Wireless communications systems and methods related to transmission of reverse-link grants for anchor based sidelink communication are provided. A first user equipment (UE) determines a plurality of reverse-link grants for a respective plurality of UEs. The first UE transmits first sidelink control information (SCI) over a physical sidelink control channel (PSCCH). The first SCI may indicate whether user data follows in the physical sidelink shared channel (PSSCH). The first UE transmits a demodulation reference signal (DMRS) and second SCI over the PSSCH. The second SCI comprises the plurality of reverse-link grants in a block. The second SCI is rate matched from a with the DMRS and the third SCI being rate matched from the start of the PSSCH and including the block of reverse-link grants.

Wireless communications systems and methods related to transmission of reverse-link grants for anchor based sidelink communication are provided. A first user equipment (UE) determines a plurality of reverse-link grants for a respective plurality of UEs. The first UE transmits first sidelink control information (SCI) over a physical sidelink control channel (PSCCH). The first SCI may indicate whether user data follows in the physical sidelink shared channel (PSSCH). The first UE transmits a demodulation reference signal (DMRS) and second SCI over the PSSCH. The second SCI comprises the plurality of reverse-link grants in a block. The second SCI is rate matched from a with the DMRS and the third SCI being rate matched from the start of the PSSCH and including the block of reverse-link grants.

Provided may be a method of supporting, by a user equipment (UE), sidelink communication in a wireless communication system. The method. of supporting, by the UE, sidelink communication in the wireless communication system may include receiving a coordination request from a transmitting UE (Tx UE); generating a coordination message based on the coordination request; and transmitting the generating coordination message to the Tx UE. Here, the coordination request may include 1-bit information and the coordination request may be received based on at least one of a physical resource set of Physical Sidelink Feedback Channel (PSFCH), a Sidelink Control Information (SCI) format, Cyclic Redundancy Checking (CRC) scrambling, and a Demodulation Reference Signal (DMRS) sequence, and the Tx UE may perform resource reselection based on the coordination message.

Provided may be a method of supporting, by a user equipment (UE), sidelink communication in a wireless communication system. The method. of supporting, by the UE, sidelink communication in the wireless communication system may include receiving a coordination request from a transmitting UE (Tx UE); generating a coordination message based on the coordination request; and transmitting the generating coordination message to the Tx UE. Here, the coordination request may include 1-bit information and the coordination request may be received based on at least one of a physical resource set of Physical Sidelink Feedback Channel (PSFCH), a Sidelink Control Information (SCI) format, Cyclic Redundancy Checking (CRC) scrambling, and a Demodulation Reference Signal (DMRS) sequence, and the Tx UE may perform resource reselection based on the coordination message.

In 5G/New Radio (NR), sidelink communication refers to a channel for communications directly between devices, e.g., user equipment (UEs), without use of traditional uplink or downlink communication channels. Sidelink Control Information (SCI) is separated into two stages (i.e., SCI stage 1 and SCI stage 2) before being transmitted to configure a user device. A method for configuring sidelink communications for a wireless device includes: obtaining SCI Stage 2 payload information; attaching and distributing cyclic redundancy check (CRC) information to the payload information; performing encoding and rate matching (RM) on the payload information; scrambling the encoded and rate matched payload information; performing modulation on the scrambled payload information; determining a resource mapping for the modulated payload information, wherein the modulated payload information is aggregated across two or more slots (e.g., using different processing operations for at least two slots); and transmitting the modulated payload information according to the determined resource mapping.

In 5G/New Radio (NR), sidelink communication refers to a channel for communications directly between devices, e.g., user equipment (UEs), without use of traditional uplink or downlink communication channels. Sidelink Control Information (SCI) is separated into two stages (i.e., SCI stage 1 and SCI stage 2) before being transmitted to configure a user device. A method for configuring sidelink communications for a wireless device includes: obtaining SCI Stage 2 payload information; attaching and distributing cyclic redundancy check (CRC) information to the payload information; performing encoding and rate matching (RM) on the payload information; scrambling the encoded and rate matched payload information; performing modulation on the scrambled payload information; determining a resource mapping for the modulated payload information, wherein the modulated payload information is aggregated across two or more slots (e.g., using different processing operations for at least two slots); and transmitting the modulated payload information according to the determined resource mapping.

A terminal includes a controller configured to identify a resource that is included in a time domain in which a first channel used for transmitting a response related to retransmission control is allocated, and that is included in a frequency domain that is not used for transmitting the first channel; and a transmitter configured to transmit a second channel or a signal by using the resource.

A transmission or reception configuration method includes: executing, according to first transmission or reception configuration information, a target behavior in a time resource configured by the first transmission or reception configuration information. The first transmission or reception configuration information is at least one set of transmission or reception configuration information in N sets of transmission or reception configuration information.

A method for determining PSFCH resources, a method for configuring PSFCH resources, and a communications device, and the method for determining PSFCH resources includes: determining PSFCH resources in a target object based on obtained PSFCH resource configuration information, where the target object includes at least one of the following: a carrier, a bandwidth part BWP, and a resource pool, and the PSFCH resources include PSFCH transmission resources, or PSFCH reception resources, or both PSFCH transmission resources and PSFCH reception resources; and performing a target operation on feedback information on the PSFCH resources, where the target operation includes at least one of a reception operation and a transmission operation.

A user equipment and a method of resource allocation of the same are provided. The method includes performing monitoring on slots of a resource pool, excluding one or more sidelink resources from a candidate resource set in the resource pool, and selecting one or more sidelink resources using a timing based selection from the remaining candidate resource set or a resource selection window in the resource pool. This reduces risk of a pre-selected resource being taken-over or reserved by others and/or allows flexibility in a sidelink control information (SCI) signaling to be able to provide early indication/reservation of future sidelink resources, and subsequently improves overall system performance.