Abstract: The present invention relates to a method and a apparatus for transmitting and receiving, by a device, data in a wireless communication system. The present invention can provide a method and an apparatus which receive, from a first network node, configuration information of a contention-based resource region, the contention-based resource region indicating a resource region capable of transmitting and receiving data without connecting to the first network node; and transmit a preamble and a specific message in the contention-based resource region on the basis of the configuration information, wherein the configuration information comprises: region information indicating the contention-based resource region; a first resource information indicating a resource available in the contention-based resource region; and a second resource information indicating a resource unavailable in the contention-based resource region.

Abstract: Provided is a method of transmitting, by a first user equipment, uplink data in a wireless communication. The method includes transmitting a random access preamble to a base station through an optimal beam of the first user equipment, receiving a first random access response and a second random access response wherein the first random access response is received together with downlink data of a second user equipment through an optimal beam of the second user equipment at a first point of time and the second random access response is received together with downlink data of a third user equipment through an optimal beam of the third user equipment at a second point of time, decoding a message which is generated by combining the first random access response with the second random access response, and transmitting the uplink data to the base station based on scheduling information included in the message.

Abstract: The present invention relates to a method and apparatus for establishing a plurality of bearers for transmitting and receiving data in a wireless communication system. In accordance with an embodiment of the present invention, there is provided a method of establishing, by a base station, a plurality of bearers including establishing the plurality of bearers between a plurality of network nodes and the base station, receiving a specific message through a dedicated bearer from a user equipment, the specific message including message type information indicating a type of the specific message, and transmitting the specific message to one of the plurality of network nodes through one of the plurality of bearers based on the message type information.

Abstract: The present application provides a method for transmitting, by an eNodeB, control information to a user equipment including distributed antenna units and a central unit for controlling the distributed antenna units, in a wireless communication system. Particularly, the control information transmission method may comprise the steps of: transmitting distributed antenna unit-common control information which is scrambled by a first identifier; and transmitting distributed antenna unit-specific control information which is scrambled by a second identifier, wherein the first identifier is an identifier of the user equipment, and the second identifier is a predetermined value which is determined on the basis of the identifier of the user equipment and an index of each of the distributed antenna units.

Abstract: The present specification provides a method for transmitting and receiving uplink (UL) data and/or downlink (DL) data in a wireless communication system supporting a low latency service. The method for transmitting and receiving the downlink data is performed through slim downlink control information (DCI), and the method for transmitting and receiving uplink data is performed through a service management entity (SME).

Abstract: Provided are a method and a device for performing device-to-device communication by sharing an uplink resource and a sidelink resource in a wireless communication system. Particularly, a first terminal receives, from a base station, beam scanning signals and a first threshold value. The first terminal generates first reception beam information including beam information of a signal received at a signal intensity greater than or equal to the first threshold value, among the beam scanning signals. The first terminal receives second reception beam information from the base station. The second reception beam information includes beam information of a first uplink signal received by the base station from a second terminal. The first terminal transmits a sidelink signal through the sidelink resource by using a beam obtained by excluding a third reception beam from a first reception beam.

Abstract: According to the present invention, a first physical downlink control channel (PDCCH) and a second PDCCH can be transmitted to user equipment. A first physical downlink data channel (PDSCH) corresponding to the first PDCCH, and a second PDSCH corresponding to the second PDCCH can be transmitted to the user equipment. When the first PDSCH has a lower decoding priority than the second PDSCH, and the decoding timing of the first PDSCH and the decoding timing of the second PDSCH overlap, the user device may decode the second PDSCH and not the first PDSCH at the decoding timing, and transmit information with respect to the first PDSCH as first ACK/NACK information. As a reply to the first ACK/NACK information, a third PDCCH not having a corresponding PDSCH may be transmitted to the user equipment.

Abstract: The present description provides a method for transmitting and receiving uplink (UL) data in a wireless communication system. A method, which is carried out by means of a terminal, comprises the steps of: receiving a first uplink grant from a base station; transmitting, on the basis of the first uplink grant, first uplink data to the base station; receiving an HARQ response to the first uplink data from the base station; transmitting second uplink data to the base station by means of retransmission resources allocated for the retransmission of the first uplink data; and transmitting, to the base station, control information which indicates whether the second uplink data is retransmission data of the first uplink data or new data generated by means of a particular event.

Abstract: A method and apparatus for performing a downlink (DL) transmission using a short transmission time interval (TTI) is provided. A network performs a first DL transmission via a first set of subframes which are multicast-broadcast single-frequency network (MBSFN) subframes, and performs a second DL transmission via a second set of subframes using the short TTI. A length of the short TTI is less than 1 ms.

Abstract: The present invention relates to a method and apparatus for transmitting and receiving data in a wireless communication system supporting a low latency service. According to the present invention, a terminal transmits a request message for requesting transmission of data to provide the low latency service in an idle state to a base station, and in response to the request message, receives a response message including resource information related to transmission and reception of low latency service data from the base station, thereby when additional data is generated for providing the low latency service for transmitting and receiving the low latency service data, the additional resources may be extended to transmit the additional data.

Abstract: The present invention relates to a method and apparatus for transmitting and receiving data performed by a base station in a wireless communication system. According to the present invention may provide a method and apparatus for establishing a first session for transmitting and receiving data with a network node, receiving a message through the first session from a device or the network node, and transmitting the message to the device or the network node through the first session, and the first session indicates a logical path for transmitting one or more messages having different Quality of Services.

Abstract: Disclosed are a method for dividing a transport block of a low density parity check (LDPC) code and an apparatus therefor. A method for dividing a transport block of an LDPC code according to the present disclosure can improve the performance of the LDPC code by dividing the transport block using a minimum number of code blocks. In addition, it is possible to minimize shortening bits by making the size of some of the code blocks smaller than the size of the other code blocks. Further, it is possible to prevent performance degradation due to a minimum size code block by minimizing the number of the code blocks and performing shortening on a large size code block.

Abstract: A method and apparatus for performing a scheduling request for transmitting uplink data in a wireless communication system are provided. Specifically, a terminal receives allocation information for a first SR resource that is semi-statically allocated from a base station. The terminal receives allocation information for a second SR resource dynamically allocated from the base station. The second SR resource is additionally allocated in addition to the first SR resource for a buffer status report (BSR). At this time, the allocation information for the first SR resource comprises: mapping information between the first and second SR resources and buffer size information. The terminal transmits an SR to the base station through the first SR resource or the second SR resource.

Abstract: A method for performing encoding on the basis of a parity check matrix of a LDPC code, according to one embodiment of the present invention, comprises the steps of: generating, by a terminal, a parity check matrix, wherein the parity check matrix corresponds to a characteristic matrix, each element of the characteristic matrix corresponds to a shift index value determined by a modulo operation between a corresponding element in a base matrix and a lifting value, and the base matrix is a 46×68 matrix; and performing, by the terminal, encoding of input data by using the parity check matrix, wherein the lifting value is associated with the length of the input data.

Abstract: A method for a terminal performing transmission using a grant-free resource in a wireless communication system is a method for transmitting/receiving a signal associated with a grant-free resource, the method comprising the steps of: generating uplink control information (UCI); and transmitting at least one among the generated UCI and data, wherein the transmission of at least one among the UCI and the data is dropped or delayed according to a correlation between the time point at which the UCI was generated and the position of the grant-free resource on a time axis.

Abstract: A method for transmitting, by a terminal, an SRS in a wireless communication system comprises the steps of: receiving, from a base station, control information including SRS resource pool information for tracking a transmission beam of the terminal; and transmitting the SRS to the base station on the basis of the control information, wherein the SRS is an SRS used for tracking the transmission beam of the terminal.

Abstract: A method for transmitting and receiving data performed by an user equipment (UE) in a wireless communication system according to the present disclosure includes receiving a first message for informing that a radio link quality value of a first base station (BS) for a specific Mission Critical Service (MCS) is changed from the first BS; receiving a second message including second radio link quality information associated with a radio link quality value of a second BS from the at least one second BS; and maintaining the first BS or switching to one of the at least one second BS based on the received first radio link quality information and the second radio link quality information.

Abstract: The present description provides a method for transmitting uplink (UL) data in a wireless communication system. A method, which is carried out by means of a terminal, comprises the steps of: receiving, from a base station, control information related to transmission of low latency radio (LLR) service data; transmitting, on the basis of the received control information, the low latency radio service data to the base station through an urgent channel, wherein the control information comprises urgent channel information and/or urgent bearer information defined for transmission of the low latency radio service data.

Abstract: The present specification relates to a method for transceiving uplink data (UL data) in a wireless communication system, the method performed by a user equipment (UE) comprising: receiving a first uplink grant (UL grant) from a base station; transmitting a first item of uplink data (UL data) to the base station on the basis of the first uplink grant; receiving, from the base station, a HARQ response to the first item of uplink data; and transmitting a second item of uplink data (UL data) to the base station, wherein the method further comprises a step of transceiving, with the base station, indication information indicating whether the second item of uplink data is HARQ data or non-HARQ data.

Abstract: A method for transmitting and receiving a packet performed by a first network node in a wireless communication system according to the present disclosure includes receiving a first message in relation to a connection configuration of a specific flow from a user equipment (UE); receiving a second message in relation to a response to the first message from a second network node (e.g., MME/GW); checking whether the first flow ID and the second flow ID are identical; transmitting a UL grant to the UE by considering a processing time of the UE; and receiving a third message from the UE through the UL grant.