Abstract: A sidelink communication method performed by a UE is provided. The method includes receiving from a base station a message including zone configuration information and resource pool configuration information and selecting a zone type mapped to a speed of the UE among zone types indicated by the zone configuration information. A zone identifier is determined based on configuration information of the selected zone type, the configuration information of the selected zone type being included in the zone configuration information. The sidelink communication is performed using a resource pool mapped to the zone identifier among resource pools indicated by the resource pool configuration information.

Abstract: An operation method of a first UE in a communication system is provided. The method includes transmitting to a second UE a an SL-SSB in an omni-directional scheme and transmitting the SL-SSB in a beamforming scheme when a response message for the SL-SSB transmitted in the omni-directional scheme is not received from the second UE. Additionally, sidelink communication with the second UE according to the beamforming scheme when a response message for the SL-SSB transmitted in the beamforming scheme is received from the second UE.

Abstract: An operation method of a first terminal in a communication system is provided. The method includes configuring a plurality of sidelink (SL) bandwidth parts (BWPs) used for SL communication between the first terminal and a second terminal and transmitting an SL BWP list including one or more SL BWPs among the plurality of SL BWPs to the second terminal via a default SL BWP. The SL communication is then performed with the second terminal using an initial SL BWP among the one or more SL BWPs included in the SL BWP list.

Abstract: An operation method of a first communication node in a communication system supporting Vehicle-to-Everything (V2X) communications can include: determining at least one frequency band for transmission of semi-persistent scheduling (SPS) traffic; generating user equipment (UE) assistance information including information indicating the at least one frequency band; and transmitting the UE assistance information to a base station supporting the V2X communication.

Abstract: An operation method of a terminal in a vehicle-to-everything (V2X) communication system may include: transmitting an indicator requesting provision of a low-latency communication service to a first base station; receiving from the first base station a radio link failure (RLF) triggering condition configured according to requirements of the low-latency communication service; measuring a radio link between the terminal and the first base station based on the RLF triggering condition; and in response to detecting a problem of the radio link, selecting a resource within an exceptional resource pool indicated by the first base station, and performing communication with the first base station using the selected resource during a duration beginning when the problem of the radio link is detected until a timer used for declaring an RLF expires.

Abstract: An operation method of a base station in a communication system is provided. The method includes generating TDD-uplink-downlink configuration common information including information regarding a DL-UL transmission period, a DL pattern indicating DL resources, a UL pattern indicating UL resources, and a SL pattern indicating SL resources and transmitting to a UE system information including the TDD-UL-DL-configuration common information. Therefore, the performance of the communication system is improved.

Abstract: An operation method of a PM participating in platooning in a communication system is provided. The method includes receiving, from a PL participating in the platooning, information regarding beam configuration between the PL and a base station and determining a beam reception range based on a first receiving direction of the PL. The first receiving direction is indicated by the information regarding beam configuration. The method further includes measuring a signal quality of a first transmission beam of the base station by changing a receiving direction of the PM within the beam reception range and determining a receiving direction in which the first transmission beam has a best signal quality as a final receiving direction.

Abstract: A sidelink communication method performed by a first UE in a communication system is provided. The method includes receiving, from a base station, a first message including a first indicator that indicates sidelink transmission (ST) resources used for sidelink transmission and sidelink reception (SR) resources used for sidelink reception and identifying the ST resources and the SR resources indicated by the first indicator included in the first message. Sidelink communication is then performed with a second UE using the ST resources and the SR resources.

Abstract: A sidelink communication method performed by a first user equipment (UE) in a communication system includes steps of: generating sidelink control information (SCI) including first resource allocation information for sidelink groupcast data and second resource allocation information for a hybrid automatic repeat request (HARQ) response for the sidelink groupcast data; transmitting the SCI to a plurality of UEs participating in sidelink communication; transmitting the sidelink groupcast data to the plurality of UEs using resources indicated by the first resource allocation information; and receiving the HARQ response for the sidelink group data from one or more UEs among the plurality of UEs using resources indicated by the second resource allocation information.

Abstract: An operation method of a terminal located in a vehicle supporting vehicle-to-everything (V2X) communication may include: receiving, from a base station, a first message requesting reporting of a first counter corresponding to a channel busy ratio (CBR) measurement cycle for a carrier (re)selection procedure; transmitting, by the terminal, a second message including the first counter to the base station; and receiving, from the base station, a third message including a second counter corresponding to a CBR measurement cycle for a resource pool (re)selection procedure. The second counter can be reconfigured by the base station to be greater than or equal to the first counter.

Abstract: An operation method of a first terminal in a vehicle-to-everything (V2X) communication system may include: performing V2X communication with a second terminal based on an original semi-persistent scheduling (SPS) configuration in a first carrier; receiving sidelink control information (SCI) from the second terminal, the SCI including a changed SPS configuration to be applied to aggregated carriers including the first carrier; and performing the V2X communication with the second terminal based on the changed SPS configuration to be applied to the aggregated carriers.

Abstract: An operation method of a first communication node in a vehicle-to-everything (V2X) communication system may include: receiving, by the first communication node, control information including resource allocation information from a second communication node; receiving, by the first communication node, data from the second communication node through a radio resource indicated by the resource allocation information included in the control information; generating, by the first communication node, sidelink control information (SCI) including reception configuration information indicating the radio resource used for transmission of the data by the second communication node based on the resource allocation information; and transmitting, by the first communication node, the SCI to a third communication node.

Abstract: An operation method of a terminal in a V2X communication system may include: transmitting, by the terminal, a first radio resource control (RRC) message to a base station supporting a first radio access technology (RAT), the first RRC message including information indicating that the terminal supports multiple RATs including at least a first RAT and a second RAT; receiving, by the terminal, a second RRC message from the base station, the second RRC message including information indicating that multi-RAT based operations are allowed; transmitting, by the terminal, a resource request message for requesting resource allocation for V2X communication to an access point supporting the second RAT when a channel busy ratio (CBR) measurement result is greater than or equal to a CBR threshold in a channel configured by the base station; receiving, by the terminal, from the access point a resource allocation message including resource allocation information in response to the resource request message; and transmitting,

Abstract: An operation method of a first communication node located in a vehicle may include: performing V2X communication with a second communication node using an original resource according to an original SPS configuration; when a congestion level in the original resource is not less than a predetermined threshold and at least one target base station supporting V2X communication is discovered, generating new SPS configuration to be applied to the serving base station and the at least one target base station by changing original SPS configuration; performing a message transmission and reception procedure with the at least one target base station for delivery of new SPS configuration; and performing V2X communication with the second communication node using first resource scheduled by the serving base station based on new SPS configuration and second resource scheduled by the at least one target base station based on new SPS configuration.

Abstract: An operation method of a first terminal in a communication system is provided. The method includes configuring a plurality of sidelink (SL) bandwidth parts (BWPs) used for SL communication between the first terminal and a second terminal and transmitting an SL BWP list including one or more SL BWPs among the plurality of SL BWPs to the second terminal via a default SL BWP. The SL communication is then performed with the second terminal using an initial SL BWP among the one or more SL BWPs included in the SL BWP list.

Abstract: An operation method of a PM participating in platooning in a communication system is provided. The method includes receiving, from a PL participating in the platooning, information regarding beam configuration between the PL and a base station and determining a beam reception range based on a first receiving direction of the PL. The first receiving direction is indicated by the information regarding beam configuration. The method further includes measuring a signal quality of a first transmission beam of the base station by changing a receiving direction of the PM within the beam reception range and determining a receiving direction in which the first transmission beam has a best signal quality as a final receiving direction.

Abstract: A sidelink communication method performed by a first user equipment (UE) in a communication system includes steps of: generating sidelink control information (SCI) including first resource allocation information for sidelink groupcast data and second resource allocation information for a hybrid automatic repeat request (HARQ) response for the sidelink groupcast data; transmitting the SCI to a plurality of UEs participating in sidelink communication; transmitting the sidelink groupcast data to the plurality of UEs using resources indicated by the first resource allocation information; and receiving the HARQ response for the sidelink group data from one or more UEs among the plurality of UEs using resources indicated by the second resource allocation information.

Abstract: A sidelink communication method performed by a UE includes receiving from a base station a message including first configuration information of a common resource pool and second configuration information for an occupancy state reporting of the common resource pool. The method also includes receiving from the base station an indicator indicating resources used for sidelink communication within the common resource pool by performing a monitoring operation on resources indicated by the second configuration information and performing sidelink communication using resources other than the resources indicated by the indicator within the common resource pool indicated by the first configuration information.

Abstract: A sidelink communication method performed by a UE is provided. The method includes receiving from a base station a message including zone configuration information and resource pool configuration information and selecting a zone type mapped to a speed of the UE among zone types indicated by the zone configuration information. A zone identifier is determined based on configuration information of the selected zone type, the configuration information of the selected zone type being included in the zone configuration information. The sidelink communication is performed using a resource pool mapped to the zone identifier among resource pools indicated by the resource pool configuration information.

Abstract: A sidelink communication method performed by a first UE in a communication system is provided. The method includes receiving, from a base station, a first message including a first indicator that indicates sidelink transmission (ST) resources used for sidelink transmission and sidelink reception (SR) resources used for sidelink reception and identifying the ST resources and the SR resources indicated by the first indicator included in the first message. Sidelink communication is then performed with a second UE using the ST resources and the SR resources.