Abstract: A mobile communication system in which a number of common channels are added due to the offering of a new service includes: the assumption that a plurality of common channels can be arranged to transmit the same data, a monitor means that uses the reception path search results of either dedicated channels or random access channels of mobile stations to monitor the communication state of mobile stations within the cell and a control means that, when it is determined that distribution within the cell of mobile stations that receive the new service is unbalanced, effects control to divide and use the communication range permitted by a plurality of common channels.

Abstract: A mobile communication system including base stations, wherein each base station includes: a report unit which exchanges a current target value of communication quality for a mobile station with other base stations; a comparison unit which compares a current target value of a current station with target values of the other base stations; and a management unit which changes the current target value based on the comparison result of the comparison unit.

Abstract: A multi-vortex flowmeter includes a vortex type detection device including a measurement tube provided in a flow channel to allow a fluid to be measured to pass, a vortex generator provided in the measurement tube to face a flow of the fluid to be measured, and a vortex detector for detecting a change based on a Karman vortex generated by the vortex generator. The flowmeter also includes a thermal type detection device including a temperature sensor and a heating temperature sensor, each protruding into the flow channel, and a flow rate converter, in which a pressure gauge for measuring a pressure in a pipe wired together with the vortex detector and the thermal detection device is provided integrally with the flow rate converter.

Abstract: A mobile communication system including base stations, wherein each base station includes: a report unit which exchanges a current target value of communication quality for a mobile station with other base stations; a comparison unit which compares a current target value of a current station with target values of the other base stations; and a management unit which changes the current target value based on the comparison result of the comparison unit.

Abstract: A mobile communication system in which a number of common channels are added due to the offering of a new service includes: the assumption that a plurality of common channels can be arranged to transmit the same data, a monitor means that uses the reception path search results of either dedicated channels or random access channels of mobile stations to monitor the communication state of mobile stations within the cell and a control means that, when it is determined that distribution within the cell of mobile stations that receive the new service is unbalanced, effects control to divide and use the communication range permitted by a plurality of common channels.

Abstract: A multi-vortex flowmeter (1) includes vortex type detection means (7) including a measurement tube (4) provided in a flow channel (13) to allow a fluid to be measured to pass, a vortex generator (5) provided in the measurement tube (4) to face a flow of the fluid to be measured, and a vortex detector (6) for detecting a change based on a Karman vortex generated by the vortex generator (5), thermal type detection means (10) including a temperature sensor (8) and a heating temperature sensor (9), each protruding into the flow channel (13), and a flow rate converter (11), in which a pressure gauge (3) for measuring a pressure in a pipe wired together with the vortex detector (6) and the thermal detection means (10) is provided integrally with the flow rate converter (11).

Abstract: Buffer (2) temporarily stores a packet transmitted from transmission node (1). Counter (3) measures the size (length) of the packet sent from buffer (2), and memory (4) temporarily stores the value of counter (3). Register (5) stores a desired bandwidth, and register (6) stores the maximum transmission physical bandwidth of transmission node (1). Arithmetic circuit (7) calculates the size of an IFG to be inserted, on the basis of the data in memory (4), register (5), and register (6). Counter (8) counts the IFG size calculated by arithmetic circuit (7). Counter (9) measures the remaining capacity of buffer (2), and pause generator (10) generates a pause frame according to the value of counter (9) and outputs it to transmission node (1).

Abstract: A communication bit rate computing unit (24) computes the cumulative bit rate of downlink communication data, at which a base station communicates with a terminal, and totalizes the bit rates for each sector area. A amplitude/phase control unit (23) checks whether the cumulative bit rate for each sector area, reported from the communication bit rate computing unit (24), is higher than a first threshold or lower than a second threshold. If the cumulative bit rate is higher than the first threshold, the amplitude/phase control unit (23) performs directing characteristic control so as to narrow the area range of the corresponding sector area to a range smaller than a standard area range. If the cumulative bit rate is lower than the second threshold, the amplitude/phase control unit (23) performs directing characteristic control so as to widen the area range of the corresponding sector area to a range larger than the standard area range.

Abstract: This invention provides a handover control system adapted to switch connection of a mobile station from connection with a source base station to connection with a target base station as the mobile station moves, wherein: the mobile station transmits a predetermined signal to at least the target base station before a handover; the target base station reports a reception quality of the predetermined signal to the source base station; and the source base station compares a reception quality of a communication signal from the mobile station with the reception quality of the predetermined signal reported from the target base station to select a base station with the highest reception quality as a target base station candidate, and instructs the mobile station to start the handover with the selected base station.

Abstract: A system according to an exemplary aspect of the invention is a hand over control system for performing a connection switching from a source base station to a target base station along with movement of a mobile station, including a control unit for controlling the connection switching in accordance with a comparison result of comparing a received signal quality of an up-link signal from the mobile station to the source base station and a received signal quality of an up-link signal from the mobile station to the target base station, wherein the target base station performs the measurement of the received signal quality of the up-link signal from the mobile station to the target base station without decoding communication data from the mobile station until the connection switching is performed.

Abstract: A communication bit rate computing unit (24) computes the cumulative bit rate of downlink communication data, at which a base station communicates with a terminal, and totalizes the bit rates for each sector area. A amplitude/phase control unit (23) checks whether the cumulative bit rate for each sector area, reported from the communication bit rate computing unit (24), is higher than a first threshold or lower than a second threshold. If the cumulative bit rate is higher than the first threshold, the amplitude/phase control unit (23) performs directing characteristic control so as to narrow the area range of the corresponding sector area to a range smaller than a standard area range. If the cumulative bit rate is lower than the second threshold, the amplitude/phase control unit (23) performs directing characteristic control so as to widen the area range of the corresponding sector area to a range larger than the standard area range.

Abstract: An adaptive antenna transmission apparatus, used in a base station apparatus of a cellular communication system, for transmitting signals by a plurality of antenna elements constituting an adaptive antenna. In the adaptive antenna transmission apparatus, a base station apparatus (1) detects an interference component, which is a reflection component of a downlink transmission signal of its own base at an interference processing part (7), and controls the downlink transmission directivity, in accordance with the result of detection at a signal processing part (4), so as to minimize the reflected component. This can reduce the interference power of the downlink transmission signal at the base station apparatus (1), and thereby can prevent decrease of the channel capacity and make the effective operation of the base station.

Abstract: An adaptive antenna directivity control method and a system therefor is capable of reducing interference in an up-link and/or a down-link upon initiation of handoff to improve communication quality upon initiation of handoff to speed-up directivity control resulting in increasing of channel capacity. In the adaptive antenna directivity control method, a mobile station and base station to be connected with the mobile station in radio through an up-link and a down-link are governed by a supervisory station. Respective transmission signal or reception signal of a plurality of antenna elements of the base station are varied in amplitude and phase for combining in a particular orientation for establishing a directivity by a radiation pattern by combining.

Abstract: In an adaptive antenna device having directivity pattern generators operable in accordance with different algorithms, respectively, in a baseband modem, beam steering processing, null steering processing, and estimating processing of an arrival direction are executed in parallel to one another. Parameters resulting from the beam and the null steering processing are controlled by processing results of the estimating processing and are weighted and combined to individually generate directivity patterns based on the different algorithms.

Abstract: In an adaptive antenna device having directivity pattern generators operable in accordance with different algorithms, respectively, in a baseband modem, beam steering processing, null steering processing, and estimating processing of an arrival direction are executed in parallel to one anther. Parameters resulting from the beam and the null steering processing are controlled by processing results of the estimating processing and are weighted and combined to individually generate directivity patterns based on the different algorithms.

Abstract: Circuitry for controlling the directivity of an adaptive antenna including a plurality of antenna elements and forming the directivity by varying signals fed to the antenna elements such that a gain in a preselected direction increases is disclosed. The circuitry includes a transmitting section for transmitting a scanning pilot channel for scanning on a downlink while causing the pilot channel to move in a propagation range covered by the adaptive antenna. A receiving section receives a signal representative of the intensity of the scanning pilot channel received by a mobile station. A controller detects a transmission direction in which the mobile station receives the scanning pilot channel with the highest quality, and applies the directivity parameter of the detected direction to the directivity of a downlink. The circuitry improves the directivity of the downlink in mobile communication.

Abstract: A cellular mobile communication network in a code division multiple access system includes plural base stations covering cells, respectively, a host base station communicable with the plural base stations and plural mobile stations moved in the cells; when a mobile station becomes uncontrollable, the base station communicating the failure mobile station requests the host base station to register the identity code of the failure mobile station in a list of failure stations, and changes the control channel from an original radio frequency to a new radio frequency without informing the failure mobile station of the new radio frequency so as to disconnect the failure mobile station from the cellular mobile communication network; when another mobile station transmits a request for communication to a base station, the base station inquires the host base station whether the request is acceptable or not, and the host base station checks the list to see whether the identity code of the mobile station has been already

Abstract: Fluorocarbon polymer coating composition and coating film include a fluorocarbon polymer powder, a binder and an additive comprised by a substance having a surface free energy smaller than that of the binder. The coating composition and coating film have improved resistance to deterioration with time of the water repellent properties of the film.

Abstract: A cellular mobile communication network in a code division multiple access system includes plural mobile stations and at least one base station, and the at least one base station periodically supplies a transmission power control instruction representative of decrease or increase of the transmission power of a transmit signal from each mobile station to the at least one base station; when the base station receives the transmit signal from a mobile station, the base station measures the electric power to see whether or not the mobile station is faithful to the transmission power control instruction; if the mobile station repeats the disobedience, the mobile station is diagnosed to be a failure station serving as a serious interference power source.

Abstract: In a spread spectrum communication system, as base station transmission channels are used a synchronizing channel for continuously transmitting a predetermined PN code from a base station (generated by a synchronizing pilot channel generating block), a identifying channel for continuously transmitting a predetermined multivalued PN code every base station (generated by an identifying pilot channel generating block), and a communication channel for enabling the identification of a base station transmitting data by multiplying the multivalued PN code used in the identifying channel by communication data after spectrum spreading (generated by a communication channel generating block).