Methods, apparatus and systems for wireless sensing are described. In one example, a described system in a wireless data communication network comprises: a transmitter configured to transmit a time series of wireless sounding signals (WSS) based on a wireless protocol associated with the wireless data communication network, and a receiver. The wireless data communication network comprises a physical (PHY) layer, a medium access control (MAC) layer, and at least one higher layer. The receiver is configured to: receive the time series of WSS (TSWSS) based on the wireless protocol through a wireless channel of a venue, and perform a plurality of wireless sensing measurements based on the received TSWSS to obtain sensing measurement results. The PHY layer or the MAC layer of the receiver reports the sensing measurement results to the at least one higher layer of the receiver. The at least one higher layer of the receiver performs a sensing-based task based on the sensing measurement results.