Abstract: Provided by the present disclosure are an access control method in a user equipment and the user equipment, which may flexibly control the activation and deactivation of PDCP duplication and the activation and deactivation of a serving cell restriction. The access control method comprises: receiving configuration information related to a data radio bearer (DRB); receiving a media access control element (MAC CE) indicating the activation/deactivation of a packet data convergence protocol layer (PDCP) duplication function of the DRB; when the MAC CE indicates the deactivation of the PDCP duplication function, determining whether the configuration information comprises indication information, the indication information indicating a restriction relationship between a logical channel associated with the DRB and a serving cell which is allowed to be used; and determining a serving cell used for the logical channel according to the result of the determination.

Abstract: A terminal apparatus for communicating with a base station apparatus, the terminal apparatus including: a receiver configured to receive, from the base station apparatus, a Radio Resource Control (RRC) reconfiguration message including a radio bearer configuration information element; and a processing unit configured to, in a case that a radio bearer identity included in the radio bearer configuration information element is not part of a configuration of the terminal apparatus and that the radio bearer configuration information element includes a Service Data Adaptation Protocol (SDAP) configuration information element and that a Protocol Data Unit (PDU) session information element included in the SDAP configuration information element is not part of the configuration of the terminal apparatus, indicate to upper layers that a user-plane resource is configured for a PDU session corresponding to a value of the PDU session information element.

Abstract: A terminal apparatus of the present invention receives setting of an initial DL BWP by using an RRC message, the setting of the initial DL BWP comprises setting a first parameter and a second parameter of a CORESET #0, a value of an identifier of the CORESET #0 is 0, the first parameter represents the size of the CORESET #0, and the second parameter represents the size of the initial DL BWP. The terminal apparatus of the present invention receives a DCI format that schedules a PDSCH in an active DL BWP, and identifies, based on a field in the DCI format, a resource block set to which the PDSCH is allocated. A value of the field is determined based on the size of the DL BWP, the start resource block, and the number of consecutively allocated resource blocks. The size of the DCI format in a USS is determined based on the size of the CORESET #0, and when the field is applied to the active DL BWP, the size of the DL BWP is the size of the CORESET #0.

Abstract: A mobile station apparatus detects a signature not reserved as a dedicated signature informed by a base station. In addition, the mobile station apparatus performs a random access using a randomly selected signature, in case of detecting a signature not reserved as a dedicated signature.

Abstract: A terminal apparatus includes a higher layer processing unit configured to receive first information and second information, and a receiver configured to receive a block and a physical downlink shared channel. The first information includes information for indicating a periodicity of one or more of the blocks. Each of the one or more blocks includes a first synchronization signal, a second synchronization signal, and a physical broadcast channel. The second information includes information for indicating time positions of the one or more blocks included in a certain time period. The physical downlink shared channel is not received in a resource element for a synchronization signal block at a time position of the time positions indicated by the second information.

Abstract: A terminal apparatus includes: a reception unit configured to receive an MIB that configures a first CORESET, receive an SIB1 that configures a second CORESET, receive first information that configures an initial UL BWP and second information that configures an additional UL BWP, and receive a first DCI format that schedules a PUSCH in a common search space; and a transmission unit configured to specify a set of allocated resource blocks based on a first field included in a first DCI format and transmit a PUSCH in an active UL BWP, the active UL BWP being either the initial UL BWP or the additional UL BWP, the first value indicated by a first field is provided based on the size of the initial UL BWP, a first start position that is a start position of a set of allocated resource blocks, and the number of first resource blocks continuously allocated, and the common search space is used for a random access procedure.

Abstract: A technology for a terminal apparatus, a base station apparatus, a communication method, and an integrated circuit which enable efficient communication with reduced complexity of protocol processing is provided. A terminal apparatus for communicating with a base station apparatus receives an RRC connection reconfiguration request message including a Data Radio Bearer (DRB) configuration from the base station apparatus, the DRB configuration includes an SDAP configuration, the SDAP configuration includes information indicating whether an SDAP function is to be enabled or disabled, in a case that the SDAP function is enabled, the SDAP function is configured, and in a case that the SDAP function is disabled, the SDAP function is not configured.

Abstract: A terminal device includes a transmission processing part configured to notify the network of a type of the terminal device, and a reception processing part configured to derive the required number of repetitive transmissions and/or repetitive receptions (the first number of repetitions) on the basis of downlink reference signal received power. The terminal device measures the downlink reference signal received power on the basis of the first measurement period longer than 200 ms, upon deriving the first number of repetitions. The type of the terminal device notified to the network is different from a type of a terminal device employing a measurement period of 200 ms.

Abstract: The present invention provides a base station, a user equipment (UE) and a method executed by the base station. The method executed by the base station comprises: broadcasting to the UE that the base station supports connectivity to a first core network and a second core network, a communication interface between the first core network and the base station being different from a communication interface between the second core network and the base station; receiving a selection of the UE to one of the first core network and the second core network; and initiating, according to the received selection of the UE, connection establishment to the core network selected by the UE. The technical solution provides a core network selection method for a base station (e.g., eLTE eNB) simultaneously supporting two different core networks, so as to correspondingly determining a network interface used for communication with the selected core network, thereby achieving normal communication between the UE and the core network.

Abstract: A method by a User Equipment (UE) is described. The method includes receiving, from a radio access network, one or more radio resource control (RRC) messages. The one or more RRC messages are used to configure a dual connectivity in which the UE communicates with the radio access network using a first set of cell(s) and a second set of cell(s) and to configure a signaling radio bearer (SRB) for the second set of cell(s). The one or more RRC messages are sent via a signaling radio bearer of the first set of cell(s).

Abstract: A terminal apparatus that communicates with a base station apparatus includes: a reception unit configured to receive a configuration of an initial uplink (UL) bandwidth part (BWP) and a configuration of an additional UL BWP via a radio resource control (RRC) message and receive a random access response (RAR) message including an RAR UL grant; and a transmission unit configured to transmit a physical uplink shared channel (PUSCH) in an active UL BWP, wherein one of the initial UL BWP and the additional UL BWP is activated as the active UL BWP, the PUSCH is scheduled by using the RAR UL grant, a first field included in the RAR UL grant is used to indicate frequency resource allocation of the PUSCH, and whether the first field is to be truncated or whether a bit is to be inserted into the first field is determined based on a bandwidth of the initial UL BWP.

Abstract: In a radio system which allocates resources using as units resource blocks which are formed by frequency components and time components, control information for mobile station devices, and identification information which is used to identify a format for a control information transmission channel which transmits the control information is transmitted from the base station device to the mobile station devices by means of the control information transmission channel.

Abstract: A terminal apparatus includes: a higher layer processing unit configured to receive first information and second information; and a receiver configured to receive a block including a first signal, a second signal, a third signal, and a physical broadcast channel, wherein the first information includes information for indicating a periodicity of one or more of the blocks, the second information includes information for indicating time positions of the one or more of the blocks included in a certain time period, a cell ID is detected from the first signal and the second signal, and an index of the block is detected from the third signal.

Abstract: A terminal apparatus configured to receive a measurement configuration from one or more base station apparatuses transmits a first measurement result and a second measurement result, and the first measurement result includes, as measurement results of a serving cell, the measurement results of the serving cell of a first cell group and the serving cell of a second cell group, and the second measurement result includes, as a measurement result of a serving cell, the measurement result of the serving cell of the second cell group.

Abstract: The present disclosure provides a method for obtaining supplementary system information, and a corresponding user equipment and a base station. A method in the user equipment according to the present invention comprises: sending a leader sequence to a base station to request supplementary system information; and receiving a reply message from the base station in response to sending of the leader sequence.

Abstract: Provided is a terminal apparatus for communicating with a base station, the terminal apparatus including: a receiver configured to receive, from the base station apparatus, a Radio Resource Control layer (RRC) reconfiguration message including a list of a Data Radio Bearer (DRB) identity corresponding to a DRB to be released; and a processing unit configured to, in a case that a first DRB identity corresponding to the DRB configured for the terminal apparatus is included in the list, release a Packet Data Convergence Protocol Layer (PDCP) entity associated with the first DRB identity and indicate to a Service Data Adaptation Protocol (SDAP) layer information of the DRB corresponding to the first DRB identity.

Abstract: A communication system includes a terminal apparatus and a base station apparatus. The terminal apparatus communicates with a base station apparatus by carrier aggregation using a plurality of serving cells, where each of the plurality of serving cells has a different frequency. In addition, the terminal apparatus removes a measurement identity relevant to a serving cell of the plurality of serving cells based on that the serving cell was removed.

Abstract: The present application provides a method for establishing/reconfiguring a data bearer that comprises receiving a request message for data bearer establishment/reconfiguration, wherein the request message comprises a data bearer identity used to identify a data bearer and a bearer type indication cell used to indicate a type of a to-be-established/reconfigured data bearer; and establishing/reconfiguring a corresponding data bearer according to the request message. The present application further provides user equipment and a base station for establishing/reconfiguring a data bearer.

Abstract: A technology related to a terminal apparatus, a communication method, and an integrated circuit is provided for efficiently monitoring a status of communication. The terminal apparatus communicates with the base station apparatus by switching between a first frequency and a second frequency in a cell, a timer for monitoring a radio link in the cell starts based on consecutively detecting that out of synchronization occurs a prescribed number of times, the timer stops in the case of switching between the first frequency and the second frequency, and any one of the first frequency and the second frequency is a frequency by which the terminal apparatus has established Radio Resource Control connection.

Abstract: Provided is a terminal apparatus configured to communicate with a base station apparatus. The terminal apparatus includes: a higher layer processing unit configured to receive first information including a setting for semi-persistent channel state information-reference signal (CSI-RS) for measuring channel state information; a medium access control (MAC) layer configured to receive second information including information for activating the semi-persistent CSI-RS; and a receiver configured to receive a physical downlink shared channel (PDSCH). In the terminal apparatus, in a case where the semi-persistent CSI-RS is activated, a resource element to be used for the activated reference signal is not to be used as a resource element for the physical downlink shared channel.