Abstract: A method and apparatus for using a configured resource by a user equipment in a wireless communication system. In one embodiment, the method includes receiving a signaling to configure an uplink resource which is available in multiple transmission time intervals (TTIs), including a first TTI and a second TTI. The method includes performing a transmission using the uplink resource in the first TTI in response to reception of the signaling and not in the second TTI which is not corresponding to reception of the signaling, wherein the UE has no data available for transmission.

Abstract: A method and apparatus for delivery of control signaling in a wireless communication system are disclosed. In one embodiment, the method includes communicating with a UE (User Equipment) in the cell via downlink and uplink transmissions, wherein the downlink and uplink transmissions are organized into radio frames and each radio frame contains multiple subframes and each subframe contains multiple symbols. The method also includes transmitting, in the cell, a UE specific signal in a first symbol of a downlink control region of a subframe of the multiple subframes, wherein the network node is not allowed to transmit a common signal in the first symbol.

Abstract: Methods and apparatuses for random access procedures for a system information request in a wireless communication system are disclosed herein. In one method, a user equipment (UE) initiates a random access procedure to request a system information. The UE transmits a random access preamble during the random access procedure. The UE monitors a control channel for a random access response immediately after transmitting the random access preamble for a request of the system information.

Abstract: A method and apparatus are disclosed for reducing signaling overhead in a wireless communication network. In one embodiment, the method is implemented in a UE. The method includes receiving a first indication from a network node to tell the UE to remember, after the UE enters RRC_IDLE, a first configuration which is currently used while the UE is in RRC_CONNECTED. The method also includes keeping the first configuration upon leaving RRC_CONNECTED. The method further includes releasing the first configuration when the UE connects to a RAT different from where the first indication was received.

Abstract: Method and apparatus for a user equipment (UE) operating in a serving cell is disclosed. The UE, in a first RRC_CONNECTED state, transmits an interest indication for a broadcast or a multicast service to a first serving cell. The interest indication includes at least some information associated with a broadcast or a multicast service. Upon entering a second RRC_CONNECTED state from an RRC_INACTIVE state, the UE may or may not send an interest indication to a second serving cell, taking into account the differences between the first and second serving cell, whether the second serving cell requested transmission of an interest indication, or whether the content of the second interest indication would be the same as the content of the first interest indication. A network node may retain UE context and other UE-related information after the UE has left an RRC_CONNECTED state, forward the information to another network node, and/or process the information when the UE re-enters the RRC_CONNECTED state.

Abstract: Method and apparatus for a user equipment (UE) operating in a serving cell is disclosed. The serving cell does not broadcast system information for broadcast or multicast. The UE transmits an interest indication for broadcast or multicast to the serving cell. The interest indication for broadcast or multicast includes at least some information associated with a broadcast or multicast service of interest. The UE receives the system information for broadcast or multicast from the serving cell after transmitting the interest indication for broadcast or multicast.

Abstract: Method and apparatus for handling upon UL timing asynchronism in a wireless communication system are disclosed herein. The user equipment (UE) maintains a timing advance (TA) value for each of a plurality of beams used for uplink transmissions to a cell, or a transmitter/reception point (TRP) operatively connected to a gNodeB. If less than all of the maintained TA values become invalid, then the UE will continue transmission on any beam for which the TA value remains valid, while discontinuing transmission on any beam with an invalid TA value.

Abstract: A method and apparatus are disclosed from the perspective of a UE. In one embodiment, the method includes receiving a first signaling, wherein the first signaling includes an identity of a broadcast or multicast service. The method further includes receiving a second signaling, wherein the second signaling indicates an association between a numerology and an information of the broadcast or multicast service. The method also includes using the numerology to receive the broadcast or multicast service.

Abstract: Methods and apparatuses for improving device to device (D2D) communication are disclosed herein. One method includes a user equipment (UE) triggering a buffer status report (BSR) upon configuration or setup of radio resource allocation mode 1 for D2D communication while the UE has data available for transmission for D2D communication. The method further includes the UE transmitting a Medium Access Control (MAC) Control Element corresponding to the BSR.

Abstract: A method and apparatus are disclosed from the perspective of a UE. In one embodiment, the method includes receiving a configuration, wherein the configuration indicates whether the UE performs a beam management during a specific period of time. The method also includes determining whether to perform the beam management during the specific period of time based on at least the configuration.

Abstract: Methods and apparatuses for user equipment beamforming operation in a wireless communication system. In one method, a user equipment receives a first configuration or a first scheduling to request the UE to perform a first Uplink (UL) transmission on a first UE beam, wherein the first UL transmission is to be performed in a first time unit. The UE receives a second configuration or a second scheduling to request the UE to perform a second UL transmission on a second UE beam, wherein the second UL transmission is to be performed in a second time unit. The UE performs the first UL transmission on the first UE beam and drops the second UL transmission on the second UE beam if the second time unit is at least partially overlapped with the first time unit.

Abstract: Methods and apparatuses for triggering a power headroom report for beam operation in a wireless communication system are disclosed herein. In one method, a user equipment (UE) uses multiple beams for transmission. The UEtriggers a power headroom report due to a change of a pathloss being larger than a threshold, wherein the pathloss is associated with a specific beam or a set of beams.

Abstract: A method and apparatus for handling transmission in a wireless communication system. In one embodiment, the method includes initiating a RA procedure, by a UE, in a serving cell. The method also includes deciding whether to transmit a RA Preamble, by the UE, in the serving cell at a specific timing during the RA procedure based on at least one information that includes beam(s) (or beam group(s)) of the serving cell detected by the UE.

Abstract: A method and apparatus are disclosed from the perspective of a UE. In one embodiment, the method includes maintaining a first timing advance for a cell, wherein the first timing advance is associated with a first identifier. The method further includes performing a random access procedure in the cell. The method also includes receiving an initial value of a second timing advance for the cell via a random access response of the random access procedure. In addition, the method includes receiving a second identifier to associate with the second timing advance. Furthermore, the method includes maintaining the first timing advance and the second timing advance for the cell.

Abstract: A method and apparatus are disclosed from the perspective of a UE. In one embodiment, the method includes transmitting a power related information corresponding to a specific UE beam and/or a specific UE beam combination of multiple UE beams to a base station. In one embodiment, the method further includes receiving an indication from the base station about the power related information of which UE beam and/or UE beam combination is to be reported.

Abstract: A method and apparatus are disclosed, from the perspective of a UE, for transmitting UL RS. In one embodiment, the method includes deriving a first transmit power of a first UL RS based on a first power control mechanism, wherein derivation of the first transmit power based on the first power control mechanism is associated with an uplink data channel. In addition, the method includes deriving a second transmit power of a second UL RS based on a second power control mechanism, wherein derivation of the second transmit power based on the second power control mechanism is not associated with the uplink data channel. Furthermore, the method includes transmitting the first UL RS with the first transmit power. The method also includes transmitting the second UL RS with the second transmit power.

Abstract: A method and apparatus are disclosed, from the perspective of the UE (User Equipment). In one embodiment, the method includes maintaining a first timing advance value for uplink transmissions. In addition, the method includes receiving a signaling, via a downlink control channel, to schedule a first uplink transmission in a cell, wherein the signaling includes a first information to assist the UE to determine a specific timing advance value for the first uplink transmission, and the first information indicates an index value used to control an amount of timing adjustment to be applied. The method also includes performing the first uplink transmission in the cell at transmission timing determined at least based on the specific timing advance value.

Abstract: Methods and apparatuses are disclosed for handling uplink transmission in a wireless communication system. In one method, a user equipment (UE) connects to at least two base stations including a first base station controlling a first serving cell and a second base station controlling a second serving cell. The method further includes the UE receiving a downlink signaling in the second serving cell. The method also includes the UE transmitting a reference signal in the first serving cell in response to the reception of the downlink signaling.

Abstract: A method for a wireless communications system is disclosed. In one example, a network node transmits an indication to a UE to enable or disable UE beamforming. The indication also serves to initiate a random access procedure. The indication is transmitted together with other information. The other information can include configuration information related to random access. The indication and the other information can be provided via the same RRC message. The UE initiates a random access procedure in response to receiving the indication.

Abstract: Methods and apparatuses for transmission or reception using beamforming in a wireless communication system are disclosed herein. In one method, a user equipment receives a second signal indicating a first information. The UE derives at least one specific UE beam based on the first information. The UE uses the at least one specific UE beam to receive or transmit at least one transmission, in which the at least one transmission is periodic channel state indication, scheduling request, and/or scheduling information for downlink assignment or uplink resource.