Methods, systems, and devices for wireless communications are described. In some examples, a wireless device may modify a cyclic redundancy check (CRC) generation and attachment operation based on a secret key to support enhanced security. In some examples, a first device may identify a set of data to transmit to a second device and prior to transmitting the set of data, the first device and the second device may obtain a set of key bits for data protection. The first device may generate a bit vector based on a subset of the set of key bits and a cyclic redundancy check polynomial. The transmitting device may then generate an encoded codeword based on the bit vector and transmit the encoded codeword to the second wireless device. The second device may decode the encoded codeword and obtain the set of data based on the set of key bits.

A system for serial communication includes a controller, a semiconductor package comprising a plurality of semiconductor die, and a serial interface configured to connect the plurality of semiconductor die to the controller. The serial interface includes a controller-to-package connection and a package-to-controller connection, and the serial interface is configured to employ a signaling protocol using differential data signaling with no separate clock signals.

A method and apparatus for embedding a digital watermark in image content that is not visible to the human eye is performed on single-sensor digital camera images (often called ‘raw’ images) from a pixel-array. The raw image is transformed to generate preprocessed image coefficients, a watermark message is encrypted using a first key; the encrypted watermark message is randomized using a second key to form a watermark; and the watermark is embedded in randomly selected preprocessed image coefficients.

A low-latency, high-bandwidth, and highly scalable method delivers data from a source device to multiple communication devices on a communication network. Under this method, the communication devices (also called player nodes) provide download and upload bandwidths for each other. In this manner, the bandwidth requirement on the data source is significantly reduced. Such a data delivery network is scalable without limits with the number of player nodes. In one embodiment, a computer network includes (a) a source server that provides a data stream for delivery in the computer network, (b) player nodes that exchange data with each other to obtain a complete copy of the data stream, the network nodes being capable of dynamically joining or exiting the computer network, and (c) a control server which maintains a topology graph representing connections between the source server and the player nodes, and the connections among the player nodes themselves. In one embodiment, the control server is associated with a network address (e.g., an IP address) known to both the source server and the player nodes. The data stream may include, for example, a real-time broadcast of a sports event.

There is disclosed a method of operating a wireless device in a wireless communication network, the method comprising transmitting feedback signaling including feedback information, the feedback information being encoded with an error coding scheme, wherein an error coding size of the error coding scheme is dependent on a type of the feedback information. The disclosure also pertains to related devices and methods.

The disclosure discloses a method for transmitting uplink control information. The method includes: receiving, by a user equipment, a carrier activation command or a carrier deactivation command in a downlink subframe n; updating a first downlink activated carrier set according to the received carrier activation command or the carrier deactivation command into a second downlink activated carrier set; taking the second downlink activated carrier set as a current downlink activated carrier set corresponding to a first uplink subframe which belongs to a subframe set of an uplink subframe n+k and uplink subframe(s) after the uplink subframe n+k; sorting X piece(s) of Uplink Control Information (UCI) corresponding to X downlink carrier(s) according to a sorting rule, and transmitting the sorted X pieces of UCI to a base station in the first uplink subframe.

Identifying, by a sender and for each frame i of a plurality of frames of a video stream, a partition of a set of video data symbols D[i] into a first set of video data symbols U[i] and a second set of video data symbols V[i]. Generating, by the sender and for each frame i, a set of one or more streaming forward error correction (FEC) code parity symbols P[i] based on the symbols: V[i−τ] through V[i−1], U[i−τ], and the symbols D[i], wherein τ is a function of a maximum tolerable latency of the video stream expressed as a whole number of frames. Encoding, by the sender and for each frame i, packets carrying the symbols D[i], and P[i]. Transmitting, by the sender, each frame i of encoded packets in frame order to one or more receivers.

An electronic device may detect a message request to send one or more redundant messages to a response network. The one or more messages may contain information previously sent from the electronic device to the response network. The electronic device may determine an entropy factor corresponding to the relatedness of the one or more messages to previously sent messages, and the electronic device may send one or more redundant bits in the place of the one or more messages if the entropy factor is below a threshold value corresponding to network resources.

Asynchronous multi-point transmission techniques for MIMO networks are provided. An example method comprises receiving, by a device comprising a processor, a first data signal from a first TP device of a wireless communication network, wherein the first data signal comprises first code-word information generated based on a data. The method further comprises receiving, by the device, a second data signal from a second TP device of the wireless communication network, wherein the second data signal comprises second code-word generated based on the data, wherein the first code-word information and the second-code word information are different, and wherein the first TP device and the second TP device are geographically separated by a threshold distance. The device can further process the first data signal and the second data signal to generate a unified data signal representative of the data.

A method for the redundant transmission of data by means of light-based communication may include a data stream to be transmitted that is converted into symbols. This data stream is converted from bipolar symbols into multiple partial data streams having e.g. unipolar-positive symbols. The partial data streams are converted into multiple semi-redundant signals that are then transmitted to the receiver via multiple light-based channels. In the receiver, the received signals are converted back again analogously to when they were sent, in order to obtain the original data stream again.