According to one embodiment, a wireless communication device includes a transmitter configured to transmit a first frame including information to specify a plurality of frequency components; and controlling circuitry configured to determine whether a second frame is received via each of the plurality of frequency components. The transmitter is configured to transmit a third frame including first information concerning a first value range which is used to determine whether to respond to the first frame, the first value range being dependent on a number of frequency components via which the second frame has been received.

Certain aspects of the present disclosure provide techniques for channel estimation for two-stage sidelink control using sidelink data channel demodulation reference signals (DMRS). A user equipment (UE) can transmit DMRS for the sidelink data channel. The UE may transmit the second stage of the sidelink control using antenna ports or a precoder used for the sidelink data channel. The receiving device may receive the DMRS, estimate the channel, and demodulate the second stage of the sidelink control based on the estimated channel. The receiving device may flexibly determine the DMRS to use for the estimation and demodulation.

The present disclosure includes systems, devices, and methods that provide a control signaling transmission method. One example method includes: determining a resource subset used to transmit control signaling, where the resource subset is a part of a resource pool used to transmit the control signaling; and performing one of the following operations: determining a transmission location of the control signaling in the resource subset and sending the control signaling at the transmission location, or performing blind control signaling detection in the resource subset.

Aspects presented herein may enable a wireless device to use periodic reserved resources to serve aperiodic traffic over sidelink. In one aspect, a wireless device reserves a set of periodic resources for sidelink transmission, where the reserved set of periodic resources include reserved resources for SCI and reserved resources for data. The wireless device transmits SCI without a data transmission in a periodic resource for the period. In another aspect, a first wireless device receives a reservation from a second wireless device for a set of periodic resources for sidelink transmission. The first wireless device receives, from the second wireless device, SCI in a period of the periodic resources, the SCI including an indication that the SCI is not associated with a data transmission.

A method, performed by a network node, is disclosed, for configuring resources to be used for Wake-Up Signal, WUS, transmission to a plurality of wireless device groups in the communications network. The method comprises obtaining a number of wireless device groups supported by the communications network. The method comprises allocating, based on the obtained number of wireless device groups supported by the communications network, one or more active resources, out of a set of available resources, for WUS for the number of wireless device groups. The method comprises determining, based on a set of resource configuration criteria, a WUS resource configuration defining a mapping of the wireless device groups to the determined one or more active resources. The method comprises providing, to the wireless device, a set of resource configuration parameters indicative of the determined WUS configuration.

Disclosed are a method and device for a first terminal to transmit a positioning reference signal (PRS) through a physical sidelink feedback channel (PSFCH) in a wireless communication system supporting sidelink communication according to various embodiments. Disclosed are a method and device, wherein the method comprises the steps of: allocating a first frequency resource region for a PRS within a resource region for the PSFCH so that the PRS is multiplexed with a feedback signal; transmitting allocation information on the first frequency resource region; and transmitting the PRS and the feedback signal through the PSFCH on the basis of the allocation information, wherein the size of the first frequency resource region is determined on the basis of the size of a pre-configured frequency resource for the feedback signal and the type of the multiplexing, and the allocation information includes information on the multiplexing type, the size of the first frequency resource region, and the start frequency of the first frequency resource.

This application discloses a signal transmission method and a related device. The method may include: sending, by a first terminal, a first message to a network device, where the first message is used to indicate a transmission mode used by the first terminal to transmit a signal; receiving a second message sent by the network device, where the second message is used to indicate a resource used by the first terminal to transmit the signal; and transmitting the signal on the resource. According to the foregoing solution, a terminal may transmit a signal by using different transmission modes and resources.

Wireless communications systems and methods related to communicating uplink control information (UCI) in a network operating over multiple aggregated unlicensed carriers are provided. A first wireless communication device communicates, with a second wireless communication device, a downlink communication signal. The first wireless communication device communicates, with the second wireless communication device, an unscheduled uplink communication signal including an uplink report associated with the downlink communication signal, the unscheduled uplink communication signal communicated based on a listen-before-talk (LBT) procedure. The uplink report includes at least one of an acknowledgement (ACK) for data in the downlink communication signal, a negative-acknowledgement (NACK) for the data in the downlink communication signal, or channel information based at least on the downlink communication signal.

A method for processing a sidelink communication operation in a wireless communication network includes: for a sidelink operation to be performed, obtaining symbol types of target symbols, the target symbols including time domain symbols where a sidelink resource used by the sidelink operation is located; and if the symbol types of the target symbols indicate that a flexible time domain symbol exists in the target symbols, processing the sidelink operation according to the sidelink operation and an uplink/downlink operation in the flexible time domain symbol.

A method for operating a first device (100) in a wireless communication system is proposed. The method may comprise: a step of receiving information related to a sync resource from a base station (300); a step of receiving, from a second device (200), a first sidelink synchronization signal block (S-SSB) through a first resource; a step in which the first S-SSB comprises at least one symbol related to a sidelink primary synchronization signal (S-PSS), at least one symbol related to a sidelink secondary synchronization signal (S-SSS), and at least one symbol related to a physical sidelink broadcast channel (PSBCH); and a step of obtaining slot information related to the first S-SSB.