Abstract: The present disclosure relates to performing beam alignment based on a position in a wireless communication system, and a method for operating a terminal includes generating sequences for chirp signals, mapping complex symbols in the sequences to resource elements (REs) that are allocated for the chirp signals, generating orthogonal frequency division multiplexing (OFDM) symbols including the complex symbols, and transmitting OFDM symbols including the chirp signals, wherein, among the chirp signals, at least some of chirp signals adjacent to each other may overlap on a time axis.

Abstract: The present disclosure is to sense a resource for sidelink communication in a wireless communication system. A method of operating a terminal in a wireless communication system may comprise receiving sidelink data through a physical sidelink shared channel (PSSCH) from another terminal and transmitting a feedback signal for the sidelink data through a physical sidelink feedback channel (PSFCH). The feedback signal may comprise hybrid automatic repeat request (HARQ)-acknowledge (ACK)/negative-ACK (NACK) information corresponding to the sidelink data and information related to a location of the PSSCH, and the feedback signal may be transmitted using a plurality of beams.

Abstract: The present disclosure relates to initial beam alignment in a wireless communication system. A method of operating a first terminal in a wireless communication system may comprise transmitting at least one synchronization signal and first messages using at least one transmit beam, receiving, from a second terminal, which has received a first message of the first messages, an ACK of acknowledges (ACKs) transmitted through a resource associated with the first message, and transmitting a second message comprising information related to the ACK using a first transmit beam used to transmit the first message.

Abstract: The method of performing local routing comprises configuring a next hop and a destination IAB address in a first IAB node based on an IAB donor, receiving a V2X message from a first terminal accessing the first IAB node, and transmitting the V2X message to a second terminal accessing a second IAB node through the second IAB node based on the local routing. When the first IAB node receives the V2X message from the first terminal through a V2X radio bearer, a backhaul adaptation protocol (BAP) packet data unit (PDU) comprising a BAP header with a V2X local routing bit set to enable and the V2X message may be generated, and the V2X message may be transmitted to the second terminal through the second IAB node based on a BAP layer.

Abstract: The purpose of the present disclosure is to deliver a vehicle-to-vehicle (V2V) message in a wireless communication system. An operation method of an integrated access and backhaul (IAB) node may comprise the steps of: establishing a directlink connection with a terminal; receiving data including an event message from the terminal through the directlink connection; and transmitting system information including the event message to at least one terminal.

Abstract: A method and apparatus for recognizing signals in a mobile communication system reduces a mean acquisition time based on a signal-to-noise ratio of a received signal and the moving speed of user equipment which transmitted the signal. This apparatus includes a multi-path searcher of a base station modem which analyzes a signal from the moving user equipment using a Doppler estimator, decides the moving speed of the user equipment, and transmits a control signal proportional to the moving speed to coherent and non-coherent accumulators. A signal-to-interference ratio estimator then decides a signal-to-noise ratio of the signal and compensates for a control signal transmitted to each accumulator. Through this approach, higher reliability is achieved than other multi-path searchers, which merely consider the moving speed of the user equipment. Also, a mean acquisition time taken to recognize and search signals and an initial synchronization time are reduced and wireless resources of a base station are saved.

Abstract: A method and apparatus for recognizing signals in a mobile communication system reduces a mean acquisition time based on a signal-to-noise ratio of a received signal and the moving speed of user equipment which transmitted the signal. This apparatus includes a multi-path searcher of a base station modem which analyzes a signal from the moving user equipment using a Doppler estimator, decides the moving speed of the user equipment, and transmits a control signal proportional to the moving speed to coherent and non-coherent accumulators. A signal-to-interference ratio estimator then decides a signal-to-noise ratio of the signal and compensates for a control signal transmitted to each accumulator. Through this approach, higher reliability is achieved than other multi-path searchers, which merely consider the moving speed of the user equipment. Also, a mean acquisition time taken to recognize and search signals and an initial synchronization time are reduced and wireless resources of a base station are saved.