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7606234 |
Multi-stream acknowledgement scheduling
Acknowledgement packets and data packets of multiple streams are reordered for transmission in order to gain good overall utilization of both uploading and downloading links. Durations of various...
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7602797 |
Method and apparatus for request/grant priority scheduling
In accordance with at least one embodiment of the present invention, a method and apparatus for scheduling traffic in a communications node is provided. Line cards request communication...
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7596147 |
Apparatus and method for fractional processing of cells in a communications system
At least one cell in a communications system, from a network side, is caused to be stored into a cell buffer bulk memory. Responsive to detecting a predetermined fullness condition of a timeslot...
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7558197 |
Dequeuing and congestion control systems and methods
A system provides congestion control in a network device. The system includes multiple queues, a dequeue engine, a drop engine, and an arbiter. The queues temporarily store data. The dequeue engine...
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7554914 |
System and method for adaptively balancing network traffic over router output ports
A method and system for determining an output port upon which to transmit a packet in a router having a plurality of output ports adapted to be coupled with an adjacent router. In one embodiment, a...
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7548547 |
Controlling the transfer of terminal server data
The present invention extends to methods, systems, and computer program products for controlling the transfer of terminal server data. In some embodiments, contending request to send terminal...
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7545808 |
Memory organization in a switching device
A network device switches variable length data units from a source to a destination in a network. An input port receives the variable length data unit and a divider divides the variable length data...
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7486686 |
Method and apparatus for scheduling data on a medium
A bandwidth guaranteeing, BW, process transmits data from a first group of queues to a medium. When none of the queues of the first group wishes to transmit data via the bandwidth guaranteeing...
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7474642 |
Signaling reliability in using high-speed shared packet data channel
The present invention provides a priority scheme and a data rate reduction method to increase the reliability of the signaling messages on a shared packet data channel. Signaling messages and...
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7453898 |
Methods and apparatus for simultaneously scheduling multiple priorities of packets
Methods and apparatus are disclosed for simultaneously scheduling multiple priorities of packets, such as in systems having a non-blocking switching fabric. In one implementation, the maximum...
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7447229 |
Method for providing prioritized data movement between endpoints connected by multiple logical channels
A data network and a method for providing prioritized data movement between endpoints connected by multiple logical channels. Such a data network may include a first node comprising a first...
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7440403 |
Method and software for calculating rate constraints
A method for determining and enforcing rate constraints on process flows in a network, the method comprising receiving at least one process flow. A flow rate vulnerability (FRV) factor and a...
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7428239 |
Apparatus and method for priority queuing with segmented buffers
Apparatus and methods for efficient queuing and dequeuing using segmented output buffers comprising sub-buffers and priority queues. Output buffers are monitored for empty sub-buffers. When a newly...
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7424026 |
Method and apparatus providing continuous adaptive control of voice packet buffer at receiver terminal
Disclosed is a device, a computer program and a method to receive and buffer data packets that contain information that is representative of time-ordered content, such as a voice signal, that is...
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7376140 |
System and method for assignment of ATM virtual circuits to queues in a DSLAM
A method for distributing digital subscriber line (xDSL) data traffic includes receiving xDSL traffic at a DSLAM including a plurality of input ports and a plurality of output queues. Each input...
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7352695 |
Switch and a switching method
A switch at a transmission end of a system including a number of memory devices defining queues for receiving traffic to be switched, each queue having an associated predetermined priority...
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7313147 |
Network device and its data transmission method
A network device for transmitting data of a host system to a network including a buffer for storing the data, a first transmission interface providing a control signal to the host system, and a...
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7298755 |
Apparatus and method for communicating with a network and for monitoring operational performance of the apparatus
An apparatus for communicating with a network comprises a data packet pipeline and a monitoring element. The data packet pipeline is configured to transfer data between a buffer and a network...
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7292594 |
Weighted fair share scheduler for large input-buffered high-speed cross-point packet/cell switches
A switching fabric connects input ports to output ports. Each input has an input pointer referencing an output port, and each output has an output pointer referencing an input port. An arbiter...
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7277446 |
Communication of digital data over a wireless transmission medium
Data packets are received at a communications node. Each of the received data packets is associated with one of a set of different service classes. Packets corresponding to the received data...
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7272150 |
System and method for shaping traffic from a plurality of data streams using hierarchical queuing
A system for shaping traffic from a plurality of data streams comprised of a first queuing stage configured to shape traffic from the data streams and having a plurality of shaping queues; and a...
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7272149 |
Bandwidth allocation systems and methods
A system for shaping traffic from a plurality of data streams includes a queuing stage having a plurality of first-in, first-out shaping queues, the queuing stage being configured to classify...
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7233599 |
Interface device with stored data on transmission lines characteristics
The present invention relates to high speed communications, in particular, to an interface device between a transmitting device and a receiving device of a transmission system, wherein the...
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7197044 |
Method for managing congestion in a network switch
A method for managing congestion in a stack of network switches includes the steps of receiving an incoming packet on a first port of a network switch for transmission to a destination port and...
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7180862 |
Apparatus and method for virtual output queue feedback
A method of providing virtual output queue feedback to a number of boards coupled with a switch. A number of virtual queues in the switch and/or in the boards are monitored and, in response to one...
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7177280 |
Data transfer processing apparatus, data transfer method, and data transfer program
This invention is intended to realize with ease flow control and quantization error reduction in a data transfer operation executed via the IEEE 1394 serial bus. A FIFO once holds data supplied...
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7158530 |
Real time communications of musical tone information
A musical tone data communications system having a unit for generating MIDI data of a musical performance by a player, a unit for transmitting the generated MIDI data over a communications network...
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7145868 |
Congestion management in a multi-port shared memory switch
A method and system for detecting and controlling congestion in a multi-port shared memory switch in a communications network. The proposed congestion management scheme implements a local and a...
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7142552 |
Method and system for priority enforcement with flow control
A method and system for controlling a plurality of pipes in a computer network, including at least one processor for a switch, the at least one processor having a queue, the plurality of pipes...
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7123622 |
Method and system for network processor scheduling based on service levels
A system and method of moving information units from an output flow control toward a data transmission network in a prioritized sequence which accommodates several different levels of service. The...
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7075934 |
Method and apparatus for hierarchical bandwidth distribution in a packet network
A scheduler apparatus provides bandwidth guarantees to individual data packet flows as well as to aggregations of those flows (referred to as “bundles”) in a completely transparent manner,...
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7050445 |
System and method for dynamic allocation of capacity on wireless networks
A wireless communication system is described for allocating limited network access according to priorities designated for requested transactions of wireless communications. The wireless network has...
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RE39103 |
Timing reference for scheduling data traffic on multiple ports
Data traffic such as cell streams in an ATM communication network frequently contain data destined for multiple output ports having different transmission data rates. In order to accurately...
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7046688 |
Packet scheduler
There is provided a packet scheduler for managing output awaiting packets stored in a plural of queue blocks each having a weighting coefficient settled based on an output guaranteeing bandwidth,...
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7024158 |
Broadband communication satellite
A satellite system is provided that includes a receive antenna system to receive one of C-band and/or Ku-band signals and a transmit antenna system to transmit one of C-band and/or Ku-band signals....
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7023857 |
Method and apparatus of feedback control in a multi-stage switching system
The present invention focuses on the aggregation of flows belonging to different classes of non-guaranteed-delay traffic into a single FIFO queue in a downstream stage of the multi-stage switch....
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7020080 |
Method and apparatus for prevention of flow starvation with weighted fair queuing
Method and apparatus for queuing packets are disclosed. In one aspect, a method may comprise assigning each packet a first value; dynamically assigning each packet a second value; and queuing each...
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7006513 |
Method and system for pipelining packet selection
A method for selecting packets comprises pipelining execution of packet selection processes so that execution of each of the packet selection processes occurs at different levels of a scheduling...
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6970457 |
Data transmission apparatus for transmitting ATM data streams
A data reception unit for receiving a plurality of data streams over a data channel, the data streams being received as amounts of data and each amount of data comprising a data portion including...
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6963571 |
Systems and methods for merging packet lookup results
A multiport network device includes output port logic, priority logic, a memory, and memory logic. The output port logic generates output port data that identifies output ports to transmit received...
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6952740 |
Apparatus and method of maintaining a route table
An apparatus and method of maintaining a route table within a network device lists data identifying specific routes of interest that have changed. The routes of interest may be within a given set...
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6947437 |
Programmable output queues in a network device
A network device that controls the communication of data frames between stations includes a number of receive ports that receive data frames from the stations and a number of output ports that...
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6940815 |
Priority control method
Disclosed is a priority control method using a single output queue wherein an output priority of a packet not undergoing convergence is improved by exchanging the order of a packet undergoing...
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6937607 |
Random early discard for cell-switched data switch
A congestion control method and apparatus in a cell-switched data switch. The switch attaches a tag with a discard processing indicator, such as a particular random number, to all cells belonging...
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6876663 |
Switching system
A data switching device has ingress routers and egress routers interconnected by a switching matrix controlled by a controller. Each ingress router maintains one or more virtual output queues for...
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6865155 |
Method and apparatus for transmitting data through a switch fabric according to detected congestion
A switching system includes a switch fabric that includes groups of buffers for each port interface device that communicates with external communication devices through an Ethernet plane. The port...
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6842423 |
Systems and methods for priority-based flow control masking
A system provides flow control in a network device. The system includes output queues that correspond to the output ports of the network device, a mask register, a first logic device, and a second...
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6839354 |
Scheduling circuit and scheduling method for dealing with service classes with differing priorities
The assignment result reception circuit 11 receives the accumulation assignment result from the external portion, and sends the already-assigned input port and output port information to the...
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6816492 |
Resequencing packets at output ports without errors using packet timestamps and timestamp floors
Methods and apparatus are disclosed for propagating timestamp floors throughout a packet switching system and using the timestamp floors received at a first component of the packet switching system...
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6754742 |
Queue management system having one read and one write per cycle by using free queues
The invention relates to a buffer memory, method and a buffer controller for queue management usable in an ATM switch. An object of the invention is to achieve a high frequency throughput of data...
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