A hybrid tdma protocol for Ad Hoc Networks

This paper presents the detailed design scheme under OPNET simulation environment about how to implement HTDMA (Hybrid TDMA), a collision-avoid and dynamic slots assignment algorithm. HTDMA is free of "hidden terminal" and "exposed terminal". In OPNET simulation software, MANET (Mobile Ad Hoc Networks) node model are defined with MAC layer using IEEE802.11 protocol, so replace it with HTDMA easily. We compare HTDMA with IEEE802.11 through simulation. The simulation results show that HTDMA outperforms IEEE802.il in terms of end-to-end delay and packet delivery radio. Some future work and improvement are also discussed.