Method and apparatus for supporting bandwidth part based operations in sidelink communication

An operation method of a first terminal in a communication system, the operation method comprising:

• generating sidelink control information (SCI) including a sidelink (SL) bandwidth part (BWP) indicator;
• transmitting the SCI to a second terminal in a first SL BWP;
• performing a SL switching operation from the first SL BWP to a second SL BWP indicated by the SL BWP indicator included in the SCI;
• and
• performing sidelink transmission with the second terminal in the second SL BWP,
• wherein an SL resource pool is configured based on a reference BWP, and when a first numerology of the reference BWP is different from a second numerology of the second SL BWP, the SL resource pool is applied to the second SL BWP in consideration of a ratio between the first numerology and the second numerology.

An operation method of a first terminal in a communication system, the operation method comprising:

• generating sidelink control information (SCI) including a sidelink (SL) bandwidth part (BWP) indicator;
• transmitting the SCI to a second terminal in a first SL BWP;
• performing a SL switching operation from the first SL BWP to a second SL BWP indicated by the SL BWP indicator included in the SCI;
• and
• performing sidelink transmission with the second terminal in the second SL BWP,
• wherein the SCI further includes a subchannel offset, and the subchannel offset is an offset between a subchannel in which the SCI is transmitted and a first subchannel in which the sidelink transmission associated with the SCI is performed,
• wherein when a first numerology of the first SL BWP is different from a second numerology of the second SL BWP, the subchannel offset is configured based on the first numerology or the second numerology.