Abstract: A base station broadcasts information to machine type communication (MTC) devices in the coverage area of the base station using multiple transmissions with layered modulation. Each transmission includes a different sequence of bits representing the information. A MTC device receiving the signals for the transmissions at a sufficiently high quality can recover the information by using a high modulation order on one of the transmissions. A MTC device receiving the signals of the transmissions at less than the sufficient quality can receive the information by applying a lower modulation order to multiple transmissions.

Abstract: An origination device (e.g., a base station) dual encodes a first set of data (1) according to a first set of encoding parameters corresponding to channel conditions associated with a first communication link, and (2) according to a second set of encoding parameters corresponding to channel conditions associated with a second communication link. The dual-encoded first set of data is transmitted to a signal forwarding device. The signal forwarding device decodes the dual-encoded first set of data, using decoding parameters that correspond to the second set of encoding parameters, to generate a single-encoded first set of data that is encoded according to the first set of encoding parameters. The signal forwarding device transmits a “single-encoded forwarded signal” to the destination device. The destination device decodes the single-encoded forwarded signal using decoding parameters that correspond to the first set of encoding parameters, which yields the first set of data.

Abstract: An unmanned aerial vehicle (UAV) calculates an estimated uplink interference caused by the UAV at a neighboring cell based on a downlink signal received from the neighboring cell. Based on the estimated uplink interference, the UAV monitors downlink messages transmitted from the neighboring cell. If the uplink interference experienced by the neighboring cell exceeds an interference threshold, the neighboring cell transmits a downlink message, which includes an uplink interference indicator, to the UAV. Upon receipt of the uplink interference indicator, the UAV transmits a measurement report, including the uplink interference indicator, to the serving cell. In some cases, the serving cell transmits an interface availability message and a handover command to the UAV based at least partially on the measurement report. The serving cell may maintain a mobility history for the neighboring cell, which indicates a history of uplink interference problems and/or UAV handover availability for the neighboring cell.

Abstract: A first transceiver station broadcasts information to machine type communication (MTC) devices in the coverage area of the transceiver station using layered modulation where MTC devices receiving the broadcast above a signal quality threshold can recover the MTC information by applying a high modulation order. MTC devices receiving the broadcast below the quality threshold, recover a portion of the MTC information by applying a lower modulation order and recover the remaining portion of the MTC information transmitted from a second transceiver.

Abstract: A user equipment for a mobile communication system, includes: a receiver configured to receive a radio resource control (RRC) release message for transitioning the user equipment to a specific state, from a base station via a serving cell; and a controller configured to cause the user equipment to transition to the specific state in response to the reception of the RRC release message. The RRC release message includes: a radio access network (RAN) paging area identifier indicating a RAN paging area configured by the base station to the user equipment; and a public land mobile network (PLMN) identifier indicating a PLMN corresponding to the RAN paging area. The controller is configured to perform a process of transmitting a notification to a cell when the user equipment moves to the cell that does not belong to the RAN paging area after transitioning to the specific state.

Abstract: A user equipment, apparatus and method for a user equipment includes receiving, from a network, configuration information indicating whether transmission of a specific uplink signal is possible when the user equipment is in a specific state where an RRC connection of the user equipment is suspended. The specific uplink signal is an uplink signal that the user equipment can transmit when the user equipment is in an RRC connected state. A determination is made, based on the configuration information, whether to transmit the specific uplink signal when the user equipment is in the specific state.

Abstract: A neighbonng cell determines that uplink interference from an unmanned aerial vehicle (UAV) exceeds a first threshold at the neighboring cell. The neighboring cell transmits an uplink interference indicator to the UAV. In some examples, the UAV informs its serving cell of the uplink interference experienced by the neighboring cell. The serving cell can utilize information received from the UAV to make handover decisions or scheduling decisions for the UAV that caused the uplink interference. In other examples, the UAV can temporarily refrain from transmitting on at least some of its uplink resources or utilize different uplink resources for uplink data transmissions. In still other examples, the UAV can utilize downlink measurements to select which neighboring base station System Information Block messages should be monitored for an uplink interference indicator.

Abstract: A system and method for dynamically (re)configuring a service network based on profile information obtained from a Big Data Analytics platform. Received dynamic situation profiles relative to network states, subscriber states, etc. may be compared against corresponding characteristic situation profiles. If there is a similarity, a dynamic design change action may be effectuated for changing configuration of at least a part of the service network, e.g., a service chaining mechanism, operating to service user data flows of the subscribers.

Abstract: A user equipment, a method performed by user equipment, and a chipset provided in a user equipment each encompass receiving a paging message including an indication from a current serving cell of the user equipment, the indication triggering a frequency redistribution procedure in which the user equipment reselects a target cell belonging to a frequency different from a frequency of the current serving cell, to be used as a serving cell, and performing the frequency redistribution procedure in response to receiving the paging message including the indication.

Abstract: An unmanned aerial vehicle (UAV) receives a set of Random Access preambles, determines its UAV status, and selects a Random Access preamble from the set of Random Access preambles. In some cases, the set of Random Access preambles are allocated for use by UAVs and are common to a plurality of neighboring cells. The UAV transmits the selected Random Access preamble to multiple neighboring cells. One of the neighboring cells that received the selected Random Access preamble transmits a Random Access Response to the UAV. The UAV determines which cell sent the Random Access Response, reselects to the cell that sent the Random Access Response, and transmits a Radio Resource Control (RRC) Connection Establishment Request to the reselected cell. Upon completion of a Random Access Channel (RACH) procedure, the reselected cell becomes the serving cell for the UAV.

Abstract: A user equipment and apparatus receive from a base station, configuration information configuring the user equipment to provide assistance information indicating a preference of the user equipment to leave RRC connected state, and transmit to the base station, assistance information indicating that a preferred RRC state of the user equipment is an RRC state in which an RRC connection is suspended. A base station transmits to a user equipment, configuration information configuring the user equipment to provide assistance information indicating a preference of the user equipment to leave RRC connected state, and receives from the user equipment, assistance information indicating that a preferred RRC state of the user equipment is an RRC state in which an RRC connection is suspended.

Abstract: A base station (eNB) determines device-to-device (D2D) transmission parameters for signal transmission over a D2D communication link between a first user equipment (UE) device and a second UE device. The eNB instructs the first UE device to transmit a reference signal that is received by the second UE device. The second UE device reports D2D channel characteristic information indicative of the received reference signal. Based on the D2D channel characteristic information, the base station determines the D2D transmission parameters and provides the parameters to the first UE device.

Abstract: An unmanned aerial vehicle (UAV) user equipment (UE) device determines uplink transmission power based on a reduced power factor in response to receiving an interference indicator from a neighboring base station. The reduced power factor results in an uplink transmission power for an uplink signal that is less than the uplink transmission power based on a standard power factor.

Abstract: A base station causes a radio terminal to transition to a specific state. The specific state is a state in which signaling for the radio terminal is suppressed compare to an RRC connected state while a connection for the radio terminal is maintained between the base station and a core network. The base station transmits to an entity of the core network, an identifier identifying the radio terminal and a first RRC transition notification indicting that the radio terminal transitions from the RRC connected state to the specific state. The base station causes the radio terminal to transition from the specific state to the RRC connected state. The base station transmits to the entity, a second RRC transition notification indicting that the radio terminal transitions from the specific state to the RRC connected state.

Abstract: A handover control method is a method for performing a conditional handover of a user device from a source cell to a target cell, the source cell to which the user device connects. The handover control method comprises: receiving, by the user device from the source cell, a handover command including a list of candidate cells which are candidates for the target cell and a handover condition specified for each of the candidate cells in the list; and when a handover condition corresponding to a specific candidate cell in the list included in the received handover command is satisfied, performing a handover to the specific candidate cell in which the handover condition is satisfied.

Abstract: A user terminal according to an embodiment is capable of executing dual connectivity. The user terminal comprises: a controller configured to execute the dual connectivity in which a first base station configured to establish an RRC connection with the user terminal and a second base station configured to provide an additional radio resource are used; and a transmitter configured to preferentially transmit, if a radio link failure is detected between the user terminal and the first base station, to the second base station, an RRC reestablishment request for reestablishing the RRC connection.

Abstract: A user equipment, apparatus provided in a user equipment, and method are for receiving a Multicast Broadcast Service, and include receiving a system information block (SIB) from a current serving cell of the user equipment, and performing a cell reselection operation where a cell having a highest ranking determined based on a radio quality and an offset is selected as a serving cell of the user equipment from among a plurality of cells. In the cell reselection operation, a determination is made, based on the SIB, whether to use an infinite offset as the offset to be applied to a cell providing the Multicast Broadcast Service.

Abstract: A method according to one embodiment is a method executed by a relay apparatus configured to: connect to a first upper apparatus; and have a function of relaying communication between the first upper apparatus and a lower apparatus. The method includes: detecting a connection failure with the first upper apparatus after starting the relaying; transmitting a reconnection request to a second upper apparatus which is a candidate of a reconnection destination of the relay apparatus in response to detection of the connection failure; receiving, from the second upper apparatus, in response to transmission of the reconnection request, a radio resource control, RRC, setup message indicating that not the reconnection but an RRC connection establishment has to be performed; and transmitting, to the second upper apparatus, information on behavior of the relay apparatus in response to reception of the RRC setup message.

Abstract: A relay radio terminal according to a first aspect performs a process for relaying communication between a base station and a remote radio terminal in a mobile communication system. In a state in which the relay radio terminal is in an idle mode and an end-to-end radio link between the relay radio terminal and the remote radio terminal is established, the controller is configured to perform a process of receiving, from the base station, a paging message including an identifier of the remote radio terminal as a call destination in a paging reception opportunity of the relay radio terminal, and a process of determining whether not only the remote radio terminal but also the relay radio terminal is called, in response to reception of the paging message.

Abstract: A radio terminal according to an embodiment is used in a mobile communication system. The radio terminal includes a controller configured to, if the radio terminal is in an RRC connected state, perform a predetermined function according to configuration parameters configured from a network. The controller is configured to invalidate at least a part of the configuration parameters in response to the transition of the radio terminal from the RRC connected state to a specific state. The specific state is a state in which signaling is reduced as compared with the RRC connected state and context information of the radio terminal is maintained in the network.