Abstract: Provided is a resin-coated aluminum alloy sheet characterized in that the sheet has a coating resin layer formed of a cured resin composition comprising an epoxy resin and a curing agent, the coating resin layer comprising a graphite particle with an amount of 5.0 to 25.0 parts by mass relative to a total of 100.0 parts by mass of the epoxy resin and the curing agent and a silica particle with an amount of 3.0 to 28.0 parts by mass relative to a total of 100.0 parts by mass of the epoxy resin and the curing agent, and a thickness of the coating resin layer being 2.0 to 25.0 ?m. According to the present invention, it is possible to provide the resin-coated aluminum alloy sheet having both a good heat radiative property and a high moisture resistance.

Abstract: A wireless system can use a shared frequency mainly used by an existing first wireless system under predetermined sharing conditions, and includes a communication unit performing wireless communication with a terminal accommodated in a communication area, at least one sensor disposed around the communication area and measuring reception power of a signal sent from the inside of the communication area via the communication unit, a memory storing beam data indicating a correspondence relationship between a beam direction of the signal and a measurement result in the sensor, a determination unit determining allowable maximum transmission power of the signal in each beam direction on the basis of the sharing conditions and the beam data, and an allocation unit allocating a radio resource to the terminal on the basis of the allowable maximum transmission power in each beam direction and channel state information reported from the terminal.

Abstract: A thermoplastic polyester resin foam sheet includes a foam layer containing a thermoplastic polyester resin, in which a number average molecular weight Mn of the thermoplastic polyester resin is 9,000 to 26,000, a Z-average molecular weight Mz is 240,000 to 710,000, and a content of acetaldehyde in the foam layer is 25 ppm by mass or less.

Abstract: A wireless system can use a shared frequency mainly used by an existing first wireless system under predetermined sharing conditions, and includes a communication unit performing wireless communication with a terminal accommodated in a communication area, at least one sensor disposed around the communication area and measuring reception power of a signal sent from the inside of the communication area via the communication unit, a memory storing beam data indicating a correspondence relationship between a beam direction of the signal and a measurement result in the sensor, a determination unit determining allowable maximum transmission power of the signal in each beam direction on the basis of the sharing conditions and the beam data, and an allocation unit allocating a radio resource to the terminal on the basis of the allowable maximum transmission power in each beam direction and channel state information reported from the terminal.

Abstract: A precoated aluminum material to which various resin members can be bonded and an aluminum composite material that is prepared using this precoated aluminum material are provided. A precoated aluminum material (1) comprises: a substrate (2) composed of an aluminum material; and a primer coating (3) formed on the substrate (2). The primer coating (3) contains urethane resin. In the infrared-absorption spectrum of the primer coating (3), the value of the optical absorption AC?O at the peak top of the maximum peak among peaks present in the wavenumber range of 1,180-1,330 cm?1 is 0.8-1.5 times that of the optical absorption Aurethane at the peak top of the maximum peak among peaks present in the wavenumber range of 1,670-1,770 cm?1.

Abstract: A shared frequency management apparatus includes a communicator receiving application information regarding use of a shared frequency band from each of base stations of plural different communication companies, a determiner determining whether or not allocation of different TDD patterns during use of adjacent carrier frequencies among plural carrier frequencies included in the shared frequency band is possible on the basis of the application information from each base station, a setter setting the TDD pattern for each of the carrier frequencies on the basis of the application information from each base station and a determination result of whether or not allocation of the different TDD patterns is possible, and a decision unit deciding an allocation content of the shared frequency band to each base station, satisfying the application information from each base station, on the basis of a setting result of the TDD pattern for each carrier frequency.

Abstract: A wireless terminal that: for previous communications between the wireless terminal and base stations, stores as a communication history at least position information for the wireless terminal and information pertaining to each base station; acquires the position information for the wireless terminal and, on the basis of the position information for the wireless terminal and the stored communication history, derives from multiple base stations at least a connection subject base station to be used in data communication and a connection standby base station, which is the base station having the next highest connection priority after the connection subject base station; and performs data communication when a trial connection with the connection subject base station has succeeded, and switches the connection subject base station to be used in data communication to the connection standby base station when communication with the connection subject base station is interrupted.

Abstract: A wireless communication system includes a first base station connectable to a backbone network by a wireless backhaul, and a path generator generating a wireless multi-hop path including the first base station and one or more second base stations connected to the first base station by a wireless multi-hop. The first base station reports a measurement result of a line quality of the wireless backhaul and a measurement result of a line quality between the first base station and the second base station disposed around the first base station. The first base station is switched to a first mode connected to the backbone network by the wireless backhaul or to a second mode connected to the second base station by a wireless multi-hop, in response to the path signal.

Abstract: A wireless receiver measures a reception parameter while scanning multiple pieces of reception directivity for an interval during which a signal is not transmitted from a wireless transmitter. The wireless transmitter transmits a signal while scanning multiple pieces of transmission directivity, and the wireless receives measures a reception parameter relating to reception of the signal and determines k pieces of transmission directivity that correspond to high-ranking k results, respectively, of the measurement that have a great reception parameter. The wireless transmitter forms any transmission directivity and transmits a signal, and the wireless receives measures a reception parameter while scanning M pieces of reception directivity and determines reception directivity that is to be used for data communication.

Abstract: Provided is a wireless relay device that determines whether or not the wireless relay device has to withdraw from a first wireless multi-hop network to which the wireless relay device itself belong, transmits, in a wireless multi-hop, a request for a connection that uses wireless communication in compliance with a first communication scheme between the wireless relay device and at least one wireless base station, to a wireless base station on the first wireless multi-hop network, according to a result of the determination that the wireless relay device withdraws from the first wireless multi-hop network, and allocates the wireless communication in compliance with the first communication scheme between the wireless relay device and the at least one wireless base station according to a control signal that is transmitted from the wireless base station on the first wireless multi-hop network.

Abstract: A wireless terminal capable of communicating with multiple wireless base stations through a network in which multiple wireless communication methods are used in a mixed manner. A storage unit stores, as a communication history, at least location information for the wireless terminal and information pertaining to the wireless base station at the time of communication with each wireless base station. An acquisition unit acquires the location information for the wireless terminal. On the basis of the acquired location information for the wireless terminal and the communication history stored in the storage unit a derivation unit derives a connection base station from the multiple wireless base stations, as the wireless base station to be used in data communication. A communication unit performs data communication with the derived connection base station.

Abstract: A base station holds information on uplink radio resources which has been allocated to at least one already connected communication terminal for performing radio communication using a high frequency with the base station, receives a notification of participation in a radio communication system from a new communication terminal, and allocates unallocated uplink radio resources using high frequencies to the new communication terminal based on the information on the uplink radio resources when received the notification of participation. The new communication terminal transmits data to the base station by using the allocated uplink radio resources.

Abstract: Provided is a communication terminal configured to communicate with base stations, including a memory and a processor. The processor executes a position acquisition task that acquires position information on the communication terminal, an accumulation task that accumulates connection frequency information and discontinuance frequency information that relate to communication with each of the base stations at a position of the communication terminal, a determination task that determines a connection priority for preferentially making a connection to each of the base stations from a position of the communication terminal, based on the connection frequency information and the discontinuance frequency information at the position of the communication terminal, a connection control task that controls a connection to each of one or more base stations, in a descending order of the determined connection priority, and a communication task that performs data communication with the one or more base stations.

Abstract: A wireless base station extracts a connection base station from a plurality of other wireless base stations, as a candidate of a wireless base station which communicates user data with a wireless communication terminal, based on positional information of the wireless communication terminal, information of a wireless communication method capable of being employed by the wireless communication terminal, information of ranges in which the other wireless base stations are able to communicate, and information of wireless communication methods capable of being employed by the other wireless base stations.

Abstract: A shared frequency management apparatus includes a communicator receiving application information regarding use of a shared frequency band from each of base stations of plural different communication companies, a determiner determining whether or not allocation of different TDD patterns during use of adjacent carrier frequencies among plural carrier frequencies included in the shared frequency band is possible on the basis of the application information from each base station, a setter setting the TDD pattern for each of the carrier frequencies on the basis of the application information from each base station and a determination result of whether or not allocation of the different TDD patterns is possible, and a decision unit deciding an allocation content of the shared frequency band to each base station, satisfying the application information from each base station, on the basis of a setting result of the TDD pattern for each carrier frequency.

Abstract: A wireless system can use a shared frequency mainly used by an existing first wireless system under predetermined sharing conditions, and includes a communication unit performing wireless communication with a terminal accommodated in a communication area, at least one sensor disposed around the communication area and measuring reception power of a signal sent from the inside of the communication area via the communication unit, a memory storing beam data indicating a correspondence relationship between a beam direction of the signal and a measurement result in the sensor, a determination unit determining allowable maximum transmission power of the signal in each beam direction on the basis of the sharing conditions and the beam data, and an allocation unit allocating a radio resource to the terminal on the basis of the allowable maximum transmission power in each beam direction and channel state information reported from the terminal.

Abstract: A shared frequency management system that manages sharing of frequencies of a shared frequency band mainly used by a first wireless system with a second wireless system, includes an input unit that receives first border information regarding a first border indicating a border of a first region in which a reception level based on transmission of a first wireless signal using the frequencies of the shared frequency band from the first wireless system becomes a defined value, a deriving unit that derives second border information regarding a second border indicating a border of a second region in which a reception level based on transmission of a second wireless signal using the frequencies of the shared frequency band from the second wireless system becomes the defined value, and a permission condition determination unit that determines a sharing permission condition regarding the frequencies of the shared frequency band for the second wireless system on the basis of the first border information and the second

Abstract: There is provided a wireless base station device capable of reducing a communication delay time related to communication of a priority call. A wireless base station device includes a processor a memory, and an antenna. The memory stores a wireless resource allocated to a priority call of radio channels for transmission of data with a wireless communication terminal before a priority call is generated under the control of the processor. The processor allocates the wireless resource stored in the memory to a generated priority call. The antenna performs communication of data of the priority call by using the allocated wireless resource.

Abstract: A wireless communication system includes a first base station connectable to a backbone network by a wireless backhaul, and a path generator generating a wireless multi-hop path including the first base station and one or more second base stations connected to the first base station by a wireless multi-hop. The first base station reports a measurement result of a line quality of the wireless backhaul and a measurement result of a line quality between the first base station and the second base station disposed around the first base station. The first base station is switched to a first mode connected to the backbone network by the wireless backhaul or to a second mode connected to the second base station by a wireless multi-hop, in response to the path signal.