Reducing latency for closed loop sidelink communications for non-terrestrial networks

A method for wireless communication at a second wireless device, comprising:

• receiving one or more messages from a first wireless device on a first set of sidelink resources of a sidelink;
• receiving, exclusive of a request by the second wireless device to a base station of a non-terrestrial network for an allocation of sidelink resources for the second wireless device, an indication of a second set of sidelink resources for the second wireless device to use to transmit to at least the first wireless device on the sidelink in response to the one or more messages from the first wireless device;
• and
• transmitting one or more messages to the first wireless device on the second set of sidelink resources.

An apparatus for wireless communication at a first wireless device, comprising:

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• transmit, to a base station of a non-terrestrial network, a message requesting both an allocation of sidelink resources for the first wireless device to use to transmit to at least a second wireless device on a sidelink and an allocation of sidelink resources for at least the second wireless device to use to transmit to at least the first wireless device on the sidelink;
• receive, from the base station of the non-terrestrial network and in response to the transmitted request message, an indication of a first set of sidelink resources for the first wireless device;
• transmit one or more messages to at least the second wireless device on the first set of sidelink resources;
• and
• receive one or more messages from at least the second wireless device on a second set of sidelink resources.