Abstract: A user equipment (UE) includes a transceiver and circuitry. The circuitry detects, while in a procedure for transmitting first data in an inactive state, that second data are to be transmitted in a connected state, and determines whether or not there is a transmission opportunity to wait for. When it is determined that there is no transmission opportunity to wait for or the transmission opportunity to wait for is no longer expected to occur, the circuitry initiates a random access channel (RACH) procedure for entering a connected state. When, on the other hand, it is determined that there is the transmission opportunity to wait for and the transmission opportunity occurs, the circuitry controls the transceiver to transmit, using the transmission opportunity, a traffic indication indicating the detection of the second data.

Abstract: The present disclosure provides a transceiver device, comprising circuitry, which, in operation, repeats, on a medium access control (MAC) layer, a scheduling request by instructing a transceiver to transmit the scheduling request on a plurality of opportunities of a physical uplink control channel (PUCCH). The transceiver, in operation, transmits the scheduling requests over the PUCCH.

Abstract: The present disclosure relates to a user equipment, UE, comprising the following. A processor determines a first data volume threshold and determines to transmit small data, available for transmission, in an inactive state or in a connected state, based on a volume of the available small data and the first data volume threshold. A transmitter performs transmission of the available small data. The first data volume threshold is to be used for determining whether to perform the transmission of available small data in the inactive state using periodic radio resources that are usable for transmission of small data without a prior scheduling request from the UE, the periodic radio resources being allocated in advance by a serving base station. On the other hand, the first data volume threshold is not to be used for determining whether to perform a random-access-based transmission of available small data in the inactive state.

Abstract: The present disclosure relates to a source base station. The source base station comprises a processing circuitry that generates a user equipment packet duplication status. The user equipment packet duplication status includes information on the status of uplink packet duplication performed by a user equipment with the source base station and at least one further base station. The information on the status of uplink packet duplication is per uplink radio bearer, one or more uplink radio bearers being established between the user equipment and the source base station. The source base station further comprises a transmitter that transmits the user equipment packet duplication status to a target base station which is the target of a handover from the source base station performed for the user equipment.

Abstract: The present disclosure relates to a user equipment, with a processor which upon being triggered by a random access events, determines random access transmission parameters to be used by the UE for transmitting a random access message to its base station. At least part of the random access transmission parameters are determined based on the random access event that triggered the transmission of the random access message and on random access configuration information. The random access configuration information associates each of a plurality of random access events with a set of random access transmission parameters among a plurality of random access transmission parameters usable by the user equipment to transmit a random access message to the base station. A transmitter of the UE transmits the random access message to the base station using the determined random access transmission parameters.

Abstract: The present disclosure relates to a user equipment (UE) which comprises a transmitter that transmits at least one data packet based on a transmitting window having a transmitting window size. A receiver of the UE receives reception feedback regarding the at least one transmitted data packet. Processing circuitry of the UE determines, based on at least the received reception feedback, whether to change the transmitting window size for the transmitting window to be used at least for transmitting further data packets.

Abstract: The present disclosure relates to a user equipment (UE) which comprises a transmitter, which transmits a signal to a base station over a channel, wherein the signal is transmitted based on an initial channel quality information indicating a first channel quality of the channel. A receiver of the UE receives a transmission quality information indicating a second channel quality of the channel used for transmitting the signal. A processing circuitry of the UE estimates a transmission quality based on the initial channel quality information and the transmission quality information, wherein the transmission quality indicates whether the transmission of the signal over the channel was successful or not.

Abstract: The present disclosure relates to a user equipment (UE) which monitors, during a first time period, a downlink channel of an unlicensed radio cell for a channel occupancy signal transmitted by a base station via the unlicensed radio cell. The channel occupancy signal indicates that the base station occupies the downlink channel. The UE receives the channel occupancy signal during the first time period from the base station and determines that the base station occupies the downlink channel based on the received channel occupancy signal. After determining that the base station occupies the downlink channel, the UE monitors, during a second time period, the downlink channel for downlink control information regarding a downlink transmission to be received by the user equipment. The UE receives the downlink control information during the second time period and receives subsequently the downlink transmission from the base station based on the received downlink control information.

Abstract: The present disclosure relates to a mobile terminal and base station and respective operation methods. The mobile terminal comprises circuitry, which in operation, determines a condition for requesting on-demand a transmission of other system information; performs a random access procedure; and receives via broadcast a system information message including the on-demand requested other system information. The system information request message of the random access procedure includes an information element with a bit-pattern conforming to a specific format with at least a part of the bit-pattern for requesting the other system information. And the contention resolution message of the random access procedure includes the same, or the same part of the bit-pattern for detecting collisions during the random access procedure.

Abstract: The present disclosure relates to a user equipment (UE), comprising the following. A processor of the UE determines that transmission of small data is to be performed by the UE to a base station. The UE is in an inactive state out of a connected state, an idle state and the inactive state. A transmitter of the UE performs transmission of the small data. The processor determines whether to transmit a preferred-UE-state indication to the base station, wherein the preferred-UE-state indication indicates the connected state to be the preferred UE-state of the UE. The determination whether to transmit the preferred-UE-state indication indicating a connected state is based on a characteristic relating to the small data. The transmitter, when the processor determines to transmit the preferred-UE-state indication, performs the transmission of the small data with the preferred-UE-state indication to the base station.

Abstract: The present disclosure relates to a radio base station serving a user equipment in a first radio cell of a mobile communication system. The radio base station comprises processing circuitry which determines that a neighbor radio base station does not provide a beamformed reference signal to the user equipment. The neighbor radio base station controls the transmission in its neighbor radio cell of an omni-directional reference signal and the beamformed reference signal. A transmitter transmits a reference signal request to the neighbor radio base station. The reference signal request requests the neighbor radio base station to provide the beamformed reference signal to the user equipment. A receiver receives from the neighbor radio base station a reference signal request response, including information on the transmission of the requested beamformed reference signal. The transmitter transmits a notification to the user equipment, comprising information on the requested beamformed reference signal.

Abstract: The present disclosure relates to a user equipment (UE), comprising the following. A receiver receives a UE identification from a serving base station (BS). The UE is in an inactive state. The UE identification is usable by the UE to perform a monitoring function for reception of resource assignments, at least including uplink resource assignments. The receiver receives an uplink resource assignment transmitted from the serving BS, based on the UE identification, assigning radio resources for the transmission of small data. A transmitter performs transmission of the small data to the serving BS, based on the received uplink resource assignment. A processor determines whether to extend the monitoring function for reception of at least another uplink resource assignment based on the UE identification, wherein the determination is based on a message received from the serving BS or based on whether the UE has further small data available for transmission.

Abstract: The present disclosure relates to a transceiver device, comprising circuitry, which in operation, determined that a transmission of small data is to be performed by the transceiver device to a scheduling device. The transceiver device is in an inactive state out of a connected state, an idle state and the inactive state. The circuitry, in operation, obtains a characteristic relating to the small data. The transceiver device further comprises a transceiver, which in operation, performs the transmission of the small data and a characteristic indicator indicating the characteristic relating to the small data to the scheduling device.

Abstract: The present disclosure relates to a user device, a base station, and data transmission and reception methods to be performed by a user device and a base station in a communications system. The user device comprises circuitry which, in operation, receives paging occasion configuration from the base station, including at least one parameter for configuring a predefined time-domain pattern for receiving paging occasion within a paging cycle; and performs reception of paging signal in the paging occasions within the predefined time-domain pattern configured according to the received paging occasion configuration.

Abstract: The present disclosure relates to a mobile terminal and base station and respective operation methods. The mobile terminal comprises circuitry, which in operation, determines a condition for requesting on-demand a transmission of other system information; performs a random access procedure; and receives via broadcast a system information message including the on-demand requested other system information. The system information request message of the random access procedure includes an information element with a bit-pattern conforming to a specific format with at least a part of the bit-pattern for requesting the other system information. And the contention resolution message of the random access procedure includes the same, or the same part of the bit-pattern for detecting collisions during the random access procedure.

Abstract: The present disclosure relates to a radio base station serving a user equipment in a first radio cell of a mobile communication system. The radio base station comprises processing circuitry which determines that a neighbor radio base station does not provide a beamformed reference signal to the user equipment. The neighbor radio base station controls the transmission in its neighbor radio cell of an omni-directional reference signal and the beamformed reference signal. A transmitter transmits a reference signal request to the neighbor radio base station. The reference signal request requests the neighbor radio base station to provide the beamformed reference signal to the user equipment. A receiver receives from the neighbor radio base station a reference signal request response, including information on the transmission of the requested beamformed reference signal. The transmitter transmits a notification to the user equipment, comprising information on the requested beamformed reference signal.

Abstract: The present disclosure provides a transceiver device, comprising circuitry which, in operation, determines a current geographic cell using a current geographic position of the transceiver device and a mapping relation between geographic locations and geographic cells; and a transceiver which, in operation, transmits, in a registration request message, a current identifier indicating the current geographic cell, and receives, in a registration accept message, a plurality of first identifiers indicating a plurality of first geographic cells.

Abstract: The present disclosure relates to a user equipment comprising a receiver receiving a minimum-system-information message from a first radio base station. System information for the first radio cell that can be acquired by the UE is carried within the minimum-SI message and one or more additional-SI messages. The minimum-SI message includes system information for accessing the first radio cell and at least one system information index, each of which is associated with one of the additional-SI messages. The SI message index comprises a value tag and an area pointer, the latter pointing to one area already defined. Processing circuitry determines whether the UE had already acquired before the additional-SI message associated with the same value tag and the same area. If the determination is positive, the processing circuitry determines that system information included in said additional-SI message acquired before is applicable to the first radio cell.

Abstract: The present disclosure relates to a user device, a base station, and data transmission and reception methods to be performed by a user device and a base station in a communications system. The user device comprises circuitry which, in operation, receives paging occasion configuration from the base station, including at least one parameter for configuring a predefined time-domain pattern for receiving paging occasion within a paging cycle; and performs reception of paging signal in the paging occasions within the predefined time-domain pattern configured according to the received paging occasion configuration.

Abstract: The present disclosure relates to a user equipment (UE) which receives, from a base station via an unlicensed radio cell, uplink configuration information to configure at least one set of radio resources of the unlicensed radio cell available for transmitting uplink control information, the radio resource set being associated with a UE group ID indicating a UE group to which the UE is associated. The UE receives, from the base station, downlink control information, DCI, indicating a UE group ID. The UE, when determining that the associated UE group ID is the same as the UE group ID indicated by the DCI, determines scheduling request radio resources within the at least one set of uplink control information radio resources based on the received downlink control information. The UE transmits a scheduling request to the base station using the determined scheduling request radio resources.