Abstract: A communication device is provided in a wireless multi-hop network. The communication device receives a sequence number, a divided time acquired by dividing a time width allocated for transmitting detected usage data by a division number, and the division number. The communication device calculates a remainder by dividing the received sequence number by the division number and calculates a transmission offset time based on the remainder and the divided time. The communication device transmits the usage data based on the calculated transmission offset time.

Abstract: The present invention increases accommodation efficiency in a wireless master station for wireless slave stations, and efficiently uses wireless resources while controlling traffic. In a communication system in which a plurality of wireless slave stations 2-1, 2-2, 2-3, . . . , perform wireless communication with wireless master stations 1-1 and 1-2 directly or through another wireless slave station and which performs communication from the wireless master stations with a collection control device 3 by means of wired communication or the like. The collection control device 3 stores first through fourth threshold values a, b, c, and d in memory, and makes efficient use while suppressing traffic by performing a “connection suppression notification”, a “specific high-frequency communication stop notification”, and an “accommodation refusal notification”, and performs functionality control through stages according to the number of accommodated wireless slave stations.

Abstract: The present invention increases accommodation efficiency in a wireless master station for wireless slave stations, and efficiently uses wireless resources while controlling traffic. In a communication system in which a plurality of wireless slave stations 2-1, 2-2, 2-3, . . . , perform wireless communication with wireless master stations 1-1 and 1-2 directly or through another wireless slave station and which performs communication from the wireless master stations with a collection control device 3 by means of wired communication or the like. The collection control device 3 stores first through fourth threshold values a, b, c, and d in memory, and makes efficient use while suppressing traffic by performing a “connection suppression notification”, a “specific high-frequency communication stop notification”, and an “accommodation refusal notification”, and performs functionality control through stages according to the number of accommodated wireless slave stations.

Abstract: A communication device is provided in a wireless multi-hop network. The communication device includes a receiving unit, a transmission-offset calculating unit, and a transmitting unit. The receiving unit receives a sequence number, a divided time acquired by dividing a time width allocated for transmitting detected usage data by a division number, and the division number. The transmission-offset calculating unit calculates a remainder by dividing the sequence number received by the receiving unit by the division number and calculates a transmission offset time based on the remainder and the divided time. The transmitting unit transmits the usage data based on the transmission offset time calculated by the transmission-offset calculating unit.

Abstract: A mobile terminal being a searching source that searches for a communication device transmits a searching request addressed to a communication device being a searching destination using a plurality of channels without waiting for a reply to the searching request. A communication device adjacent to the mobile terminal being the searching source, upon receiving a reply to the searching request transmitted by the transmitting from the searching destination, holds the received reply. The mobile terminal being the searching source transmits an inquiry to the adjacent communication device using a plurality of channels about whether a reply to the transmitted searching request has been received from the searching destination. With this configuration, in an ad hoc network with a reactive scheme, the time taken for searching related to a partner device can be shortened.

Abstract: A terminal used in a network that constructs a communication route with ad hoc communications is connected to a server via a gateway. The terminal generates downstream route information from the server to a specific terminal based on information relating to occurrence of downstream communication from the server to the specific terminal, the information being included in a header of upstream communication from the specific terminal to the server, and preferentially retains the downstream route information.

Abstract: An entry compression/decompression method for use in a packet relay apparatus carrying out flow identification based on an entry of a flow table describing a pattern of a packet as a subject of flow identification, comprising the steps of judging whether a new pattern to be registered in the flow table is an incremental pattern, that is, a difference with a flow identification pattern of the entry is one bit; changing a mask pattern of the entry indicating a position of a “don't care bit”in relation with the flow identification pattern in flow identification if the new pattern is an incremental pattern; and additionally registering the new pattern in the flow table as an entry if the new pattern is not an incremental pattern.

Abstract: An information collecting apparatus judges whether the received packet corresponds to a monitoring target, adds identifying information to the judged monitoring target packet, adds process information indicating a user policy used in processing of the monitoring target packet at each function processing units to the monitoring target packet, and stores each process information added to the monitoring target packet, in association with the identifying information added to the monitoring target packet.

Abstract: An information collecting apparatus judges whether the received packet corresponds to a monitoring target, adds identifying information to the judged monitoring target packet, adds process information indicating a user policy used in processing of the monitoring target packet at each function processing units to the monitoring target packet, and stores each process information added to the monitoring target packet, in association with the identifying information added to the monitoring target packet.

Abstract: An entry compression/decompression method for use in a packet relay apparatus carrying out flow identification based on an entry of a flow table describing a pattern of a packet as a subject of flow identification, comprising the steps of judging whether a new pattern to be registered in the flow table is an incremental pattern, that is, a difference with a flow identification pattern of the entry is one bit; changing a mask pattern of the entry indicating a position of a “don't care bit”in relation with the flow identification pattern in flow identification if the new pattern is an incremental pattern; and additionally registering the new pattern in the flow table as an entry if the new pattern is not an incremental pattern.

Abstract: An exhaust control apparatus for a motorcycle includes an exhaust collection pipe, which collects and combines exhaust gas from a plurality of exhaust pipes, and an exhaust valve. The exhaust valve is operatively attached to the collection pipe and controls flow of exhaust gas within the collection pipe. A pivot shaft of the exhaust valve is situated at an angle and is displaced from the centers of the exhaust pipes, such that the shaft is not aligned with the centers of the exhaust pipes. This arrangement of the pivot shaft provides a smooth, non-turbulent flow of exhaust gas, and reduces impedance to the flow of exhaust gas. The exhaust control apparatus may be mounted to reside within a recess formed in a motorcycle body frame, to reduce vehicle width.

Abstract: An engine output control system includes an engine ECU having a fundamental ignition timing map, a fundamental fuel injection quantity map, a target throttle angle determination unit for determining a target throttle angle of an exhaust control valve, an exhaust control valve diagnosis unit for diagnosing operation of the exhaust control valve, an ignition timing map to be used during an abnormality for determining fundamental ignition timing when the exhaust control valve operates abnormally, and an abnormal fuel injection thinning-out table for determining a reduced rate of fuel injection when the exhaust control valve has been diagnosed as abnormal. The exhaust control valve driving unit supplies a driving current to an actuator in such a manner that the target throttle angle notified by the engine ECU coincides with actual valve throttle angle. The system is capable of obtaining sufficient traveling performance even when an exhaust control valve has is operating abnormally.

Abstract: When a kind of statistic information to be extracted depends on a user policy and the kind of the statistic information is unable to be preliminarily specified, in order to provide a statistic information extraction method and device which can accommodate thereto, a table for retrieving a pattern to which a user policy is reflected is set, the pattern is retrieved from received packets based on the table, and statistic information of the pattern retrieved is stored. Also, whether or not the received packet should be made a learning object is set in the table, and a pattern unable to be retrieved is added to the table if the received packet is set as the learning object in the table when the pattern is unable to be retrieved.

Abstract: In a bandwidth control device and method in a case where a physical line is used as a plurality of virtual leased lines, a packet length correction value table associates flow identifying information of a packet with a packet length correction value for correcting a length of the packet measured with a specific standard to a packet length corresponding to the flow identifying information; and a bandwidth calculating portion corrects a length of the received packet identified based on the low identifying information, based on the packet length correction value corresponding to the flow identifying information by referring to the packet length correction value table, and determines a transmission timing of the received packet by calculating a bandwidth based on the corrected packet length.

Abstract: An exhaust control apparatus for a motorcycle includes an exhaust collection pipe, which collects and combines exhaust gas from a plurality of exhaust pipes, and an exhaust valve. The exhaust valve is operatively attached to the collection pipe and controls flow of exhaust gas within the collection pipe. A pivot shaft of the exhaust valve is situated at an angle and is displaced from the centers of the exhaust pipes, such that the shaft is not aligned with the centers of the exhaust pipes. This arrangement of the pivot shaft provides a smooth, non-turbulent flow of exhaust gas, and reduces impedance to the flow of exhaust gas. The exhaust control apparatus may be mounted to reside within a recess formed in a motorcycle body frame, to reduce vehicle width.

Abstract: An engine output control system includes an engine ECU having a fundamental ignition timing map, a fundamental fuel injection quantity map, a target throttle angle determination unit for determining a target throttle angle of an exhaust control valve, an exhaust control valve diagnosis unit for diagnosing operation of the exhaust control valve, an ignition timing map to be used during an abnormality for determining fundamental ignition timing when the exhaust control valve operates abnormally, and an abnormal fuel injection thinning-out table for determining a reduced rate of fuel injection when the exhaust control valve has been diagnosed as abnormal. The exhaust control valve driving unit supplies a driving current to an actuator in such a manner that the target throttle angle notified by the engine ECU coincides with actual valve throttle angle. The system is capable of obtaining sufficient traveling performance even when an exhaust control valve has is operating abnormally.

Abstract: A load balancing system provided with at least one first load balancing apparatus for analyzing higher layer information included in a received packet to generate attribute information of the received packet and transmitting the packet given that attribute information, a second load balancing apparatus for determining an optimal server for allocation of the packet based on traffic status information of packets and the attribute information sent from the at least one first load balancing apparatus and transmitting the packet to the server, and, optionally, a third load balancing apparatus for allocating the received packet to any of a plurality of first load balancing apparatuses, whereby it becomes possible to reduce as much as possible the intercommunication required for load balancing in the system and to obtain a performance proportional to the number of load balancing apparatuses.

Abstract: A packet switch apparatus is disclosed which can send a packet to paths at the respective, different output bit rates thereof without degrading the efficiency of used of a common memory. A storing part stores a packet in a free space of the common memory. An enqueuing part enqueues a pointer indicating the stored packet to queues corresponding to paths to which the packet is scheduled to be sent. A sending part dequeues the enqueued pointer for each of the queues corresponding to the paths and sends the packet indicated by the dequeued pointer to the paths corresponding to the queues at the respective transmission bit rate thereof. A discarding part discards, on a queue basis, pointers from a head thereof in which it is determined that the number of pointers enqueued exceeds a predetermined threshold value.