Abstract: A method and apparatus are disclosed from the perspective of a UE (User Equipment). In one embodiment, the method includes transmitting a Scheduling Request (SR) on a first uplink bandwidth part (BWP). The method further includes receiving a response for the SR on a first downlink BWP. The method also includes detecting a beam failure when using the first uplink BWP and the first downlink BWP. In addition, the method includes transmitting a beam failure recovery (BFR) request to a network node on the first uplink BWP. Furthermore, the method includes receiving a control signalling on a second downlink BWP from the network node after transmitting the BFR request, wherein the control signalling is a response for the BFR request and the second downlink BWP is associated with the first uplink BWP.

Abstract: A method and apparatus are disclosed from the perspective of a User Equipment (UE), wherein the UE is configured with multiple Bandwidth Parts (BWPs). In one embodiment, the method includes the UE receiving information from a network node to associate a RACH (Random Access Channel) configuration with a BWP among the multiple BWPs. The method further includes that the UE performing a RACH transmission in the BWP using the RACH configuration associated with the BWP.

Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE keeps a dedicated Preconfigured Uplink Resources (PUR) configuration when the UE is in Radio Resource Control (RRC) idle state and a serving cell of the UE is a second cell, wherein the UE is configured with the dedicated PUR configuration in a first cell different than the second cell. The UE selects a third cell during a RRC connection re-establishment procedure. In response to the selecting the third cell, the UE determines whether or not to release the dedicated PUR configuration based upon whether or not the third cell is the same as the first cell, wherein the determining whether or not to release the dedicated PUR configuration is performed when the UE is in RRC connected state.

Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE triggers a Power Headroom Report (PHR) when the UE is in Radio Resource Control (RRC) inactive state. The UE determines whether or not to cancel the PHR based upon whether or not an uplink (UL) resource for transmission in the RRC inactive state can accommodate first pending data available for transmission.

Abstract: A method and apparatus are disclosed from the perspective of a UE (User Equipment). In one embodiment, the method includes transmitting a Scheduling Request (SR) on a first uplink bandwidth part (BWP). The method further includes receiving a response for the SR on a first downlink BWP. The method also includes detecting a beam failure when using the first uplink BWP and the first downlink BWP. In addition, the method includes transmitting a beam failure recovery (BFR) request to a network node on the first uplink BWP. Furthermore, the method includes receiving a control signalling on a second downlink BWP from the network node after transmitting the BFR request, wherein the control signalling is a response for the BFR request and the second downlink BWP is associated with the first uplink BWP.

Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE keeps a dedicated Preconfigured Uplink Resources (PUR) configuration when the UE is in Radio Resource Control (RRC) idle state and a serving cell of the UE is a second cell, wherein the UE is configured with the dedicated PUR configuration in a first cell different than the second cell. The UE selects a third cell during a RRC connection re-establishment procedure. In response to the selecting the third cell, the UE determines whether or not to release the dedicated PUR configuration based upon whether or not the third cell is the same as the first cell, wherein the determining whether or not to release the dedicated PUR configuration is performed when the UE is in RRC connected state.

Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE keeps a dedicated Preconfigured Uplink Resources (PUR) configuration when the UE is in Radio Resource Control (RRC) idle state and a serving cell of the UE is a second cell, wherein the UE is configured with the dedicated PUR configuration in a first cell different than the second cell. The UE selects a third cell during a RRC connection re-establishment procedure. In response to the selecting the third cell, the UE determines whether or not to release the dedicated PUR configuration based upon whether or not the third cell is the same as the first cell, wherein the determining whether or not to release the dedicated PUR configuration is performed when the UE is in RRC connected state.

Abstract: A method and apparatus are disclosed from the perspective of a User Equipment (UE), wherein the UE is configured with multiple Bandwidth Parts (BWPs). In one embodiment, the method includes the UE receiving information from a network node to associate a RACH (Random Access Channel) configuration with a BWP among the multiple BWPs. The method further includes that the UE performing a RACH transmission in the BWP using the RACH configuration associated with the BWP.

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: 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.

Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE initiates a first Early Data Transmission (EDT) in RRC_INACTIVE state. Responsive to initiating the first EDT, the UE initiates a Random Access (RA) procedure in a cell configured with a normal uplink (NUL) carrier and a supplementary uplink (SUL) carrier. The UE selects the SUL carrier or the NUL carrier for performing the RA procedure based on at least one of whether there are one or more available Physical Random Access Channel (PRACH) resources for EDT on the SUL carrier or whether there are one or more available PRACH resources for EDT on the NUL carrier.

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. In an example from the perspective of a User Equipment (UE), the UE receives, from a network node, a paging message indicative of Mobile-terminated Early Data Transmission (MT-EDT). Responsive to receiving the paging message, the UE determines a validity of a timing parameter associated with one or more Preconfigured Uplink Resources (PUR). The UE determines, based on the validity, whether to initiate a Random Access (RA) procedure for MT-EDT or to initiate a transmission using the one or more PURs.

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: 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: To perform successful transmission using Preconfigured Uplink Resources (PUR) in RRC_IDLE state, the UE (User Equipment) should maintain a valid timing adjustment (or timing alignment, TA). Currently the maximum of TA timer (excluding infinity value) is 10.24 seconds. In many or most cases, the TA timer will expire before the next PUR occasion occurs, resulting in the UE being unable to perform transmission using PUR. To solve such issue, the UE could apply different length for the TA timer in RRC_IDLE state. A method and apparatus are disclosed from the perspective of a User Equipment (UE). In one embodiment, the method includes the UE receiving a configuration of a first timer indicating a first length in a RRCConnectionRelease message, wherein the first timer is used to control validity of a first Timing Adjustment (TA) for a transmission using Preconfigured Uplink Resources (PUR) in RRC_IDLE state.

Abstract: A method and apparatus are disclosed from the perspective of a UE (User Equipment). In one embodiment, the method includes the UE initiating a Random Access (RA) procedure on a Serving Cell, wherein the UE has multiple active uplink bandwidth parts (UL BWP) for the Serving Cell. The method further includes the UE selecting a UL BWP from the multiple active UL BWPs for an Msg1 transmission, based on a first rule. The method also includes the UE transmitting the Msg1 on the selected UL BWP.

Abstract: A method and apparatus are disclosed from the perspective of a User Equipment (UE). In one embodiment, the method includes receiving, from a network node, a configuration of Preconfigured Uplink Resources (PUR), when the UE is in RRC_CONNECTED state, wherein the PUR is used for a transmission when the UE is in RRC_IDLE state. The method also includes determining to generate a first Radio Resource Control (RRC) message or a second RRC message for the transmission based on whether the transmission is to be transmitted using the PUR or not, wherein the first RRC message includes a UE identity and the second RRC message does not include the UE identity. The method further includes performing the transmission including the first RRC message or the second RRC message when the UE is in RRC_IDLE state.

Abstract: To perform successful transmission using Preconfigured Uplink Resources (PUR) in RRC IDLE state, the UE (User Equipment) should maintain a valid timing adjustment (or timing alignment, TA). Currently the maximum of TA timer (excluding infinity value) is 10.24 seconds. In many or most cases, the TA timer will expire before the next PUR occasion occurs, resulting in the UE being unable to perform transmission using PUR. To solve such issue, the UE could apply different length for the TA timer in RRC IDLE state. A method and apparatus are disclosed from the perspective of a User Equipment (UE). In one embodiment, the method includes the UE receiving a configuration of a first timer indicating a first length in a RRCConnectionRelease message, wherein the first timer is used to control validity of a first Timing Adjustment (TA) for a transmission using Preconfigured Uplink Resources (PUR) in RRC_IDLE state.

Abstract: Methods and apparatuses for releasing preconfigured uplink resources configuration in a wireless communication system are disclosed herein. In one method, a User Equipment (UE) receives a configuration of a preconfigured uplink resource (PUR) when the UE is in a first RRC_CONNECTED state. The UE enters a first RRC_IDLE state from the first RRC_CONNECTED state. The UE performs a first transmission using the PUR when the UE is in the first RRC_IDLE state. The UE enters a second RRC_CONNECTED state from the first RRC_IDLE state. The UE suspends the configuration when the UE is in the second RRC_CONNECTED state. The UE resumes the configuration when the UE enters a second RRC_IDLE state from the second RRC_CONNECTED state. The UE performs a second transmission using the PUR when the UE is in the second RRC_IDLE state.