Sidelink resource pool activation and deactivation for power savings

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

• at least one memory;
• and
• at least one processor coupled to the at least one memory and individually or collectively configured to:
• identify a configuration of a bandwidth part (BWP) for sidelink communication, the BWP comprising at least a first resource pool including a first subset of frequency resources and a second resource pool including a second subset of the frequency resources;
• transmit an activation indication to a second sidelink device, the activation indication activating the second subset of the frequency resources of the second resource pool;
• transmit a sidelink transmission to the second sidelink device in the second subset of the frequency resources of the second resource pool;
• initiate a timer after transmitting the sidelink transmission in the second subset of the frequency resources of the second resource pool;
• and
• deactivate the second subset of the frequency resources of the second resource pool based on an expiration of the timer without sidelink traffic in the second resource pool.