Patent application number | Description | Published |
20090175287 | Packet switch - A virtual output queuing controlling device in an input buffering switch with a virtual output queuing technique includes a specialized class for CBR traffic, and a connection request generation section that makes a connection request for a switch scheduler, which can execute a three-step priority control. The connection request generation section makes the connection request of the specialized class for CBR traffic prior to the connection request of the other classes for the switch scheduler. | 07-09-2009 |
20090282105 | P2P DATA DELIVERY SYSTEM, P2P DATA DELIVERY METHOD AND P2P DATA DELIVERY PROGRAM - Since a shared public data delivery module makes a response to a data query to other data delivery modules or other shared public data delivery modules; or to a query from other data delivery modules or other shared public data delivery modules instead of the data delivery module, the data delivery module needs not to directly make response to the data query, and it is hence possible to reduce load imposed on data delivery modules participating in the P2P data delivery system. For example, for a data request issued from a data delivery module, an adjacent shared public data delivery module acquires data substitutionally; it is hence possible to reduce the transfer network amount between the module having issued the data request and other data delivery modules and between the module having issued the data request and other shared public data delivery modules not adjacent thereto. | 11-12-2009 |
20090323695 | TWO-DIMENSIONAL PIPELINED SCHEDULING TECHNIQUE - A scheduler allowing high-speed scheduling scalable with the number of input and output ports of a crosspoint switch and suppressed unfairness among inputs is disclosed. The scheduler includes an M×M matrix of scheduling modules, each of which schedules packet forwarding connections from a corresponding input group of input ports to selected ones of a corresponding output group of output ports based on reservation information. A diagonal modulo pattern is used to determine a set of M scheduling modules to avoid coming into collision with each other. Each determined scheduling module performs reservation of packet forwarding connections based on current reservation information and transfers updated reservation information in row and column directions of the M×M matrix. | 12-31-2009 |
20100325157 | SYSTEM FOR GENERATING CHARACTER-STRING MATCHING FINITE AUTOMATION, ITS GENERATING METHOD, AND GENERATING PROGRAM - Disclosed is a system in which Aan NFA conversion meansunit | 12-23-2010 |
20110310746 | COMMUNICATION NETWORK MANAGEMENT SYSTEM AND METHOD AND MANAGEMENT COMPUTER - A management computer has: a storage unit in which a route information indicating a transfer route of frames in the communication network is stored; and a monitoring unit. The monitoring unit refers to the route information to transmit a frame to the transfer route and performs identification processing that identifies a location of a failure on the transfer route. First to N-th nodes (N is an integer equal to or more than 3) line up in order along the transfer route. The i-th node (i=1 to N−1) forwards a received frame to the (i+1)-th node, and the N-th node forwards a received frame to the management computer. In the identification processing, the monitoring unit sets at least one node between the first node and the N-th node as an insertion node. Then, the monitoring unit transmits a frame to the insertion node each, and identifies the location of the failure based on reception state of a frame from the N-th node. | 12-22-2011 |
20120020219 | Network system and congestion control method - A transmission terminal has a plurality of congestion control units (RPs) each controlling a frame transmission rate. A switch arranged between the transmission terminal and a reception terminal has a plurality of congestion detection units (CPs) each generating a congestion information notification frame addressed to the transmission terminal. A plurality of routes exist between the transmission terminal and the reception terminal. The management computer manages a correspondence relationship between the routes and the RPs, assigns any of the routes to a flow, selects a RP associated with a route assigned to the flow, and notifies the transmission terminal and the switch of the flow and the selected RP. When the switch receives a frame belonging to the flow, a CP associated with the selected RP generates the congestion information notification frame addressed to the selected RP. The transmission terminal transmits a frame belonging to the flow through the selected RP. | 01-26-2012 |
20120026891 | Communication network management system and method and management computer - A management computer includes a storage unit in which route information indicating a transfer route of frames in a communication network is stored; and a monitoring unit. First to N-th nodes (N is an integer not less than 2) line up in order along a transfer route. In identifying a location of failure on the transfer route, the monitoring unit transmits a state notification frame to the first node. The i-th node, when receiving the state notification frame, updates a forwarding table by adding the management computer to the forwarding destination and forwards the state notification frame to the (i+1)-th node. The i-th node, when receiving a check frame, forwards the check frame to the (i+1)-th node and the management computer by referring to the post-update forwarding table. The monitoring unit identifies the location of failure based on reception state of the check frame from the transfer route. | 02-02-2012 |
20120263038 | NETWORK SYSTEM AND FRAME COMMUNICATION METHOD - A network system has: a node performing transmission and reception of a frame based on FCoE (Fibre Channel Over Ethernet); a network; a controller performing management of the node and the network; and a gateway provided with respect to the node. The gateway determines whether a frame received from the node is a control frame or a data frame, forwards the control frame to the controller, and forwards the data frame to the network. The controller performs the management based on the control frame received from the gateway. The network transfers the data frame received from the gateway to a target node without through the controller. The controller comprises a flow management unit that manages a transfer route of the data frame in the network with respect to each flow. | 10-18-2012 |
20120269194 | REPEATING DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD AND RECORDING MEDIUM FOR RECORDING PROGRAM - A repeating device according to the present invention is connected with a communication device sending and receiving a packet via a network, for relaying the packet. The repeating device includes a destination determination unit for determining whether a destination of a received retransmission packet is within a communication system including the repeating device or outside the communication system and a retransmission control unit for performing retransmission control of the received retransmission packet, when a result of the determination shows a destination of the received retransmission packet is outside the communication system, and requesting retransmission control of the received retransmission packet to a transmission source of the received retransmission packet, when the result of the determination shows the destination of the received retransmission packet is within the communication system. | 10-25-2012 |
20130159415 | CONGESTION CONTROL SYSTEM, CONGESTION CONTROL METHOD, AND COMMUNICATION UNIT - A congestion control system is provided with a plurality of reaction points, each of which is configured to transmit a packet to a transmission destination; and a congestion point configured to receive the packets transmitted from the plurality of reaction points. When detecting congestion in itself, the congestion point samples each of the received packets based on a predetermined algorithm, and transmits a feedback message to the reaction point as a transmission source of the sampled packet. Each of the plurality of reaction points controls a target rate based on a reception situation of the feedback message, and sets the target rate to an initial value at an initialization timing which does not depend on the feedback message. | 06-20-2013 |
20130182711 | NETWORK SYSTEM AND FRAME COMMUNICATION METHOD - A network system has: a communication device configured to perform frame transmission and reception; a network configured to transfer the frame; a gateway connected between the communication device and the network; and a controller configured to perform management of the communication device and the network. The frame is classified into a control frame for communicating control information necessary for communication and a data frame for communicating data between communication devices. The gateway determines whether a frame received from a source communication device is the control frame or the data frame, forwards the control frame to the controller, and forwards the data frame to the network. The controller performs the management based on the control frame received from the gateway. The network transfers the data frame received from the gateway to a destination communication device without through the controller. | 07-18-2013 |
20130223450 | NETWORK SYSTEM AND FRAME COMMUNICATION METHOD - A network system has: a node performing transmission/reception of a frame based on FCoE; a network; a controller performing management of the node and the network; and a gateway provided with respect to the node. The frame is classified into a control frame and a data frame. The gateway determines whether a frame received from the node is the control frame or the data frame, forwards the control frame to the controller, and forwards the data frame to the network. The controller performs the management based on the control frame received from the gateway. The network transfers the data frame received from the gateway to a destination node without through the controller. The node has a retransmission control and reordering unit configured to perform retransmission control and reordering processing with respect to the data frame. | 08-29-2013 |
20130257012 | TWO-WHEELED MOTOR VEHICLE AND FRONT FORK FOR THE SAME - In a two-wheeled motor vehicle having a pair of right and left front forks for supporting a front wheel so that the front wheel is rotatable, a top bridge for supporting upper ends of the pair of right and left front forks, a handle post provided to the top bridge, and a bar-shaped handle secured to the hand post, the handle is provided above the front forks with respect to an axial line direction of the front forks, each front fork is provided with an air valve for sealingly filling air in the front fork and a projection on the upper surface thereof, and the projection is formed to be higher than the air valve. | 10-03-2013 |