Abstract: A radio communication apparatus includes a transmitter configured to transmit a message to a different radio communication apparatus, and processor circuitry configured to perform a process on the message that is transmitted; and further configured to, when including a first parameter in a first Radio Resource Control (RRC) message that is to be transmitted to the different radio communication apparatus and including a second parameter in a first Data Radio Bearer (DRB) configuration parameter that is included in the first RRC message, control to include a third parameter in the first DRB configuration parameter.

Abstract: A user equipment in a wireless communications system supporting direct communication between user equipments selects a sidelink destination group (ProSe destination) associated with a sidelink logical channel having a highest logical channel priority among sidelink logical channels, which have data available for transmission in a sidelink control period (SC period) and which have not previously been selected in the same SC period, wherein each of the sidelink logical channels belongs to a sidelink destination group, each of the sidelink logical channels is allocated to a logical channel group (LCG) depending on a priority of said each sidelink logical channel and on a priority of the logical channel group, and the logical channel group is defined per sidelink destination group. The user equipment allocates radio resources to sidelink logical channels belonging to the selected sidelink destination group in decreasing priority order, and transmits the data using the allocated radio resources.

Abstract: A terminal apparatus for communicating with a base station apparatus includes a receiver configured to receive, from the base station apparatus, a message indicating mobility from a first Radio Access Technology (RAT) to a second RAT, and a processing unit configured to attempt to select a cell. A requirement for the processing unit to attempt to select a cell in the second RAT in a case that processing of the mobility in accordance with the message fails is that establishment of a connection to the second RAT is not successful and first information is included in the message.

Abstract: A second radio communication device includes, a receiver configured to receive a Radio Resource Control (RRC) message from a first radio communication device, and a controller configured to, when the RRC message includes a first parameter and a second parameter, control to perform processing according to the second parameter after performing processing of resuming a radio bearer in a suspended state.

Abstract: Provided is a terminal apparatus, wherein based on detection of a request, for a PDCP SDU received from an upper layer, the terminal apparatus performs header compression of the PDCP SDU by using second header compression processing, performing ciphering by using a second ciphering algorithm, a second ciphering key, and a COUNT value, performs integrity protection of the PDCP SDU by using a second integrity protection algorithm, a second integrity protection key, and the COUNT value, and submits a PDCP PDU created, to the second RLC entity.

Abstract: The present disclosure relates to a transmitting device for transmitting vehicular data via a sidelink interface to one or more receiving devices. The transmitting device performs autonomous radio resource allocation for transmitting the vehicular data via the sidelink interface. An application layer generates the vehicular data and forwards the vehicular data together with a priority indication and one or more quality of service parameters to a transmission layer responsible for transmission of the vehicular data via the sidelink interface. The transmission layer performs autonomous radio resource allocation based on the received priority indication and the one or more quality of service parameters. The transmission layer transmits the vehicular data via the sidelink interface to the one or more receiving devices according to the performed autonomous radio resource allocation.

Abstract: Provided are systems and methods for transmitting data over a wireless channel from a data transmitting node to a data receiving node in a communication system. The data transmitting node comprises second-layer processing circuitry for receiving at least one second-layer SDU, to be mapped onto a resource allocated for data transmission, and for generating a second-layer PDU, including the at least one second-layer SDU and at least one second-layer control element, and first-layer processing circuitry for receiving the second-layer PDU generated by the second-layer processing circuitry and for mapping the second-layer PDU onto the resource allocated for data transmission.

Abstract: A terminal apparatus applies a configuration of an RRC reconfiguration message to a second configuration which is identical to a part or entirety of a first configuration in a case that the RRC reconfiguration message includes first information, and applies the configuration of the RRC reconfiguration message to the first configuration in a case that the RRC reconfiguration message includes no first information.

Abstract: A user equipment in a wireless communications system supporting direct communication between user equipments selects a sidelink destination group (ProSe destination) associated with a sidelink logical channel having a highest logical channel priority among sidelink logical channels, which have data available for transmission in a sidelink control period (SC period) and which have not previously been selected in the same SC period, wherein each of the sidelink logical channels belongs to a sidelink destination group, each of the sidelink logical channels is allocated to a logical channel group (LCG) depending on a priority of said each sidelink logical channel and on a priority of the logical channel group, and the logical channel group is defined per sidelink destination group. The user equipment allocates radio resources to sidelink logical channels belonging to the selected sidelink destination group in decreasing priority order, and transmits the data using the allocated radio resources.

Abstract: A terminal apparatus for communicating with a base station apparatus includes a receiver configured to receive, from the base station apparatus, a Radio Resource Control (RRC) message indicating handover from NR to a second Radio Access Technology (RAT), and a processing unit configured to perform the handover in accordance with the RRC message. The processing unit releases a Packet Data Convergence Protocol (PDCP) entity and a Service Data Adaptation Protocol (SDAP) entity related to a radio bearer for a Multicast Broadcast Service (MBS) configured for the terminal apparatus, based at least on that the handover has completed, and in a case that the handover fails, the processing unit does not release the PDCP entity and the SDAP entity related to the radio bearer for the MBS configured for the terminal apparatus.

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 base station device includes, a transmitter configured to transmit a Radio Resource Control (RRC) message including information for configuring a secondary cell group to a terminal device, and a controller configured to control to refrain from performing first processing on the terminal device when the secondary cell group that is configured for the terminal device through the RRC message is in a first state.

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 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 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: The present disclosure relates to a transmitting device for transmitting vehicular data via a sidelink interface to one or more receiving devices. The transmitting device performs autonomous radio resource allocation for transmitting the vehicular data via the sidelink interface. An application layer generates the vehicular data and forwards the vehicular data together with a priority indication and one or more quality of service parameters to a transmission layer responsible for transmission of the vehicular data via the sidelink interface. The transmission layer performs autonomous radio resource allocation based on the received priority indication and the one or more quality of service parameters. The transmission layer transmits the vehicular data via the sidelink interface to the one or more receiving devices according to the performed autonomous radio resource allocation.

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: Provided are systems and methods for transmitting data over a wireless channel from a data transmitting node to a data receiving node in a communication system. The data transmitting node comprises second-layer processing circuitry for receiving at least one second-layer SDU, to be mapped onto a resource allocated for data transmission, and for generating a second-layer PDU, including the at least one second-layer SDU and at least one second-layer control element, and first-layer processing circuitry for receiving the second-layer PDU generated by the second-layer processing circuitry and for mapping the second-layer PDU onto the resource allocated for data transmission.

Abstract: A UE includes an EUTRA-CMR reception unit that receives a codec mode request (EUTRA-CMR) including a codec mode that is determined by an eNB in accordance with a radio condition of the UE, a mode switching notification unit that notifies an encoder of switching to the codec mode included in the received codec mode request; and a mode switching acknowledgement unit that transmits a response message to the eNB when confirming that the encoder switches the codec mode.