A method and apparatus are disclosed. The apparatus comprises a wireless transceiver and a processor. The apparatus performs wireless communications with a primary cell, receives a message via a shared channel of the primary cell, wherein the received message includes information identifying a plurality of non-primary cells, monitors downlink channels of the identified plurality of non-primary cells based on the received message, and receives data over a downlink channel of at least one of the identified plurality of non-primary cells based on the monitored downlink channels.

A method for performing wireless communication by a first device and a device for supporting same are provided. The method may comprise the steps of: receiving, from a first base station, information related to a first sidelink (SL) resource and information related to a first uplink (UL) resource; determining whether to perform SL transmission on the first SL resource; and on the basis of the determination prohibiting performing of the SL transmission on the first SL resource, transmitting NACK information to the first base station on the first UL resource by the first device.

Example embodiments of the present disclosure relate to a solution for configuring a retransmission in communications. In an aspect, a first device transmits, to a second device, a first indication of a plurality of candidate retransmission configurations. Each of the plurality of candidate retransmission configurations includes a transmission feedback configuration and/or a data retransmission configuration. The first device selects a target retransmission configuration from the plurality of candidate retransmission configurations. The first device transmits, to the second device, a second indication of the target retransmission configuration. The first device communicates with the second device using the target retransmission configuration. The example embodiments of the present disclosure provide a dynamical multi-level indication for a retransmission scheme.

Provided are a method for performing wireless communication by a first apparatus, and an apparatus for supporting same. The method may comprise the steps of: receiving, from a first base station, information associated with a sidelink (SL) bandwidth part (BWP); receiving, from the first base station, information associated with an uplink (UL) BWP; receiving, from the first base station, information associated with a first SL resource and information associated with a first UL resource for reporting hybrid automatic repeat request (HARQ) feedback; determining not to perform SL transmission on the basis of the first SL resource on the SL BWP; and on the basis of determining, by the first apparatus, not to perform the SL transmission on the basis of the first SL resource, transmitting, to the first base station, HARQ NACK on the basis of the first UL resource on the UL BWP.

A terminal includes a receiving unit that receives information for scheduling a first resource used for inter-terminal direct communication, information for scheduling a second resource used for a communication with a base station, and data through the second resource, from the base station; and a transmitting unit that transmits data to another terminal using the first resource, wherein the receiving unit receives a first response related to retransmission control corresponding to the transmitted data from the another terminal, wherein the terminal further includes a control unit that determines a third response related to retransmission control based on the first response and a second response related to retransmission control corresponding to the data through the second resource, and wherein the transmitting unit transmits the third response to the base station.

Provided are a method for a first device to perform wireless communication, and a device supporting same. The method may include the steps of: receiving first downlink control information (DCI), including information related to a first physical uplink control channel (PUCCH) resource and information related to sidelink (SL) resource allocation, from a base station through a first physical downlink control channel (PDCCH); transmitting a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) to a second device on the basis of the information related to the SL resource allocation; receiving SL hybrid automatic repeat request (HARQ) feedback from the second device through a physical sidelink feedback channel (PSFCH) related to the PSSCH; receiving second DCI, including information related a second PUCCH resource and information related to downlink (DL) resource allocation, from the base station through a second PDCCH; receiving a physical downlink shared channel (PDSCH) related to the second PDCCH from the base station on the basis of information related to the DL resource allocation; and transmitting, on at least one of the first PUCCH resource or the second PUCCH resource, at least one of the SL HARQ feedback or HARQ feedback related to the PDSCH to the base station. Here, the first PUCCH resource and the second PUCCH resource may overlap in the time domain.

The present disclosure relates to a communication method and system for converging a 5.sup.th-Generation (5G) communication system for supporting higher data rates beyond a 4.sup.th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method performed by a first terminal in a communication system is provided. The method includes transmitting data of a physical side link shared channel (PSSCH) and sidelink control information (SCI) associated with the data, and receiving, from a second terminal, a hybrid automatic repeat request (HARQ) feedback for the data, wherein the HARQ feedback is performed based on a distance between the first terminal and the second terminal, in case that the SCI includes location information of the first terminal.

Apparatuses, methods, and systems are disclosed for indicating data status to a target base unit. One apparatus includes a transceiver that communicates with a remote unit and a processor that determines to perform a conditional handover of the remote unit to a target base unit. The processor sends a conditional handover command to the remote unit, the conditional handover command including at least one condition the remote unit is to monitor for fulfillment prior to handing over to the target base unit. The processor receives uplink data from the remote unit after sending the conditional handover command and forwards the uplink data to the target base unit. The processor also sends an end marker to the target base unit in response to completing the forwarding of the uplink data.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system with a technology for Internet of Things (IoT). Methods and apparatuses are provided in which first sidelink data and second sidelink data are received from one or more terminals. It is determined whether a first resource for transmitting first feedback information for the first sidelink data and a second resource for transmitting second feedback information for the second sidelink data overlap each other. When the first resource and the second resource overlap each other, feedback information corresponding to one of the first feedback information and the second feedback information having a higher priority, is transmitted to the one or more terminals. A priority of each of the first feedback information and the second feedback information is based on sidelink control information scheduling each of the first sidelink data and the second sidelink data.

A method implemented by a first device includes receiving a channel state information (CSI) reporting configuration associated with a set of measurement resources and a time-interval configuration, the set of measurement resources comprising at least interference measurement resources, and the time-interval configuration specifying a measurement duration and a reporting time configuration; deriving CSI reporting quantities in accordance with measurements of the set of measurement resources during at least a portion of the measurement duration, the CSI reporting quantities comprising statistical quantities associated with at least interference measurements of the set of measurement resources during the measurement duration; and reporting the CSI reporting quantities in accordance with the reporting time configuration.