Modeling and Performance Analysis for Pipelined-Forwarding MAC Protocols for Linear Wireless Sensor Networks

In PRI-MAC (Pipelined-forwarding, routing-Integrated and effectively-Identifying MAC) protocol, a node gets only one chance to succeed in data transmission scheduling per cycle and on success, a node can transmit only one data packet. On the other hand, in JRAM (joint routing and MAC) protocol, a node gets multiple (k) chances to succeed in data transmission scheduling per cycle and on success, a node can transmit multiple (N') data packets. Therefore, the analytical model proposed for performance analysis of PRI-MAC in a multi-hop linear wireless sensor network (LWSN) is not useful for the performance analysis of JRAM. In this paper, we develop an analytical model for the performance analysis of JRAM in a multi-hop LWSN. Using the model, we evaluate the network performance in terms of packet delivery ratio (PDR), average energy consumption of a sensor node per second and end-to-end transmission delay (E2ETD). Through extensive ns-2.35-based simulations, we validate our proposed model and show the dependence of performance on various system parameters. Since most of the existing pipelined-forwarding MAC protocols can be modeled as a special case of JRAM, our proposed approach can be extended to analyze the performance of those protocols as well.