Abstract: A communication control method includes: a step A of receiving, by UE 100-1 in a coverage of the mobile communication system, broadcast information transmitted from eNB 200; a step B of transferring, by the UE 100-1, the broadcast information to UE 100-2 outside the coverage of the mobile communication system; and a step C of receiving, by the UE 100-2, the broadcast information transferred from the UE 100-1.

Abstract: A user equipment supports MBMS (Multimedia Broadcast Multicast Service) transmission using SC-PTM (Single Cell Point-To-Multipoint). The user equipment receives an MBMS service from a base station via SC-MTCH (Single Cell Multicast Traffic Channel). The user equipment receives, from the base station, MAC (Medium Access Control) CE (Control Element) indicating a suspension of transmission of the MBMS service via the SC-MTCH. The user equipment determines that the transmission of the MBMS service via the SC-MTCH is suspended in response to the reception of the MAC CE.

Abstract: A radio terminal according to one embodiment is a radio terminal for a mobile communication system supporting MBMS. The radio terminal comprises a receiver configured to receive level information from a base station; and a controller configured to perform a process of receiving an MBMS signal from the base station, based on the level information. The MBMS signal is transmitted from the base station using an enhanced coverage function for enhancing a coverage of the base station. The level information is information on an enhanced coverage level corresponding to the MBMS signal.

Abstract: A communication method according to one embodiment is a communication method in which a first radio terminal executes a layer 2 relay in which a packet of a second radio terminal is transmitted between the second radio terminal and a base station in a layer higher than a Radio Link Control (RLC) layer in Layer 2. The first radio terminal transmits information indicating that the first radio terminal is capable of executing the layer 2 relay. The second radio terminal transmits a request for the layer 2 relay to the first radio terminal in response to receiving the information.

Abstract: A user terminal is used in a mobile communication system configured to support Device to Device (D2D) communication that is direct device-to-device communication. The user terminal comprises a controller. The controller is configured to, if determining to execute a D2D discovery procedure targeted to a user terminal out of a cell coverage, execute the D2D discovery procedure by using a D2D data resource in a pre-configured resource pool for D2D communication. The controller is configured to execute, upon executing the D2D discovery procedure, a process of transmitting identification information indicating that data carried by the D2D data resource is used for the D2D discovery procedure.

Abstract: A communication method according to an embodiment, comprising: transmitting, from a base station to a radio terminal, a list indicating association between an identification of a logical channel group and a priority; generating, by the radio terminal, a buffer status report for direct communication; and transmitting, from the radio terminal to the base station, the buffer status report. The buffer status report includes an index of an destination identifier, an identifier of the logical channel group, and a buffer amount associated with the identifier of the logical channel group. In the generating the buffer status report, the radio terminal generates the buffer status report based on the list.

Abstract: A base station according to a first aspect is used in a mobile communication system supporting a D2D proximity service which enables direct device to device communication. The base station comprises: a controller that determines whether to allow a user terminal to execute transmission/reception operations of a D2D synchronization signal to directly establish device to device synchronization; and a transmitter configured to transmit information indicating results of the determination to the user terminal. The controller performs the determination based on D2D range information indicating a permissible communication range of the user terminal in the D2D proximity service.

Abstract: A communication device according to an embodiment comprises: a controller configured to perform radio communication with another communication device in a mobile communication system to which an MDT function is applied. The controller obtains an MDT measurement result obtained by measuring a parameter in the radio communication. The parameter is a parameter affected by a latency reduction function. The controller adds, to the MDT measurement result, identification information on whether or not the latency reduction function is applied, depending on whether or not the latency reduction function is applied to the radio communication.

Abstract: In a communication control method according to a present embodiment, at least one radio terminal of a first radio terminal and a second radio terminal discoveries the other radio terminal by executing a discovery for discovering a proximal terminal. The at least one radio terminal reports, to a network apparatus that the other radio terminal is discovered. The network apparatus requests, while the first radio terminal is located within a coverage of a cell, at least one of the first radio terminal and the second radio terminal to make a preparation for executing a relay by the second radio terminal by utilizing a proximal service.

Abstract: A user equipment as a pedestrian user equipment (UE) performs P2X communication that is a direct inter-terminal communication with another user equipment. The user equipment receives a message including a resource pool from a base station. When the user equipment is in a radio resource control (RRC) idle state, determines whether or not the message include a resource pool for the P2X communication. In accordance with a determination that the message does not include the resource pool for the P2X communication, transitions from the RRC idle state to an RRC connected state for requesting a radio resource for the P2X communication to the base station.

Abstract: A mobile communication method for performing predetermined communication between a base station and a user terminal by using a narrow band including 6 resource blocks comprises: transmitting, from the base station to the user terminal, narrow band allocation information allocating a predetermined number of the narrow bands to the user terminal as allocation information of the narrow band used for the predetermined communication; performing by the user terminal, the predetermined communication by using the predetermined number of narrow bands based on the narrow band allocation information; transmitting, from the base station to the user terminal, an RRC message including information specifying a bandwidth supportable by the user terminal; and changing, by the base station, a number of bits of the narrow band allocation information according to the bandwidth supportable by the user terminal. The predetermined number of narrow bands are provided within a bandwidth supportable by the user terminal.

Abstract: A radio terminal according to one embodiment is configured to perform a relay between another radio terminal and a network. The radio terminal comprises: a transmitter configured to notify the network of first information indicating that the radio terminal is a relay terminal of the another radio terminal; a controller configured to forward data addressed to the another radio terminal to the another radio terminal via a connection between the another radio terminal through the radio terminal and the network; and a receiver configured to receive from the network a message indicating that the data addressed to the another radio terminal exists when at least part of the connection is released. The controller is configured to start control for establishing the connection in order to forward the data addressed to the another radio terminal in response to receiving the message.

Abstract: A radio terminal according to one embodiment is used in a mobile communication system. The radio terminal comprises a controller configured to perform control related to a DRX operation for intermittently monitoring a downlink control channel based on a comparison result of a value related to a moving speed of the radio terminal and a threshold value when the extended DRX operation is set from a network.

Abstract: A communication control method is a method for performing offload to transfer a traffic load of a cellular base station to an access point. The communication control method comprises a step of maintaining without releasing the first connection, by a user terminal that have established a first connection with the cellular base station, even when the offload is started after establishing a second connection with the access point; and a determining step of determining, by the user terminal, whether the offload is continued or canceled after the offload is started.

Abstract: A receiving terminal includes: a receiver configured to receive a data unit configured by data and a header, from the transmitting terminal in the D2D communication; and a controller configured to hold the data unit including a compressed header for a predetermined period even if decoding the compressed header is failed when the compressed header is used as the header. In the D2D communication, a timing at which a receiving entity is formed in the receiving terminal differs from a timing at which a transmitting entity is formed in the transmitting terminal.

Abstract: A base station and method thereof includes transmitting from the base station to a user equipment, parameters for an offload from the cellular RAN to a wireless local area network (LAN). The parameters are used by the user equipment to perform an access network selection between the cellular RAN and the wireless LAN, and include a first threshold for comparison with a cellular signal strength of the cellular RAN, a second threshold for comparison with a wireless LAN signal strength of the wireless LAN, and a third threshold for comparison with a load of the wireless LAN. When performing access network selection, the parameters may cause the user equipment to perform the offload, in response to the cellular signal strength being lower than the first threshold, the wireless LAN signal strength being higher than the second threshold, and the load of the wireless LAN being lower than the third threshold.

Abstract: An industrial vehicle management system includes: a receiving unit that acquires operational information specifying a position and an operational state of each of a plurality of industrial vehicles; a symbol combining unit that, based on the operational information received by the receiving unit, superimposes and combines upon a map symbols showing the position of each of the industrial vehicles; a display control unit that displays upon a display device a map image that has been superimposed and combined by the symbol combining unit; and a symbol processing unit that changes display formats of the symbols according to the operational state.

Abstract: A communication device according to one embodiment includes a controller and a transmitter. The controller is configured to identify a zone that is a geographical section where the communication device is located, and select a predetermined transmission resource region from a plurality of transmission resource regions included in one transmission resource pool associated with the identified zone. The transmitter is configured to transmit a direct radio signal to another communication device by using a resource in the predetermined transmission resource region.

Abstract: A communication control method according to a present embodiment comprises: a step of transmitting, by a first base station, to a third base station that is a neighboring base station of the first base station, a first resource message relating to a first D2D resource used for the D2D proximity service in the first base station. The first resource message includes information on the first D2D resource and a second D2D resource used for the D2D proximity service in a second base station that is a neighboring base station of the first base station.

Abstract: In the communication control method according to the present embodiment, a user terminal transmits a scheduling assignment indicating the location of a radio resource used in a reception of communication data by direct device-to-device communication. The user terminal transmits the communication data including initial transmission data and retransmission data by using the radio resource. The retransmission data is transmitted depending on the number of times of re-transmissions associated with a predetermined scheduling assignment by using a predetermined radio resource of which the location is indicated by the predetermined scheduling assignment.