This invention enables data communication that effectively utilizes data received normally or in a correctable manner at a timing which differs from the timing at which each slave communication terminal should receive data. A master communication device of this communication system comprises: a generation unit that generates transmission data consisting of consecutive data to all slave communication devices following one header; and a transmission unit that transmits the transmission data generated by the generation unit at the fastest cycle, among communication cycles requested by the plurality of slave communication devices. Each of the plurality of slave communication devices of the communication system comprises: a storage unit that adds information indicating reliability to data received from the master communication device and stores the same; a comparison unit that compares the reliability of subsequently received data and the reliability of the data stored in the storage unit; and a selection unit that selects the data stored in the storage unit if the reliability of the data stored in the storage unit is higher than the reliability of the data subsequently received by the comparison unit.

Techniques are disclosed for an adaptive and causal random linear network coding (AC-RLNC) with forward error correction (FEC) for a communication channel with delayed feedback. An example methodology implementing the techniques includes transmitting one or more coded packets in a communication channel, determining a channel behavior of the channel, and adaptively adjusting a transmission of a subsequent coded packet in the first channel based on the determined channel behavior. The communication channel may be a point-to-point communication channel between a sender and a receiver. The channel behavior may be determined based on feedback acknowledgements provided by the receiver. The subsequent coded packet may be a random linear combination of one or more information packets.

Methods, systems, and devices for wireless communications are described that allow for a first user equipment (UE) to forward a transmission from a second UE to a base station. The forwarding techniques may include the first UE performing a decoding procedure on a message received from the second UE via a sidelink communications link. Based on the results of the decoding procedure, the first UE may select an amplify and forward (AF), decode and forward (DF), or a combination thereof to forward the message from the second UE to the base station. The base station may receive the forward messages and, in some cases, a message directly from the second UE, and may determine decoding weights to use to jointly decode the two messages received at the base station.

In addition to the normal modulation states of 5G and 6G (BPSK, QPSK, 16QAM, etc.), the modulation scheme may include one or more zero-power states in which an amplitude is transmitted with very low or zero power. The receiver can detect the zero-power state and treat that state as an additional modulation state of the modulation scheme, thereby increasing the information content of each message element due to the additional number of modulation states available for encoding. Alternatively, the zero-power state or states may be used for special options, such as indicating a beginning or an ending of the message. Zero-power states may also be used to separate the message from an associated demodulation reference or to separate sequential messages. Substantial power may be saved since the zero-power states require very little (or no) transmitter power.

Various embodiments provide apparatuses, systems, and methods to determine a figure of merit (FOM) of a communication link (e.g., a serial communication link, also referred to herein as a channel) between a transmitter and a receiver. The FOM may be used to, for example, determine a health of the communication link during mission mode (normal operating mode), determine a modulation scheme to use for the communication link, determine a configuration to use for the receiver and/or transmitter, and/or another suitable use case. Other embodiments may be described and claimed.

Systems and methods for de-interleaving a data of a plurality of Resource Element Groups (REGs) and construct one or more control channel elements (CCEs) in accordance with a CCE to REG mapping include performing operations comprising: obtaining a CCE-to-REG mapping comprising a mapping parameter value for each of one or more mapping parameters; obtaining an interleaved data transmission specifying a Control Resource Set (CORESET); selecting a first CCE, of a set of CCEs, for assembly; for the first CCE: assigning a REG bundle of the interleaved data transmission to the first CCE based on an index value of the REG bundle and the mapping parameter value; extracting the REG bundle of the index value to a memory; and combining the extracted REG bundle with any existing extracted REG bundles to generate an assembled CCE in the memory.

Multi-bit feedback protocol systems and methods are described herein. A method can include correcting, by a sink, an error in a data packet using a multi-bit feedback protocol, the data packet being transmitted over a wireless link to a sink by a source; determining that the multi-bit feedback protocol has failed; and reverting back to an automatic repeat request protocol when the multi-bit feedback protocol has failed.

One coding method of a plurality of coding methods including at least a first coding method and a second coding method is selected, an information sequence is encoded by using the selected coding method, and an encoded sequence obtained by performing predetermined processing on the information sequence is modulated and transmitted. The first coding method is a coding method having a first coding rate, for generating a first encoded sequence by performing puncturing processing on a generated first codeword by using a first parity check matrix. The second coding method is a coding method having a second coding rate, for generating a second encoded sequence by performing puncturing processing on a generated second codeword by using a second parity check matrix that is different from the first parity check matrix, the second coding rate after the puncturing process being different from the first coding rate.

A universal asynchronous receiver/transmitter includes a transmission register to include information to be transmitted, a receive register to include information received, a frame error checking circuit to evaluate contents of the receive register for a frame error, and control logic. The control logic is to route the contents of the transmission register to the receive register. The control logic is to, during transmission of the contents of the transmission register through the reprogrammable pin to the receive register, modify a bit inversion register to yield modified contents to be provided to the receive register. The modified contents are to cause a frame error. The control logic is to determine whether the frame error checking circuit detected the frame error.

Improved techniques for recovering from an error condition without requiring a re-transmittal of data across a high-speed data link and for improved power usage are disclosed herein. A data stream is initiated. This stream includes different types of packets. Error correcting code (ECC) is selectively imposed on a control data type packet. A transmitter node and a receiver node are connected via a hard link that has multiple virtual channels. Each virtual channel is associated with a corresponding power-consuming node. When the receiver node receives the control data type packet, error correction is performed if needed without re-transmittal. When a final data type packet is transmitted for each virtual channel, the transmitter node transmits an end condition type packet. A corresponding power-consuming node that corresponds to the respective virtual channel transitions from an active state to a low power state.