Abstract: A target RAN node (3) receives, from a core network (5), a message requesting a handover of a radio terminal (1) from a bearer-based network to a bearer-less network. This handover request message includes flow information related to at least one session to be established in the bearer-less network in order to transfer at least one packet flow of the radio terminal (1). The target RAN node (3) transmits, to the core network (5), a handover acknowledge response message containing a transparent container that includes a radio resource configuration information derived from the flow information and is to be forwarded to a source RAN node associated (2) through the core network (5). It is thus, for example, possible to appropriately configuring an AS layer of a target RAT in an inter-RAT handover.

Abstract: When a downlink bandwidth part (BWP) is switched from a first BWP to a second BWP without a change of a cell defining synchronization signal block (SSB), if a reference signal type for Radio Link Monitoring (RLM) is set to an SSB type, a radio terminal (12) continues to use for RLM measurements a first SSB associated with the first BWP after switching of the downlink BWP to the second BWP. This for example enables the radio terminal to monitor a suitable Reference Signal (RS) for RLM measurements after switching of the DL active BWP.

Abstract: A radio terminal (1) is configured to transmit, to a radio station (2), a Radio Resource Control (RRC) connection setup complete message including a UE assistance information element indicating which of a plurality of communication architecture types for data packet transmission relating to Cellular Internet of Things (CIoT) the radio terminal desires to use, the radio terminal supports, or the radio terminal is configured with. As a result, with regard to a specific communication procedure involving determination of communication architecture used for a radio terminal serving as a CIoT device, it is for example possible to contribute to enhancement of efficiency of the communication procedure, reduction of signaling messages, or appropriate CN selection.

Abstract: A communication terminal capable of determining whether or not it can perform DC, a base station, and a communication method are provided. A communication terminal (30) according to the present disclosure includes a communication unit (31) that simultaneously communicates with a master base station (10) associated with a first radio access technology and a secondary base station (20) associated with a second radio access technology, and a control unit (32) that specifies, when it is notified by the master base station (10) that it can provide dual connectivity using the second radio access technology, at least one frequency band supported by the secondary base station (20), the secondary base station being configured to provide the dual connectivity in cooperation with the master base station (10).

Abstract: A communication system is disclosed in which a distributed base station apparatus comprises a central unit for control plane signalling (CU-CP), at least one a central unit for user plane signalling (CU-UP), and at least one distributed unit. The CU-CP obtains information indicating whether a security configuration is supported by a CU-UP and selects a security configuration for an item of user equipment (UE) based on the obtained information.

Abstract: A base station apparatus (130, 220) in a network (410) transmits V2X support information indicating that a V2X service is supported by the network (410). In response to receiving V2X support information, a radio terminal (100, 120) transmits, to the network (410), V2X terminal information indicating that the radio terminal (100, 120) is interested in the V2X service. The network (410) transmits V2X configuration to the radio terminal (100, 120) in response to receiving the V2X terminal information transmitted from the radio terminal (100, 120). The radio terminal (100, 120) receives the V2X configuration and performs V2X communication in accordance with the V2X configuration. It is thus, for example, possible to contribute to achievement of a procedure for performing provisioning for the V2X service on the radio terminal that intends to use the V2X service.

Abstract: A second RAN node (2) associated with a second RAT sends a radio resource configuration of the second RAT to a radio terminal (3) via a first RAN node (1) associated with a first RAT. The radio resource configuration explicitly or implicitly indicates at least one numerology that is included in multiple numerologies supported by the second RAT and is different from a reference numerology. It is thus, for example, possible to allow a radio terminal to be configured with a numerology of a cell served by a secondary gNB or a target gNB in Inter-RAT Dual Connectivity between E-UTRA and NR and in a handover from E-UTRA to NR.

Abstract: A base station (13) is configured to receive, from a Machine-to-machine (M2M) terminal (11) or a core network (14), history information indicating whether or not specific coverage enhancement processing was executed in previous communication with the M2M terminal (11). Further, the base station (13) is configured to control communication using the specific coverage enhancement processing between the M2M terminal (11) and the base station (13) based on the history information received from the M2M terminal (11) or the core network (14). It is thus possible to contribute to improving efficiency of determination regarding whether to apply a special coverage enhancement processing to the M2M terminal.

Abstract: A radio terminal (3) can perform carrier aggregation using a first cell (10) of a first radio station (1) and a second cell (20) of a second radio station (2). The first radio station (1) performs, with the radio terminal (3), radio resource control for the first cell (10) and the second cell (20) in order to perform the carrier aggregation. At least one of the second radio station (2) and the radio terminal (3) is configured to transmit, to the first radio station (10), information about a problem occurring in a radio link in the second cell (20) between the second radio station (20) and the radio terminal (30) while the carrier aggregation of the first cell (10) and the second cell (20) is being performed.

Abstract: A method for maintaining finer synchronicity requirement (e.g. less than 1 ?s synchronicity) between sync master clock and UE clock in NR IIOT is disclosed. The present disclosure introduces a method to apply the UE clock update depending on the UL timing advance reception time. The present disclosure also introduces a new signaling to indicate scheduling request ID for propagation delay change and based on which triggering timing advance to maintain the finer synchronicity requirement between sync master and UE clock. This disclosure also introduces a new method to compute the propagation delay change at UE, and thereby performing propagation delay compensation to maintain finer synchronicity requirement between sync master and UE clock.

Abstract: A method performed by apparatus for providing access to a communication network is disclosed. The method includes transmitting to at least one user equipment (UE) system information including random-access configuration information for configuring the UE to perform random-access procedures. The random-access configuration information includes a plurality of different physical random-access channel (PRACH) preamble formats that can be applied by the UE in a random-access procedure. The apparatus receives, from the UE, signalling for initiating a random-access procedure, the signalling including a random-access preamble having a one of the plurality of different PRACH preamble formats and communicates with the UE to continue and complete the random-access procedure initiated by the UE.

Abstract: In response to receiving from a source RAN node (2), on a direct interface (101), a message requesting a handover of a radio terminal (1) from a first network to a second network, a target RAN node (3) receives at least one of slice information and flow information from a core network (5), and controls communication of the radio terminal (1) based on at least one of the slice information and the flow information. The slice information relates to a network slice in the second network. The flow information relates to at least one session to be established in the second network, serving as a bearer-less network, in order to transfer at least one packet flow of the radio terminal (1). It is thus possible, for example, to provide an Inter-RAT handover procedure involving transfer of handover signaling messages on a direct inter-base-station interface.

Abstract: A radio access network (RAN) node (11) is configured to send, to another RAN node (12), first control information regarding at least one of one or more bandwidth parts (BWPs) configured in a system bandwidth. It is thus, for example, possible to contribute to inter-radio access network (RAN) node (e.g., inter-gNB) signaling enhanced to handle bandwidth parts.

Abstract: A wireless communication system comprises: a setting notifying means for notifying, to a radio terminal, setting information related to at least one of the radio terminal's collection of measurement information and the radio terminal's reporting of the measurement information to a radio network; a status notifying means for notifying, to the radio network, a status related to at least one of the radio terminal's collection of the measurement information and the radio terminal's reporting of the measurement information; and a re-establishing means for receiving the status and determining whether to re-establish the setting information.

Abstract: A second RAN node (2) sends to a radio terminal (3), via a first RAN node (1), an indication of available on-demand system information that is available in a cell of the second RAN node (2). It is thus, for example, possible to enabling notifying a UE of an indication about on-demand system information available in a cell served by a secondary gNB of Inter-RAT dual connectivity between E-UTRA and NR, or available in a cell served by a target gNB of Inter-RAT handover from E-UTRA to NR.

Abstract: A master RAN node (1) sends, to a control plane function (5) in a core network (4), a modification request for modification of a first PDU session already established between a radio terminal (3) and a user plane function (6) in the core network (4). The modification request implicitly or explicitly indicates that PDU session split is needed for the first PDU session. The modification request causes the control plane function (5) to control the user plane function (6) to move a specific one or more QoS flows of a plurality of QoS flows associated with the first PDU session from a first tunnel between the user plane function (6) and the master RAN node (1) to a second tunnel between the user plane function (6) and a secondary RAN node (2). This contributes, for example, to implementing PDU session split in a radio communication network.

Abstract: A radio access network (RAN) node (11) is configured to send, to another RAN node (12), first control information regarding at least one of one or more bandwidth parts (BWPs) configured in a system bandwidth. It is thus, for example, possible to contribute to inter-radio access network (RAN) node (e.g., inter-gNB) signaling enhanced to handle bandwidth parts.

Abstract: Disclosed is a radio communication system wherein radio terminals can communicate using a plurality of component carriers having different frequencies. The communication system has a reception start timing control means for commonly controlling the cycle of reception start timing for predetermined channels in at least some of the component carriers assigned to the radio terminals; and a reception control means for controlling the reception interval of said predetermined channels, said reception intervals being started at the reception start times in at least some of the component carriers assigned to the radio terminals.

Abstract: In response to receiving from a source RAN node (2), on a direct interface (101), a message requesting a handover of a radio terminal (1) from a first network to a second network, a target RAN node (3) receives at least one of slice information and flow information from a core network (5), and controls communication of the radio terminal (1) based on at least one of the slice information and the flow information. The slice information relates to a network slice in the second network. The flow information relates to at least one session to be established in the second network, serving as a bearer-less network, in order to transfer at least one packet flow of the radio terminal (1). It is thus possible, for example, to provide an Inter-RAT handover procedure involving transfer of handover signaling messages on a direct inter-base-station interface.

Abstract: A radio access network (RAN) node (11) is configured to send, to another RAN node (12), first control information regarding at least one of one or more bandwidth parts (BWPs) configured in a system bandwidth. It is thus, for example, possible to contribute to inter-radio access network (RAN) node (e.g., inter-gNB) signaling enhanced to handle bandwidth parts.