Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from an anchor node, control information that triggers a UE-specific aperiodic positioning signal. The UE may perform, to the anchor node, the UE-specific aperiodic positioning signal based at least in part on the control information. The UE may transmit, to the anchor node, a response based at least in part on the UE-specific aperiodic positioning signal. Numerous other aspects are described.