Abstract: A mobile communication system is provided that performs bi-directional communications between a mobile station and a wireless access network device. The mobile station includes a connection set-up signal reception timing calculation unit for calculating a reception timing of a connection set-up signal when a connection request signal is transmitted, and a connection set-up signal reception determination unit that determines, according to the reception timing, whether the connection set-up signal is received, and performs a signal reception operation based on the determination.

Abstract: A resin pipe joint including: a synthetic resin-made joint body including an inner cylinder portion, an external thread portion, and a radial groove m into which an end of a tube enters; and a union nut that is made of a transparentable fluorine resin, and the union nut including an internal thread portion, a seal peripheral edge which presses a tip end portion of a tube flared portion, a slipping-off prevention peripheral edge which is actable on a large-diameter portion of a flaring changing region, and a pressing inner peripheral portion which is externally fittable to a flared straight portion.

Abstract: In a resin pipe joint having a configuration where, by a screw advancement of a union nut caused by screwing an internal thread to an external thread in a state where a tube is externally fitted to an inner cylinder to form a flared portion, a flaring changing region is pressed by a seal pressing portion, a torque varying portion in which projecting portions of a joint body and recess portions of the union nut are fitted to or unfitted from each other by a flexural displacements of the projecting portions in the direction of the axis in accordance with fastening rotation of the union nut from the vicinity of a portion in front of an end of the screw advancement, the screw advancement being caused by pressing of the seal pressing portion against the flaring changing region is configured.

Abstract: The present invention is designed to provide highly efficient small cell radio access that is specially customized for small cells. In a communication system having a macro base station apparatus (30) that forms a macro cell and a plurality of local base station apparatuses that are connected with the macro base station apparatus (30) via a communication link and that form small cells inside the macro cell, the macro base station apparatus (30) or the local base station apparatuses allocate signals to be transmitted and received by the small cells to specific radio resources and transmit the signals, and also report identification information that can identify the radio resources where the signals transmitted and r received by the small cells are allocated, to a mobile terminal apparatus.

Abstract: A resin pipe joint has: a synthetic resin-made joint body including an inner cylinder portion and an external thread portion; and a synthetic resin-made union nut including: an internal thread portion; a seal peripheral edge which is actable on a tip-end portion of a tube flared portion; a slipping-off prevention peripheral edge which is actable on a large-diameter portion of the flaring changing region; and a pressing inner peripheral portion which is externally fittable to a flared straight portion that is fitted to a straight barrel cylinder portion.

Abstract: The present invention is designed to provide highly efficient small cell radio access. Local stations (20) transmit small cell-specific DISCOVERY SIGNALS, and a mobile terminal apparatus (10) receives MEASUREMENT CONFIGURATION, in which a DS reception control signal is contained, from a macro station (30). The mobile terminal apparatus (10) receives the DISCOVERY SIGNALS based on control information reported by the MEASUREMENT CONFIGURATION. The macro station (30) selects local stations whose CSI information is to be fed back, based on DISCOVERY SIGNAL MEASUREMENT reports, and reports RRC CONNECTION RECONFIGURATION, in which local station information for feeding back CSI information is contained, to the mobile terminal apparatus (10).

Abstract: The present invention is designed to provide highly efficient small cell radio access. The communication system of the present invention has a macro station (30) that forms a macro cell, a plurality of local stations (20) that are connected with the macro station (30) via communication links and that form small cells in the macro cell, and a mobile station (10) that can communicate with a macro station (30) using a radio communication scheme for the macro cell, and that can communicate with each local station (20) using a radio communication scheme for the small cells, and the macro station (30) transmits, to the mobile station (10) or to the local stations (20), a first control signal that can indicate that a second measurement signal, which is different from a first measurement signal that is used between the macro station (30) and the mobile station (10), is transmitted.

Abstract: The present invention is designed to provide highly efficient small cell radio access. In a communication system to include a macro station (30), a local station (20), and a mobile terminal apparatus (10), the local station (20) generates measurement signals that are used in measurements in the mobile terminal apparatus (10) based on user an identifier or a user group identifier, and transmits this signal to the mobile terminal apparatus (10). The mobile terminal apparatus (10) receives the measurement signals transmitted from the local station (20) and carries out with measurements with respect to the measurement signals based on the user identifier or the user group identifier.

Abstract: A system for supporting smooth mobility of a mobile terminal apparatus between a plurality of local areas that are arranged in a wide area is disclosed. The system includes a wide area base station apparatus that covers a wide area, a local area base station apparatus that covers a local area arranged in the wide area, and a mobile terminal apparatus that can communicate with the wide area base station apparatus and the local area base station apparatus, and is configured to scramble a data signal and a reference signal by a scrambling sequence that is common between a plurality of local areas in communication between the local area base station apparatus and the mobile terminal apparatus.

Abstract: The present invention is designed to make effective use of radio resources in VSEC to output a plurality of beams of varying tilt angles for sectorization in vertical directions. A radio communication method for a radio base station that outputs a plurality of beams of varying tilt angles and forms a plurality of cells that are sectorized vertically, and a user terminal that establishes wireless connection with the radio base station, provides the steps in which the radio base station acquires information about the communication capacity of each of the plurality of cells, and controls the vertical plane beam width and/or transmission power of each cell and sets the coverage area of each cell so that differences in communication capacity between the plurality of cells are reduced.

Abstract: In a mobile communication system according to the present invention, the mobile communication system is configured to manage a specific mobile station which is allowed to communicate through a CSG cell under the control of a home base station (Home-eNB); and a general mobile station (UE) other than the specific mobile station is configured to be capable of using the CSG cell as a camped cell, only when broadcast information indicating an allowance of a camping in the specific cell is received.

Abstract: Provided is an information processing apparatus including: a setting unit that sets, for electronic documents, a document ID by which an older version or a newer version can be determined among a plurality of sequential electronic documents; a linking unit that links attachment information to an electronic document; a request accepting unit that accepts a request for an electronic document; an attachment information acquiring unit that, in response to acceptance of the request for the electronic document, acquires the attachment information linked to an electronic document of which version is older than the electronic document related to this request based on the document ID; and a response outputting unit that outputs the electronic document related to the request and the acquired attachment information.

Abstract: A communication control device includes a parameter acquisition unit which acquires a first parameter determined on the basis of the number of mobile stations connected to the first cell or the number of mobile stations connected to the second cell, a parameter determination unit which changes the number of mobile stations connectable to the first cell or the number of mobile stations connectable to the second cell on the basis of the first parameter, and a parameter notification unit which notifies at least any one of the first base station and the second base station of the determined second parameter.

Abstract: The present invention relates to a mobile communication system which applies a high-speed downlink packet transmission scheme (HSDPA scheme) in a downlink and an enhanced uplink packet transmission scheme (EUL scheme) in a uplink between a mobile station and a base station. In the mobile communication system according to the present invention, a serving cell in the high-speed downlink packet transmission scheme for a specified mobile station and a serving cell in the enhanced uplink packet transmission scheme for the specified mobile station are modified so as to become the same cell.

Abstract: A handover method according to the present invention includes the steps of: forwarding, at a handover-source radio base station (eNB), user data (A) for a mobile station (UE) to a handover-target radio base station (eNB) when it is determined that a handover processing is to be performed, the user data (A) being stored in the handover-source radio base station (eNB); activating, at the handover-target radio base station, a predetermined timer when transmitting a path switch request to a path control apparatus, and storing second user data for the mobile station received from the path control apparatus until the predetermined timer expires; and forwarding, at the handover-target radio base station, the stored second user data to the mobile station after the predetermined timer expires.

Abstract: It is an object of the present invention to provide a mobile station which enables transmission of control information on broadcast communication or multicast communication to a radio network controller without establishing a dedicated channel in broadcast communication or multicast communication. The mobile station related to this invention includes a control information generating unit (14) for generating control information on broadcast communication or multicast communication, a control information identifier adding unit (15, 16, 17) for adding a control information identifier for specifying a type of the control information to the control information, and a transmitting unit (12) for transmitting the control information to a radio network controller (RNC) via a common channel.

Abstract: A cell selection method includes steps of: (A) determining, at a mobile station (UE), whether or not a first CSG cell satisfies a predetermined condition, when using a first macro cell as a camped cell; and (B) changing, at the mobile station (UE), the camped cell from the first macro cell to a first CSG cell, when determined that the first CSG cell satisfies the predetermined condition.

Abstract: A tracking area setting apparatus is disclosed that includes a service request measurement unit measuring a frequency of occurrence of a service request transmitted by a user equipment terminal to a cell where the user equipment terminal is located based on a paging channel transmitted in all cells belonging to a tracking area where the user equipment terminal is located, the user equipment terminal being a target user equipment terminal to receive a call, the tracking area including one or more cells and a tracking area determination unit determining whether a number of the frequency of occurrence of the service request in a predetermined cell is equal to or greater than a predetermined threshold value based on the frequency of occurrence of the service request and, when determining yes, separate the predetermined cell from the tracking area to which the predetermined cell belongs.

Abstract: Embodiments of the present invention make it possible to reduce loss and delay of downlink user data transmitted at regular time intervals in a mobile communication system employing a hard handover method, and make it possible to easily perform high-quality handover solely by a handover-starting base station. A base station for transmitting downlink user data at regular time intervals to a mobile station is disclosed. The base station is configured to transmit a handover-command signal immediately after transmitting the downlink user data to the mobile station.

Abstract: A base station apparatus to be used for a mobile communication system capable of providing communications using plural frequency carriers is disclosed. The base station apparatus includes a frequency carrier selection unit selecting one of a first frequency carrier and a second frequency carrier as a frequency carrier to be used for the communications based on at least one of a service type of the communications and a congestion degree of the communications, the first frequency carrier being used for communications based on allocation in which radio resources are dynamically allocated, the second frequency carrier being used for communications based on allocation in which the radio resources are allocated at every predetermined period.