Methods, systems, and devices for wireless communications are described. A base station and a user equipment (UE) may communicate in a high reliability and low latency communications system (e.g., ultra-reliable low latency communications (URLLC)). The base station may signal a UE-specific scheduling request (SR) repetition configuration that the UE may utilize to transmit an instantaneous SR when a buffer status report (BSR) is triggered by a new data packet. The UE may repeatedly transmit the SR until a number of repetitions or a time period of repetitions is met or an uplink grant is received from the base station. The SR repetition configuration may include a number of parameters including a repetition setting, power settings, a resource allocation, and an acknowledgement/negative acknowledgment (ACK/NACK) procedure.

Systems, methods, and circuitries are provided for performing sidelink communication. An example method includes receiving, via frequency and time resources of a physical sidelink shared channel (PSSCH), from a second UE, a signal encoding a sequence of bits corresponding to sidelink control information (SCI) stage 2; decoding the sequence of bits based on a SCI stage 2 scrambling initialization value (Cinit) to generate SCI stage 2 for a transport block (TB), wherein Cinit is determined based on at least a portion of a physical sidelink control channel (PSCCH) cyclic redundancy check (CRC) code; and receiving the TB from the first UE based on the SCI stage 2.

PBCH design may affect timing indication in a wireless network and polar code interleaver design, among other things. Mechanisms may indicate half frame timing though de modulation reference signal sequence initialization, de-modulation reference signal mapping order, or de-modulation reference signal resource element location.

A system includes a first node, a second node, and a third node, wherein the first node establishes a wireless communication link with the second node to perform wireless communication, and forwards connection information of the wireless communication to the third node; and the third node receives, by listening on the wireless communication link based on the connection information, transmission data sent by the second node to the first node. If an error occurs when the third node receives the transmission data sent by the second node to the first node, the third node interferes with the first node's reception of the transmission data sent by the second node, so that an error is caused when the first node receives the transmission data sent by the second node, and the second node is triggered to perform retransmission.

The present disclosure relates to a wireless communication system and, more particularly, to a method and an apparatus therefor, the method comprising the steps of: detecting an SSB in an unlicensed band, the SSB including an index related to a CORESET configuration; determining, on the basis of the index, an RB offset used for identifying the position of a CORESET frequency associated with the SSB; and monitoring the CORESET in the unlicensed band on the basis of the RB offset.

Methods, systems, and devices for wireless communications are described. A base station and a user equipment (UE) may communicate in a high reliability and low latency communications system (e.g., ultra-reliable low latency communications (URLLC)). The base station may signal a UE-specific scheduling request (SR) repetition configuration that the UE may utilize to transmit an instantaneous SR when a buffer status report (BSR) is triggered by a new data packet. The UE may repeatedly transmit the SR until a number of repetitions or a time period of repetitions is met or an uplink grant is received from the base station. The SR repetition configuration may include a number of parameters including a repetition setting, power settings, a resource allocation, and an acknowledgement/negative acknowledgment (ACK/NACK) procedure.

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.

This application provide a control information transmission method, an apparatus, and a system. One example method includes: A first terminal device receives, from a network device, DCI used for indicating a BWP. A quantity of bits in the DCI is a fixed quantity of bits. The DCI is used for scheduling a physical data channel. The BWP is used to transmit the physical data channel.

A method of transmitting data by a terminal device operating in a wireless communications system comprising a non-terrestrial network access node and the terminal device, comprises the terminal device receiving an indication of an initial value of a set of one or more communications parameters for transmitting radio signals carrying the data, and modelling a state of a communications channel from the terminal device to a non-terrestrial network access node, in which a link adaptation procedure is used to select a revised value of the set of the one or more communications parameters with respect to the initial value of the set of the one or more communications parameters for the modelled channel state, and the method includes adapting the value of the set of the one or more communications parameters according to the revised value.

Apparatuses, methods, and systems are disclosed for rate-matching a data transmission around resources. One method includes: receiving a downlink control channel (“DCC”) transmission in a predetermined time period; determining a first DCC candidate (“DCCC”) based on the downlink control channel transmission; determining whether the first DCCC belongs to a plurality of DCCCs associated with the DCC transmission, wherein the plurality of DCCCs carry the same downlink control information (“DCI”); in response to determining that the first DCCC belongs to the plurality of DCCCs: determining a second DCCC; and determining the DCI by decoding the first and the second DCCCs; in response to determining that the first DCCC does not belong to the plurality of DCCCs: determining the DCI by decoding the first DCCC; and determining downlink resources corresponding to a data transmission; and rate-matching the data transmission.