Patent application number | Description | Published |
20080316924 | SHAPING DEVICE AND ROUTER DEVICE - A shaping unit includes FIFOS for accumulating a packet which is so designed as to arrive at a destination address. A packet (ordinary packet), which has one destination address, is accumulated into the FIFO corresponding to the one destination address. A packet (virtual multicast packet), which will be copied in the downstream of the shaping unit then to arrive at two destination addresses, is accumulated into either of the FIFOS. A packet read unit transmits the virtual multicast packet, which is read from either of the FIFOs, and the ordinary packet, which is read from the one of the FIFOS, to a multiplexing circuit in such a manner that total bandwidth of both packets is controlled. | 12-25-2008 |
20090109985 | Packet forwarding device - A power-saving packet forwarding device realizing electric power that accords to the number of lines in which communication is performed and a traffic volume inputted from the lines. A header processing unit with which the packet forwarding device is equipped has a plurality of packet processing circuits for performing a packet processing. A line number decision circuit monitors the number of lines in which communication is performed and a traffic volume inputted from the line, and decides presence or absence of an operation of a packet processing circuit. Based on this decision result, a power supply and a clock of the packet processing circuit that does not need to operate are interrupted, and accordingly power saving of the packet forwarding device is realized. | 04-30-2009 |
20090252055 | PACKET FORWARDING DEVICE - A packet forwarding device changes packet transfer performance according to a packet load, and ensures communication quality of an important packet while transfer performance is made minimum to suppress power consumption. The packet forwarding device includes a measuring section to measure the packet load for each packet importance degree, an estimation section to estimate a future packet load for each importance degree based on the measurement result, a performance determination section to determine performance for an operation based on the estimated load, which are provided in, for example, a traffic estimation/performance determination section. Reduction in the power consumption and assurance of the communication quality of the important packet are realized by a minimum performance determination based on an important packet estimation load in the performance determination section and a preferential process of the important packet in the packet forwarding device. | 10-08-2009 |
20100157830 | PACKET TRANSFER METHOD, PACKET TRANSFER DEVICE, AND PACKET TRANSFER SYSTEM - An edge router measures a traffic volume inputted into a network, and the measurement result is notified to a network management server. If the network management server judges that the notified traffic volume is “smaller” than a capacity of a second core router, it will direct a first core router to shift to a power saving mode. The first core router notifies the edge router of the shift to the power saving mode, and the edge router updates a routing table so that the packet to the first core router may be bypassed to the second core router. The first core router shifts to the power saving mode that does not perform packet transfer, and reduction in electric power is realized. | 06-24-2010 |
20100229016 | ASSESSING CONDITIONS OF POWER CONSUMPTION IN COMPUTER NETWORK - A network system forms a computer network, and includes: a collecting unit; a calculating unit; and a display unit. The collecting unit collects power consumption information from a connecting device. The power consumption information shows power consumption of the connecting device. The calculating unit calculates power consumption of the computer network based on the collected power consumption information. The calculated power consumption is itemized into constituent units based on a configuration of the computer network. The display unit displays the calculated power consumption. | 09-09-2010 |
20110202658 | INFORMATION SYSTEM, APPARATUS AND METHOD - A system permitting alteration of the information processing position, where an existing information system is used, while minimizing alterations in configuration or the like, is to be provided. Intelligent nodes each having an information processing section and any desired address altering section are arranged on boundaries of a network where packets are likely to pass. This node has a flow table for recognizing as a flow a group of packets transmitted from each user's terminal, a flow status table for determining the connection state and the next destination address or the final destination address of each flow, and a module to observe the loaded state of its own information processing function. It rewrites the destination address of any flow not in a connection-established state in the flow status table to a less loaded one out of its own information processing function section or external information processing apparatus. | 08-18-2011 |
20120008623 | Packet forwarding device - A power-saving packet forwarding device realizing electric power that accords to the number of lines in which communication is performed and a traffic volume inputted from the lines. A header processing unit with which the packet forwarding device is equipped has a plurality of packet processing circuits for performing a packet processing. A line number decision circuit monitors the number of lines in which communication is performed and a traffic volume inputted from the line, and decides presence or absence of an operation of a packet processing circuit. Based on this decision result, a power supply and a clock of the packet processing circuit that does not need to operate are interrupted, and accordingly power saving of the packet forwarding device is realized. | 01-12-2012 |
20120314608 | INFORMATION AND COMMUNICATION PROCESSING SYSTEM, METHOD, AND NETWORK NODE - In a distributed information communication processing system in which a plurality of information communication devices provides a service through a network, response speed, electric power consumption, and further reliability are improved. The distributed information communication processing system which provides various services is configured by associating an entrance node (EN) which executes filtering near sensors, actuators, and terminals being information sources, an intelligent node (IN) which changes an information processing position and executes information processing and communication processing instead of a data center (DC), and a management node (MN) which manages these nodes. Thereby, real time type information processing can be realized. | 12-13-2012 |
20130103831 | ASSESSING CONDITIONS OF POWER CONSUMPTION IN COMPUTER NETWORK - A display apparatus including: a collecting unit that collects power consumption information, wherein the power consumption information shows power consumption of a connecting device, and the connecting device interconnects a plurality of communication paths in a computer network; and a display unit that displays power consumption of the computer network, based on the power consumption information and constituent units based on a virtual network which is configured virtually on the computer network. | 04-25-2013 |
20130159806 | PACKET COMMUNICATION APPARATUS AND PACKET COMMUNICATION METHOD - Packet communication apparatus connects plural LANs to each other, in termination of a WAN that conducts data communication using handshake communication protocol. Apparatus buffers data packets between the LANs, and transfers, as a proxy, response packets and data packets to a terminal device. The apparatus stops transmission of data packets belonging to an arbitrary packet flow when the reception of the response packets belonging to the packet flow from the WAN is ceased for a network outage detection time or more set, while transmitting data packets belonging to the arbitrary packet flow. The apparatus retransmits a first data packet whose corresponding response packet is not received, belonging to the packet flow immediately after the data packet transmission stops, and retransmits all data packets whose corresponding response packets are not received, belonging to the packet flow, when receiving the response packets from the WAN. | 06-20-2013 |
20130229916 | COMMUNICATION DEVICE AND COMMUNICATION SYSTEM - When a proxy device is used between a transmission terminal and a reception terminal, receives final data from the transmission terminal, and fails immediately thereafter, a situation is avoided where transmission is completed in the transmission terminal, but reception is not completed in the reception terminal. There is provided a means for not returning ACK when a data packet is received in a state in which there is no data which waits for ACK and transmission of which is in progress, and there is no data which waits for arrangement and reception of which is in progress in the proxy device, for returning ACK for data received one step before when a data packet is received in a state in which there is data which waits for ACK and transmission of which is in progress, or there is data which waits for arrangement and reception of which is in progress. | 09-05-2013 |