Alcatel Lucent

Alcatel N.v.

Alcatel

Nokia of America Corporation

Frank C Defoort

Frank Octaaf Van Der Putten

Bart F Voeten

Christophe D Vermeulen

Carl Jeremy Nuzman

Dirk Vanderhaegen

Danny Van Bruyssel

Jan Sylvia Verlinden

Willem J Verbiest

Carl Mertens

Koenraad Schelfhout

Christian Hublet

Wim Troch

Paul Van Esbroeck

Joachim Van Leeuwe

Margherita La Fauci

Jan Verlinden

Paul Spruyt

Christophe Gendarme

In one example embodiment, a system including a plurality of ports, a plurality of vectoring processors, each of the plurality of vectoring processors having a coefficient memory storing vectoring coefficients corresponding to different victim line and disturber line combinations of a plurality of communication paths connected to the plurality of ports, at least one victim line associated with two of the plurality of vectoring processors and a controller, the controller being configured to assign the victim line and disturber line combinations to the memories based on loads associated with the vectoring coefficients.

Methods and systems for load balancing in vectoring

A crosstalk cancellation device cancels crosstalk noise of at most M disturbing communication lines in a victim communication line forming part of a vectoring group. The crosstalk cancellation device gradually decreases the cancellation depth of a cancelled disturbing communication line in the victim communication line upon a crosstalk noise variation in the vectoring group requiring cancellation of crosstalk noise of a not yet cancelled disturbing communication line in the victim communication line.

Crosstalk cancellation device and method with improved vectoring stabilisation

The invention discloses a method to control a resynchronization trigger in an access device (). A management station () is connected to the access CPE () via a control channel (). The CPE is able to receive a control signal including application information and to calculate the synchronization trigger where the application information is used.

Application adapted access device and a method to adapt resynchronization

A method for network analysis in an access network () in connection with a data transmission network, in particular an xDSL network, with a plurality of subscriber lines (-). The method comprising the step of collecting data on physical layer operational parameters ({&#x3c6;}) of at least one subscriber line (-) and the steps of simulating a behavior of higher network layers based on said collected data when deploying at least one application (-) on said subscriber line (-); generating data on higher layer performance parameters for said application (-); and generating an advice signal (AS) based on said data and indicative of the compatibility of the physical layer/application couple with predetermined Quality-of-Service (QoS) requirements for said application (-). Thus, the proposed method provides network operators with information concerning the question if a given service application (-) will run on a respective data transmission (core and access) network (') in accordance with the QoS values recommended for said application (-), in particular a high-bandwidth rich media service type application, e.g. a triple-play service.

Method for network analysis and network analyser module

The present invention relates to a video server memory management for a video server transmitting video signals (VS) to user stations in response to control signals issued by these stations. This method includes the steps of providing a memory constituted by a plurality of random access memories (HD1/ . . . /HD4) and subdividing each of said video signals in a plurality of distinct blocks (BL1/ . . . /BLQ) each typically corresponding to less than a second of the video signal. It is further proposed to include in this method the step of storing any two blocks (BL1/ . . . /BLQ) which normally are to be consecutively retrieved from the memory in distinct random access memories (HD1/ . . . /HD4). In this way the full interactive video on demand service, giving the user stations control over the way in which the blocks are retrieved from the memory, is improved as is the rate at which a predetermined sequence of blocks is retrieved from the memory.

Video server memory management method

A video on demand network (VODN), transmits video signals (VS) to user stations (US11, . . . , US2N) pursuant to the receipt of control signals (CS) issued by these user stations. In order to optimize the retrieval costs, this video on demand network maintains a large video library in a central video server (CS) and stores locally popular video signals in a plurality of local distributed video servers (DS1/2) from which the latter video signals are transmitted to the user stations. The video signals provided by the local distributed servers are updated from the central server based upon the changing popularity of the video signals. The present invention proposes in particular to store the video signals in the local distributed servers in random access read/write memories (HDA), e.g., electronic RAMs, magnetic or optical disks, and/or the like, from which the video signals can flexibly be supplied on-line to the user stations and to store the video signals in the central server in sequential access memories, e.g. Digital Audio Tapes (DAT) and CD-ROMs (CDR), providing cheap mass storage.

Video on demand network, including a central video server and

The present invention relates to a video server (DS) for transmitting video signals (VS) to user stations in response to the receipt of control signals issued by these user stations and including a plurality (HDA) of memories (HDASA, HDASB) which are controlled by a plurality of memory controllers (OBC, SCSIC-A/B). The memory controllers are controlled based on the control signals by a server control means (DSC, PCM1/PCMN) which includes a server controller (DSC) and a plurality of program control modules (PCM1/PCMN) each of which is associated with a subset (HDA1/HDAN) of the plurality (HDA) of memories (HDASA, HDASB) and to a subset of the plurality of memory controllers (OBC, SCSIC-A/B). This server control means is kept relatively simple if the server controller activates for each requested video signal the program control module in which associated subset of memories this video signal is stored and if this program control module, upon being activated, operates its associated memory controllers to achieve the transmission.

Video server for video-on-demand system with controllable memories and

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Aartselaar, Belgium

Frank C Defoort