Abstract: A data distribution control apparatus controls data distribution in which distribution data having the same content are distributed to multiple wireless terminals. The data distribution control apparatus is provided with a terminal identifying unit which identifies the multiple wireless terminals to which the distribution data are distributed and a base station designating unit which designates a set of base stations selected so that one or more base stations can be connected to all of the multiple wireless terminals as the set of base stations which transmit the distribution data to the wireless terminals. The base station designating unit includes, in the set, a base station which can be connected to the multiple wireless terminals, prior to a base station which can be connected to only one wireless terminal.

Abstract: A timeout value determining method of a link aggregation apparatus includes receiving link aggregated packets from a plurality of links, the link aggregated packets flowing on a packet flow between two end hosts, determining a delay relating to a remote host within the two end hosts, reordering the link aggregated packets based on an order in the packet flow, and calculating, by using a processor, a timeout value corresponding to each of the links based on a packet loss and the delay, each timeout value is used to wait reception of a packet from a corresponding link.

Abstract: A base station including: a first antenna for a first wireless communication, a second antenna for a second wireless communication, and a processor to receive a request from a registered mobile terminal that is registered with the base station, to communicate with the registered mobile terminal by using the first wireless communication in accordance with the request, and to control a non-registered mobile terminal that is not registered with the base station, so as to communicate with the base station by using the second wireless communication, when the non-registered mobile terminal communicates with the base station by using the first wireless communication and a condition of a communication performed by the base station is not satisfied.

Abstract: A communication apparatus that is coupled to a mobile terminal through a wireless link and to a network through a wired link, and that is relaying communications between the mobile terminal and the network. The communication apparatus includes a first transmission-rate acquisition unit and a power control unit. The first transmission-rate acquisition unit acquires wired-link information related to a transmission rate in the wired link. The power control unit controls at least one of a first transmission power of the communication apparatus in downlink transmission to the mobile terminal and a second transmission power of the mobile terminal in uplink transmission from the mobile terminal so as to reduce the difference between a transmission rate in the wireless link and the transmission rate in the wired link.

Abstract: A data distribution control apparatus controls data distribution in which distribution data having the same content are distributed to multiple wireless terminals. The data distribution control apparatus is provided with a terminal identifying unit which identifies the multiple wireless terminals to which the distribution data are distributed and a base station designating unit which designates a set of base stations selected so that one or more base stations can be connected to all of the multiple wireless terminals as the set of base stations which transmit the distribution data to the wireless terminals. The base station designating unit includes, in the set, a base station which can be connected to the multiple wireless terminals, prior to a base station which can be connected to only one wireless terminal.

Abstract: A base station controls random access that includes non-contention random access where the base station allocates to each terminal, a dedicated code as a preamble. The base station includes a wireless communications interface; and a processor configured to measure non-contention random access load received by the wireless communications interface; to determine a dedicated code count, based on the non-contention random access load measured; and to control the non-contention random access using the dedicated code count determined.

Abstract: A terminal information acquiring unit acquires terminal information on the priority of a terminal device that requests the assignment of a preamble to a base station apparatus. A priority determining unit determines whether the priority of the terminal device is not less than a predetermined reference on the basis of the terminal information acquired by the terminal information acquiring unit. A preamble assigning unit refers to the determination result reported from the priority determining unit and assigns a preamble to the terminal device when the priority of the terminal device is not less than the predetermined reference. The preamble assigning unit then outputs assignment information indicating the assigned preamble to a transmitting unit. The transmitting unit transmits the assignment information output from the preamble assigning unit.

Abstract: A base station controls random access that includes non-contention random access where the base station allocates to each terminal, a dedicated code as a preamble. The base station includes a wireless communications interface; and a processor configured to measure non-contention random access load received by the wireless communications interface; to determine a dedicated code count, based on the non-contention random access load measured; and to control the non-contention random access using the dedicated code count determined.

Abstract: A terminal information acquiring unit acquires terminal information on the priority of a terminal device that requests the assignment of a preamble to a base station apparatus. A priority determining unit determines whether the priority of the terminal device is not less than a predetermined reference on the basis of the terminal information acquired by the terminal information acquiring unit. A preamble assigning unit refers to the determination result reported from the priority determining unit and assigns a preamble to the terminal device when the priority of the terminal device is not less than the predetermined reference. The preamble assigning unit then outputs assignment information indicating the assigned preamble to a transmitting unit. The transmitting unit transmits the assignment information output from the preamble assigning unit.

Abstract: A communication apparatus that is coupled to a mobile terminal through a wireless link and to a network through a wired link, and that is relaying communications between the mobile terminal and the network. The communication apparatus includes a first transmission-rate acquisition unit and a power control unit. The first transmission-rate acquisition unit acquires wired-link information related to a transmission rate in the wired link. The power control unit controls at least one of a first transmission power of the communication apparatus in downlink transmission to the mobile terminal and a second transmission power of the mobile terminal in uplink transmission from the mobile terminal so as to reduce the difference between a transmission rate in the wireless link and the transmission rate in the wired link.