Data is sent from a memory buffer device to a host device over a link. An error in the data is determined. A read response cancellation signal is sent to the host device to indicate the error to the host device, where the read response cancellation signal is to be sent subsequent to the data being sent from the memory buffer device to the host device.

A transmitting device for generating a plurality of encoded portions of a video to be transmitted to a receiving device over a network configured to: receive an error message over a feedback channel from the receiving device indicating at least one of said plurality of encoded portions that has been lost at the receiving device; encode a recovery portion responsive to said receiving said error message; and transmit said recovery portion to the receiving device over said network; wherein said error message includes information pertaining to a decoded portion successfully decoded at the receiving device and said recovery portion is encoded relative to said decoded portion.

The invention relates to a method of requesting retransmission of a lost data packet initially transmitted by a multicast transmitter in a network, the multicast transmitted multicasting data packets in the network, said method being carried out by a first multicast receiver and comprising the following steps: upon detection (201) of a loss of at least one data packet on a data link between the multicast transmitter and the first multicast receiver, setting (206) a timer value and arming (207) a timer; upon detection (208) that the timer reaches the set timer value, sending (209) a non-acknowledgment message to the multicast transmitter via an uplink control link, said non-acknowledgment message comprising an identifier of at least one lost data packet, if it has not been previously retransmitted by the multicast transmitter.

An apparatus to derive a symbol error rate of an interconnect under test from a detector error rate of the interconnect, including: an error storage buffer; an input interface to communicatively couple to a serializer-deserializer at a physical level of an interconnect and to receive an input bitstream via the PHY level of the interconnect; a bitstream regenerator; a synchronization interface to receive synchronization data for the bitstream regenerator to reconstruct a clean reference bitstream; and a comparator to: compare the input bitstream to the clean reference bitstream; identify an error in the input bitstream including identifying a difference between the clean reference bitstream and the input bitstream; and store an error record in the error storage buffer, the error record including the error prepended by a plurality of clean bits to enable an analyzer to locate the error within the input data stream and construct a DER therefrom.

Methods, systems and apparatus are provided for hybrid automatic repeat request (HARQ) processes for different transmission time interval (TTI) lengths. A wireless transmit/receive unit (WTRU) may link a first HARQ process and a second HARQ process. The WTRU may transmit a first transport block (TB) using the linked first HARQ process and a first HARQ buffer. The WTRU may receive a uplink (UL) grant and determine that the received UL grant is for a new transmission for the linked second HARQ process. The WTRU may release the first HARQ buffer based on a determination that the received UL grant is for the new transmission for the linked second HARQ process. Also, the WTRU may generate a second TB for the new transmission and store the new TB in the first HARQ buffer. The WTRU may transmit the second TB using the linked second HARQ process and the first HARQ buffer.

A transceiver associated with a wireline communication system is disclosed. The transceiver comprises one or more processors configured to associate a quality of service (QoS) grade tag to each data packet of a plurality of data packets to be transmitted and assemble a data transfer unit (DTU) comprising one or more or a part of a data packet of the plurality of data packets, wherein the one or more or the part of the data packet are encapsulated into a plurality of DTU frames within the DTU. The one or more processors is further configured to associate a highest DTU tag to the assembled DTU, wherein the highest DTU tag is indicative of a highest QoS grade associated with the DTU frames of the assembled DTU; and determine a schedule for transmission or retransmission of the assembled DTU, based on the highest DTU tag of the assembled DTU.

In a particular implementation, a method includes dynamically adjusting a size of a buffer of a receiving terminal based on a comparison of a signal quality metric associated with a wireless communication channel between the receiving terminal and a transmitting terminal to a signal quality threshold. The method also includes storing a first set of data packets of a plurality of data packets in the buffer. The first set of data packets are received at the receiving terminal from the transmitting terminal. The method further includes outputting reconstructed speech based on the first set of data packets and replacement packets that are generated based at least in part on the first set of data packets. The replacement packets are associated with a set of unreceived data packets of the plurality of data packets.

The present invention discloses a method of re-transmission of a lost MMT packet by a packet transmission apparatus. The method includes generating a media processing unit (MPU) based on a media fragment unit (MFU) and generating an MMT asset by encapsulating the MPU; generating an MMT packet based on the MPU included in the generated MMT asset; and transmitting the generated MMT packet, wherein the method further comprises adding, in a signaling message related to re-transmission of the MMT packet, delay_constrained_ARQ_flag to indicate whether or not the MMT packet transmission apparatus supports a delay-constrained automatic repeat request (ARQ) function.

A user equipment (UE) is described. The UE includes receiving circuitry configured to receive a radio resource control message including first information used for configuring a number of more than one code block groups (CBGs) in a transport block (TB). The receiving circuitry is also configured to receive the more than one CBGs, the more than one CBGs comprising first CBGs and second CBGs. The UE also includes processing circuitry configured to determine a number of code blocks (CBs) from the TB. A first number, a second number, a third number, and a fourth number are given based on the number of more than one CBGs and the number of CBs. The first number is a number of the first CBG(s). The second number is a number of CB(s) comprised of each of the first CBG(s). The third number is a number of the second CBG(s). The fourth number is a number of CB(s) comprised of each of the second CBG(s).

A wireless device receives one or more messages comprising: a parameter indicating that uplink duplication is configured for a bearer corresponding to a first logical channel and a second logical channel; first mapping restrictions of the first logical channel to at least one first cell; and second mapping restrictions of the second logical channel to at least one second cell. A control element indicating activation or deactivation of duplication for the bearer is received. If the control element indicates activation of the duplication, the first mapping restrictions are applied to the first logical channel and the second mapping restrictions are applied to the second logical channel. If the control element indicates deactivation of the duplication, the first mapping restrictions are lifted from the first logical channel and the second mapping restrictions are lifted from the second logical channel.