Abstract:
Disclosed are a transmission method and a base station comprising: user equipment confirming a handover to be performed; transmitting to a macro cell a data forwarding request message for requesting forwarding of downlink data of a small cell to the user equipment, when the user equipment can establish an X2 or S1 interface with the macro cell to perform the handover; receiving from the macro cell a data forwarding response message for indicating establishment of a wireless bearer with the macro cell; and transmitting the downlink data to the macro cell through the established wireless bearer, based on the data forwarding response message.
Abstract:
The present invention relates to a network controller within a core network in a radio communication system, and a method for forming an interface with a terminal. In the network controller, if a terminal requests a predetermined radio node for a connection between the terminal and a core network through a first radio interface by a first radio protocol, a connection to the terminal by a NAS protocol is established and configuration information for the connection to the terminal is stored, and if the terminal requests the radio node for a connection between the terminal and the core network through a second radio interface by a second radio protocol, a connection to the terminal by the NAS protocol may be established using the configuration information.
Abstract:
Disclosed are a method and a device for transmitting control information in a wireless communication system. A method for transmitting control information in a wireless communication system may comprise the steps of: transmitting, by a terminal, first cellular control information to a base station in a cellular system; and transmitting, by the terminal, second cellular control information to the base station through an AP in a wireless LAN system, wherein the terminal can communicate with the base station and the AP, and the first cellular control information and the second cellular control information may be control information for a service for the terminal of the base station.
Abstract:
The present invention provides a method and apparatus for supporting device-to-device (D2D) communication in a wireless communication system. The present invention obtains information on time and resources required for signal transmission of corresponding user equipment (UE), estimates transmission time of the signal transmission by using the information on time and resources, and checks propagation delay by comparing the estimated transmission time with reception time of a signal transmitted from an actual corresponding UE. The present invention compares the checked propagation delay with predetermined reference values for converting to D2D communication and determines whether to perform D2D communication. Also, the determining D2D communication may include determining conversion to D2D communication by taking account of a channel state of a received signal.
Abstract:
Disclosed in the present application is a method for a terminal performing a random access procedure in a wireless communication system. Specifically, the method for performing a random access procedure comprises the steps of: transmitting, to a base station, a plurality of random access signals corresponding to a plurality of different beams in a transmission interval corresponding to the corresponding random access signal; receiving a random access response signal corresponding to one random access signal of the plurality of random access signals; and transmitting and receiving a signal to and/or from the base station, using a beam corresponding to the one random access signal, wherein the plurality of random access signals comprise identifier information of the terminal.
Abstract:
A method for performing fast retransmission in a wireless communication system, according to one embodiment of the present disclosure, is performed by a terminal, and comprises the steps of: receiving downlink data or transmitting uplink data; and performing a hybrid automatic repeat request (HARQ) operation including retransmission, in which transmission and reception of a HARQ-acknowledgement (HARQ-ACK) for the downlink data or the uplink data are not present or retransmission scheduling is not present, for the downlink data and the uplink data.
Abstract:
A method for encoding a quasi-cyclic low-density parity-check (LDPC) code according to an embodiment of the present invention may comprise the steps of: generating a multi-edge LDPC code matrix including a high rate code matrix and a single parity check code matrix; and encoding a signal by using the multi-edge LDPC code matrix, wherein the single parity check code matrix includes a first matrix having a non-row-orthogonal structure matrix and a second matrix having a pure row-orthogonal structure, which are concatenated.
Abstract:
A method for performing self-interference cancellation by a terminal may comprise the steps of: receiving RS configuration information for phase estimation of self-interference from a base station; when the terminal operates, with a distributed antenna structure, in a full duplex radio (FDR) mode or operates in a space division duplex (SDD) mode between panels, transmitting an RS on the basis of the RS configuration information; and performing phase estimation for self-interference between the panels on the basis of the RS. The terminal is capable of communicating with at least one of another terminal, a terminal related to an autonomous driving vehicle, a base station or a network.
Abstract:
The present invention relates to a method and an apparatus for generating a signal for low latency in a wireless communication system. The method, according to one embodiment of the present invention, for a communication device generating a situation-reporting signal for low latency and transmitting the signal to a base station in a wireless communication system comprises the steps of: generating the situation-reporting signal on the basis of a pre-set, specific situation recognized by the communication device; and transmitting the generated situation-reporting signal to the base station, wherein the situation-reporting signal may be generated so as to have a subcarrier spacing which is a pre-set number of times larger than a subcarrier spacing of a legacy communication system, the pre-set number being an integer.
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.