Abstract: An apparatus serves a plurality of user equipments in a wireless communication system. For transmitting/receiving data of a plurality of user equipments, which include at least a first user equipment and a second user equipment, on resources shared by the plurality of user equipments, the apparatus transmits/receives a first data signal of the first user equipment and second data signal of the second user equipment using a non-orthogonal multiple access, NOMA, scheme. The first data signal and the second data signal are modulated using different waveforms prior to superposition of the first and second data signals.

Abstract: A method of an intermediate node for relaying communication between a base station and a terminal may comprise: receiving, from the base station, first control information including on/off indication; and determining whether to relay the communication between the base station and the terminal according to the on/off indication, wherein when the on/off indication indicates ‘on’, the communication between the base station and the terminal is relayed, and when the on/off indication indicates ‘off’, the communication between the base station and the terminal is not relayed.

Abstract: A method and device for avoiding transmission timing errors are disclosed. A RUE method comprising the steps of: receiving a first error measurement request message from a first base station; receiving a second error measurement request message from a second base station; receiving a first reference signal from the first base station on the basis of the first error measurement request message; determining a first transmission timing of the first base station on the basis of the first reference signal; receiving a second reference signal from the second base station on the basis of the second error measurement request message; and determining a second transmission timing of the second base station on the basis of the second reference signal.

Abstract: When a plurality of terminals share the same resources in a wireless communication system, and when control information such as acknowledgement/negative acknowledgement (ACK/NAK) information or scheduling information is transmitted, a method of efficiently performing code division multiplexing (CDM) is required to distinguish the plurality of terminals. In particular, it is necessary to develop a method by which a code sequence of CDM can be selected and used according to each cell condition. Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly share frequency and time resources. The method includes the operations of receiving condition information in a cell; selecting one of a plurality of time domain orthogonal sequences having different lengths, according to the condition information; and allocating the selected time domain orthogonal sequence to a control signal symbol block.

Abstract: An apparatus serves a plurality of user equipments in a wireless communication system. For transmitting/receiving data of a plurality of user equipments, which include at least a first user equipment and a second user equipment, on resources shared by the plurality of user equipments, the apparatus transmits/receives a first data signal of the first user equipment and second data signal of the second user equipment using a non-orthogonal multiple access, NOMA, scheme. The first data signal and the second data signal are modulated using different waveforms prior to superposition of the first and second data signals.

Abstract: The method for transmitting control information in a mobile communication system includes: determining a control channel resource for transmitting control information by means of the data channel region; and transmitting the control information using the determined control channel resource. A capacity for control information, which increases for multiple user multiple-input multiple-out (MIMOs) in a heterogeneous network environment, for heterogeneous network interference control using carrier aggregation, for frequent use of a multicast-broadcast single frequency network (MBSFN) subframe, and for a COMP transmission control, may be satisfied. Further, an adaptive resource allocation based on a requested capacity for control information may be enabled, and the efficient utilization of resources may also be enabled.

Abstract: An operation method of a first access point (AP) may comprise: transmitting, to a control device of a base station, channel information between the first AP and one or more user equipments (UEs) connected to the base station; receiving allocation information determined by the control device; identifying an entity to decode a uplink (UL) signal of each of the one or more UEs from among a plurality of APs and the control device constituting the base station, based on the allocation information; directly performing a decoding operation on a first UL signal received from a first UE among the one or more UEs, based on the allocation information; and transmitting, to the control device, a first report related to a result of the decoding operation on the first UL signal.

Abstract: Disclosed is a wireless communication system using multiple transmission and reception points. In a wireless communication system having a first transmission and reception point and at least one second transmission and reception point belonging to the same cell, the first transmission and reception point has a wider transmission area than the at least one second transmission and reception point, and the first transmission and reception point and the at least one second transmission and reception point generate downlink transmission signals by using the same physical layer cell ID or virtual cell IDs allocated to each terminal, and then the terminals generate uplink transmission signals by using the allocated virtual cell IDs.

Abstract: The method for transmitting control information in a mobile communication system includes: determining a control channel resource for transmitting control information by means of the data channel region; and transmitting the control information using the determined control channel resource. A capacity for control information, which increases for multiple user multiple-input multiple-out (MIMOs) in a heterogeneous network environment, for heterogeneous network interference control using carrier aggregation, for frequent use of a multicast-broadcast single frequency network (MBSFN) subframe, and for a CoMP transmission control, may be satisfied. Further, an adaptive resource allocation based on a requested capacity for control information may be enabled, and the efficient utilization of resources may also be enabled.

Abstract: An operation method of a first cell in a communication system may include: receiving, from a first communication node that is an upper node of the first cell, a first signal including second cell configuration information of a second cell connected with the first communication node and a second communication node that is a lower node of the first cell; identifying, based on the first signal, that the first cell and the second cell are jointly operated by the first communication node as coordinative PCells; transmitting, to the second communication node, a second signal including information on joint operations of the coordinative PCells by the first communication node; and performing communication with the first communication node and the second communication node based on the joint operations of the coordinative PCells.

Abstract: An operation method of a first communication node in a communication system may include: generating a base sequence; performing a quadrature phase shift keying (QPSK) operation on the base sequence; generating a first signal sequence by performing a rotational transform operation by a first angle on a complex plane with respect to a result of the QPSK operation; modulating the first signal sequence to generate first modulation symbols; and transmitting a first signal composed of the first modulation symbols to a second communication node, wherein each of a plurality of elements constituting the first signal sequence has a real value or a pure imaginary value.

Abstract: A wireless communication system includes a first transmitter and a second transmitter. For a transmission or reception of data of a first user equipment and data of a second user equipment on resources shared by the first user equipment and the second user equipment, the first transmitter is configured for a superimposed non-orthogonal multiple access, NOMA, transmission or reception of a first data signal of the first user equipment and a second data signal of the second user equipment, and the second transmitter is configured for a superimposed non-orthogonal multiple access, NOMA, transmission or reception of a third data signal of the first user equipment and a fourth data signal of the second user equipment.

Abstract: A method of a user equipment (UE) may comprise: performing a lower-layer triggered mobility (LTM) preparation phase for LTM candidate configuration; executing an LTM procedure based on a layer-1 (L1) measurement result for one or more candidate cells indicated by the LTM candidate configuration; and completing the LTM procedure when a cell switch procedure according to the LTM procedure is completed.

Abstract: A timing adjustment method performed by a terminal may include: acquiring downlink synchronization with a base station; obtaining, from the base station, TA granularity-related information; transmitting, to the base station, a preamble and/or an SRS; receiving, from the base station, a TA command generated based on the preamble and/or SRS; determining a timing for uplink frame transmission by interpreting the TA command based on a TA granularity determined based on the TA granularity-related information; and performing the uplink frame transmission based on the determined timing.

Abstract: A method of a terminal may include: receiving, from a base station, at least one SSB belonging to a first layer; receiving, from the base station, at least one SSB belonging to a second layer; determining valid SSB(s) from among the at least one SSB belonging to the first layer and the at least one SSB belonging to the second layer; selecting at least one first SSB belonging to a layer having a higher priority among the first layer and the second layer from among the valid SSB(s); and reporting the selected first SSB to the base station, and using a beam used for receiving the first SSB to perform an initial access procedure for communications with the base station, wherein each SSB includes at least one of a synchronization signal or a broadcast channel.

Abstract: A method for operating a first communication node, in one embodiment of a communication system, comprises the steps of: generating a first binary sequence and a second binary sequence; generating, on the basis of the first and second binary sequences and a BPSK operation, a first intermediate sequence having 2N elements; generating, on the basis of an operation on the elements of the first intermediate sequence, a first signal sequence including N elements; mapping, to N subcarriers, first modulation symbols generated by modulating the first signal sequence; and transmitting a first signal including the mapped first modulation symbols, wherein the first and second binary sequences are generated on the basis of generator polynomials of which the maximum order is p+1, wherein p is a natural number and N can be a natural number having a value of (2p?1).

Abstract: Disclosed is a wireless communication system using multiple transmission and reception points. In a wireless communication system having a first transmission and reception point and at least one second transmission and reception point belonging to the same cell, the first transmission and reception point has a wider transmission area than the at least one second transmission and reception point, and the first transmission and reception point and the at least one second transmission and reception point generate downlink transmission signals by using the same physical layer cell ID or virtual cell IDs allocated to each terminal, and then the terminals generate uplink transmission signals by using the allocated virtual cell IDs.

Abstract: A method of a terminal may include: receiving, from a base station, at least one SSB belonging to a first layer; receiving, from the base station, at least one SSB belonging to a second layer; determining valid SSB(s) from among the at least one SSB belonging to the first layer and the at least one SSB belonging to the second layer; selecting at least one first SSB belonging to a layer having a higher priority among the first layer and the second layer from among the valid SSB(s); and reporting the selected first SSB to the base station, and using a beam used for receiving the first SSB to perform an initial access procedure for communications with the base station, wherein each SSB includes at least one of a synchronization signal or a broadcast channel.

Abstract: A method by which a first communication node operates in a communication system comprises the steps of: generating a first sequence and a second sequence; generating a first signal sequence on the basis of the first sequence and the second sequence; and transmitting a first signal generated by modulating the first signal sequence, wherein even-numbered elements and odd numbered elements of the first signal sequence are classified into a first element group and a second element group, respectively, and any one of the first sequence and the second sequence can be mapped in ascending order in the first element group, and the other one thereof can be mapped in descending order in the second element group.

Abstract: Disclosed is a method for effectively forming uplink control information transmitted through a downlink from a base station to a terminal in a mobile communication system for providing a packet service and transmitting the uplink control information with minimum radio resources occupied. The method includes generating uplink control information; allocating the uplink control information to a downlink-shared radio resource for packet data transmission based on downlink scheduling information; and transmitting the radio resource to a terminal. The present invention is applied to a mobile communication system.