| ECI Telecom LTD Patent applications |
| Patent application number | Title | Published |
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| 20120002966 | TECHNOLOGY FOR SIMULATING AND/OR CONTROLLING COMMUNICATION OPTICAL NETWORKS - A technique for controlling power of a network node in an optical mesh network, comprising: determining a number of optical paths ingressing or expected to ingress the node, determining capacity or expected capacity of each of the paths; calculating for each of the paths a virtual input power P | 01-05-2012 |
| 20120002959 | TECHNOLOGY FOR FAULT ALLOCATION IN PASSIVE OPTICAL NETWORKS (PON) - A method for allocating faults in a passive optical network (PON) by placing a number of passive unique optical correlators in a number of respective diagnostic points of the PON, each of the passive unique optical correlators being responsive to an optical diagnostic signal by returning a predetermined unique matching signal; by further transmitting the diagnostic optical signal in the PON towards the diagnostic points to receive upstream response signals from the correlators. Upon detecting presence or absence, in the received response signals, of a predetermined unique matching signal expected from a specific optical correlator, judging about a fault in proximity of the respective specific diagnostic point. | 01-05-2012 |
| 20110280580 | TECHNIQUE FOR TRAFFIC RECOVERY IN MULTILAYER COMMUNICATION NETWORKS - A method for recovery of a traffic flow being conducted via a communication line in a multi-layer communication network, the traffic flow comprising a Guaranteed traffic portion GT and a Best Effort traffic portion BET assigned to respective bandwidth resources of the line. The communication network comprising at least two network layers provided with respective traffic recovery mechanisms which utilize bandwidth resources such as time slots, wavelengths, physical links, logical links. The traffic flow may comprise traffic component(s) at different network layers, and the bandwidth resources of the traffic component(s) may be divided into GT and BET portions. The method comprises forming a shared pool of recovery resources, for all the layers in the line, from the bandwidth resources assigned to BET on all the layers. The method further comprises utilizing the shared pool of recovery resources for recovery of any of the traffic components of the traffic flow. | 11-17-2011 |
| 20110280242 | TECHNOLOGY FOR FLUSHING AND RELEARNING MAC ADDRESSES IN TELECOMMUNICATION NETWORKS - A technique for performing a flushing process at a port of a network switch, where the flushing process comprises a flooding operation and an operation of relearning MAC addresses. In the method, these two operations are made independent, and the operation of relearning MAC addresses is started before termination of the flooding operation. An operation of forwarding packets to the relearned MAC addresses can be started before termination of the flooding operation. | 11-17-2011 |
| 20110249595 | TECHNIQUE FOR PROVIDING SECURED TUNNELS IN A PUBLIC NETWORK FOR TELECOMMUNICATION SUBSCRIBERS - A secured OTT architecture for Triple-Play services as well as for OTT based cellular service. Any access networks to which customers of the OTT based services belong, form a so-called last mile access segment which is less prone to security attacks than a public network such as the Internet. The customers' equipment (broadband CPEs, say in the form of modems or Femtocell CPEs) can be freed from securing traffic within the non-public access network, while an access node being a border node between the two networks aggregates the traffic from the access terminals and generates one or more secured communication tunnels via the public network for transmitting the aggregated traffic. | 10-13-2011 |
| 20110236020 | LOW COST HIGH BIT RATE TRANSCEIVING TECHNIQUE FOR OPTICAL NETWORKS - Technique for low cost delivery of a high bit rate electric signal via an optical network, by using a group of optical channels in the network for respectively delivering there-through a number of component electric signals of the high bit rate signal, The optical channels are respectively associated with different wavelengths, and each of the optical channels comprises optical elements suitable for conducting an optical signal having bandwidth significantly narrower than bandwidth of any of the component signals. The high bit rate electric signal is then successively restored from the optical signals delivered via the optical channels. | 09-29-2011 |
| 20110116621 | POWER SAVING TECHNIQUE FOR TELEPHONY ACCESS NETWORKS - Technique is proposed for managing total power consumption in an access network comprising two or more interface modules serving a plurality of subscriber lines, the technique comprises performing a study of real power consumption of the subscriber lines in the access network on a line-to-line basis, correlating results of the study with inventory information concerning allocation of the subscriber lines to the interface modules and power consumption ensured by said modules to the lines and, based on the correlation, assessing optimality of allocation of the subscriber lines to the interface modules. | 05-19-2011 |
| 20110051597 | TECHNIQUE FOR TESTING PEERS IN MULTICAST NETWORK DOMAIN - A technique for testing peer nodes in a multicast domain (such as an access network) interconnected with an Ethernet network via an Intermediate Bridge (IB), especially helpful when an individual MAC address of a destination peer node is unknown. The technique comprises a) issuing a Connectivity Fault Management (CFM) message from the Ethernet network, and introducing into the CFM message alternative destination data being different than the individual MAC address of the destination peer node; b) utilizing the alternative destination data, at the IB, for determining topological position or address of the destination peer node, and c) forwarding contents of the CFM message only to the destination peer node. | 03-03-2011 |
| 20110038642 | TECHNIQUE FOR DETECTION OF OPTICAL DATA SIGNALS - Technology for detecting an optical data signal carried in a combined optical signal that comprises a carrier optical signal modulated by the optical data signal and also comprises ASE noise. The proposed optical data detector/receiver is provided with an SHG device adapted to generate a second harmonic optical signal of the carrier optical signal modulated by the data signal. In the signal, generated by the SHG, the ASE noise will be essentially reduced. | 02-17-2011 |
| 20100316390 | TECHNOLOGY FOR PROVIDING TELECOMMUNICATION SERVICES TO MULTIPLE OPTICAL COMMUNICATION LINES - A system for serving N optical communication lines by a redundant set of modules in an optical network; where the set of modules comprises N>1 main modules and one backup module, N optical splitters, 2N fiber connections and a control means. In the system, each of the N optical splitters is connected to two different modules of the set by two respective fiber connections out of the 2N connections, while each of the N optical splitters is also coupled to one of the N optical communication lines. The arrangement is such that the control means selectively activates/inactivates any of the fiber connections for respectively enabling/blocking transfer of data there-along; the control means thus ensures that each specific line of the N optical communication lines is always served by either one or another of two different modules. | 12-16-2010 |
| 20100309821 | METHOD AND NETWORK FOR COMBINED PROTECTION OF ETHERNET TRAFFIC - Technique for protecting different telecommunication services in an Ethernet network using two different loop avoiding traffic protection protocols, by concurrently utilizing the protocols in one and the same network on different loop free logical topologies of the network. The telecommunication services are preliminarily distributed in such a manner, that the services which can be better protected by one of the two protocols and the services better protectable by the other protocol, are carried via the different topologies. | 12-09-2010 |
| 20100290779 | Method for estimating bandwidth limiting effects in high frequency transmission communication systems - A method for estimating a bandwidth limiting penalty of a chain of bandpass optical filters in an optical telecommunication system. The method is advantageous for systems carrying an optical signal at a bit rate of about 10 Gb/s, wherein average bandwidth of the filters in the chain is of the same order of magnitude as bandwidth of the optical signal. The method comprises selecting a worst case filter, checking the system by testing and/or simulating it as being provided with the selected worst case filter instead of the chain of filters, and then judging about the bandwidth limiting penalty of the chain of filters based on results of the checking. | 11-18-2010 |
| 20100260505 | SYSTEM AND METHOD FOR GENERATING MULTILEVEL CODED OPTICAL SIGNALS - A simple and effective all-optical system, producing a multilevel coded optical signal based on the M-ASK technology and by the minimized equipment. The novel all-optical modulation technique for optical M-ASK generation is based on nonlinear interaction between optical signals, say between N 2-ASK modulated pump signals having extinction ratio ER | 10-14-2010 |
| 20100209104 | TECHNIQUE FOR FORWARDING PACKETS IN A GIGABIT PASSIVE OPTICAL NETWORK (GPON) - A technique for forwarding downstream packets in a GPON comprising an OLT unit having a physical PON port connected to N Optical Network Termination (ONT) units by optical fibers. The physical PON port accommodates N individual virtual GEM ports terminated with the N ONT units (ONTs) which form N:1 service. The technique comprises assigning in the physical port of the OLT unit a virtual GEM port being a shared broadcast GEM port terminated with all the N ONTs of the N:1 service. Those downstream packets applied to the physical PON port, which would otherwise be flooded—such as broadcast packets or packets having unknown destination address—will now be forwarded only via the shared broadcast GEM port. | 08-19-2010 |
| 20100196015 | TECHNIQUE FOR SECURING TRANSMISSION OF DATA ALONG AN OPTICAL COMMUNICATION LINE - A technique for securing data transmission via an optical communication line comprising an optical fiber extending between a first network element and a second network element; the technique comprises conveying a first optical signal carrying data via the optical fiber from the first network element towards the second network element at a predetermined optical wavelength, and conveying a second optical signal at the same predetermined optical wavelength via the same fiber in the opposite direction to create within the optical fiber a combined optical signal such that combination of the first and second optical signals is adapted to hamper an unauthorized non-intrusive extraction of the first optical signal from the combined optical signal. | 08-05-2010 |
| 20100157794 | METHOD FOR FINDING PROTECTED PATH IN MESH NETWORKS - A method of finding a primary communication path in a mesh network, which would be at once a protected path having a fully guaranteed segmented node or node-link protection. The method comprises defining a required protection type and further selecting each specific path segment of the desired communication path based on initial user's requirements and topology information of the network. Each specific node path segment N for the communication path is selected upon ensuring that it can be protected in the network by a node backup path satisfying the initial user's requirements. Each specific link path segment L for the communication path is chosen if it can be protected in the network by a link backup path satisfying the initial user's requirements and if the node path segment N to which segment L leads cannot be protected by a suitable node backup path. | 06-24-2010 |
| 20100128344 | TECHNIQUE FOR COMPENSATING UNDESIRED EFFECTS IN OPTICAL LINKS OF AN OPTICAL COMMUNICATION NETWORK - A technique for compensating undesired effects in optical links of an optical communication network, using adjustment modules suitable for inserting into optical links, preferably into the links incoming network nodes. Each of the adjustment modules serves for compensating two or more different physical effects accumulated in the optical link when transmitting an optical signal there-along. The module comprises at least two controllable blocks respectively comprising a variable gain optical amplifier VGA for selectively compensating power loss and a tunable dispersion compensation module TDCM for selectively compensating chromatic dispersion. | 05-27-2010 |
| 20100104283 | TECHNIQUE FOR MANAGING OPTICAL NETWORKS - For securing from invasion a group of network nodes in a multi-channel optical communication network, providing wavelength selective optical amplifiers WSOA in optical fiber links incoming network nodes of the group, and providing a network controller NC for holding and updating control information about optical channels allowed in specific optical fiber links incoming specific network nodes of the group, and for supplying each of the WSOAs with suitable control information concerning the incoming optical fiber links associated therewith. At each specific WSOA, in response to the received control information, blocking any incoming wavelength except for wavelengths assigned to the optical channels allowed in that specific incoming optical fiber link. | 04-29-2010 |
| 20100080239 | TECHNIQUE FOR COMBATING LOOPS IN COMMUNICATION NETWORK - Technology for combating loops in multi-domain networks, by assigning to network domains categories, at least such as “high/trusted” and “low/less trusted”, and by making a decision about relearning Forwarding Information Base FIB of any edge node interconnecting different network domains, utilizing the assigned categories. | 04-01-2010 |
| 20090313627 | TECHNIQUE FOR PERFORMING A SYSTEM SHUTDOWN - Technique for expediting a shutdown process in a computerized system, comprising a number of software modules MUC, a number of functional components and at least one user entity U. A user entity applies requests to a MUC and serves an access provider of the MUC for accessing the functional components. The method performs accelerated shutting down of the software module MUC, by the following steps: initiating shut down of the MUC (by a user entity U); making the MUC software module opaque so as to stop managing of the functional components; shutting down the software module MUC. | 12-17-2009 |
| 20090274155 | TECHNIQUE FOR PROVIDING INTERCONNECTION BETWEEN COMMUNICATION NETWORKS - Technique for interconnecting a first communication network and a second communication network, for example layer 2 Ethernet networks, which uses a fully or partially redundant dual homing configuration. The configuration includes: at least three network elements where at least two of them are peer elements belonging to the second network, and at least two traffic lines respectively associated with the peer elements and connecting the first and the second networks via the three network elements. The technique comprises establishing a bi-directional signaling between the peer elements and, based on the signaling information, deciding which traffic line should forward the traffic. | 11-05-2009 |
| 20090074418 | SELF CHECKING OPTICAL ADD DROP MULTIPLEXER - A technique is proposed for performing add/drop operations in an OADM assembly serving an optical network and comprising an add unit and a drop unit. With respect to at least one optical channel assigned to an optical wavelength λ, the OADM assembly is capable of dropping the channel from the network via the drop unit as a first signal, and adding the channel to the network via the add unit as a second signal. According to the technique, the OADM assembly additionally comprises an authentication and control unit ACU for authenticating the at least one optical channel and controlling the OADM assembly. The ACU is authenticates the optical channel by comparing one or more components of the first signal with one or more components of the second signal serving as a reference, and based on the authentication result, makes decisions whether to allow or block the dropping and/or adding of the optical channel. | 03-19-2009 |
| 20080310840 | Optical Communication Network and Method of Routing in the Network - A network with nodes interconnected by optical fiber links carrying an optical communication channel having a single optical wavelength. In the network, at least two network nodes operate as transmitting nodes generating a first short pulse optical signal at different bit rates; at least one of the other network nodes operates as a receiving node and is designated to receive transmissions from at least one of the transmitting nodes via the optical channel in a form of a second short pulse optical signal. The receiving node is provided with a dispersion compensation module adapted to compensate dispersion created in the optical fiber along the optical channel between a specific transmitting node and the receiving node, thereby ensuring receipt, in a restored form, of data transmitted using the second optical signal and directed to the receiving node. | 12-18-2008 |
| 20080304500 | Architecture of Gateway Between a Home Network and an External Network - A Home Gateway (HGW) interconnects a Home Network (HN) and an External Network (EN), and is adapted to communicate with the HN and EN at a Network layer. HGW is provided with a Service Application Programming Interface Layer (SAPI Layer) capable of performing, at an Application layer, mediator functions for supporting communication and services between the HN and EN. Devices of the HN are able to communicate with devices of EN via the HGW, and to actualize services via the HGW. | 12-11-2008 |
| 20080291897 | Access System for the Provisioning of Different Communications Sevices, and Method for Using Same - An access communication system is provided which comprises at least one aggregation device comprising at least one automated switching matrix for connecting a plurality of communication devices with a plurality of subscribers. When a new subscriber is to be connected through the at least one aggregation device, the at least one automated switching matrix is operative to enable the provisioning of a required service to the new subscriber either by using one of these communication devices or by communicating with a communication device installed at a different location and operative to enable the provisioning of the service required by the new subscriber. By a preferred embodiment the at least one aggregation device and automated switching matrix and the plurality of communication devices are managed by a single managing entity. | 11-27-2008 |
| 20080279550 | Method and System For Measuring Average Q-Factor in Optical Networks - A technique for determining averaged Q-factor, Qavg, for an optical binary signal transmitted at a bit rate X, based on amplitude histogram evaluation and on asynchronous sampling. The technique is inexpensive since it uses sampling pulses, which have bit rate Y lower than X and are not synchronized with the optical signal. The technique proposes conducting N sampling sessions and constructing N respective amplitude histograms for the sessions, wherein an initial session is conducted at a randomly selected initial phase of the sampling pulses, and N−1 sessions are held at different phases shifted in respect of the initial phase. The technique then compares the obtained N amplitude histograms to select there-from the amplitude histogram having the minimal cumulative value of cross-point data. The averaged Q-factor is determined from the selected histogram, with accuracy comparable with that of synchronous methods. | 11-13-2008 |
| 20080247315 | Flooding of Data Packets in a Switching Telecommunications Device - A technique is described for flooding data packets in a telecommunication switching device comprising a plurality of interface blades. The technique comprises arranging a logical ring by interconnecting a group of interface blades of the telecommunication switching device, wherein the interface blades of the group comprise all leaf ports of the telecommunication device. Upon receiving a packet with un known destination at a particular interface blade of the logical ring, the packet is forwarded along the logical ring using unicast transmission. At each of the interface blades holding at least one leaf port, the packet is fed to at least one leaf port of the interface blade. The technique both ensures that the packet will be received at its destination via any of the leaf ports, and prevents burst flooding in the telecommunication switching device. | 10-09-2008 |
| 20080219664 | Method and System for Controlling Optical Network - A technique is described for controlling and optical network composed of network elements (NEs), with the aid of a network controller (NC) being in communication with the network elements. The technique includes collecting, by the network controller NC, information on the NEs therefrom, and, whenever a change in the network is requested, simulating within the NC operation of the network with the requested change and based on the collected information. The NC makes a decision on acceptability of the requested change, and may then cause implementation of the requested change in the network. | 09-11-2008 |
| 20080205890 | Method For Transmitting Lacs Protocol Via an Optical Communication Line - A technique for exchanging LCAS control information between a first network element and a second network element interconnected by a bi-directional optical communication line, while conveying substantially unidirectional data traffic in the form of a virtual concatenated group (VCG) binary stream transmitted in a first direction via the bi-directional optical communication line, the technique comprising: —in the first direction, transmitting the LCAS control information via the bi-directional optical communication line in the VCG binary stream, by placing the information in one or more overhead bytes conventionally specified for the VCG binary stream, —in a second (opposite) direction, transmitting the LCAS control information in an existing binary stream non-related to the above-mentioned unidirectional data traffic; the existing binary stream should pass via a communication trail connecting the first network element and the second network element but not obligatory coinciding with the above-mentioned line; the discussed information should be placed in one or more overhead bytes of the existing binary stream. | 08-28-2008 |
| 20080205435 | Broadband Communication Network Provided with Media Storage - A Digital Subscriber Line Access Multiplexer (DSLAM) is provided which comprises: a network side interface adapted to receive a plurality of communication signals conveyed along a broadband network: a storage means adapted to receive at least some of the communication signals, associate one or more corresponding priorities therewith, and store their content in accordance with at least one of the associated priorities: multiplexing means operative to retrieve content stored in the storage means and multiplex the content received with run time data received at the network side interface into a multiplexed product while ensuring at least a minimum pre-defined quality of service for the multiplexed product: a subscribers' output interface adapted to receive the multiplexed product from the multiplexing means and forward it along a communication line extending towards a subscriber; and a subscribers' input interface adapted to receive information generated by subscribers. | 08-28-2008 |
