Eci Telecom Ltd.

Valens Semiconductor Ltd.

Shai Stein

Eran Rippel

Moredechay Morgenstern

Alberto Schliserman

Amitay Melamed

Aharon Lavon

Moshe Aharon

Ofer Reviv

Dror Nahumi

Methods and systems for providing a virtual HDBaseT&#xae; link. In one embodiment, a first switch transmits packets over an Ethernet network that includes one or more hops. The payload of each of the packets includes an HDBaseT&#xae; T-packet belonging to an HDBaseT&#xae; session. A first processor sets, for each packet from among a plurality of the packets, a timestamp value in the packet to correspond to the time at which the packet is transmitted by the first switch. A second switch receives the packets over the Ethernet network. A second processor calculates a clock correction value based on the timestamps in the plurality of packets, and utilizes the clock correction value to perform at least one of the following: (i) control transmission, by the second switch, of data in T-packets in the payloads of the packets, and (ii) recover a source clock of native media delivered over the Ethernet network.

Virtual HDBaseT link

Methods and systems for enabling recovery of lost packets transmitted over a communication network. In one embodiment, a device includes a processor and a transmitter. The processor is configured to calculate a row parity packet (RPP) and a diagonal parity packet (DPP) for n packets. Each of the RPP, the DPP, and the n packets comprises n segments. The processor utilizes each packet, from among the n packets, to update parity values in the RPP and the DPP in such a way that each segment in the packet is used to update one segment in the RPP and at most one segment in DPP. The transmitter transmits the n packets, the RPP, and the DPP over the communication network. Receiving a subset of n members of a set comprising: the RPP, the DPP, and the n packets, enables recovery of two lost packets.

Efficient double parity forward error correction on a communication network

Methods and systems that enable recovery lost packets that were transmitted over a communication network. In one embodiment, a device includes a receiver and a processor. The receiver receives n packets that belong to a set comprising n+2 packets transmitted over the communication network, where the set includes: n data packets, a row parity packet (RPP), and a diagonal parity packet (DPP). Each received packet comprises n segments. Each segment of the RPP comprises a result of a parity function applied to a set comprising n segments, each belonging to a different packet from among the n data packets. Each segment of the DPP comprises a result of a parity function applied to a set comprising n segments, each belonging to a different packet selected from a group comprising the n data packets and the RPP. The processor may utilize the received packets to recover two lost packets.

Efficient recovery of lost packets using double parity forward error correction

Methods and systems that enable recovery of a lost packet from an incomplete block transmitted over a communication network. In one embodiment, a system includes a first processor configured to: receive a block of packets during a period spanning a certain duration, calculate a parity packet (PP) for the block, and provide in PP an indication of the number of packets in the block, where the block comprises k&#x3c;n packets, and the certain duration is long enough to enable the processor to receive at least n packets. A transmitter transmits the k packets and PP. A receiver receives, over a period that is not longer than the certain duration, packets sent by the transmitter. A second processor detects, based on the number indicated in PP, that one of the k packets of the block was lost, and utilizes PP to recover said lost packet.

Forward error correction for incomplete blocks

A method and a Reconfigurable Optical Add Drop Multiplexer (ROADM) where blocking of a first optical signal carried over a specific optical channel in the ROADM is performed by compensating the first optical signal by a second optical signal created for that purpose.

Technique for blocking of optical channels

A technique enabling an access node to undertake more responsibility and render multicast streaming more effective by utilizing streaming service control messages SSCP which contain important information such as Quality of Experience or Quality of Service. The access node itself or in cooperation with a processing/monitoring entity may be enabled to analyze QOE data in SSCP report messages from different access network receivers, to identify specific receivers which encounter problems and to indicate the problems to the provider of the network.

Method for monitoring access networks

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.

Architecture of gateway between a home network and an external network

Technology for providing subscribers with communication services in accordance with their agreements with a service provider, that comprises: a) determining a plurality of subscribers to be connected to the service provider via a distribution unit located in an access network; b) selecting a default advanced broadband technology (DABT) for the distribution unit; c) in the distribution unit, providing a plurality of communication devices to reserve for each of the plurality of subscribers, irrespective of their agreements reached with the service provider, an individual communication link for supplying broadband communication services based on the selected DABT; while d) enabling each of the plurality of subscribers to receive services in accordance with their respective agreements with the service provider.

Method and device for providing communication services

The invention proposes a method for handling ATM traffic comprising packets of AAL5 type composed of ATM cells, at a network node at VP-layer. The method comprises monitoring each of the cells incoming the node to obtain information at least on its VC-layer and VP-layer parameters, processing information on the mentioned parameters and registering the processed information concerning each of the cells in a statistical database to obtain statistical data with respect to at least the VC-layer and VP-layer parameters of the packets handled at the node.

Method of handling of ATM cells at the VP layer

A technique is proposed for supporting a mobile communication session in a combined communications network comprising a mobile network and a non-mobile access network. In the mobile network, the mobile communication session is associated with a mobile number. The technique comprises: a) associating, in the non-mobile access network, the mobile number with a non-mobile device of the non-mobile network, b) providing an access device being in communication with a plurality of non-mobile devices of the non-mobile network and with a controller of a mobile network, operative to represent the non-mobile device of the plurality of non-mobile devices as having the mobile number; c) selectively conducting the mobile communication session either through a mobile device associated with the mobile number in the mobile network, or through the non-mobile device associated with the mobile number in the non-mobile network.

Growing community of inventors

Hod Hasharon, Israel

Shai Stein