The present disclosure relates to a wireless communication system. Specifically, provided is a method and an apparatus for supporting same, the method comprising the steps of obtaining random access procedure-related message A, message A including a physical random access channel (PRACH) preamble and a physical uplink shared channel (PUSCH); transmitting message A; and receiving random access procedure-related message B as a response to message A, wherein the PUSCH comprises a demodulation reference signal (DM-RS), and PRACH preamble is mapped to (i) one or more DM-RS ports and (ii) one or more DM-RS sequences on the basis of indices of respective (i) one or more DM-RS ports and indices of respective (ii) one or more DM-RS sequences.

Aspects are provided which enhance receiver performance of PDCCH by allowing a base station to associate a configured PDSCH CSI-RS with a PDCCH for channel estimation and reception by a UE. A UE receives a reference signal associated with a physical downlink shared channel (PDSCH) from a base station, and uses the reference signal to receive a physical downlink control channel (PDCCH) and/or measure the PDCCH and feedback a corresponding channel measurement for the PDCCH. A base station configures a reference signal associated with a PDSCH for transmission of a PDCCH and/or reception of a corresponding channel measurement for the PDCCH as feedback from the UE, and transmits the reference signal to the UE.

The present invention provides a method performed by user equipment, and user equipment. The method includes: determining sidelink resource pool configuration information; and determining the number Q′.sub.SCI2 of coded modulation symbols of second stage SCI. The second stage SCI is second stage sidelink control information carried by a physical sidelink shared channel (PSSCH).

The present disclosure provides a method and a device in a node for wireless communications. A first node determines a first resource set and a first resource set group from M resource sets; and monitors a first-type channel in the first resource set group in a first time window. Any two of the M resource sets are overlapping in time domain, and the first resource set group comprises the first resource set; any of the M resource sets is linked to one or two spatial states; a second resource set is any of the M resource sets different from the first resource set; whether a first condition is fulfilled is used to determine whether the second resource set belongs to the first resource set group. The above method avoids performance loss resulting from the UE's unnecessary abandonment of monitoring over some PDCCH candidates.

A transmitting method includes: configuring a frame using a plurality of orthogonal frequency-division multiplexing (OFDM) symbols, by allocating time resources and frequency resources to a plurality of transmission data; and transmitting the frame, wherein the frame includes a first period in which a preamble which includes information on a frame configuration of the frame is transmitted, and a second period in which the plurality of transmission data are transmitted by at least one of time division and frequency division, and among the plurality of OFDM symbols, OFDM symbols included in the second period include pilot symbols arranged along a time axis with a predetermined spacing therebetween, and a predetermined number of data symbols.

The present invention relates to a method of transmitting a Medium Access Control (MAC) Protocol Data Unit (PDU) by a user equipment (UE) in a wireless communication system. Especially, the method includes the steps of generating a first MAC PDU including at least one MAC Control Element (CE) and a first data; receiving an uplink grant for transmitting a second data, wherein a transmission time of the first data overlaps with a transmission time of the second data, and wherein a priority of the second data is higher than a priority of the first data; generating a second MAC PDU including the at least one MAC CE and the second data; and transmitting the second MAC PDU.

Methods and apparatuses for signal transmission and reception are provided for a wireless communication system. Information for configuring a plurality of physical uplink control channel (PUCCH) resources is transmitted to a terminal. Downlink control information (DCI) is transmitted to the terminal on a physical downlink control channel (PDCCH). The DCI includes a resource indicator for indicating a PUCCH resource among the plurality of PUCCH resources. Uplink control information (UCI) is received from the terminal on the PUCCH resource indicated by the resource indicator.

According to an example embodiment, an example method may include determining, by a network node in a wireless network, whether a size of a data packet is greater than a threshold size; transmitting, by the network node, the data packet via a frequency interlace if the size of the data packet is less than or equal to the threshold size; transmitting, by the network node, the data packet via contiguous wideband frequency resources if the size of the data packet is greater than the threshold size.

Provided are a method and apparatus for determining information, a method and apparatus for determining corresponding relationship, a device, and a medium. The method for determining the corresponding relationship includes determining a first corresponding relationship according to at least one of signaling information or a predetermined rule. The first corresponding relationship includes at least one of the following: a corresponding relationship between N pieces of third information and M sets of beam failure recovery parameters or a corresponding relationship between a first-type frequency domain bandwidth group and a second-type frequency domain bandwidth group. N and M are each a positive integer greater than or equal to 1. A piece of third information includes at least one of the following: a control resource set (CORESET) group or a frequency domain bandwidth group.

Provided are a channel conflict processing method and apparatus, a device, and a storage medium. The channel conflict processing method includes: in the case where a transmission resource on a high-priority uplink channel of a UE and a transmission resource on a low-priority uplink channel of the UE overlap in time domain, determining the start position for transmission cancellation of the low-priority uplink channel; and canceling the transmission resource on the low-priority uplink channel according to the start position for transmission cancellation.