Abstract: A communication apparatus configured to communicate with a plurality of networks by a plurality of subscriber identity modules comprises: a controller configured to include capability information indicating capability of the communication apparatus regarding a paging cause in a registration request message; and a transmitter configured to transmit the registration request message including the capability information to a certain network included in the plurality of networks.

Abstract: A base station according to an aspect of the present disclosure comprises: a network communicator configured to receive, from a neighboring base station, information for determination for determining whether or not the neighboring base station is capable of communicating with a capability-limited user equipment having a limited communication capability; and a controller configured to acquire the information for determination.

Abstract: A base station used broadcasts system information in a cell, the system information being used to allow a user equipment existing in the cell of the base station to perform cell reselection using a neighboring cell different from the cell as a candidate. The base station is configured to broadcast the system information including a second neighboring cell list different from a first neighboring cell list for a general user equipment as a neighboring cell list indicating the neighboring cell to be excluded from the candidate or the neighboring cell to be selected as the candidate. The second neighboring cell list is the neighboring cell list for a specific user equipment having a lower communication capability than a communication capability of the general user equipment.

Abstract: A user apparatus includes a communication unit configured to communicate with a first base station apparatus and a second base station apparatus, wherein the first base station apparatus is a master node in a New Radio (NR) radio communication system and the second base station apparatus is a secondary node in the NR radio communication system; a reception unit configured to receive from the first base station apparatus an instruction to measure a system frame number and frame timing difference (SFTD) representing a system frame number and frame timing difference between cells; a control unit configured to measure SFTD between a cell of the first base station apparatus and a cell of the second base station apparatus based on the instruction to measure SFTD; and a transmission unit configured to transmit to the first base station apparatus a measurement result including the measured SFTD.

Abstract: A network node includes: a control unit configured to configure an information element in a field included in a message between network nodes in a case where the field is mandatory in the message between the network nodes, the message being used for performing communication configuration related to a user apparatus; and a transmission unit configured to transmit the message between the network nodes including the field in which the information element is configured, wherein the field is mandatory in the message between the network nodes in a case where a predetermined condition is satisfied.

Abstract: A terminal includes a receiving unit which receives a system information block 1 (SIB1); and a control unit which determines: whether or not first information indicating that a Reduced Capability (RedCap) terminal is allowed to camp on a cell is included in the SIB1, and whether or not second information indicating that whether or not the cell is barred for a RedCap terminal with a specific number of receivers is included in the SIB1 in a case where the first information is included in the SIB1, wherein the control unit determines whether or not the cell is barred for the RedCap terminal with the specific number of receivers based on the second information.

Abstract: A user equipment according to an aspect of the present disclosure performs communication with a base station in a BWP that is a subset of a total bandwidth of a cell of the base station. The user equipment comprises: a communicator configured to perform the communication using an active BWP to be used for the communication with the base station among a plurality of the BWPs configured in the user equipment; and a controller configured to store a measurement result obtained by performing measurement on an SSB when a BWP with the SSB, which is a BWP in which the SSB is transmitted from the base station among the plurality of BWPs, is the active BWP. The controller is configured to control the communication using the stored measurement result when a BWP without the SSB, which is a BWP in which the SSB is not transmitted from the base station among the plurality of BWPs, is the active BWP.

Abstract: A communication apparatus according to an aspect of the present disclosure comprises: a communicator configured to receive, from a base station, information indicating an absolute radio frequency channel number of a synchronization signal and a physical broadcast channel block (SSB) together with information indicating a dedicated parameter used for communication in a downlink bandwidth part; and a controller configured to perform measurement using the SSB based on the information indicating the absolute radio frequency channel number.

Abstract: An apparatus according to an aspect of the present disclosure includes a memory storing a program; and one or more processors configured to execute the program to: receive, from a first network, a radio resource control, RRC, Reconfiguration message including first information for configuring the apparatus to transmit a UE Assistance Information message including second information, the second information being used for indicating a preferred RRC state of the apparatus in a case of leaving an RRC connected state; and transmit, to the first network, the UE Assistance Information message including the second information based on the first information before switching from the first network to a second network, in the RRC connected state in the first network.

Abstract: A user equipment according to an aspect of the present disclosure performs communication with a base station in a BWP that is a subset of a total bandwidth of a cell of the base station. The user equipment comprises: a communicator configured to perform the communication using an active BWP to be used for the communication with the base station among a plurality of the BWPs configured in the user equipment; and a controller configured to store a downlink frame timing in a BWP with an SSB when the active BWP is the BWP with the SSB, which is the BWP in which the SSB is transmitted from the base station. The controller is configured to adjust an uplink transmission timing in the active BWP with reference to the stored downlink frame timing when the active BWP is a BWP without the SSB, which is the BWP in which the SSB is not transmitted from the base station.

Abstract: A user equipment according to an aspect of the present disclosure performs communication with a base station in a BWP that is a subset of a total bandwidth of a cell of the base station. The user equipment comprises: a communicator configured to perform the communication using an active downlink BWP used for downlink communication with the base station and an active uplink BWP used for uplink communication with the base station; and a controller configured to perform first uplink power control for calculating uplink transmission power on the active uplink BWP by using a path loss estimation value calculated based on a measurement result of received power relative to an SSB when the SSB is transmitted from the base station in the active downlink BWP. When the SSB is not transmitted in the active downlink BWP, the controller performs second uplink power control for correcting calculation of the uplink transmission power or the path loss estimation value in the first uplink power control.

Abstract: A receiving unit which receives a Radio Resource Control (RRC) message and a Non Access Stratum (NAS) message; and a control unit which determines a period of monitoring physical downlink control channel candidates in a paging search space, wherein the control unit controls whether or not to use an extended discontinuous reception (eDRX) parameter included in the RRC message to determine the period of monitoring the physical downlink control channel candidates in the paging search space based on whether or not the eDRX parameter is included in the RRC message in an RRC inactive state.

Abstract: A receiving unit which receives an RRC reconfiguration message including information about the configuration of one or more candidate cells and information about an execution condition of a specific procedure for the candidate cells; a control unit which controls the execution of the specific procedure based on the information about the configuration and the information about the execution condition; and a transmitting unit which transmits a message including information about a reason for a failure when the execution of the specific procedure fails.

Abstract: A terminal includes: a receiving unit which receives system information including information indicating a minimum reception level in a cell; and a control unit which controls cell selection and/or cell reselection based on a reception level value derived based on the information used for indicating the minimum reception level and a value for a terminal with a specific number of receivers to the minimum reception level, wherein the value for the terminal with the specific number of receivers to the minimum reception level is a predetermined value for a terminal with a single receiver.

Abstract: A terminal (200) configures PCell and SCell simultaneously. The terminal (200) includes a receiving unit (220) that receives a reference signal for use in a detection of a beam failure in the SCell, and a controller (270) that performs at least one of the detection of the beam failure and a beam failure recovery request based on a reception quality of the reference signal. The controller (270) performs at least one of the detection of the beam failure and the beam failure recovery request when a predetermined condition is satisfied.

Abstract: A terminal includes a receiver configured to receive a Timing Advance command; and a controller configured to control a timer related to uplink time alignment, wherein, in response to receiving the Timing Advance command by the receiver, the controller starts the timer, and wherein, upon receiving, by the receiver, a contention resolution message, the controller stops the timer after a time period from the reception of the contention resolution message.

Abstract: A user equipment that communicates with a base station in a mobile communication system includes: a receiving unit that receives a change message of system information from the base station; and a control unit that requests the base station to transmit the system information when the receiving unit has received the change message and then has not received the system information.

Abstract: A UE (200) performs a random access procedure with a gNB (100). The UE (200) transmits to a network via a radio base station at least one of a synchronization signal block used for performing the random access procedure, a reception quality in the synchronization signal block, a group of random access preambles, and number of times for which power ramping was performed in the random access procedure.

Abstract: A terminal includes: a receiving unit configured to: receive system information including information used for configuring a resource for a reference signal for tracking and receive on a physical downlink control channel, downlink control information used for scheduling of a physical downlink shared channel; and a control unit configured to: use, in an idle state or an inactive state, the resource for the reference signal for tracking, the resource being configured based on the information used for configuring the resource for the reference signal for tracking, and control, in a connected state, reception of the physical downlink shared channel such that the resource configured based on the information used for configuring the resource for the reference signal for tracking is ignored.

Abstract: A terminal includes a receiving unit that receives configuration information on extended Discontinuous Reception (eDRX) and a control unit that performs control to monitor control channel candidates inside a paging search space in each of reception periods in a given Hyper-System Frame Number (H-SFN) indicated by the configuration information on eDRX, wherein the configuration information includes given information related to the configuration of a start position of the reception period in the given H-SFN.