Abstract: Disclosed herein is a method for time-division transmission of heterogeneous physical-layer signals. The method may include setting time-division-related information and alternately transmitting heterogeneous physical-layer signals to a terminal over the same frequency resource based on the time-division-related information.

Abstract: A method of a base station may comprise: transmitting, to a terminal, a higher layer message including a first table mapping between cell groups and indicators each indicating the cell groups; transmitting, to the terminal, multi-cell scheduling control information; transmitting, to the terminal, data through multiple cells based on the higher layer message and the multi-cell scheduling control information; and receiving, from the terminal, a response message for the data transmitted through the multiple cells based on the multi-cell scheduling control information, wherein the multi-cell scheduling control information includes first information indicating one cell group at least among the cell groups and uplink resource allocation information.

Abstract: Disclosed herein is a method for signal configuration. The method may include evenly dividing, by a signal-bit configuration block, data or information forming signal bits or a signal bitstring and transferring the same to N multiple channels; mapping, by a first spatial path configuration block, a coded bitstring, which is generated through coding and signal processing of the data or information forming the signal bits or the signal bitstring, to cells corresponding to M antennas; and configuring, by a frequency path configuration block, the transmission paths of the cells.

Abstract: Provided is a method and apparatus for determining an operating condition for frequency coexistence and an operating condition determining method includes a method of calculating and transferring an inference-free available frequency and an output level to an existing radio station that operates and needs to be protected or a method of calculating a channel access parameter for sharing a frequency with a heterogeneous device, a network, or a system.

Abstract: Disclosed herein is a method for transmitting, by a terminal, a sounding reference signal (SRS). The terminal receives a grant for uplink multiple subframes from a base station. The terminal determines a first subframe for an SRS transmission of the terminal among the uplink multiple subframes on the basis of SRS transmission position information received from the base station. Further, the terminal transmits the SRS in the first subframe.

Abstract: Disclosed herein is a method for transmitting, by a terminal, a sounding reference signal (SRS). The terminal receives a grant for uplink multiple subframes from a base station. The terminal determines a first subframe for an SRS transmission of the terminal among the uplink multiple subframes on the basis of SRS transmission position information received from the base station. Further, the terminal transmits the SRS in the first subframe.

Abstract: A method of generating shared information includes determining an attenuation effect on transmission power of a new radio station due to a reception mask of an existing radio station, calculating an interference effect of the existing radio station due to the new radio station using the attenuation effect, determining a protection domain of the existing radio station according to the interference effect, and generating shared information to be used by the new radio station based on the protection domain, wherein the protection domain is a domain in which a frequency available to the new radio station is restricted.

Abstract: Provided is a method and apparatus for determining an operating condition for frequency coexistence and an operating condition determining method includes a method of calculating and transferring an inference-free available frequency and an output level to an existing radio station that operates and needs to be protected or a method of calculating a channel access parameter for sharing a frequency with a heterogeneous device, a network, or a system.

Abstract: A method for transmitting an uplink signal in an unlicensed band by a terminal is provided. The terminal receives first scheduling information that schedules one or more uplink subframes, from a base station in a first downlink subframe. The terminal receives second scheduling information that determines a transmission time point of the uplink signal, from the base station in a second downlink subframe after the first downlink subframe. The terminal transmits the uplink signal in a first uplink subframe corresponding to the transmission time point among the one or more uplink subframes.

Abstract: A method of generating shared information includes determining an attenuation effect on transmission power of a new radio station due to a reception mask of an existing radio station, calculating an interference effect of the existing radio station due to the new radio station using the attenuation effect, determining a protection domain of the existing radio station according to the interference effect, and generating shared information to be used by the new radio station based on the protection domain, wherein the protection domain is a domain in which a frequency available to the new radio station is restricted.

Abstract: An apparatus for analyzing a frequency use status may obtain a candidate radio network temporary identifier (RNTI) using downlink control information (DCI), estimate an active RNTI from the candidate RNTI, and analyze a frequency use status using the active RNTI.

Abstract: Disclosed is a method for scheduling an uplink transmission in a communication network. A terminal operation method comprises the steps of: detecting a control channel of a subframe #n transmitted from a base station; receiving an uplink grant from the control channel; and transmitting, to the base station, a plurality of subframes scheduled by the uplink grant. Thus, the performance of the communication network may be improved.

Abstract: Disclosed herein is a method for transmitting, by a terminal, a sounding reference signal (SRS). The terminal receives a grant for uplink multiple subframes from a base station. The terminal determines a first subframe for an SRS transmission of the terminal among the uplink multiple subframes on the basis of SRS transmission position information received from the base station. Further, the terminal transmits the SRS in the first subframe.

Abstract: A resource usage measuring method and an apparatus performing the same. The resource usage measuring method includes measuring a resource usage in a frequency domain based on a demodulation reference signal (DM-RS) transmitted from a base station, and measuring a resource usage in a time domain based on the DM-RS.

Abstract: The present invention relates to a method for transmitting uplink data in a spectrum sharing wireless communication system wherein, in order to enhance uplink transmission efficiency in an LTE-U service, clear channel assessment (CCA) is performed on a user terminal so as to consider the hidden node problem, and channel occupation based on an uplink signal of another terminal is considered, wherein applied are: a method for generating and transmitting a random backoff counter value at a base station so that all terminals can equally use a channel connection parameter needed for transmitting an uplink subframe in an unlicensed band; and a downlink controlling method for scheduling an uplink multi-subframe.

Abstract: Disclosed herein is a method for transmitting, by a terminal, a sounding reference signal (SRS). The terminal receives a grant for uplink multiple subframes from a base station. The terminal determines a first subframe for an SRS transmission of the terminal among the uplink multiple subframes on the basis of SRS transmission position information received from the base station. Further, the terminal transmits the SRS in the first subframe.

Abstract: Disclosed is a method for communicating in a network supporting licensed and unlicensed bands. A terminal operation method comprises the steps of: detecting a control channel of a subframe #n transmitted from a base station; obtaining, from the control channel, a DCI for an uplink grant; executing channel sensing on the basis of channel connection-related information included in the DCI; and transmitting, to the base station, a subframe #(n+1) if the result of executing channel sensing is an idle state. Thus, the performance of the communication network may be improved.

Abstract: Disclosed are operation methods of a communication node in a network supporting licensed and unlicensed bands. An operation method of a user equipment (UE) may comprises receiving, from a base station, a physical downlink control channel (PDCCH) including downlink control information (DCI) in a subframe n?1 of an unlicensed band; decoding the DCI using a common radio network temporary identifier (RNTI); and identifying the number of symbols of the subframe n?1 or a subframe n based on the decoded DCI. Therefore, a performance of the network can be enhanced.

Abstract: The present invention relates to a device and method for allocating a coexistence resource in an unlicensed band. The device according to the present invention comprises: a frame configuration unit for configuring a subframe in which data and a reference signal for a channel in an unlicensed band are allocated, and allocating a part of the symbols of the subframe as a coexistence resource; a signal detection unit for detecting a signal of another LTE system or Wi-Fi system during a transmission idle period where the coexistence resource is allocated; and a transmission processing unit which, when the signal of another system is detected during the transmission idle period, does not occupy a resource for the next subframe, and when the occupation of the coexistence resource by the another system has ended, occupies the resource for the next subframe.

Abstract: An operating method of a communication node in a network supporting licensed and unlicensed bands is disclosed. An operation method of a base station comprises the steps of: transmitting a PDSCH to a UE in an unlicensed band; receiving an HARQ response to the PDSCH from the UE; and determining a size of a CW on the basis of a proportion of NACKs in HARQ responses. Therefore, a performance of a communication network can be improved.