Abstract: System and method indicating delays added to packets due to retransmission events. The method includes the steps of receiving multiple packet streams and multiplexing them into a first multiplexed packet stream; storing in memory the first multiplexed packet stream together with time indications; receiving a retransmission request and selecting data for retransmission; multiplexing the first multiplexed packet stream and the data for retransmission into a second multiplexed packet stream; utilizing the time indications for calculating delays that were added to packets of the second multiplexed packet stream as a result of fulfilling the retransmission request; adding the calculated delays to at least some of the packets of the second multiplexed packet stream; and transmitting the second multiplexed packet stream.

Abstract: Systems and methods for low-delay video streaming featuring multiple video compression ratios. One embodiment of the system includes: a real-time video encoder (RT-VE) that receives an incoming high-definition uncompressed video (HD-UV), processes the incoming HD-UV according to first and second compression ratios, and sends the processed video over a resource reservation communication link to a real-time video decoder (RT-VD). The compression delay added by the RT-VE is below the duration of a single video frame, and the RT-VD converts the processed video into an outgoing HD-UV. Wherein on-the-fly switches between the first and second compression ratios, while continuing to receive the incoming HD-UV uninterruptedly, are both visually lossless switches and maintain a total delay between corresponding frames of the incoming HD-UV and the outgoing HD-UV that is below duration of two video frames.

Abstract: A communication link comprising: a first transceiver configured to transmit a first set of packets at a predetermined rate with a first error resistance level, store the transmitted data in a buffer, receive a retransmission request, and retransmit the relevant data using one or more packets encoded with a second error resistance level that is higher than the first error resistance level. And a second transceiver configured to receive the first set of packets, detect an erroneous packet, request retransmission of the erroneous packet, and forward the data received in the packets according to its original order approximately after a fixed delay.

Abstract: Methods and systems for fast recovery from serious differential interferences. An exemplary method includes the following steps: transmitting, by a transmitter to a transceiver, at a fixed data rate above 100 Mbps; receiving, by a receiver from the transceiver, an indication indicating that the transceiver is experiencing a serious interference; responsive to the indication, reducing the data rate at which the transmitter transmits; storing excess data that could not be sent during the period of the reduced data rate; and increasing, within less than 1 millisecond, the data rate at which the transmitter transmits to a level that enables it to transmit both the stored excess data and the ongoing data at the fixed data rate.

Abstract: Method and network for connecting a first end device to a network. One method includes the following steps: supporting, by a common data link layer, both Ethernet protocol and time sensitive network protocol; utilizing the Ethernet protocol for discovering, by the first end device, at least one other end device that is connected to the network; and utilizing the time sensitive network protocol for sending time sensitive data by the first end device to the at least one other end device over the network.

Abstract: System and method for utilizing transmission of known sequences to indicate qualities of operating points of first and second transceivers. One method includes the following steps: transmitting a first known sequence by a first transceiver upon identifying a quality degradation in its operating point; and replying with a second known sequence by a second transceiver upon receiving the first known sequence. The method further includes the steps of transmitting the second known sequence by the second transceiver upon identifying a quality degradation in its operating point, and replying with the first known sequence by the first transceiver.

Abstract: Methods and systems for calculating latency variations in a distributed manner, including the steps of: calculating, by first and second switches, first and second local latency variations, of first and second streaming sessions, at first and second output ports of the first and second switches, respectively. Receiving, by the third switch, the first and second local latency variations; wherein a first and second paths of the first and second streaming sessions, respectively, are passing through a third output port of the third switch after passing through the first and second output ports, respectively. And calculating, by the third switch, a third local latency variation of the first streaming session at the third output port, based on the first and second local latency variations.

Abstract: A transceiver and a corresponding method configured to recover within less than 1 ms from quality degradation in its operating point. The transceiver includes: a receiver analog front end (Rx AFE), an adaptive module comprising at least one of an adaptive digital equalizer and an adaptive digital canceller (ADEC), a common mode sensor AFE (CMS-AFE), a fast-adaptive mode-conversion canceller (FA-MCC), and a slicer. The Rx AFE receives signals from a second transceiver. Shortly after identifying quality degradation in the transceiver's operating point, the transceiver indicates the second transceiver to reduce the rate of the transmitted data. And within less than 1 ms, the transceiver utilizes the improved detection rate to improve the accuracy of the slicing errors, which enables fast adaptation of the ADEC, that improves the quality in the transceiver's operating point to a level that enables the transceiver to indicate the second transceiver to increase the rate.

Abstract: Methods and systems for operating a packet switch that communicates packets with error indication, including the steps of: receiving a packet comprising an error detection field; utilizing the error detection field to identify an error in the packet; marking the occurrence of the error in an error propagation field in the packet; updating the value of the error detection field; and forwarding the modified packet, with the updated value of the error detection field and the error propagation field, according to information carried in the packet.

Abstract: Seamless addition of high bandwidth lanes, including the steps of: sending, by a master, an idle sequence using 7b/10b code words over new high bandwidth lanes in parallel to sending and receiving 8b/10b data with a fixed delay over master-to-slave (m2s) and slave-to-master (s2m) active high bandwidth lanes; sending in parallel a synchronization sequence and a known non-idle sequence during an inter packet gap; utilizing, by the slave, the known non-idle sequence for deskewing the new high bandwidth lanes; and sending, by the master, a transition sequence over both the m2s active high bandwidth lane and the new high bandwidth lanes, and immediately thereafter the master is ready to transmit high bandwidth data using 8b/10b code words over both the m2s active high bandwidth lane and the new high bandwidth lanes.

Abstract: Methods and systems for operating a USB extension over a lossy channel. The USB extension includes at least a state machine and packet loss inference mechanism. The state machine includes a first state in which the USB extension receives a USB data packet from a standard USB host, a second state, unsupported by the USB Specification, in which the packet loss inference mechanism may indicate the state machine to switch back to its first state, and a third state in which the USB extension switches the state machine back to its first state.

Abstract: System and method for a resource reservation network that switches fast between bi-directional co-shared sessions having different network paths. A session creation module (SCM) creates a bi-directional parent session (Sp), between first and second session partners, by: allocating co-shared network resources over a first network hop, and allocating network resources over a second network hop. The SCM further creates a bi-directional derivative session (Sd) between the first session partner and a third session partner, by: allocating network resources to the Sd over a third network hop, and not allocating specifically for the Sd all the network resources required for the Sd over the first network hop. And the network is able to switch between the Sp and the Sd within a duration that is less than half the duration required to create the Sd.

Abstract: Methods and systems for a resource reservation network that supports bi-directional co-shared sessions. A session creation module (SCM) creates a bi-directional parent session (Sp), between first and second session partners, by: allocating co-shared network resources over a first network hop, and allocating network resources over a second network hop. The SCM further creates a bi-directional derivative session (Sd) between the first session partner and a third session partner, by: allocating network resources to the Sd over a third network hop, and not allocating specifically for the Sd all the network resources required for the Sd over the first network hop.

Abstract: Methods and systems for resource reservation networks configured to maintain low latency and latency variation of co-shared sessions. A session creation module (SCM) creates a bi-directional parent session (Sp), between first and second session partners, by: allocating co-shared network resources over a first network hop, and allocating network resources over a second network hop; wherein the network resources allocated to the Sp guarantee a maximum end-to-end latency variation (e2eLV) below 100 usec. The SCM further calculates a maximum e2eLV of a potential bi-directional derivative session (Sd) between the first session partner and a third session partner; wherein the potential Sd utilizes network resources over a third network hop and the co-shared network resources over the first network hop. And the SCM creates the Sd responsive to determining that the maximum e2eLV of the Sd being below 100 usec.

Abstract: Methods and systems for creating bi-directional co-shared sessions and switching between bi-directional co-shared sessions. Embodiment of one method includes the following steps: Sending a first message over a bi-directional parent session network path (Pp) to indicate allocation of network resources along the Pp, including co-shared network resources. Creating the parent session (Sp) by sending a first session creation message. Sending a second message over a bi-directional derivative session network path (Pd) to indicate allocation of non-co-shared network resources along the Pd. And creating the Sd by sending a second session creation message.

Abstract: A Tomlinson-Harashima Precoding (THP) transmitter transmits data modulated by non-overlapping Dynamic Modulation Coding (DMC) to a receiver. In order to enable the receiver to differentiate between the different modulations of the DMC, a novel non-overlapping DMC is used. The constellations of the non-overlapping DMC are selected such that the result of the modulo operation of the THP maintains the signal levels, belonging to the different constellations, separated.

Abstract: A Tomlinson-Harashima Precoding (THP) transmitter transmits data modulated by non-overlapping Dynamic Modulation Coding (DMC) to a receiver. In order to enable the receiver to differentiate between the different modulations of the DMC, a novel non-overlapping DMC is used. The constellations of the non-overlapping DMC are selected such that the result of the modulo operation of the THP maintains the signal levels, belonging to the different constellations, separated.

Abstract: Methods and systems for admitting streaming sessions while controlling links capacities, including the steps of: receiving a request to establish a new streaming session in presence of an existing streaming session; wherein the paths of the session and the new session pass through a link, which is currently set to have a first capacity. Estimating a first end-to-end latency variation of the existing streaming session, supposing that the new streaming session is established over the new path. Determining that the first end-to-end latency variation exceeds a maximum allowable end-to-end latency variation of the existing session. Estimating a second end-to-end latency variation of the existing streaming session, supposing that the link is set to have a second capacity higher than the first capacity. Determining that the second end-to-end latency variation does not exceed the limit. Setting the link to have the second capacity. And admitting the request.

Abstract: System and method for utilizing transmission of known sequences to indicate qualities of operating points of first and second transceivers. One method includes the following steps: transmitting a first known sequence by a first transceiver upon identifying a quality degradation in its operating point; and replying with a second known sequence by a second transceiver upon receiving the first known sequence. The method further includes the steps of transmitting the second known sequence by the second transceiver upon identifying a quality degradation in its operating point, and replying with the first known sequence by the first transceiver.

Abstract: Methods and systems for fast recovery, such as a transceiver that assists a second transceiver to recover rapidly from quality degradation. In one embodiment, the transceiver includes a receiver and a transmitter. The receiver receives from the second transceiver an indication to transmit known data, wherein utilizing the known data enables the second transceiver to recover within less than 1 millisecond from the quality degradation. And the transmitter transmits the known data, wherein the known data comprises bitwise complement code words of an idle sequence, and each bitwise complement code word appears in the idle sequence.