Patent application number | Description | Published |
20080279195 | Multi-plane cell switch fabric system - Disclosed herewith is a multi-plane cell switch fabric system in which each switching unit functions asynchronously with others. The system executes distribution/restoration operations without lowering the switching capacity to reorder cells that arrive in random order from a plurality of switches just as they were in original flows and packets respectively with a small hardware capacity. In the system, the distribution unit divides each variable length packet addressed to the same destination into fixed length cells and sends those divided cells by a unit of integer multiple of the number of switches. On the other hand, the reordering unit, while holding cells that arrive in random order from each switching unit (switching units | 11-13-2008 |
20090129393 | MULTI-PLANE CELL SWITCH FABRIC SYSTEM - Cells which arrive in random sequence from the asynchronously operating exchange parts are restored into the original by a small amount of hardware. Distributing parts as inputs of a switch fabric manage serial numbers continuous for each destination. The distributing part divides an inputted variable length packet into fixed length cells, adds serial numbers corresponding to destinations to the cells, and outputs the cells to the exchange parts. The respective exchange parts deliver the cells to the objected destinations. Alignment parts as outputs of the switch fabric classify the reception cells by the number of the distributing part, and compare an expected serial number managed by the alignment part with a serial number of the destination (alignment part) of the reception cell. An identical one is stored in an aligned FIFO queue, and cells of from a packet start cell to a packet end cell are taken out. | 05-21-2009 |
20090198864 | NETWORK SWITCH AND METHOD OF SWITCHING IN NETWORK - A network switch with a plurality of crossbar switches that is available to suppress increase in the circuit scale is provided. The network switch has: the plurality of crossbar switches that transfer unit data in a specified format; a receiving side transfer unit that transfers data received from a network to the plurality of crossbar switches in the unit data basis; and a plurality of transmitting side transfer units that transmit data transferred from the plurality of crossbar switches to the network. The receiving side transfer sets a consecutive serial number to the unit data in transfer sequence, and distributes the unit data to the plurality of crossbar switches. Each of the plurality of transmitting side transfer units has a plurality of queues for the respective crossbar switches that stores the transferred unit data, and extracts the unit data with smallest serial number of the unit data stored in the queues when all of the queues store the unit data. | 08-06-2009 |
20090252168 | MULTI-PLANE CELL SWITCH FABRIC SYSTEM - A multi-plane cell switch fabric system prevents a decrease of the effective switching capacity when switching the variable-length packets. Distribution units classify input variable-length packets for each address, arranges the packets by a first division length unit, divides the packets into fixed-length cell payloads by a second division length unit that is an integer multiple being twice or more as large as the first division length unit, and forms a fixed-length cell by providing destination information, a source ID, a sequential number, and packet head tail information to each of the cell payloads. The cells are distributed to all the switching units one by one whenever the cells are collected to be the same number as the plural switching units. The reordering units classify the cells, reorder the sequential number in an original order, and reassemble the packets by the packet head tail information of the cell. | 10-08-2009 |
20100021160 | OPTICAL ACCESS SYSTEM, OPTICAL SWITCHING UNIT AND OPTICAL LINE TERMINAL - Provided is an optical access system, including: an optical line terminal, a plurality of optical network units and an optical switching unit. The optical line terminal sends to the optical switching unit a control frame including a switching time when the optical switching unit is to make a switch from one of the optical communication paths between the optical line terminal and the plurality of optical network units to another, and an identifier of an optical communication path to which the switch is made in order to switch the optical communication paths between the optical line terminal and the plurality of optical network units. The optical switching unit switches the optical communication paths between the optical line terminal and the plurality of optical network units based on the switching time and the identifier of the optical communication path after switching which are included in the control frame. | 01-28-2010 |
20100104286 | OPTICAL ACCESS SYSTEM AND OPTICAL LINE TERMINAL - Provided is an optical access system comprising: an optical line terminal connected to another network; a plurality of optical network units, each connected to a user terminal; and at least one of an optical switching unit and an optical splitter, which is installed between the optical line terminal and the plurality of optical network units. The optical line terminal allocates a length of time to a discovery phase for detecting the plurality of optical network units, and a length of time to data transmission phases for transferring data from the plurality of optical network units; and changes a ratio of the length of time of the discovery phase to the length of time of the data transmission phases so that the length of time of the discovery phase is shortened in the case where a number of the optical network units that are registered in the optical line terminal increase. | 04-29-2010 |
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 |
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 |