Abstract: A base station (BS) for handling SI change comprises at least one storage device for storing instructions and at least one processing circuit coupled to the at least one storage device. The at least one processing circuit is configured to execute the instructions stored in the at least one storage device. The instructions comprise broadcasting a plurality of synchronization signal (SS) blocks (SSBs) and a SI block (SIB) in a first bandwidth part (BWP) of a first carrier; communicating with a first communication device in a second BWP of the first carrier; updating a content of the SIB to an updated content, and broadcasting the SIB comprising the updated content in the first BWP; transmitting a SI change notification in the second BWP to the first communication device; and broadcasting the SIB comprising the updated content in the second BWP.

Abstract: A user device supports a first radio access technology (RAT) and a second RAT (902). The user device supports packet-based voice calls over the first RAT and is configured to operate in a voice-centric mode via a usage setting. An access mode in which the user device is capable of operating using the second RAT is enabled (904), and a cell in which a base station operates according to the second RAT is selected even though the user device does not support packet-based voice calls over the second RAT (906 (908).

Abstract: A first communication device for transmitting data to a second communication device comprises a storage device for storing instructions and a processing circuit coupled to the storage device. The processing circuit is configured to execute the instructions stored in the storage device. The instructions comprise compressing a first packet to a first compressed packet according to a compressor instance, wherein the first packet is associated to a flow identity (ID); generating a first Protocol Data Unit (PDU) comprising the flow ID and the first compressed packet; associating a first sequence number (SN) to the first PDU; encrypting the first PDU to a first encrypted packet; generating a first Packet Data Convergence Protocol (PDCP) PDU comprising the first SN and the first encrypted packet; and transmitting the first PDCP PDU via a first logical channel (LC) to the second communication device.

Abstract: The present disclosure describes techniques and apparatuses for non-orthogonal multiple access (NOMA) configuration procedures in split base station architectures, including the configuration of user equipment (UE) for NOMA transmission. The base station receives a trigger relating to a UE. Responsive to the trigger, the base station configures the UE to perform NOMA transmission by at least one of a Central Unit of the base station transmitting a first message including the NOMA configuration to a Distributed Unit of the base station and transmitting a second message including the NOMA configuration to the UE, the Central Unit transmitting the second message including the NOMA configuration to the UE, or the Distributed Unit transmitting a third message including the NOMA configuration to the Central Unit and the Central Unit transmitting the second message including the NOMA configuration to the UE.

Abstract: A communication device of handling a wireless local area network (WLAN) measurement configuration comprises instructions of establishing a connection to a base station (BS) of a cellular network; receiving the WLAN measurement configuration on the connection from the BS; performing WLAN measurement on a WLAN according to the WLAN measurement configuration; transmitting a first WLAN measurement result of the WLAN measurement on the connection to the BS according to the WLAN measurement configuration; receiving a cellular-WLAN aggregation (CWA) configuration on the connection from the BS; communicating a plurality of packets with the WLAN according to the CWA configuration; keeping the WLAN measurement configuration, when detecting a connection failure on the WLAN; and releasing the WLAN measurement configuration, when detecting a connection failure on the cellular network.

Abstract: A network comprising a first BS and a second BS for handling a handover comprises at least one storage device storing instructions of: the first BS transmitting a first RRC message configuring a DRB on a SRB to a communication device and receiving a first RRC response message on the SRB; the first BS receiving a first plurality of PDCP SDUs; the first BS performing a handover preparation procedure with the second BS and transmitting a second RRC message on the SRB to the communication device; the second BS receiving a second RRC response message on the SRB; the first BS transmitting at least one of a RX_NEXT, a RX_DELIV and a RX_REORD; the second BS receiving a second plurality of PDCP SDUs and processing the second plurality of PDCP SDUs according to the at least one of the RX_NEXT, the RX_DELIV and the RX_REORD.

Abstract: A communication device for transmitting capabilities for mobility to a network supporting a standalone mode of a first radio access technology (RAT), comprises at least one storage device; and at least one processing circuit, coupled to the at least one storage device. The at least one storage device stores, and the at least one processing circuit is configured to execute instructions of: the communication device transmitting a first capability of the first RAT and a second capability of the first RAT to a first base station (BS) of a second RAT via the second RAT, wherein the first capability indicates a support of a standalone mode of the first RAT and the second capability indicates a plurality of supported bands of the first RAT.

Abstract: A communication device for handling communications in a dual connectivity comprises a storage device for storing instructions and a processing circuit coupled to the storage device. The storage device stores, and the processing circuit is configured to execute instructions of establishing a first signaling radio bearer (SRB) with a master base station (MBS); establishing a second SRB with a secondary BS (SBS); receiving a first radio resource control (RRC) message comprising a first configuration, on the first SRB from the MBS; receiving a second RRC message comprising a second configuration, on the second SRB from the SBS; and applying the first configuration and ignoring the second configuration, when detecting a conflict between the first configuration and the second configuration.

Abstract: A first communication device for transmitting data to a second communication device comprises a storage device for storing instructions and a processing circuit coupled to the storage device. The processing circuit is configured to execute the instructions stored in the storage device. The instructions comprise compressing a first packet to a first compressed packet according to a compressor instance, wherein the first packet is associated to a flow identity (ID); generating a first Protocol Data Unit (PDU) comprising the flow ID and the first compressed packet; associating a first sequence number (SN) to the first PDU; encrypting the first PDU to a first encrypted packet; generating a first Packet Data Convergence Protocol (PDCP) PDU comprising the first SN and the first encrypted packet; and transmitting the first PDCP PDU via a first logical channel (LC) to the second communication device.

Abstract: A communication device for handling a pre-allocated uplink (UL) grant comprises a storage device and a processing circuit, coupled to the storage device. The storage device stores, and the processing circuit is configured to execute instructions of: using a first temporary identity to perform a data communication with a first base station (BS) via a first cell; receiving a handover command from the first BS, wherein the handover command configures the pre-allocated UL grant and configures the communication device to perform a handover to a second cell; and releasing the pre-allocated UL grant in response to a failure, when detecting the failure before completing the handover to the second cell.

Abstract: A communication device for handling a handover is configured to execute the instructions of: communicating with a base station (BS) via a first cell; receiving a radio resource control (RRC) message configuring the communication device to connect to a second cell, from the first cell; connecting to the second cell according to the RRC message, and transmitting a RRC response message for responding to the RRC message to the second cell; and exchanging a plurality of Evolved Packet System (EPS) Non Access Stratum (NAS) messages with an Evolved Packet Core (EPC) network according to an EPS NAS protocol via the second cell, when the RRC message does not include a Protocol Data Unit (PDU) Session Identity (ID), includes an EPS bearer ID or includes a handover type of a “5GStoEPS”.

Abstract: A communication device for handling a redirection comprises at least one storage device storing instructions of receiving a redirection message from a first base station (BS) of the first radio access technology (RAT) via a first cell, wherein the redirection message comprises RAT information indicating a second RAT and indicates a first core network (CN); entering an idle state in response to the redirection message; selecting a second cell of the second RAT according to the RAT information; establishing a radio resource control (RRC) connection via the second cell to a second BS in the idle state; generating a non-access-stratum (NAS) message for the first CN according to the redirection message; and transmitting the NAS message on the RRC connection via the second cell to the second BS.

Abstract: A base station (BS) for handling Physical Random Access Channel (PRACH) resources on a SCell in carrier aggregation comprises at least one storage device storing instructions of transmitting a radio resource control (RRC) message configuring the SCell to a communication device, wherein the RRC message comprises a DL beam management (BM) reference signal (RS) configuration and an association between a plurality of PRACH resources and a plurality of DL Tx beams; transmitting a plurality of DL BM RSs by using the plurality of DL Tx beams on the SCell, respectively; receiving a measurement report of the plurality of DL BM RSs; determining a DL Tx beam according to the measurement report; transmitting a Physical DL Control Channel (PDCCH) order by using the DL Tx beam, wherein the PDCCH order comprises a PRACH mask index indicating at least one PRACH resource; and determining a PRACH resource according to the measurement report.

Abstract: A network comprising a first base station (BS) and a second BS is configured to execute instructions of the first BS connecting to a communication device via a primary cell (PCell) of the first BS with a first SRB; the second BS as a secondary node (SN) connecting to the communication device via a primary secondary cell (PSCell) with a second signalling radio bearer (SRB) while the first BS as a master node (MN) connects to the communication device; and the second BS transmitting a radio resource control (RRC) message to the communication device, wherein the RRC message configures a secondary cell (SCell) to the communication device for a carrier aggregation (CA) and comprises a random access (RA) channel (RACH) configuration, the RACH configuration configures at least one RACH resource and the RRC message configures an association configuration.

Abstract: A communication device for handling a transmission comprises a storage unit for storing instructions and a processing circuit coupled to the storage unit. The processing circuit is configured to execute the instructions stored in the storage unit. The instructions comprise performing a first channel access procedure according to a first channel access priority class for a first transmission on a channel of an unlicensed band with a network, wherein the first transmission comprises at least one of a random access (RA) preamble, a hybrid automatic repeat request (HARQ) feedback, a scheduling request (SR), a channel quality indicator (CQI) and a sounding reference signal (SRS).

Abstract: The present invention provides a method and a communication device for handling channel access procedures. The communication device knows how to perform channel access procedures after receiving radio resource control (RRC) messages with or without a maximum energy detection threshold.

Abstract: A base station for handling communication operations with a communication device comprising a storage unit for storing instructions and a processing means coupled to the storage unit. The processing means is configured to execute the instructions stored in the storage unit. The instructions comprise transmitting at least one configuration of a first type for configuring 32 measurement objects (MeasObjects) to the communication device; transmitting at least one configuration of a second type for configuring at least one MeasObject in addition to the 32 MeasObjects to the communication device, wherein the second type is different from the first type; receiving a measurement result corresponding to one of the 32 MeasObjects from the communication device; and receiving a measurement result corresponding to one of the at least one MeasObject from the communication device.

Abstract: A communication device for handling communication operations with a network comprising a storage unit and a processing means. The processing means is configured to execute instructions stored in the storage unit. The instructions comprise starting a first time alignment timer (TAT) for a pTAG comprising a PCell; starting a second TAT for a first sTAG comprising a PUCCH SCell; releasing PUCCH and SRS for all serving cell(s) of the first sTAG, when the second TAT expires and the first TAT does not expire; being configured a first SCell of the network which belongs to the pTAG or a second sTAG; being configured the first SCell which belongs to a secondary PUCCH group comprising the PUCCH SCell; and releasing PUCCH for the first SCell, when the second TAT expires and the first TAT does not expires.

Abstract: A first base station is configured to execute instructions of the first BS transmitting a first interface message to a second BS for a secondary node change from a third BS to the second BS, wherein the first interface message does not comprise the first SCG configuration; the first BS receiving a second interface message responding to the first interface message, from the second BS, wherein the second interface message comprises a second SCG configuration; and the first BS transmitting a radio resource control message to a communication device, wherein the RRC message comprises the second SCG configuration and an indication indicating release of SCG.

Abstract: A communication device comprises a storage unit for storing instructions and a processing means coupled to the storage unit. The processing means is configured to execute the instructions stored in the storage unit. The instructions comprise receiving a master information block (MIB) indicating that an access for enhanced coverage is supported from a cell; and starting acquiring at least one system information block (SIB) for enhanced coverage.