the step of contacting an organic phase containing a dialkyldiglycol amic acid extractant: R1R2NCOCH2OCH2COOH with an aqueous solution containing scandium and zirconium and/or hafnium for thereby extracting zirconium and/or hafnium into the organic phase. The purity of scandium can be efficiently increased by the simple step of solvent extraction.

Abstract: In one embodiment, a radio terminal (2) is used in a radio communication system (100) and communicates with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100). This embodiment therefore contributes to simplification of a measurement function which should be supported by the radio terminal when the radio communication system uses a shared frequency (e.g., TVWS) shared by the plurality of radio systems.

Abstract: A liquid cartridge includes a liquid chamber, a partitioning wall partitioning the liquid chamber into a first liquid chamber and a second liquid chamber, a communication opening through which liquid can flow from the first liquid chamber to the second liquid chamber, and a movable member which is movable between a block position and a communication position. When the movable member is in the block position, the movable member is configured to prevent the liquid from flowing from the first liquid chamber to the second liquid chamber through the communication opening, and when the movable member is in the communication position, the liquid is allowed to flow from the first liquid chamber to the second liquid chamber through the communication opening.

Abstract: A radio terminal (2) is provided that can be used in a radio communication system (100) and can communicate with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100).

Abstract: An information processing apparatus according to the present invention includes: a detection unit that detects detection information that is information indicating an external state of the apparatus; a communication unit that receives reception information that is a determination result given by another apparatus; and a control unit that calculates a first determination result that is a result acquired by determining a state of a surrounding of the apparatus based on the detection information and the reception information, transmits the first determination result to the another apparatus via the communication unit, and activates a necessary function for the detection unit or the communication unit and stops an unnecessary function thereof.