Method and apparatus for transmission of control and data in vehicle to vehicle communication

A user equipment (UE) in a wireless communication network, the UE comprising:

• a transceiver;
• and
• a controller configured to:
• receive, via the transceiver, from a base station, configuration information on two or more semi-persistent scheduling (SPS) configurations for a sidelink transmission, wherein each of the two or more SPS configurations includes an SPS configuration index for the respective one of the SPS configurations,
• receive, via the transceiver, from the base station, first control information indicating an activation or a release of one of the two or more SPS configurations and including an SPS configuration index for the one of the two or more SPS configurations,
• transmit, via the transceiver, on a physical sidelink control channel (PSCCH), second control information including a scheduling assignment for the sidelink transmission based on the configuration information and the first control information, and
• transmit, via the transceiver, on a physical sidelink shared channel (PSSCH), sidelink data for the sidelink transmission based on the second control information,
• wherein the second control information includes a time gap between initial transmission and retransmission of the second control information and the sidelink data, and
• wherein a resource for the scheduling assignment and a resource for the sidelink data are separated in a frequency domain or in a time domain.