Abstract: A method and device are disclosed from the perspective of a first UE. The first UE initiates a first procedure of establishing the one-to-one connection with the second UE for a unicast communication between the first UE and the second UE or for a UE-to-UE communication between the first UE and a third UE via the second UE or a second procedure of establishing the one-to-one connection with the second UE for a UE-to-Network communication between the first UE and a network node via the second UE. The first UE transmits a first PC5-S message to the second UE for completing establishment of a first security context in the first procedure of establishing the one-to-one connection with the second UE for the unicast communication or the UE-to-UE communication if the first procedure is initiated, wherein the first PC5-S message includes QoS information for the unicast communication or the UE-to-UE communication.

Abstract: A method and apparatus for implementing reference signal transmissions in a wireless communication system. In one embodiment, the method includes the cell, transmission point (TP), or transmission and reception point (TRP) broadcasting a first RS periodically for measurement, wherein the first RS is transmitted at multiple occasions (or timings) in each period on different beams. The method also includes the cell, TP, or TRP transmitting a second RS to a UE for PDCCH demodulation, wherein the second RS is transmitted on multiple beams in a beam set of the UE in a subframe (or symbol) in which the PDCCH is transmitted.

Abstract: A method and apparatus are disclosed from the perspective of a User Equipment (UE). In one embodiment, the method includes the UE is configured with a first serving cell, and is indicated to activate the first serving cell and an active UL BWP, wherein the first serving cell or the active UL BWP is not configured with Physical Uplink Control Channel (PUCCH) resource(s). The method further includes the UE does not expect to be indicated to transmit a first Physical Uplink Shared Channel (PUSCH) in the first serving cell or the active UL BWP in Radio Resource Control (RRC) connected mode, wherein the first PUSCH is scheduled by a Downlink Control Information (DCI) format without spatial relation field.

Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE triggers a first beam failure recovery (BFR) associated with a first cell. In response to the first triggered BFR, the UE triggers a Scheduling Request (SR) for Secondary Cell (SCell) beam failure recovery. In response to deactivation of the first cell, the UE cancels the first triggered BFR and the triggered SR for SCell beam failure recovery associated with the first cell.

Abstract: A User Equipment (UE) receives a message including a first parameter indicative of a list of entries associated with time resource allocation for multiple PUSCHs. The list does not include a third parameter for configuring a number of repetitions. The UE does not expect the message to include a second parameter that configures and/or indicates an aggregation factor. The UE receives a Downlink Control Information (DCI) indicative of a first entry in the list. The UE performs one or more transmissions on one or more time occasions. A number of time occasions of the one or more time occasions is based on a number of time resource allocations of the first entry.

Abstract: In an example, a User Equipment (UE) monitors a first Physical Downlink Control Channel (PDCCH), via a first spatial Quasi-Colocation (QCL) assumption associated with a first Transmission Configuration Indicator (TCI) state, on a first monitoring occasion of a first Control Resource Set (CORESET). The UE monitors a second PDCCH, via a second spatial QCL assumption associated with a second TCI state, on a second monitoring occasion of a second CORESET. The UE determines an interval between a reference monitoring occasion and a scheduled Physical Downlink Shared Channel (PDSCH), wherein the reference monitoring occasion is a last monitoring occasion of the first monitoring occasion and the second monitoring occasion.

Abstract: Methods and apparatuses for transmission or reception using beamforming in a wireless communication system are disclosed herein. In one method, a user equipment provides information related to a combination of UE beams to a network node, wherein UE beams in the combination can be generated by the UE at the same time. The UE receives, from the network node, a scheduling information for a transmission or a reception. The UE generates one or more UE beams in the combination to perform the transmission or the reception.

Abstract: A method and apparatus are disclosed. In an example, a first user equipment (UE) may be configured with a first number of carriers corresponding to a maximum number of carriers that the first UE is able to use concurrently and/or transmit on concurrently. The first UE may receive a plurality of sidelink transmissions on a plurality of carriers. The first UE may derive a plurality of slots for transmitting Physical Sidelink Feedback Channels (PSFCHs) based upon resources associated with the plurality of sidelink transmissions. Responsive to determining that a number of carriers of a second plurality of carriers associated with derived transmissions of the PSFCHs exceeds the first number of carriers, the first UE may prioritize one or more PSFCHs of the PSFCHs based upon a rule. The plurality of slots for transmitting the PSFCHs may be at least partially overlapped in the time domain.

Abstract: A method and apparatus are disclosed from the perspective of a first network node. In one embodiment, the method includes the first network node transmitting a second transmission to a UE (User Equipment) in at least a first symbol of a first TTI (Transmission Time Interval). The method further includes the first network node transmitting a first transmission to a second network node in at least a second symbol of a second TTI, wherein the first TTI is TTI-level aligned to the second TTI and the first symbol is at least partially overlapped with the second symbol in time domain.

Abstract: A method and apparatus are disclosed from the perspective of a User Equipment (UE). In one embodiment, the method includes the UE being served and/or configured with a first cell and a second cell. The method also includes the UE transmitting a beam failure recovery request via a PRACH (Physical Random Access Channel) in the second cell in response to the UE detecting that all links associated with monitored control resource set(s) in the second cell have failed. Furthermore, the method includes the UE transmitting a first report via a PUCCH (Physical Uplink Control Channel) in the second cell in response to the UE detecting that all links associated with monitored control resource set(s) in the first cell have failed.

Abstract: A method and apparatus are disclosed from the perspective of a UE. In one embodiment, the method includes triggering a first SR by a first LCH, wherein the first LCH is associated with a first SR configuration. The method also includes triggering a second SR by a second LCH while the first SR is pending, wherein the second LCH is associated with a second SR configuration, and the first SR configuration and the second SR configuration are configured for the same serving cell. The method further includes using a first SR opportunity and a second SR opportunity to transmit SRs to a network node until the SRs are cancelled, wherein the first SR opportunity corresponds to the first SR configuration and the second SR opportunity corresponds to the second SR configuration.

Abstract: A method and apparatus are disclosed from the perspective of a User Equipment. In one embodiment, the method includes the UE detecting and/or receiving downlink transmission in a first channel occupancy time in unlicensed spectrum. The method also includes the UE detecting and/or receiving downlink transmission in a second channel occupancy time in unlicensed spectrum, wherein the second channel occupancy time is a next channel occupancy time detected by the UE after the first channel occupancy time. The method further includes that after the first channel occupancy time ends, the UE performs receiving beam sweeping in each time unit until the UE receives downlink transmission in the second channel occupancy time or until the UE finds a candidate beam in the second channel occupancy time.

Abstract: A method and apparatus are disclosed. In an example, a first device receives first information and second information from a base station. The first device is configured with a configured grant for sidelink communication via the first information. The configured grant is indicative of first resources for sidelink communication. The second information is indicative of one or more timing offsets and an identity for second resources. The first device transmits sidelink data to a second device via a first resource of the first resources. The first device receives and/or detects a first signal, from the second device, indicative of a reception result associated with the sidelink data. The first device determines a second time and a frequency location based on the second information. The first device transmits a second signal to the base station via a second resource associated with the second time and the frequency location.

Abstract: A method and apparatus are disclosed from the perspective of an initiating UE (User Equipment) for establishing a one-to-one sidelink communication with a target UE. In one embodiment, the method includes transmitting a first PC5 signalling used for establishing the one-to-one sidelink communication, wherein the first PC5 signalling includes an identity of the target UE and an identity of a V2X (Vehicle-to-Everything) service.

Abstract: Methods and apparatuses for determining numerology bandwidth in a wireless communication system are disclosed herein. In one method, a user equipment receives information for a numerology. The information comprises a frequency location and a bandwidth. The UE derives a resource allocation for the numerology based on the frequency location and the bandwidth.

Abstract: A method and apparatus are disclosed from the perspective of an User Equipment (UE). In one embodiment, the method includes the UE performing sensing on a second direction or beam. The method also includes the UE performing a sidelink transmission on a resource on a first direction or beam, wherein the resource is selected based on at least sensing result of the second direction or beam.

Abstract: A method and apparatus are disclosed from the perspective of a User Equipment (UE) for the UE to request sidelink resources for an one-to-one V2X (Vehicle-to-Everything) sidelink communication, wherein the UE supports both LTE (Long Term Evolution) RAT (Radio Access Technology) and NR (New Radio) RAT. In one embodiment, the method includes the UE initiating a one-to-one V2X sidelink communication. The method further includes the UE transmitting a RRC (Radio Resource Control) message to a network node to request sidelink resources from NR RAT for the one-to-one V2X sidelink communication and not transmitting any RRC message to the network node to request sidelink resources from LTE RAT for the one-to-one V2X sidelink communication.

Abstract: Methods and apparatuses of handling a bandwidth part (BWP) inactivity timer during a Random Access procedure in a wireless communication system are disclosed herein. In one method, a user equipment (UE) starts a BWP timer for a serving cell operating in a paired spectrum. The UE initiates a contention-based Random Access (RA) procedure on the serving cell and stops the BWP timer. The UE starts the BWP timer upon successful completion of the RA procedure, wherein the UE considers the contention-based RA procedure successfully completed if a Physical Downlink Control Channel (PDCCH) addressed to a Cell Network Temporary Identifier (C-RNTI) of the UE is received and the PDCCH contains an uplink grant for a new transmission.

Abstract: A method and apparatus are disclosed from the perspective of a first device to determine sidelink feedback resource associated with sidelink communication. In one embodiment, the method includes the first device receiving an identifier from an upper layer of the first device. The method also includes the first device receiving a sidelink transmission from a second device. The method further includes the first device determining a sidelink feedback resource associated with the sidelink transmission at least based on the identifier and a source ID (Identity) associated with the sidelink transmission. In addition, the method includes the first device using the sidelink feedback resource to transmit a feedback in response to the sidelink transmission to the second device.

Abstract: Methods and apparatuses for selecting beam for preconfigured uplink resources in a wireless communication system are disclosed herein. In one method, a user equipment (UE) receives, from a network node, a signaling to configure at least one Preconfigured Uplink Resource (PUR) associated with one or more beams from multiple beams. The UE selects a first beam from the multiple beams and performs a transmission of data in RRC_INACTIVE state using the at least one PUR via the first beam if the first beam fulfills at least one condition, wherein the at least one condition comprises that the first beam is associated with the at least one PUR and Reference Symbol Received Power (RSRP) of the first beam is better than a first threshold. The UE initiates a Random Access (RA) procedure and performs the transmission during the RA procedure if no beam of the multiple beams fulfills the at least one condition.