The present disclosure relates to a method and a device for providing a V2X service in a next generation radio access technology (new RAT). The present embodiments relate to a method for a terminal to control a sidelink HARQ feedback operation, the method comprising the steps of: receiving, from a transmitting terminal, group cast sidelink data through a physical sidelink shared channel (PSSCH); determining, on the basis of positional information of the transmitting terminal, whether to transmit HARQ feedback information of the group cast sidelink data; and, when it is determined to transmit the HARQ feedback information, transmitting the HARQ feedback information.

The present disclosure relates to a method and a device for providing a V2X service in a next generation radio access technology (new RAT). The present embodiments relate to a method for a terminal to control a sidelink HARQ feedback operation, the method comprising the steps of: receiving, from a transmitting terminal, group cast sidelink data through a physical sidelink shared channel (PSSCH); determining, on the basis of positional information of the transmitting terminal, whether to transmit HARQ feedback information of the group cast sidelink data; and, when it is determined to transmit the HARQ feedback information, transmitting the HARQ feedback information.

The present disclosure relates to a method and device for providing a V2X service in a next generation radio access technology (new RAT). The present embodiments provide a method for performing sidelink communication by a terminal and a device therefor, the method comprising the steps of: receiving sidelink synchronization block (SSB) configuration information including synchronization information for sidelink communication; monitoring a SSB monitoring slot configured on the basis of the SSB configuration information; and receiving a SSB in the SSB monitoring slot, wherein the SSB comprises a sidelink primary synchronization signal (S-PSS), a sidelink secondary synchronization signal (S-SSS), and a physical sidelink broadcast channel (PSBCH), and the S-PSS, the S-SSS, and the PSBCH are allocated to N consecutive symbols in the SSB monitoring slot.

The present disclosure relates to a method and device for providing a V2X service in a next generation radio access technology (new RAT). The present embodiments provide a method for performing sidelink communication by a terminal and a device therefor, the method comprising the steps of: receiving sidelink synchronization block (SSB) configuration information including synchronization information for sidelink communication; monitoring a SSB monitoring slot configured on the basis of the SSB configuration information; and receiving a SSB in the SSB monitoring slot, wherein the SSB comprises a sidelink primary synchronization signal (S-PSS), a sidelink secondary synchronization signal (S-SSS), and a physical sidelink broadcast channel (PSBCH), and the S-PSS, the S-SSS, and the PSBCH are allocated to N consecutive symbols in the SSB monitoring slot.

Multiple channels are aggregated. In an example embodiment, first data is transmitted on a first channel to a wireless device, and second data is simultaneously transmitted on a second channel to the wireless device. The first data and the second data are transmitted in a coordinated manner by aggregating the first channel and the second channel. Various example channel characteristics and combinations thereof are described. Different data allocation options for aggregated channels are described. Other alternative implementations are also presented herein.

Multiple channels are aggregated. In an example embodiment, first data is transmitted on a first channel to a wireless device, and second data is simultaneously transmitted on a second channel to the wireless device. The first data and the second data are transmitted in a coordinated manner by aggregating the first channel and the second channel. Various example channel characteristics and combinations thereof are described. Different data allocation options for aggregated channels are described. Other alternative implementations are also presented herein.

Different filtered-orthogonal frequency division multiplexing (f-OFDM) frame formats may be used to achieve the spectrum flexibility. F-OFDM waveforms are generated by applying a pulse shaping digital filter to an orthogonal frequency division multiplexed (OFDM) signal. Different frame formats may be used to carry different traffic types as well as to adapt to characteristics of the channel, transmitter, receiver, or serving cell. The different frame formats may utilize different sub-carrier (SC) spacings and/or cyclic prefix (CP) lengths. In some embodiments, the different frame formats also utilize different symbol durations and/or transmission time interval (TTI) lengths.

A method for reducing power consumption of a terminal that communicates with a base station in a mobile communication system using a multi-carrier sturcture composed of a primary component carrier and at least one secondary component carrier comprises: receiving a discontinuous reception (DRX) parameter group for multi carriers from the base station; and setting the multi carriers to the same parameter value, by using the received parameter group. The method for reducing power consumption of the terminal further comprises: performing a downlink control channel receive operation on each carrier according to a DRX cycle. As the base station in the mobile communication system using the multi-carrier structure simplifies the DRX process for reducing power consumption of a terminal by reducing signaling load for the multi-carrier control of the terminal, it becomes possible to reduce power consumption of the terminal.

Multiple channels are aggregated. In an example embodiment, first data is transmitted on a first channel to a wireless device, and second data is simultaneously transmitted on a second channel to the wireless device. The first data and the second data are transmitted in a coordinated manner by aggregating the first channel and the second channel. Various example channel characteristics and combinations thereof are described. Different data allocation options for aggregated channels are described. Other alternative implementations are also presented herein.

Multiple channels are aggregated. In an example embodiment, first data is transmitted on a first channel to a wireless device, and second data is simultaneously transmitted on a second channel to the wireless device. The first data and the second data are transmitted in a coordinated manner by aggregating the first channel and the second channel. Various example channel characteristics and combinations thereof are described. Different data allocation options for aggregated channels are described. Other alternative implementations are also presented herein.