Cancellation of sidelink data channel

A method for wireless communications, comprising:

• transmitting, to a first UE, a first downlink control information scheduling a sidelink transmission by the first UE to a second UE on a first set of resources associated with a sidelink shared channel;
• transmitting, to the first UE, a second downlink control information comprising an indication of a second set of resources that is cancelled from the first set of resources for the sidelink transmission;
• and
• receiving, from the first UE, a modified transmission over a portion of the first set of resources in accordance with the first downlink control information and the second downlink control information.

An apparatus for wireless communications at a first user equipment (UE), comprising:

• at least one processor;
• at least one memory coupled with the at least one processor;
• and
• instructions stored in the at least one memory and executable by the at least one processor to cause the apparatus to:
• receive a first downlink control information scheduling a sidelink transmission by the first UE to a second UE on a first set of resources associated with a sidelink shared channel;
• receive a second downlink control information comprising an indication of a second set of resources that is cancelled from the first set of resources for the sidelink transmission;
• modify at least a portion of the sidelink transmission based at least in part on the received second downlink control information;
• and
• transmit the modified sidelink transmission over a portion of the first set of resources in accordance with the first downlink control information and the second downlink control information.

An apparatus for wireless communications, comprising:

• at least one processor;
• at least one memory coupled with the at least one processor;
• and
• instructions stored in the at least one memory and executable by the at least one processor to cause the apparatus to:
• transmit, to a first UE, a first downlink control information scheduling a sidelink transmission by the first UE to a second UE on a first set of resources associated with a sidelink shared channel;
• transmit, to the first UE, a second downlink control information comprising an indication of a second set of resources that is cancelled from the first set of resources for the sidelink transmission;
• and
• receive, from the first UE, a modified transmission over a portion of the first set of resources in accordance with the first downlink control information and the second downlink control information.