Does Zigbee contain a field like NAV(Network Allocation Vector) which is present in Wi-Fi? The NAV field acts as a counter to tell the neighbouring nodes about the duration of the transmission.
@Kaustubh The short answer is "No". Here is the explanation. Zigbee MAC is built on WPAN 802.15.4 MAC. NAV is considered a "virtual" carrier sensing mechanism. The virtual carrier-sense mechanism, and the RTS(request-to-send )/CTS(clear-to-send) are not employed in WPAN, because of the low data rate, short packets, and high ratio of packet header and control packets to payload data for a single node.