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.

Aspects of a storage device including a memory and a controller are provided which allow for data associated with a media stream and having high entropy to be stored in healthier memory locations, with improved data protection, and with more optimal NAND parameters than for data having low entropy. After receiving data associated with a media stream, the controller identifies an entropy level of the data. When the entropy level meets an entropy threshold, the controller stores the data in a first block of the memory associated with a lower BER, and/or with a higher write latency or a first, more discrete voltage. Alternatively, when the entropy level does not meet the entropy threshold, the controller stores the data in a second block of the memory associated with a higher BER, and/or with a lower write latency or a second, less discrete voltage.

A method of transmitting downlink data in a mobile communications system, wherein the mobile communications system comprises a base station configured to communicate wireless signals to one or more terminal devices. The method comprises receiving an indicator of a maximum number of downlink repetitions “Nmax” currently accepted by a terminal device, wherein a number of downlink repetitions indicates a number of times that the same signal is transmitted to the terminal device; setting an actual number of downlink repetitions “Ntx” so that the actual number of downlink repetitions meets the condition Ntx≤Nmax; and transmitting the downlink data, to the terminal device, wherein the downlink data is transmitted via a signal transmitted a number of times equals to the actual number of downlink repetitions.

Methods, systems, and devices for wireless communications are described. A device may receive a first packet including a set of segments. A segment of the set of segments may include a cyclic redundancy check (CRC). The device may determine a corruption of one or more segments of the first packet, and process the one or more segments based on the corruption. The device may receive a second packet based on the corruption of the one or more segments of the first packet. The second packet may include one or more of the segments of the first packet. The device may process the one or more segments of the first packet received in the second packet, and transmit a positive acknowledgment indicating a reception of all segments of the set of segments based on the first packet and the second packet.

A method implemented in a first communication node for communicating with a second communication node over an acknowledged connection, comprising: receiving a stream of code blocks from the second communication node, wherein each code block is associated with a check value enabling error detection and belongs to a predefined group of code blocks; detecting errors in received code blocks using respective associated check values; and transmitting to the second communication node an acknowledgement in respect of each of said predefined groups of code blocks, wherein a negative value of the acknowledgment signifies that an error was detected for at least one of the code blocks in the predefined group, wherein the acknowledgement for a predefined group of two or more code blocks is based on a combination of error detection results for a subset of the code blocks in the predefined group.

The present invention relates to a data transmission control method, an information sending end and receiving end, and an aerial vehicle image transmission system. The data transmission control method includes: receiving data frames sent by a sending end, the data frames being sequentially sent by the sending end in an order of a data frame sequence; and returning an acknowledgement signal corresponding to a currently-received data frame N to the sending end, to enable the information sending end to determine a current network status according to the acknowledgement signal, and adjusting data encoding quality of the sent data frame based on the current network status. In the method, delays for image quality and transmission speed to recover when a network status recovers can be effectively reduced by rapidly determining a current network status based on the feedback of an acknowledgement signal.

A method of controlling a data receiving rate by a terminal in a wireless communication system is provided. The method includes determining whether a buffer overflow occurred based on at least one of a remaining capacity of a buffer or a capacity of data stored in the buffer, based on determining that the buffer overflow occurred, performing data discard or a request to stop a data transmission, from a lower entity of the terminal, and requesting data form a base station, in response to the buffer overflow being resolved.

This disclosure describes systems, methods, and devices related to multi-link device (MLD) data continuity. An MLD device may set up one or more links with a station multi-link device (STA MLD), wherein the STA MLD comprises one or more logical entities defining separate station devices. The MLD device may transmit a data packet associated with a traffic identifier (TID) to the STA MLD. The MLD device may determine that the data packet was not received by the STA MLD. The MLD device may retransmit the data packet to the STA MLD. The MLD device may increment a retransmit counter every time the data packet is retransmitted. The MLD device may refrain from transmitting a second data packet until the data packet is dropped or successfully received by the STA MLD.

There is provided mechanisms for decoding a media stream. A method is performed by a packet receiver. The method comprises receiving packets. The packets have been transmitted by a packet transmitter. The packets define the media stream and each packet comprises encoded media. The method comprises decoding the encoded media into at least a first decoded version and a second decoded version. For the first decoded version only a subset of the packets decoded for the second decoded version are decoded. The subset includes only those of the packets that are received within a first threshold time delay from having been Decode encoded media transmitted by the packet transmitter.

Systems and methods are described for streaming content to multiple devices from a shared sliding window buffer in kernel space, thereby reducing memory resource use and minimizing context/mode switching between kernel space and user space. For example, concurrent streaming sessions may be seen, e.g., as a live multimedia stream. If a live video is being transmitted as a multicast stream to many devices, rather than each device having a corresponding sliding window buffer in kernel space, each device will share a shared sliding buffer in kernel space. The sliding window buffer size will be at least large enough to stream the slowest connection speed and can be, e.g., multiple times as large as necessary, in case of the issues beyond the worst-case scenario. The system then transmits chunks of the content from the shared sliding window buffer to each of the plurality of client devices.