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7535837 |
Optical packet transmission
A burst mode optical signal is transported as payload of a framed continuous bit-stream optical signal through an optical transport network. The optical bursts are all generated at a common nominal...
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7529267 |
Data transmissions in communication networks using multiple tokens
A network includes multiple nodes interconnected to form a ring topology. These nodes support data transmissions over the network using tokens. To send and receive data over the network, nodes may...
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7450850 |
Fiber and wire communication system
This invention provides a new architecture for a communication system between head-ends and end-users which expands bandwidth and reliability of the communication system. A mux-node receives...
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7369514 |
Source credit based fairness scheme
A method and apparatus for minimizing starvation of a station in a ring networked environment includes allocating a tax to each of the stations in the ring, and, for each packet that is to be...
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7355978 |
Method for implementing an OAM function by exchanging request-reply packets between stations of a RPR network, and corresponding packet frames
Described is a method extending the OAM functionality in the RPR networks through a new OAM loopback procedure of request-reply type together with the definition of a new RPR OAM loopback frame....
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7352765 |
Packet switching fabric having a segmented ring with token based resource control protocol and output queuing control
A packet switching fabric includes means forming a data ring, means forming a control ring, and means forming a plurality of data communication network links each having at least one network node...
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7328017 |
Resource negotiation in wireless communications networks and methods
A method in wireless communications networks including transmitting a radio resource assignment ( 520 ) to a wireless communications device in response to a request ( 510 ), transmitting radio...
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7315830 |
Method, system and computer program product for ordering merchandise in a global computer network environment
An electronic shopping server formats and sends an electronic page, having an integrated shopping basket with drag and drop functionality, from a virtual catalog to a plurality of clients. The...
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7130629 |
Enabling services for multiple sessions using a single mobile node
Methods and apparatus for performing registration on behalf of a session associated with a mobile node are disclosed. The mobile node composes a registration request including a NAI identifying a...
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7085898 |
Coherency management for a “switchless” distributed shared memory computer system
An apparatus and method is disclosed to manage storage coherency in a symmetric multiprocessing environment having a plurality of nodes, each of which contain a multitude of processors, I/O...
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7035279 |
Flow allocation in a ring topology
In a communication network that includes a plurality of nodes interconnected by links, a method for routing a data flow includes receiving a request to allocate one or more resources in the network...
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7009995 |
Method and a device for communication among equal-access stations of a ring-shaped serial fiber-optic bus
A method is described for communication among equal-access stations of a ring-shaped, serial fiber-optic bus and to a device for carrying out this communications method. One station, during a bus...
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6963564 |
Method and apparatus for synchronized slotted optical burst switching
A network ( 4 ) includes optical routers ( 19 ), which route information in fibers ( 10 ). Each fiber carries a plurality of data channels ( 16 ), carrying data in data bursts ( 28 ) and a control...
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6912231 |
Multi-broadcast bandwidth control system
A method and apparatus is provided for managing bandwidth and prioritizing different forms of data to be transmitted from a central hub or node to a plurality of ground stations. All data of all...
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6865188 |
Local communication system
Examples of local communication systems are disclosed, based on a ring of point-to-point links, providing for transport of fixed rate synchronous, fixed rate asynchronous data and variable rate...
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6865371 |
Method and apparatus for connecting devices via an ad hoc wireless communication network
A method for connecting two or more devices via a wireless communication channel is provided. In one embodiment, a method of connecting a first device to a second device includes the steps of...
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6834190 |
Controlling method and apparatus for transition between modes at traffic channel substrate in mobile communication system
An apparatus and method for controlling mode transition in a traffic channel substate in a mobile communication system. If a control hold mode should be transited to an active mode a BSC sets a...
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6785549 |
Method and apparatus for matching operating revisions of a mobile station and a base station in a wireless data communication system
Various method and apparatus provides for matching revision levels used by a mobile station ( 102-104 ) and a base station ( 101, 160 ) for establishing a communication link. The mobile station...
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6747985 |
Systems and methods for optimizing communications in an ethernet network
There is disclosed, for use in communication network, a network communications manager capable of controlling data transfers among a server and a plurality of client nodes coupled by a network...
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6654563 |
Fiber/wired communication system
A communication system between head-ends and end-users is provided which expands bandwidth and reliability. A concentrator receives communication signals from a head-end and forwards the received...
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6512779 |
Device for data transmission
The device for data transmission has a main station ( 3 ) and a number of terminals ( 1 ) and is provided with a device for coordinating operation in respective signaling data phases for downlink (...
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6496516 |
Ring interface and ring network bus flow control system
A ring interface is coupled to a current node in a ring network having a plurality of nodes and corresponding ring interface for each of said nodes. The ring interface includes a ring input port...
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6483843 |
Detecting and counting open ordered sets originating from an attached node port
A hub port in a loop network is disclosed. The hub port includes a hub data source, first and second detect circuits, and a processor. The hub data source supplies data to the hub port from the...
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6317415 |
Method and system for communicating information in a network
A communications system includes a plurality of network nodes including a first node having an interface unit. The interface unit includes a scheduler operable to schedule periodic transmission of...
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6259704 |
Digital transmission network
A digital transmission network comprises a plurality of transmission terminals and receiving terminals, which are all connected with each other by a transmission line of a metal cable or optical...
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6229816 |
Combining network and mechanism for allocating resources of such a network
A network for interconnecting network equipment units via a ring optimizes access to the ring by the equipment units in that the capacity of the ring is permanently shared between the various...
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5907554 |
Method for transmitting digital data
A method for transmitting digital data over data lines between subscribers forming data sources and data sinks and being disposed in a network having a ring structure and connecting a plurality of...
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5886992 |
Frame synchronized ring system and method
A device-implemented method of data communications in a communications network is provided. A particular node which has data information to send is granted a turn when an incoming request signal is...
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5786913 |
Optical TDMA ring network with a central transmitting and receiving device
An optical ring network with a plurality of network elements (#1, . . . , #N) is disclosed which contains only a single laser diode (2). This laser diode (2) is controlled to produce optical pulses...
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5784376 |
Adaptive burst multiplexing system using dynamic deadline computation
An adaptive burst multiplexing system using dynamic deadline computation serializes data from source units. It comprises interface circuits for accumulating in a buffer memory a quantity of data...
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5764392 |
Access control system for a multi-channel transmission ring
A node for an access control system for a multi-channel data transmission ring is disclosed. Access to a channel is controlled exclusively by one node, which is the only data receiving node...
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5757249 |
Communication system having a closed loop bus structure
A communication system having communicating devices coupled to a closed loop bus substantially reduces interconnect distances and corresponding signal propagation delays between the devices....
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5751714 |
Time division multiplex frame slot assignment system and method for interconnecting telephone stations on a token ring network
In a token ring network a periodic recirculating frame having a plurality of information carrying slots and a header section is used for enabling a plurality of telephone stations to exchange...
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5732211 |
Advanced data server having a plurality of rings connected to a server controller which controls the rings to cause them to receive and store data and/or retrieve and read out data
An advanced data server including an I/O ring coupled to at least one I/O access channel which provides data to the I/O ring or reads data out from the I/O ring; a disc array ring coupled to least...
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5706278 |
Deterministic network protocol
A deterministic network protocol for connecting critical sensors, actuators and computing elements on a bi-directional, time-multiplexed, fiber optic or other media data bus, such that critical...
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5657315 |
System and method for ring latency measurement and correction
A system and method for passively measuring and correcting ring latency on a token or FDDI ring includes generating bits and token frames in a defined pattern according to the token ring protocol....
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5654969 |
Arrangement in a communications network
In a communications network, first information items are transmitted synchronously and second information items asynchronously. The second information items are overlaid on the synchronously...
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5583855 |
Add/drop multiplexer apparatus
A communications network, having an SDH transmission line with four main channels, is provided, at four different tributary connection nodes, with respective add/drop multiplexer units for...
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5487067 |
Audio data communications
Data communications apparatus comprises a master device for processing digital audio data and a plurality of slave devices connectable in a ring network with the master device. Each slave device...
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5448588 |
Data transmission circuit capable of avoiding repeated reception and transmission of an identical transmission signal
In a transmission system comprising a plurality of data transmission circuits connected through a transmission line to form a loop, a local transmission signal is transmitted from a selected one of...
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5422886 |
System which achieves efficient utilization of buses for selectively interconnecting communication lines
A system for selectively interconnecting a plurality of communication lines, each of which is adapted for transmitting communication signals, includes a plurality of port buses connected to the...
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5402422 |
Medium access control (MAC) protocol for single bus multimedia fair access local area network
A method provides for data transmission utilizing medium access control protocol with a fair cell-access scheme in a local area network having a unidirectional looped bus and a plurality of network...
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5363493 |
Token ring network test device using finite state machine
A system that monitors a local area network by receiving all messages transmitted over the local area network, and analyzing selected sequences of messages to determine if certain, architecturally...
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5361260 |
Communication system
A communication system comprising a master station and a plurality of slave stations connected for serial transmission by a transmission line, using a HDLC-type protocal. Each of the slave stations...
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5339314 |
Packet data transmission unit having occupied, idle, and released states therefor
A data transmission unit for use in a system wherein data to be transmitted is organized into packets which are assigned one of three states: idle, occupied, or released, and transmitted among...
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5339317 |
Packet communications network and communications method
A packet communications network for transmitting data between nodes by the use of cell slots circulating the network includes a center node inserted in the ring network for sequentially generating,...
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5299312 |
Network fault recovery by controllable switching of subnetworks
A subring module for controlling the switching of a subring in and out of the main network of a token passing ring has a data detection circuit for detecting a token on the network. The subring...
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5282199 |
Method and apparatus for interoperation of FDDI-I and FDDI-II networks
A method and apparatus allow the interoperability of a token ring packet data network managed by the timed-token protocol (FDDI-I) and a TDM network (FDDI-II) with a given bandwidth allocation...
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5214649 |
Insert/remove signalling in LAN systems
In a communication system comprising several nodes and a scheduler interconnected by a serial transmission medium, signalling information is transmitted by inserting it whenever required in the...
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5151898 |
Synchronized slave station connection apparatus for a data communication network
A ring-shaped data communications network in which plural slave stations and a master station are serially connected in a closed loop via transmission lines, the slave stations being removably...
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