| Patent Number |
Title Of Patent |
Date Issued |
| 7593399 |
Frame construction method, frame construction device and data transfer system capable of accommo |
September 22, 2009 |
| A layer 1 network frame is disclosed that includes data of a layer 2 frame. A header of the layer 1 frame header includes: a packet length field to indicate a size of a payload portion of the layer 1 frame, a priority field to indicate a priority of the layer 1 frame, a protocol fiel |
| 7564844 |
Datagram relaying apparatus with load distributing function |
July 21, 2009 |
| A datagram relaying apparatus includes a plurality of protocol terminating units, and a destination determining processor. The destination determining processor includes a path selecting section which determines a transfer destination route for a stream of packets received from any of |
| 7324511 |
Device, method and system for transferring frame |
January 29, 2008 |
| In between network devices interconnected by plural optical channels, logical paths are defined according to upper traffic and also priority of the traffic. The network device includes: a frame forming section for reading user packets out of a buffer section composed of plural buffers |
| 7298694 |
Apparatus and method for GFP frame transfer |
November 20, 2007 |
| To allow performance monitoring of the end-to-end path from the Ingress node to the Egress node of the GFP network by an FCS (Frame Check Sequence) check in a GFP (Generic Frame Procedure) frame, the FCS generation target area is set in the payload field of the GFP frame, no FCS reca |
| 7126950 |
Method and system for transmission and reception of asynchronously multiplexed signals |
October 24, 2006 |
| A storage circuit defines a first field for storing first header bits of a first payload signal of a first data unit, a second field, and a third field for storing the first payload signal. The first header bits are equal in number to second header bits of a second payload signal of a |
| 7050455 |
Frame construction method, frame construction device and data transfer system capable of accommo |
May 23, 2006 |
| A layer 1 frame, capable of accommodating data of any protocol selected from an STM (Synchronous Transfer Mode) signal, ATM (Asynchronous Transfer Mode) cells, a primary IP (Internet Protocol) packet and a best effort IP packet in a common frame format, is constructed by an edge node |
| 6976256 |
Pipeline processing type shaping apparatus and its method |
December 13, 2005 |
| A pipeline processing type shaping apparatus and method in which strict shaping processing can also be implemented for a connection at various speed by adding a simplified circuit configuration. A cache portion is provided that links with the processing of a pipeline processing portion, |
| 6970478 |
Packet transfer method and apparatus, and packet communication system |
November 29, 2005 |
| In a packet transfer method, a packet to be transferred to a destination access network is generated and transmitted to a transmission-source packet transfer apparatus connected to the transmission-source access network. The packet is converted into a superpacket having a length n ti |
| 6947427 |
Transmission method and network system for accommodating a plurality of kinds of traffic in a co |
September 20, 2005 |
| A transmission method and a network system can accommodate STM, ATM and IP in a single network by newly proposing a frame network to be used in common in physical layer and data link layer. The transmission method includes transmitting a plurality of packets in multiplexing manner, which |
| 6940853 |
Datagram relaying apparatus with load distributing function |
September 6, 2005 |
| A datagram relaying apparatus includes a plurality of protocol terminating units, and a destination determining processor. The destination determining processor includes a path selecting section which determines a transfer destination route for a stream of packets received from any of |
| 6754215 |
Packet scheduling device |
June 22, 2004 |
| In the packet scheduling device, the output class selection part is made to conduct the selective output of priority class, based on the weight count value calculated from a weight value corresponding to minimum guarantee bandwidth for each priority class and the amount of packet accumul |
| 6738352 |
Transfer destination determining process apparatus |
May 18, 2004 |
| A transfer destination determining apparatus and method performing a load distribution in a network, where a plurality of transfer destination subjects are present as a transfer destination of a datagram, while the same collected flows are transferred to the same transfer destinations, |
| 6678474 |
Lightwave network data communications system |
January 13, 2004 |
| A lightwave network data communications system having such an architecture that routing operation within a lightwave network is simplified, and a high-speed transfer process is attained in a large-scale basic network utilizing a wavelength division multiplexing (WDM) technology which |
| 6580714 |
Concentrator type ATM switch for an ATM switching system |
June 17, 2003 |
| An ATM switching system includes a plurality of (m) small-scale n.times.n ATM switch modules, and a coupling module for coupling the ATM switch modules to one another to implement a large-scale ATM switching system. The coupling module includes m concentrators corresponding to the m ATM |
| 6546422 |
Caching of network contents by packet relays that determine cache priority utilizing contents ac |
April 8, 2003 |
| A caching method for caching network contents of a packet transfer network including a packet relay for relaying accesses of clients to servers supplying contents, and a network contents cache device are disclosed. Accesses from the clients to the servers are monitored by the said packet |
| 6512616 |
Optical packet switch |
January 28, 2003 |
| An optical packet switch uses electric circuits to implement input and output sections of an optical switch that performs packet switching. Retiming of packet data in the output section is facilitated to reduce the scale of the circuitry. In the input section a packet-data signal and a |
| 6452908 |
Route searching circuit and communication apparatus using the same |
September 17, 2002 |
| A communication control apparatus includes an input and output unit responsive to reception of a packet, for generating a search request and a destination address of the packet to receive a resultant route data, and for transmitting the packet based on the resultant route data. A memory |
| 6424620 |
Congestion control system capable of detecting congestion occurring in an asynchronous transfer |
July 23, 2002 |
| A congestion control system comprises an average flowing speed measuring unit for measuring average flowing speed of a transfer packet, a congestion detecting unit for detecting congestion caused by outside blocking based on the average flowing speed, a permissible flowing speed calc |
| 6330242 |
Loose source routing method of IP packet on ATM network |
December 11, 2001 |
| A loose source routing method is provided to transfer an IP packet from a transmission source gateway to a transfer destination gateway by way of ATM nodes, which are freely designated. At the transmission source gateway, the IP packet given from a user LAN is dissolved into ATM cells |
| 6314098 |
ATM connectionless communication system having session supervising and connection supervising fu |
November 6, 2001 |
| In an ATM connectionless communication system for delivering connectionless datagram in the form of sessions through an ATM network, each one of multiple edge units is connected to a user network where quality-of-service (QoS) sessions and No-QoS sessions are mixed. Each of the edge |
| 6208653 |
Method and apparatus for controlling a flow between terminals in an ATM network |
March 27, 2001 |
| The present invention provides a gateway unit which comprises a detecting unit for detecting the congestion from an RM cell from the ATM cell, for discriminating a TCP data gram (TCPDG) from a packet received during the congestion and for acquiring a sequence number of the TCPDG, a sendi |
| 6201810 |
High-speed routing control system |
March 13, 2001 |
| In a high-speed routing control system, plural path candidates each leading to a destination node are selected on the basis of physical connection information of links connecting respective nodes in a path candidate selection unit 11, and a path candidate containing no congestion-occurri |
| 6137798 |
Connectionless network for routing cells with connectionless address, VPI and packet-identifying |
October 24, 2000 |
| In a connectionless communication system, a number of interworking units are provided for accommodating local area networks. At the internetworking units, a packet from the local area networks are segmented into cells for transmission to an ATM network. The cells contain a connectionless |
| 5764637 |
STM/ATM converter |
June 9, 1998 |
| An STM/ATM converter for converting time-slot data in STM frames to ATM cells, which allows channel assignment on the STM transmission line to be flexible. In a writing operation for assembling the ATM cell, each byte data of STM frame arriving is written into a selected idle cell block |
| 5742600 |
Multiplex ATM/STM converter for structured data |
April 21, 1998 |
| The disclosed device allows de-ceiling of ATM cells in structured data transmission according to ITU-Telecommunication Recommendation I. 363, reproduction of a plurality of STM frames represented at a speed of 64 kbps.times.n (n=any natural number), and moreover, discloses an archite |
| 5469543 |
Policing circuits arranged in matrix array for selectively transferring virtual path identifier |
November 21, 1995 |
| In a policing arrangement for an ATM network, every incoming cell is stored in a cell buffer and a virtual path identifier (VPI) contained in the cell is extracted and translated to a corresponding one of a set of threshold values. Policing circuits of a matrix array are connected column |
| 5450440 |
Monitor system for digital communication apparatus |
September 12, 1995 |
| In a monitor system in a digital communication apparatus including communication processing blocks on transmission paths of digital data, test data inserting units and data monitor units are arranged such that a monitor interval for the monitor operation in a block overlaps with a mo |
| 5414415 |
Cross-connect apparatus capable of avoiding a superfluous detour route therein |
May 9, 1995 |
| In a cross-connect apparatus for use in selectively connecting a plurality of input transmission paths to a plurality of output transmission paths, each of the input and the output transmission paths is divided into first through m-th groups each of which is composed of first through n-t |
| 5394408 |
Policing control apparatus |
February 28, 1995 |
| A policing control apparatus having a cell input terminal receiving asynchronous transmission communication network cells; a policing circuit coupled to the input terminal for policing transmission of cells according to policing information; a cell output terminal from the policing circu |
| 5337307 |
Method of tracing virtual path operation information and apparatus applied thereto |
August 9, 1994 |
| Virtual path operation information of each of the stations of an synchronous transfer mode telecommunications network is traced using OAM cells. OAM cells used for operation and maintenance control of the asynchronous transfer mode telecommunication network have a pointer indicative |
