Abstract: A terminal apparatus for communicating with a base station apparatus includes a receiver configured to receive a Radio Resource Control (RRC) release message from the base station apparatus, and a processing unit. The processing unit establishes a radio bearer for a Multicast Broadcast service (MBS) for delivery mode 1. The processing unit determines whether or not a suspend configuration parameter is included in the RRC release message, and in a case that the processing unit determines that the suspend configuration parameter is included, the processing unit suspends the radio bearer for the MBS for the delivery mode 1, and in a case that the processing unit determines that the suspend configuration parameter is not included, the processing unit does not suspend the radio bearer for the MBS for the delivery mode 1. The suspend configuration parameter is a parameter indicating a configuration for an RRC_INACTIVE state.

Abstract: A terminal apparatus for communicating with a base station apparatus includes a receiver configured to receive an RRC reconfiguration message from the base station apparatus, and a processing unit. The processing unit resumes an MRB, based at least on that the RRC reconfiguration message is a first RRC reconfiguration message received after successful completion of an RRC reestablishment procedure.

Abstract: A first terminal apparatus for performing sidelink communication receives a first message from a second terminal apparatus, determines information based on a Reference Signal Received Power (RSRP) of the first message received from the second terminal apparatus, and transmits a second message including the information to a third terminal apparatus, wherein the first message and the second message are messages used to select a terminal apparatus being responsible to forward a sidelink transmission of the second terminal apparatus to the third terminal apparatus.

Abstract: A terminal apparatus includes a receiver configured to receive a first RRC message and/or a second RRC message from the base station apparatus, and a processing unit. In a case that an MRB of a first type is established with the first RRC message, and all of radio bearers are to be released, the processing unit releases the MRB of the first type. In a case that the MRB of a second type is established with the second RRC message, and all of the radio bearers are to be released, the processing unit does not release the MRB of the second type.

Abstract: A terminal apparatus for communicating with a base station apparatus includes a receiver configured to receive a Radio Resource Control (RRC) reconfiguration message including a first parameter from the base station apparatus, and a processing unit. The processing unit performs first processing on each session not to be added with the first parameter among the sessions already configured for the terminal apparatus, based at least on that a parameter indicating a full configuration is included in the RRC reconfiguration message. The first parameter is an MRB configuration list parameter. The first processing includes indicating to an upper layer that a user plane resource for each session not to be added has been released.

Abstract: A terminal apparatus includes: a receiver that receives an RRC message from a base station apparatus; and a processing unit that performs processing of RRC. The processing unit causes, when first information is in the RRC message, a first timer to start in a running state, and considers, at least when a random access problem indication is received from a MAC entity of the group and the first timer is not running, or when a random access problem indication is received from a MAC entity of the group and the first timer is running under a specific condition, a radio link failure for the group to be detected. When the radio link failure for the group is detected and that the first timer is running under the specific condition, the processing unit suspends transmission of all radio bearers in the group, and resets the MAC entity of the group.

Abstract: A terminal apparatus includes a receiver configured to receive a radio resource control (RRC) reconfiguration message from a base station apparatus, and a controller configured to configure a parameter based on the parameter included in the RRC reconfiguration message. The parameter includes at least identity information of a target cell and a configuration of a subcarrier spacing, and the configuration of the subcarrier spacing is configured for each of the target cells.

Abstract: A leaning vehicle including a vehicle body frame, at least one steerable wheel, a handlebar, of which the manipulation by a rider generates a steering torque, a steering actuator steering the at least one steerable wheel, a roll rate sensor detecting a roll rate of the vehicle body frame, and a steering actuator controller. The steering actuator controller includes a torque estimation section that receives an input to thereby generate an estimated value of the steering torque, and a current determination section that obtains a control current based on the estimated valued of the steering torque generated by the torque estimation section, and outputs the control current to the steering actuator to control the steering actuator. The input of the torque estimation section includes the roll rate obtained from the roll rate sensor, but is free from any value of the steering torque detected by a torque sensor.

Abstract: A terminal apparatus for communicating with a base station apparatus via a relay terminal apparatus determines whether to measure a reference signal received power of some or all of measurement objects based on a reference signal received power of the relay terminal apparatus and a threshold included in a measurement parameter.

Abstract: The present disclosure provides a technology pertaining to a terminal device, a base station device, a method and an integrated circuit which can reduce the complexity of protocol processing and perform efficient communications. The terminal device includes: a receiving unit which receives an RRC connection reconfiguration message from the base station device; and a processing unit, wherein, when information for indicating that full configuration is applied is included in the RRC connection reconfiguration message, on the basis of the terminal device performing an E-UTRA/5GC or NGEN-DC, performs an RLC entity re-establishment, an NR PDCP entity release, an RLC entity release, a logical channel release, and a DRB identifier on a DRB which corresponds to each DRB identifier set by the terminal device release, and performs an SDAP entity notification, which corresponds to the DRB, of a release of the DRB.

Abstract: A terminal apparatus that communicates with one or multiple base station apparatuses includes: a receiver configured to receive an RRC connection reconfiguration message including a DRB configuration from a base station apparatus of the one or multiple base station apparatuses; and a processing unit configured to associate an DRB that is established with an EPS bearer identity included in information of a DRB configuration in a case that information indicating that a full configuration is applied is included in the RRC connection reconfiguration message received by the receiver, a DRB identity included in the information of the DRB configuration is not present in a part of a current configuration of the terminal apparatus, and an LTE PDCP entity is established in the DRB that is established and has the DRB identity.

Abstract: A terminal apparatus is provided. The terminal apparatus includes a receiver configured to receive a first message from a base station apparatus, and a processing unit configured to modify first data radio bearer configuration configured for the terminal apparatus, based on the first message. A first PDCP entity is reconfigured as a packet data convergence protocol (PDCP) entity for the first data radio bearer. A first secrecy key for a source and a second secrecy key for a target are configured for the first PDCP entity as secrecy keys for the first data radio bearer. In a case that the first message includes first information and second information, the second secrecy key for the target of the first PDCP entity is configured based on the second information. In a case that the first message does not include the first information, the first secrecy key for the source is applied to the second secrecy key for the target of the first PDCP entity.

Abstract: A terminal apparatus for which a master cell group and a secondary cell group are configured includes an RRC entity. The RRC entity receives a first reporting from a lower layer entity, and generates a message for requesting activation of the secondary cell group, based on the first reporting.

Abstract: A terminal apparatus for communicating with a base station apparatus, the terminal apparatus including: a receiver configured to receive an RRC reconfiguration message from the base station apparatus; and a processing unit, wherein the processing unit establishes a PDCP entity in accordance with the RRC reconfiguration message, applies, to the PDCP entity, a first ciphering algorithm, a first ciphering key, a first integrity protection algorithm, and a first integrity protection key provided by an upper layer, and based on a first request made by the upper layer, applies, to the PDCP entity, a second ciphering algorithm, a second ciphering key, a second integrity protection algorithm, and a second integrity protection key provided by the upper layer.

Abstract: A terminal apparatus for communicating with a second terminal apparatus via a first terminal apparatus is responsible to relay communication between the first terminal apparatus and the second terminal apparatus. The terminal apparatus receives a sidelink transmission including first Sidelink Control Information (SCI) and a sidelink transmission including second SCI corresponding to the first SCI, measures a Sidelink Reference Signal Received Power (SL-RSRP) from the sidelink transmission including the first SCI, and associates the measured SL-RSRP with an identifier included in the second SCI, and notifies a higher layer of the measured SL-RSRP and the identifier, the identifier indicating a transmission source of the sidelink transmission including the first SCI.

Abstract: A terminal apparatus for communicating with a first terminal apparatus and a second terminal apparatus is responsible to relay communication between the first terminal apparatus and the second terminal apparatus, and includes a processing unit and a transmitter, and the processing unit transmits a sidelink reception configuration for the first terminal apparatus to the second terminal apparatus.

Abstract: A terminal apparatus includes: a reception unit configured to receive an RRC reconfiguration message including a DRB configuration and a processing unit, wherein the processing unit establishes an SDAP entity based on conditions that a DRB identity included in the DRB configuration is not part of a configuration of the terminal apparatus, an SDAP configuration is included in the DRB configuration, and an SDAP entity corresponding to a PDU session information element included in the SDAP configuration does not exist, and indicates establishment of a user-plane resource for a PDU session to an upper layer based on an additional condition that the SDAP entity corresponding to the PDU session information element does not exist before the RRC reconfiguration message is received.

Abstract: A terminal apparatus for communicating with a first terminal apparatus and a second terminal apparatus is responsible to relay communication between the first terminal apparatus and the second terminal apparatus. The terminal apparatus measures a sidelink Reference Signal Received Power (SL-RSRP) in each of communication with the first terminal apparatus and communication with the second terminal apparatus, and determines whether the two SL-RSRPs are equal to or greater than a threshold and notifies the first terminal apparatus that the first terminal apparatus and the second terminal apparatus are in proximity in a case that the two SL-RSRPs are determined to be equal to or greater than the threshold, and does not notify the first terminal apparatus that the first terminal apparatus and the second terminal apparatus are in proximity in a case that the two SL-RSRPs are not determined to be equal to or greater than the threshold.

Abstract: A terminal apparatus for communicating with a second terminal apparatus via a first terminal apparatus. The third terminal apparatus receives a sidelink transmission from the second terminal apparatus to the first terminal apparatus, measures a sidelink Reference Signal Received Power (SL-RSRP) from the received sidelink transmission, and determines whether the SL-RSRP is equal to or greater than a threshold, and notifies a higher layer that the second terminal apparatus is in proximity in a case that the SL-RSRP is determined to be equal to or greater than the threshold, and does not notify the higher layer that the second terminal apparatus is in proximity in a case that the SL-RSRP is not determined to be equal to or greater than the threshold.

Abstract: A terminal apparatus for communicating with a first terminal apparatus and a second terminal apparatus is responsible to relay communication between the first terminal apparatus and the second terminal apparatus, and transmits, to the second terminal apparatus, a configuration for sidelink reception used for communication with the first terminal apparatus.