A physical sidelink feedback information determining method and a communication device are provided. The method includes: determining target physical sidelink feedback information according to a target sidelink channel transmission resource associated with a target uplink channel, where the target sidelink channel transmission resource is determined according to a first time interval, and the first time interval is a time interval between the target sidelink channel transmission resource and the target uplink channel.

This disclosure relates to techniques for configuring physical uplink shared channel transmissions with improved reliability in a wireless communication system. A cellular base station may establish a wireless link with a wireless device. The cellular base station may provide uplink data transmission configuration information to the wireless device. The uplink data transmission configuration information may configure an uplink data transmission to multiple transmission-reception-points. The cellular base station may receive at least a portion of the uplink data transmission.

Methods, systems, and devices for wireless communications are described. The method may involve a first user equipment (UE) receiving an indication of a set of sidelink resources and an indication of a set of uplink resources for transmitting sidelink feedback information. The first UE may receive a sidelink shared channel transmission from a second UE and upon receiving the sidelink shared transmission, generate feedback information regarding the sidelink shared channel transmission and transmit the feedback information directly to the base station using the set of uplink resources.

A method and an apparatus for feeding back channel state information (CSI) of user equipment (UE) in a communication system are disclosed. The method comprises the steps of: receiving, from a base station, configuration information related to a plurality of CSI reports; identifying the setting of the plurality of CSI reports corresponding to a plurality of measurement resources, on the basis of the configuration information; generating a first CSI report corresponding to a first measurement resource and a second CSI report corresponding to a second measurement resource when the plurality of CSI reports are set; and transmitting the first CSI report and the second CSI report to the base station.

Apparatuses, methods, and systems are disclosed for sidelink HARQ operation. One apparatus 400 includes a transceiver 425 that receives 605 a SL grant for data transmission using SL resources, the SL grant having a first HARQ process identifier. The apparatus 400 includes a processor 405 that selects 610 a second HARQ process identifier for the data transmission using SL resources. Via the transceiver 425, the processor 405 transmits 615 SCI containing the second HARQ process identifier and transmits 620 the SL data using the SL resources.

A wireless transmit/receive unit (WTRU) and a method comprising monitoring a plurality of cells for ACK/NACK information, each of the plurality of cells including a plurality of downlink channels, for each of the plurality of cells, determining a subset of the downlink channels for the cell, and, for each of the plurality of cells, monitoring the subset of downlink channels for one or more downlink messages.

Wireless communications systems and methods related to discontinuous reception (DRX) extended-on operations and dynamic transmission patterns in sidelink are provided. A first user equipment (UE) determines a transmission pattern for a first sidelink based on an extended DRX on-duration associated with a second sidelink different from the first sidelink, wherein the first sidelink is between the first UE and a second UE, and wherein the second sidelink is between the second UE and a third UE. The first UE transmits, to the second UE over the first sidelink during the extended DRX on-duration based on the transmission pattern, a communication signal.

Proposed is a method for performing, by a first apparatus, wireless communication. The method may receive, from a base station, information associated with a first sidelink (SL) resource, generate a medium access control protocol data unit (MAC PDU) including a sidelink packet in which hybrid automatic repeat request (HARQ) feedback is enabled on the basis of a logical channel priority (LCP), and reselect a second SL resource for transmitting the MAC PDU.

A data transmission method of a User Equipment, UE, in a Long Term Evolution, LTE, compliant mobile communications network, and a corresponding UE. The method comprises detecting reconfiguration of a bearer from a split bearer in which uplink Packet Data Convergence Protocol, PDCP, Protocol Data Units, PDUs, are transmitted to both a Master eNB, MeNB, and to a Secondary eNB, SeNB, to a non-split bearer in which uplink PDCP PDUs are transmitted only to the MeNB. If reconfiguration of a bearer from a split bearer to a non-split bearer in which uplink PDCP PDUs are transmitted to the MeNB is detected, the method further comprises initiating retransmission of PDCP PDUs from the first PDCP PDU for which transmission was attempted via the SeNB and for which there has been no confirmation of successful delivery by a protocol layer below the PDCP layer within the UE. The method further comprises retransmitting only PDCP PDUs for which transmission of the PDU was attempted via the SeNB.

One innovative aspect of the subject matter described in this disclosure may be implemented in a method for wireless communication. The method may be performed, for example, by a first multi-link device (MLD), that includes a first station (STA) and a second STA, to generate and provide block acknowledgment (BA) status reports for Medium Access Control (MAC) Protocol Data Units (MPDUs) transmitted by the first STA of the first MLD and the second STA of the first MLD. Another innovative aspect of the subject matter described in this disclosure may be implemented in a method for wireless communication. The method may be performed, for example, by a logical entity of a first MLD to receive and process a BA status report.