Abstract: Disclosed is a scheduling method for a communication network supporting an unlicensed band. An operation method of a user equipment (UE) may comprise obtaining a control channel from a partial subframe having a length of less than 1 millisecond in an unlicensed band; obtaining scheduling information from the control channel; and obtaining a data channel indicated by the scheduling information from the partial subframe. Therefore, performance of the communication network can be enhanced.

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 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: 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 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: A communication node configures an unlicensed band transmission burst including a plurality of subframes in consideration of an occupancy state of a channel of an unlicensed band and transmits the unlicensed band transmission burst through the unlicensed band. In this case, at least one subframe of the plurality of subframes has a different type from the remaining subframes.

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.

Abstract: Disclosed herein are an apparatus and method for measuring a broadband Passive Intermodulation Distortion (PIMD) signal. The apparatus for measuring a broadband PIMD signal includes a Radio Frequency (RF) processing unit for combining one or more transmission signals into a single output signal and transmitting the output signal to a feeder so as to measure a PIMD signal and for generating a beat frequency signal using the PIMD signal received from the feeder, and a digital processing unit for transferring a control signal required so as to control the RF processing unit, receiving the beat frequency signal, and then measuring a location of a passive element in the feeder in which the PIMD signal has been generated by performing digital signal processing on the beat frequency signal.

Abstract: A scheduling method for a communication network supporting an unlicensed band is disclosed. An operation method of UE comprises the steps of: receiving, from a base station, an unlicensed band burst including a plurality of subframes in an unlicensed band; acquiring control information from the unlicensed band burst; and acquiring data from the unlicensed band burst on the basis of the control information. Therefore, the performance of the communication network can be improved.

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: 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: A method and an apparatus for transmitting and receiving a signal in a communication network are disclosed. A method for operating UE supporting an unlicensed band comprises the steps of: receiving from a base station DMTC-related information including DMTC cycle and DMTC offset; checking DMTC section to which DRS is transmitted based on the DMTC-related information; and receiving from the base station the DRS using sub-frames apart from a sub-frame corresponding to the DRS cycle within the DMTC section. As a result, the performance of a communication network can be improved.

Abstract: The present disclosure provides apparatuses or methods for detecting a PIM generation point, which can enhance the accuracy of the PIM generation point detection up to a level of 10 centimeters, and thus enable rapid replacement or maintenance of a disfunctional element causing the PIM by installing and controlling a time delay module in an output end of a reference signal (or, a PIM signal) for detection of the PIM generation point.

Abstract: Disclosed are a method for generating a pilot pattern and an apparatus thereof. The method for generating a pilot pattern for MIMO antennas includes: determining a size of a slot that is an interval where a pilot pattern is repeated in a time domain and a frequency domain; determining a pilot inserting position of OFDMA symbols included in a slot determined for a first antenna; and determining a pilot inserting position of OFDMA symbols included in a slot determined for a second antenna, in order to have a sub-carrier different from a sub-carrier of the pilot inserting position of the OFDMA symbols included in the slot determined for the first antenna.

Abstract: A wireless device of a communication system randomly selects a backoff counter at a contention window interval corresponding to a contention window size that is determined according to a backoff stage, attempts packet transmission, when the backoff counter becomes 0 while reducing the backoff counter, when a radio channel is in an idle status, and increases the contention window size while increasing the backoff stage by 1 according to a first predetermined condition. In this case, as the backoff stage increases, a contention window size has a concave down increasing form.

Abstract: Provided is a PIM detection apparatus including: a tone signal input unit configured to apply a tone signal having a first frequency characteristic to a test target apparatus; a sequence signal input unit configured to apply a sequence signal having a second frequency characteristic to the test target apparatus; a PIM detector configured to receive a Passive Intermodulation (PIM) signal from the test target apparatus, and to detect a delay time and a size of the PIM signal based on the sequence signal; and a PIM position determiner configured to determine a PIM occurrence position by using the delay time and the size of the PIM signal.

Abstract: An exemplary embodiment of the present information discloses a base station which transmits a discovery reference signal (DRS) in an unlicensed band, including: a transmission control unit which sets different timings to transmit the DRS for each of a plurality of channels; and a communication unit which transmits the DRS to the outside through the plurality of channels based on the set timing.

Abstract: The present disclosure provides apparatuses or methods for detecting a PIM generation point, which can enhance the accuracy of the PIM generation point detection up to a level of 10 centimeters, and thus enable rapid replacement or maintenance of a disfunctional element causing the PIM by installing and controlling a time delay module in an output end of a reference signal (or, a PIM signal) for detection of the PIM generation point.

Abstract: A communication node configures an unlicensed band transmission burst including a plurality of subframes in consideration of an occupancy state of a channel of an unlicensed band and transmits the unlicensed band transmission burst through the unlicensed band. In this case, at least one subframe of the plurality of subframes has a different type from the remaining subframes.

Abstract: An operation method of a communication node supporting a licensed band and an unlicensed band is disclosed. As an exemplary embodiment according to the present disclosure, an operation method of a user equipment (UE) in a communication network may comprise measuring a received signal strength during a measurement period in an unlicensed band; determining a channel occupation status by comparing the measured received signal strength with a predetermined threshold; and reporting information indicating the channel occupation status to a base station. Therefore, performance of the communication network can be enhanced.