Abstract: The present invention relates to a way that a machine type communication module transmits/receives data, using a sleep mode or avoiding a busy time of a base station. That is, the present invention relates to an apparatus for scheduling in LTE machine type communication in which a machine type communication module transmits/receives data, using a sleep mode or avoiding a busy time of a base station for a response to an order or for a periodic report. The apparatus for scheduling in LTE machine type communication includes a machine type communication module that performs machine type communication with a base station.

Abstract: The present invention relates to a way of reporting a wireless channel state of a base station and a terminal. That is, the present invention relates to a system and a method for channel state information transmission on LTE dual connectivity which transmits reliable wireless data transmission by reporting wireless channel states of base stations and terminals. The system for channel state information transmission on LTE dual connectivity includes a terminal that allocates a radio resource to a terminal and performs data communication with the terminal and a sub-base station that performs data communication with the terminal simultaneously with the main base station.

Abstract: The present invention relates to a way of transmitting a cell specific reference signal to enable a terminal to reliably recognize a small cell base station. That is, the present invention relates to an apparatus for cell specific reference signal transmission on an LTE small cell which transmits a cell specific reference signal as a discovery signal and the apparatus includes a small cell base station that transmits a discovery reference signal to a terminal.

Abstract: The present invention relates to a way of transmitting a discovery signal to enable a terminal to reliably recognize a small cell base station. That is, the present invention relates to an apparatus for transmitting/receiving a discovery signal on an LTE small cell which efficiently sets a discovery signal of a small cell base station and the apparatus includes a small cell base station that transmits a discovery reference signal to a terminal.

Abstract: The present invention relates to a way that a machine type communication module transmits/receives data, using a sleep mode or avoiding a busy time of a base station. That is, the present invention relates to an apparatus for scheduling in LTE machine type communication in which a machine type communication module transmits/receives data, using a sleep mode or avoiding a busy time of a base station for a response to an order or for a periodic report. The apparatus for scheduling in LTE machine type communication includes a machine type communication module that performs machine type communication with a base station.

Abstract: The present invention relates to an apparatus for device to device synchronization signal transmission on LTE device to device communication. That is, the present invention relates to an apparatus for device to device synchronization signal transmission on LTE device to device communication which periodically or aperiodically transmits a synchronization signal to detect an interference with the other terminal. The apparatus for device to device synchronization signal transmission on LTE device to device communication uses any one of a periodic transmission scheme, an aperiodic transmission scheme, a continuous transmission scheme, a transmission stopping scheme so as to perform the device to device communication with the other terminal to determine a transmission policy on a device to device synchronization signal.

Abstract: The present invention relates to a way of performing time division duplex switching with large intervals. An apparatus for time division duplex switching in LTE machine type communication which performs switching using an element with a low switching speed includes a machine type communication module that performs machine type communication with a base station.

Abstract: The present invention relates to a way of transmitting states of a small cell operating in an on-state and an off-state. That is, the present invention relates to an apparatus for on-off information transmission on an LTE small cell which minimizes interference by receiving an on-state and an off-state of a small cell by means of a terminal and the apparatus includes a small cell base station that transmits a discovery reference signal to a terminal.

Abstract: The present invention relates to a method of resetting the schedule of a terminal when priority data transmission is requested in communication between the terminal and a base station. That is, the present invention relates to a system and a method for priority data transmission on LTE dual connectivity which improves reliability of the existing communication data in the terminal and performs priority data transmission simultaneously, in which the system for priority data transmission on LTE dual connectivity includes a main base station that allocates a radio resource to a terminal and performs data communication with the terminal, and a sub-base station that performs data communication with the terminal simultaneously with the main base station.

Abstract: The present invention relates to device-to-device communication that is performed in an efficient type that is used for device-to-device communication. That is, the present invention relates to an apparatus for transmission on LTE device-to-device communication which can perform device-to-device communication at a high speed with a bandwidth and a transmission type, in which interference can be minimized. The apparatus includes a first terminal that performs device-to-device communication by transmitting a synchronization signal for terminals and a discovery signal to a second terminal and receiving a response to the signals from the second terminal.

Abstract: The present invention relates to a system for reassembling a bearer in LTE dual connectivity, which inserts a bearer ID to a bearer separated by a terminal and reassembles it on the basis of the bearer ID in a base station. The system for reassembling a bearer in LTE dual connectivity includes: a main base station that performs first data transmission to a terminal; a sub-base station that performs second data transmission to the terminal simultaneously with the main base station; and the terminal that transmits transmission data to the main base station and the sub-base station, in which the terminal measures first data and second data from the main base station and the sub-base station and transmits transmission data with weight to the base station having better quality of data.

Abstract: Disclosed herein is a method for a terminal to effectively transmit a control signal when a macro cell base station that can be applied to a small cell cluster environment and a small cell base station simultaneously provide services in a heterogeneous network, and a method for reducing overhead of a control signal during connection of a plurality of LTE base stations, which can remarkably reduce the transmission frequency of control signals that are transmitted from a terminal to a small cell base station or can transmit the control signals all at once.

Abstract: Disclosed herein is a method for a terminal to effectively transmit a control signal when a macro cell base station that can be applied to a small cell cluster environment and a small cell base station simultaneously provide services in a heterogeneous network, and a method for reducing overhead of a control signal during connection of a plurality of LTE base stations, which can remarkably reduce the transmission frequency of control signals that are transmitted from a terminal to a small cell base station or can transmit the control signals all at once.

Abstract: Disclosed herein is a scheme for transmitting a handover message of a terminal when a macro cell base station that can be applied to a small cell cluster environment and a small cell base station simultaneously provide services in a heterogeneous network, and a method for transceiving a handover message through any one of the macro base station and the small cell base station.

Abstract: Disclosed herein is a method for avoiding small cell interference when a macro cell base station that can be applied to a small cell cluster environment and a small cell base station simultaneously provide services in a heterogeneous network, and a method for avoiding small cell interference during connection of a plurality of LTE base stations, which includes making wireless resource control messages of the small cell base station include small cell type information, position information, and strong interference indication information.

Abstract: A system and method for transmitting downlink data on LTE D2D communications are disclosed, which can efficiently use an existing channel of LTE without providing a separate channel for the D2D communications. The system for transmitting downlink data on LTE D2D communications includes a first base station configured to wirelessly provide a mobile communication service; and a first terminal configured to receive the mobile communication service from the first base station, wherein the first terminal performs D2D communications with at least one of a second terminal configured to wirelessly receive the mobile communication service from the first base station, a third terminal configured to receive the mobile communication service from a second base station that wirelessly provides a mobile communication service in a different area from the first base station, and a fourth terminal which does not receive the mobile communication service.

Abstract: A system and method for transmitting broadcasting data on LTE D2D communications are disclosed, which can efficiently use an existing channel of LTE without providing a separate channel for the D2D communications. The system for transmitting broadcasting data on LTE D2D communications includes a first base station configured to wirelessly provide a mobile communication service; and a first terminal configured to receive the mobile communication service from the first base station, wherein the first terminal performs D2D communications with at least one of a second terminal configured to wirelessly receive the mobile communication service from the first base station, a third terminal configured to receive the mobile communication service from a second base station that wirelessly provides a mobile communication service in a different area from the first base station, and a fourth terminal which does not receive the mobile communication service.

Abstract: A system and method for managing frequencies on LTE D2D communications are disclosed, which can efficiently use an existing channel of LTE without providing a separate channel for the D2D communications. The system for managing frequencies on LTE D2D communications includes a first base station configured to wirelessly provide a mobile communication service; and a first terminal configured to receive the mobile communication service from the first base station, wherein the first terminal performs D2D communications with at least one of a second terminal configured to wirelessly receive the mobile communication service from the first base station, a third terminal configured to receive the mobile communication service from a second base station that wirelessly provides a mobile communication service in a different area from the first base station, and a fourth terminal which does not receive the mobile communication service.

Abstract: A system and method for LTE D2D communications are disclosed, which can perform direct communications between terminals without using an LTE base station. The system for LTE D2D communications includes a first base station configured to wirelessly provide a mobile communication service, and a first terminal configured to receive the mobile communication service from the first base station, wherein the first terminal performs D2D communications with at least one of a second terminal configured to wirelessly receive the mobile communication service from the first base station, a third terminal configured to receive the mobile communication service from a second base station that wirelessly provides a mobile communication service in a different area from the first base station, and a fourth terminal which does not receive the mobile communication service.

Abstract: A system and method for D2D communications in LTE cellular coverage are disclosed, which can efficiently use the data communications between the D2D terminals without interference in the LTE base station coverage. The system for D2D communications in LTE cellular coverage includes a first base station configured to wirelessly provide a mobile communication service; and a first terminal configured to receive the mobile communication service from the first base station, wherein the first terminal performs D2D communications with at least one of a second terminal configured to wirelessly receive the mobile communication service from the first base station, a third terminal configured to receive the mobile communication service from a second base station that wirelessly provides a mobile communication service in a different area from the first base station, and a fourth terminal which does not receive the mobile communication service.