H04L1/1893

BEAM SWITCHING UPON NEGATIVE ACKNOWLEDGEMENT RECEPTION

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a measurement report based at least in part on a set of measurements of one or more reference signals received using a set of candidate beams; transmit a negative acknowledgement for a downlink transmission scheduled for one or more beams of the set of candidate beams; and monitor one or more new beams of the set of candidate beams for a retransmission of the downlink transmission. Numerous other aspects are provided.

METHOD AND APPARATUS FOR TRANSMITTING DATA UNIT USING PRECONFIGURED UPLINK RESOURCES IN WIRELESS COMMUNICATION SYSTEM
20230050167 · 2023-02-16 · ·

The present invention relates to a method of transmitting a data unit by a user equipment (UE) in a wireless communication system. Especially, the method includes the steps of configuring a first pre-configured uplink (UL) resources (PUR) group and a second PUR group, wherein the first PUR group is used for data transmission not requiring the network feedback and the second PUR group is used for data transmission requiring the network feedback; generating the data unit to be transmitted to a network; selecting one of the first PUR group and the second PUR group based on whether a transmission of the data unit requires a feedback response of the data unit or not; selecting one of PURs belonging to the selected PUR group; and transmitting the data unit to the network on a UL resource belonging to the selected PUR.

DEVICE AND METHOD FOR LISTEN-BEFORE-TALK RANDOM ACCESS WITH ADAPTIVE ENERGY DETECTION THRESHOLD SELECTION
20230051144 · 2023-02-16 · ·

A method for listen-before-talk random access with adaptive energy detection threshold selection is executed by a device. Component units, such as code block groups (CBGs) in a transport block are determined to be retransmitted through a contention-based random access operation. A component unit based energy detection threshold (EDT) is selected. The EDT is associated with the component units determined to be retransmitted. The selected component unit based EDT is used to perform energy detection in an initial contention-based random access operation.

Reliable Transmission of Multicast and Broadcast Services

A wireless device receives parameters comprising a radio network temporary identifier (RNTI) associated with a multicast and broadcast service (MBS) session; a first scrambling identity associated with the MBS session; and a second scrambling identity associated with unicast transmissions. The wireless device receives, based on the RNTI, a group common downlink control information (DCI) scheduling a transport block (TB) of the MBS session. Based on the group common DCI being received based on the RNTI, the wireless device determines a scrambling identity for the TB being equal to the first scrambling identity, and receives the TB being scrambled with a scrambling sequence initialized by the determined scrambling identity and the RNTI.

Radio (NR) multicast feedback switching

Wireless communications systems and methods related to acknowledgement/negative-acknowledgement (ACK/NACK) feedback operations for multicast communications are provided. A first user equipment (UE) receives, from a base station (BS), a multicast feedback configuration indicating a first resource configuration for a negative-acknowledgement (NACK) feedback mode; and a second resource configuration for an acknowledgement/negative-acknowledgement (ACK/NACK) feedback mode. The first UE receives, from the BS, a first multicast communication. The first UE transmits, to the BS, a NACK feedback for the first multicast communication based on the first resource configuration. The first UE receives, from the BS, a second multicast communication. The first UE transmits, to the BS, an ACK feedback or a NACK feedback for the second multicast communication based on the second resource configuration.

Superposition of sidelink and uplink transmissions

Methods, systems, and devices for wireless communications are described. A first user equipment (UE) in a wireless communications system, such as a vehicle-to-everything (V2X) communications systems, may communicate over sidelink to other UEs. The first UE may receive, from a base station, control signaling indicating a sidelink resource pool allocated for sidelink communication between the first UE and a second UE. The first UE may transmit an indication that superposition coding may be used to generate a concurrent sidelink and uplink transmission. The first UE may then transmit the concurrent sidelink and uplink transmission within a resource of the sidelink resource pool based on the indication. The second UE may decode the sidelink portion of the transmission, and the base station may decode the uplink portion of the transmission.

Frequency Hopping in Multiple Transmission and Reception Points

A wireless device receives one or more configuration parameters indicating a mapping pattern that indicates a cyclical mapping of spatial domain transmission filters to physical uplink shared channel (PUSCH) repetitions. The wireless device receives a downlink control information (DCI) scheduling repetitions of a PUSCH transmission, where the DCI comprises a frequency hopping field set to one and indicates a frequency offset. Based on the frequency hopping field being set to one and the mapping pattern indicating the cyclical mapping, the wireless device sequentially transmits, starting from a first resource block, a first repetition of the PUSCH transmission using a first spatial domain transmission filter and a second repetition using a second spatial domain transmission filter; and sequentially transmits, starting from a second resource block, a third repetition using the first spatial domain transmission filter and a fourth repetition using the second spatial domain transmission filter.

USER EQUIPMENT (UE)-ASSISTED SEMI-PERSISTENT SCHEDULING (SPS) AND HYBRID AUTOMATIC REPEAT REQUEST (HARQ)-FEEDBACK SKIPPING FOR UE TRIGGERED DOWNLINK (DL) TRANSMISSIONS

This disclosure provides systems, methods, and devices for wireless communication that support mechanisms for semi-persistent scheduling (SPS) and hybrid automatic repeat request (HARQ) feedback skipping for user equipment (UE)-initiated transmissions. A UE configured for extended reality (XR) operations and an SPS configuration including a plurality of SPS occasions, each SPS occasion configured with at least one downlink resource and at least one uplink resource, collects pose information related to at least one SPS occasion. The UE determines, based on the pose information, to skip at least one SPS occasion. The UE sends an indication of the determination to skip the at least one SPS occasion to a base station. The indication is transmitted in a preconfigured uplink resource or may be piggyback an uplink transmission. The base station may reallocate the resources configured for the at least one SPS occasion based on receiving the indication.

USER EQUIPMENT AND METHOD FOR TIMING ALIGNMENT
20230044028 · 2023-02-09 ·

A method and a user equipment (UE) for timing alignment is provided. The method includes maintaining a Timing Advance (TA) value as a first TA value; receiving, from a Base Station (BS), a TA command during a Random Access (RA) procedure; applying the TA command to set the TA value to a second TA value included in the TA command in a case that a first timing alignment timer is not running; determining whether a contention resolution for the RA procedure is successful; and when the contention resolution is not successful, setting the TA value to the first TA value in a case that a Configured Grant-based Small Data Transmission (CG-SDT) procedure is ongoing.

RESOURCE DETERMINATION METHOD AND APPARATUS, NODE AND STORAGE MEDIUM
20230011377 · 2023-01-12 ·

A resource determination method and apparatus, a node and a non-transitory computer-readable storage medium are disclosed. The method may include: acquiring, by a first communication node, configuration information configured by a second communication node; and selecting, by the first communication node, a target resource among a plurality of pre-configured resources according to the configuration information, where the pre-configured resources are time and frequency domain resources configured by the second communication node.