Abstract: Methods, systems, and apparatuses are provided for handling User Equipment (UE)-initiated beam reporting in a wireless communication system, wherein a method of a UE comprises triggering a UE-initiated beam reporting associated with multiple candidate cells, and determining, when an Uplink (UL) grant cannot accommodate all of one or more information associated with the multiple candidate cells for the UE-initiated beam reporting, whether to prioritize an information of a candidate cell of the multiple candidate cells to be transmitted via the UL grant based on at least a quality associated with the candidate cell.

Abstract: A method and apparatus are disclosed from the perspective of a first device to perform sidelink communication. In one embodiment, the first device has a periodic sidelink resource reservation, wherein the periodic sidelink resource reservation comprises, reserves, or provides one set of sidelink resources in one period. The first device also has one or more sidelink logical channels with available sidelink data, wherein the one or more sidelink logical channels are associated with one or more destinations. Furthermore, the first device selects or determines a first destination, among the one or more destinations, satisfying at least a condition that an initial sidelink resource of the one set of sidelink resources is within sidelink active time associated with the first destination. In addition, the first device generates a first data packet for the first destination.

Abstract: A method and apparatus are disclosed from the perspective of a first device to perform sidelink communication. In one embodiment, the method includes the first device performing sidelink resource selection or reselection procedure for a sidelink transmission to a second device, wherein the sidelink resource selection or reselection procedure is performed to select at least one sidelink resource from candidate sidelink resources within a time duration of selection window. The method further includes the first device selecting a first sidelink resource based on sidelink active time or wake-up time of the second device, wherein the first sidelink resource is within the time duration of selection window. The method also includes the first device performing the sidelink transmission on the first sidelink resource to the second device.

Abstract: In an example from the perspective of a first User Equipment (UE), in response to performing successful listen before talk (LBT), the first UE determines a channel occupancy time (COT). The first UE determines whether or not a second sidelink transmission, to be performed by a second UE, is within the COT. The first UE determines information, associated with LBT type and/or cyclic prefix (CP) extension, for inclusion in a first sidelink transmission in the COT, wherein whether the information includes first information associated with LBT type and/or CP extension or the information includes second information associated with LBT type and/or CP extension is based on the determination of whether or not the second sidelink transmission is within the COT. The UE transmits, to the second UE, the first sidelink transmission in the COT. The first sidelink transmission includes the information. The second sidelink transmission is associated with the first sidelink transmission.

Abstract: Methods, systems, and apparatuses are provided for uplink transmission to transmission and reception point with reduced functionality in a wireless communication system, wherein a method comprises receiving a Physical Downlink Control Channel (PDCCH) order from a first Transmission/Reception Point (TRP) of a serving cell, wherein a field in the PDCCH order indicates an association between a Physical Random Access Channel (PRACH) transmission and the first TRP with Downlink (DL) and Uplink (UL) functionality or an association between the PRACH transmission and a second TRP, of the serving cell, without DL functionality or with reduced DL functionality, and performing the PRACH transmission in response to the PDCCH order, wherein a transmit power of the PRACH transmission is determined based on the field.

Abstract: Methods and apparatuses are provided for power headroom report regarding multiple TRPs in a wireless communication system. The systems and methods of the present invention address, expand, and improve how networks perform power control on multiple TRPs, how networks manage power control for uplink transmissions for different links, and how a UE derives one or more PH/PHR for different links.

Abstract: Methods, systems, and apparatuses are provided for handling random access reporting in a wireless communication system, wherein a method of a User Equipment (UE) comprises receiving a first Physical Downlink Control Channel (PDCCH) order, initiating, in response to receiving the first PDCCH order, a first Random Access (RA) procedure to a candidate cell for early Timing Advance (TA) acquisition, storing a first RA information associated with the first RA procedure, and reporting the first RA information to a network in response to a request from the network.

Abstract: Methods, systems, and apparatuses are provided for handling User Equipment (UE)-initiated beam change in a wireless communication system, with a method of a UE comprising triggering or initiating a UE-initiated beam switching associated with a Cell, transmitting a beam switching indication associated with the Cell in response to the UE-initiated beam switching, and performing, in response to considering the UE-initiated beam switching to be not successful, or expiration of a timer, at least one of: canceling the triggered UE-initiated beam switching associated with the Cell, and/or canceling a Scheduling Request (SR) associated with the UE-initiated beam switching, and/or stopping a Random Access (RA) procedure associated with the UE-initiated beam switching, and/or triggering a Beam Failure Recovery (BFR) associated with the Cell, and/or retransmitting the beam switching indication, and/or generating and transmitting a second beam switching indication.

Abstract: Methods, systems, and apparatuses are provided for handling sidelink reference signals for beam management in a wireless communication system, with a method of a first device comprising being scheduled or requested to perform one or more standalone Sidelink (SL) Channel State Information Reference Signal (CSI-RS) transmissions, receptions, or measurements in a first sidelink Transmission Time Interval (TTI) in a first sidelink resource pool in a sidelink carrier or cell, being scheduled or requested to perform a first sidelink data and/or feedback transmission or reception in the first sidelink TTI in the sidelink carrier or cell, and determining to perform either the one or more standalone SL CSI-RS transmissions, receptions, or measurements, or the first sidelink data and/or feedback transmission or reception in the first sidelink TTI, at least based on a parameter of a standalone SL CSI-RS.

Abstract: Methods, systems, and apparatuses are provided for sidelink transmission with beamforming in a wireless communication system, with a method of a first User Equipment (UE) comprising performing one or more unicast sidelink transmissions with one or more destinations comprising a second destination associated with a second UE, and transmitting information indicating a set of Transmission Time Intervals (TTIs) to a network node, wherein the set of TTIs corresponds to the second UE monitoring or receiving Sidelink Control Information (SCI) in the sidelink resource pool via a second beam associated with the first UE.

Abstract: Methods, systems, and apparatuses are provided for enhancing timing alignment for uplink (UL) multi-Transmission/Reception Point (TRP) (or mTRP) scenarios in a wireless communication system. A method for a UE in a wireless communication system can comprise receiving a signaling, wherein the signaling indicates activation for a first TRP and/or is a Physical Downlink Control Channel (PDCCH) signal, determining to perform a first random access procedure on the first TRP, based on the signaling, to obtain a first Time Alignment (TA) information associated with the first TRP, and performing multi-TRP operation on the first TRP associated with the first TA information and a second TRP associated with a second TA information.

Abstract: Methods and apparatuses are provided for power headroom report regarding multiple TRPs in a wireless communication system. The systems and methods of the present invention address, expand, and improve how networks perform power control on multiple TRPs, how networks manage power control for uplink transmissions for different links, and how a UE derives one or more PH/PHR for different links.

Abstract: Methods, systems, and apparatuses are provided for handling timing advance for cells in a wireless communication system, comprising a User Equipment (UE) receiving a configuration indicating at least one candidate cell including a first candidate cell, storing a first Timing Advance (TA) associated with the first candidate cell, and clearing or discarding the first TA associated with the first candidate cell in response to at least one of: expiry of a timer associated with the first TA; performing Radio Resource Control (RRC) re-establishment; the UE entering RRC_IDLE state or RRC_INACTIVE state; a serving cell change; and/or the UE storing a second TA when a list or a set of stored TAs for the at least one candidate cell is full.

Abstract: Methods, systems, and apparatuses are provided for enhancing timing alignment for uplink (UL) multi-Transmission/Reception Point (TRP) (or mTRP) scenarios in a wireless communication system. A method for a UE in a wireless communication system can comprise receiving a signaling, wherein the signaling indicates activation for a first TRP and/or is a Physical Downlink Control Channel (PDCCH) signal, determining to perform a first random access procedure on the first TRP, based on the signaling, to obtain a first Time Alignment (TA) information associated with the first TRP, and performing multi-TRP operation on the first TRP associated with the first TA information and a second TRP associated with a second TA information.

Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE receives an uplink (UL) grant. The UL grant is indicative of a first Physical Uplink Shared Channel (PUSCH) transmission on a first Transmission/Reception Point (TRP) of a first cell. The UL grant is not indicative of a PUSCH transmission on a second TRP of the first cell. The UE transmits a Power Headroom Reporting (PHR) Medium Access Control (MAC) Control Element (CE). Based on the UL grant, the PHR MAC CE is indicative of a first power headroom (PH), associated with the first TRP, based on a real PUSCH transmission, and is indicative of a second PH, associated with the second TRP, based on a reference PUSCH transmission.

Abstract: A method a User Equipment (UE) can comprise receiving a configuration of a first Discontinuous Reception (DRX) timer with a value in number of symbols, receiving a configuration of a second DRX timer with a value in number of slot lengths, transmitting, via a Sidelink (SL) Hybrid Automatic Repeat Request (HARQ) process, a first SL transmission associated with SL configured grant Type 1, starting the first DRX timer for the SL HARQ process in response to the first SL transmission, wherein the UE determines a first symbol length associated with the first DRX timer based on a symbol length of an active Downlink (DL) Bandwidth Part (BWP) of a Primary Cell (PCell), starting the second DRX timer for the SL HARQ process in response to expiration of the first DRX timer which was started in response to the first SL transmission, wherein the UE determines a first slot length associated with the second DRX timer based on a slot length of the active DL BWP of the PCell, and monitoring Physical Downlink Control Channel (P

Abstract: Methods and apparatuses are provided for power headroom report regarding multiple TRPs in a wireless communication system. The systems and methods of the present invention address, expand, and improve how networks perform power control on multiple TRPs, how networks manage power control for uplink transmissions for different links, and how a UE derives one or more PH/PHR for different links.

Abstract: A method and apparatus are disclosed. In an example from the perspective of a first device, the first device performs sidelink communication with a first set of destinations, wherein one or more devices, associated with a destination of the first set of destinations, discontinuously monitor one or more sidelink control channels and/or one or more sidelink control informations (SCIs). The first device receives a sidelink grant from a network, wherein the sidelink grant is for performing a sidelink transmission at a first timing. The first device selects, from among a second set of destinations, a first destination for the sidelink transmission, wherein each destination of the second set of destinations is determined to have an active time for sidelink containing the first timing.

Abstract: A method a User Equipment (UE) can comprise receiving a configuration of a first Discontinuous Reception (DRX) timer with a value in number of symbols, receiving a configuration of a second DRX timer with a value in number of slot lengths, transmitting, via a Sidelink (SL) Hybrid Automatic Repeat Request (HARQ) process, a first SL transmission associated with SL configured grant Type 1, starting the first DRX timer for the SL HARQ process in response to the first SL transmission, wherein the UE determines a first symbol length associated with the first DRX timer based on a symbol length of an active Downlink (DL) Bandwidth Part (BWP) of a Primary Cell (PCell), starting the second DRX timer for the SL HARQ process in response to expiration of the first DRX timer which was started in response to the first SL transmission, wherein the UE determines a first slot length associated with the second DRX timer based on a slot length of the active DL BWP of the PCell, and monitoring Physical Downlink Control Channel (P

Abstract: Methods, systems, and apparatuses are provided for a first device receiving configuration of one or more sidelink resource pools enabled or supported for sidelink reference signal transmission, triggering one or more sidelink reference signal resource requests for performing one or more sidelink reference signal transmissions, generating a first message for sidelink reference signal, wherein the first message for sidelink reference signal comprises information of the one or more sidelink reference signal resource requests, and wherein information of a sidelink reference signal resource request comprises any of a priority of sidelink reference signal, a destination index or Identity (ID) of sidelink reference signal, and a bandwidth (requirement) of sidelink reference signal, and transmitting the first message for sidelink reference signal to a network node.