Abstract:
A method and apparatus for Sidelink (SL) Discontinuous Reception (DRX) operation based on resource allocation is provided. A first wireless device, e.g., receiving user equipment (RX UE), monitors first Physical Sidelink Control Channel (PSCCH) transmissions from a second wireless device, e.g., transmitting UE (TX UE), in a Sidelink (SL) active time for SL Discontinuous Reception (DRX). The first wireless device receives, from the second wireless device, an indication to reselection of sidelink resources, and adjusts the SL active time based on the indication. The first wireless device monitors second PSCCH transmissions from the second wireless device in the adjusted SL active time.
Abstract:
According to an embodiment of the present disclosure, a method for performing sidelink communication is provided. The method may include: receiving sidelink control information (SCI) from a second apparatus and transmitting hybrid automatic repeat request negative acknowledgement (HARQ NACK) to the second apparatus through physical sidelink feedback channel (PSFCH) based on information on a location of the first apparatus being not available and HARQ NACK-only feedback option being applied by the SCI, wherein a transport block (TB) related to the SCI is not decoded by the first apparatus.
Abstract:
A method for transmitting uplink control information and an apparatus therefor are disclosed. In a method for transmitting uplink control information using a physical uplink shared channel (PUSCH) in a wireless communication system, the method is performed by a terminal and includes receiving downlink control information including an accumulated number of physical downlink shared channels (PDSCH) transmissions associated with a cell group configured for the terminal, coding the uplink control information using the accumulated number of PDSCH transmissions, and transmitting the coded uplink control information using the PUSCH.
Abstract:
According to an aspect of the present invention, a method for receiving a downlink signal from a base station (BS) in a multicast broadcast single frequency network (MBSFN) subframe which performed by a user equipment (UE) includes receiving information indicating an MBSFN subframe of which a data region is allocated a cell-specific reference signal (CRS), among MBSFN subframes, and demodulating the downlink signal received in the data region of the MBSFN subframe based on the CRS in the data region of the MBSFN subframe according to the information.
Abstract:
The present disclosure relates to handling resource collision in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: detecting a failure related to at least one of a listen-before-talk (LBT) failure or a beam failure; triggering a scheduling request (SR) for the failure; and based on that a first resource for a transmission of the SR for the failure overlaps with a second resource for a sidelink transmission: transmitting, to a network, the SR for the failure on the first resource; and dropping the sidelink transmission on the second resource.
Abstract:
A method and apparatus for allocation of Hybrid Automatic Repeat request (HARQ) identifiers (IDs) to different User Equipments (UEs) and/or different destinations is provided. A wireless device initializes or re-initializes a configured sidelink grant to determine Physical Sidelink Control Chanel (PSCCH) durations and Physical Sidelink Shared Channel (PSSCH) durations based on a Configured Grant (CG) time offset, and to reoccur with an CG period for transmissions of multiple Media Access Control (MAC) Protocol Data Units (PDUs). The CG time offset is an offset of a resource with respect to a particular System Frame Number (SFN) value and defined as the number of logical slots that can be included in a sidelink resource pool.
Abstract:
A method and apparatus for discontinuous reception (DRX) of downlink signal for sidelink transmission is provided. A wireless device operating in a wireless communication system monitors a physical downlink control channel (PDCCH) carrying a sidelink grant during an active time including a time interval for which a scheduling request (SR) is transmitted on a physical uplink control channel (PUCCH) and is pending, based on the SR being triggered for a sidelink buffer status report (SL BSR) and/or a sidelink channel state information (SL CSI) reporting.
Abstract:
A method and apparatus for bandwidth parts (BWPs) deactivation and discontinuous reception (DRX) for communication between wireless devices is provided. A first wireless device operating in a wireless communication system performs transmission of a media access control (MAC) protocol data unit (PDU) to a second wireless device, and starts a discontinuous (DRX) hybrid automatic repeat request (HARQ) round trip time (RTT) timer for a HARQ process ID after end of a specific repetition of the transmission of the MAC PDU. The first wireless device starts a DRX retransmission timer based on 1) the DRX HARQ RTT timer being expired, and 2) a number of transmissions of the MAC PDU not reaching a maximum number of transmissions, and monitors a physical downlink control channel (PDCCH) carrying a sidelink retransmission grant during an active time including a time interval for which the DRX retransmission timer is running.
Abstract:
A method and apparatus for allocating resources for a sidelink transmission in a wireless communication system is provided. A user equipment (UE) selects a first carrier, i.e. anchor carrier, among multiple carriers, and allocates a first resource on the first carrier. The UE allocates a second resource on a second carrier, i.e. non-anchor carrier, based on an offset from the first resource on the first carrier. The UE performs the sidelink transmission by using the first resource on the first carrier and the second resource on the second carrier.
Abstract:
A network node in a new radio access technology (RAT)configures a fixed resource on which transmission direction is fixed and a flexible resource on which transmission direction is changeable, and transmits a single channel which is mapped to the fixed resource and the flexible resource. The single channel may be divided into a first mini channel which is mapped to the fixed resource and a second mini channel which is mapped to the flexible resource.