Abstract: A transmission device includes: a relay device information obtaining unit (101) which obtains self-device transmission status information that is information indicating a transmission status of a communication device; a neighboring communication device determining unit (102) which determines, from other communication devices connected to the network, neighboring communication devices; a neighboring communication device information obtaining unit (103) which obtains another-device transmission status information from each of the neighboring communication devices; a transmission rate control information correcting unit (104) which generates corrected transmission status information based on an amount of statistics calculated from the self-device transmission status information and the another-device transmission status information; a transmission rate determining unit (105) which determines a transmission rate of data, based on the corrected transmission status information; and a data transmission unit (106) wh

Abstract: The terminal includes: the transmitting and receiving unit (908) transmitting and receiving the observation packet for observing the transmission quality and data; the transmission quality managing unit (906) (i) exchanging the observation packet with another terminal via the transmitting and receiving unit (908), (ii) observing a loss rate of the data between the terminal and the other terminal and writing to the observation packet the degraded state information indicating the loss rate in the case where the terminal receives the data, and (iii) subtracting the congested state information from the degraded state information included in the observation packet collected from the other terminal in order to calculate a transmission error rate of the data in the terminal and the relay device in the case where the terminal transmits the data; and the error correction code processing unit (905) determining a forward error correction capability based on the transmission error rate calculated by the transmission qual

Abstract: The sensor device according to the present invention is comprised of: an address storage unit 107 which stores a channel address to be used; a temperature sensor 103; a table storage unit 101 which stores an address table in which a measurement value is associated with a channel address; an address specification unit 102 which specifies a channel address associated with a measured value obtained from the temperature sensor 103; an address update unit 105 which updates the channel address in the address storage unit 107; a judgment unit 108 which judges whether or not inquiry data is directed to the channel address stored in the address storage unit 107; a response generation unit 106 which generates response data which is a response to the inquiry data; and a communication unit 109 which transmits the response data to a retrieval node 120.

Abstract: The present invention provides a mobile terminal that can follow a control policy decided for an applicable area, as well as a mobile terminal control policy specification system. The present invention provides mobile terminals 3a, b, which receive data from RFID tags 5a, b. Specifically, the mobile terminals 3a, b each comprise a storage unit 33, a determination unit 34, and a control unit 36. The storage unit 33 associates and stores control policies that control the mobile terminals 3a, b, with policy identifiers that identify the control policies. The determination unit 34 determines whether any one of the policy identifiers stored by the storage unit 33 is included in the received data. If the determination unit 34 determines that any one of the stored policy identifiers is included in the received data, then the control unit 36 will control the mobile terminal based on the control policy associated with the received policy identifier.