An enhanced DAP-NAD scheme for multi-hop broadcast based on MIL-STD-188-220 networks

In this paper, we propose an enhanced DAP-NAD scheme for multi-hop broadcast based on MIL-STD-188-220 networks. MIL-STD-188-220 is a key factor for real-time communication in the battlefield. We define it as “Multi-hop Broadcast” that a source station transmits a message to all stations in multi-hop wireless networks. The multi-hop broadcast schemes as defined in the standard cause a lot of unnecessary delays. This is because they do not suggest the algorithms about an optimal selection of relay stations for multi-hop broadcast. Furthermore, no priority of network access opportunity is given to these relay stations over DAP (Deterministic Adaptable Priority)- NAD (Network Access Delay). To solve this problem, we adopt the concept of MPR (Multi-Point Relay) and modify the mechanism of DAP-NAD based on the topology information. The proposed scheme is thoroughly examined by simulation method. The results show that complete time of multi-hop broadcast becomes significantly shorter than the time in conventional scheme. This improves the performance of MIL-STD-188-220 based on military systems.