Among different types of protocols for realising WPAN, ZigBee protocol supports high-node density; it is a long range, robust communication protocol, and hence, it is chosen for experimentation in WPAN. The devices of different networks use different protocols, the ZigBee protocol may not be adequate to bring all the consumer electronic devices under WPAN and control them to form a virtual control network.ZigBee stack is taken as base, overlay architecture is built around it by modifying it to incorporate the features of common communication protocol so as to enable the consumer electronics share resources and communicate among themselves leading to a virtual control network.Four different performance metrics are modelled for the newly proposed ZigBee stack christened ZI stack. Average end-to-end delay is modelled, simulated and presented in this paper. The results of comparison are also presented in the paper. Keywords: ZI, SMAC, AODV, CBR, VBR, WPAN
