Abstract:
A base station and a user equipment of a wireless communication system are disclosed. Each of the base station and the user equipment of the wireless communication includes a communication module; and a processor. The processor is configured to receive signaling information related to the start of uplink (UL) transmission from the base station through the communication module. The processor is configured to determine whether to perform a UL transmission using a partial subframe based on the signaling information. When the processor performs the UL transmission using the partial subframe, the processor is configured to determine a symbol configuration of the partial subframe based on the signaling information and perform, through the communication module, the UL transmission using the partial subframe according to the symbol configuration. At this time, the partial subframe is a subframe which occupies less than 14 symbols.
Abstract:
A method, a device, and a system for transmitting a downlink signal is provided. The method includes monitoring a first common control channel indicating a downlink (DL) interval of subframe (SF) #(n−1) and SF #n, monitoring a second common control channel indicating a DL interval of SF #n and SF #(n+1), and performing a DL reception process in the SF #n based on a detection result of the first common control channel and a detection result of second common control channel. The DL interval represents occupied OFDM symbols in a DL subframe.
Abstract:
A method, device, and system for receiving a downlink signal is provided. The method includes: detecting a Channel State Information Reference Signal (CSI-RS) in a time unit #n on an unlicensed band cell; verifying whether the CSI-RS is used for Discovery RS (DRS) using an initialization value of a CSI-RS sequence of the CSI-RS; and performing a Radio Resource Management (RRM) measurement when the CSI-RS is used for the DRS. The CSI-RS is used for the DRS when an index of the time unit #n is not used for the initialization value of the CSI-RS sequence
Abstract:
A base station of a wireless communication system is disclosed. The base station comprise a communication module; and a processor. The processor is configured to transmit a radio frame divided into a plurality of subframes by using the communication module, wherein a duration of each of the plurality of subframes is 1 ms. When the base station transmits a partial subframe having a duration shorter than the duration of each of the plurality of subframes, the processor starts to transmit a control channel for scheduling data transmitted through the partial subframe at a symbol position for transmitting a reference signal.
Abstract:
Disclosed are a method, an apparatus, and a system for adjusting a contention window size for performing channel access. In detail, the method includes: receiving a plurality of hybrid automatic repeat request acknowledgement (HARQ-ACK) responses for downlink channel(s) of the specific cell; generating a random number N (N≧0) in a contention window size; and performing the downlink transmission in the specific cell after standing by for N slots while the specific cell is idle, wherein when a ratio of negative acknowledgement (NACK) among the plurality of HARQ-ACK responses is equal to or more than a reference value, the contention window size becomes larger than a previous value, and when the ratio of the NACK among the plurality of HARQ-ACK responses is less than the reference value, the contention window size is reset to a minimum value.
Abstract:
A base station of a wireless communication system is disclosed. The base station of wireless communication includes a communication module and a processor. The processor is configured to receive a grant for scheduling a plurality of uplink transmissions from the base station, and when the UE attempts to a first fixed duration-based channel access for a first transmission which is one of the plurality of uplink transmission and fails in the first fixed duration-based channel access, attempt to a second fixed duration-based channel access for a second transmission which is a transmission following the first transmission.
Abstract:
In a method for transmitting and receiving a shared channel in a wireless communication system, the method performed by a terminal is characterized by comprising: a step for receiving, from a base station, first resource information for transmitting and receiving a shared channel; and a step for receiving, from the base station, the shared channel on a first resource determined on the basis of the first resource information or transmitting, to the base station, the shared channel on the first resource.
Abstract:
Disclosed is a base station of a wireless communication system. Each base station for wireless communication comprises: a communication module; and a processor. The processor can receive signaling about a bandwidth part (BWP) from the base station, determine, on the basis of the signaling, an activated BWP among one or more BWPs set in an unlicensed band, and monitor a physical downlink control channel (PDCCH) in the activated BWP.
Abstract:
Provided is a method for transmitting, by a terminal, a PUSCH to a base station in a wireless communication system. The method comprises: a step for receiving, from a base station, an RRC signal including configuration information on a semi-static uplink symbol, a flexible symbol, and a downlink symbol; a step for receiving a PDCCH for scheduling a PUSCH transmission including at least one PUSCH repetition; a step for determining whether at least one of the required number of symbols for transmitting the PUSCH repetition cannot transmit the PUSCH repetition; and a step for transmitting the PUSCH repetition to the base station on the basis of the determination on whether the PUSCH repetition cannot be transmitted. When the PUSCH repetition cannot be transmitted, at least one of the symbols is a symbol designated as a semi-static downlink symbol by the configuration information.
Abstract:
The present invention relates to a method used in a wireless communication system and an apparatus therefor, comprising the steps of: transmitting an uplink channel on a slot set; and transmitting a DMRS for transmission of the uplink channel on the slot set, wherein the DMRS is transmitted to maintain phase continuity and power consistency over a plurality of consecutive slots in a time window, and, when the length of the time window is not configured by a base station, the time window is determined according to the proposal of the present invention.