IEEE802.15.4 standard specifies two PHYs: an 868/915 MHz direct sequence spread spectrum (DSSS) PHY and a 2450 MHz DSSS PHY. The 2450 MHz PHY supports an over-the-air data rate of 250 kb/s, and the 868/915 MHz PHY supports over-the-air data rates of 20 kb/s and 40 kb/s. The PHY chosen depends on local regulations and user preference. In this paper main focus is on analyzing and finding suitable routing protocol for low rate wireless personal area networks (LR-WPAN). A simulative approach is used to evaluate performance of routing protocols for LR-WPAN (IEEE802.15.4) using different scenarios. Ns-2 is used for the same as it supports IEEE802.15.4. AODV, AOMDV and MDART protocols were selected for experimentation. MDART outperforms others for Energy used, PDR and Throughput for network of moderate size. But it shows higher delays because of table driven approach.
LR-WPAN, AODV, AOMDV and MDART.