Performance of MPR-based broadcast methods in mobile ad hoc networks for rural terrains

Abstract

With the aim of achieving robust broadcasting, the paper explores how the terrain affects different MPR-based broadcast methods. As a reference we consider the MPR selection method in OLSR and investigate methods for increasing robustness by the using of physical layer information and additional MPRs. It is also important to consider the overhead of these methods. To assess how terrain properties influence performance we consider mobile scenarios in different rural terrains. A channel model that mimics real radio transmissions and includes terrain effects is employed. The plane earth model is also tested. The terrain has a large influence on overall performance, and the results obtained with the plane earth model can produce misleading results. However, when determining how to select MPR nodes, network connectivity is the main criteria to use.

Where have all the MPRs gone? On the optimal selection of Multi-Point Relays

“…While the geneal strategy must always be the minimization of the global MPR set, specific techniques can be introduced to improve redundancy for extreme cases. A deep analysis of the robustness implications of MPRs minimization are out of the scope of this paper, and it is a theme under active research in the MANET field [41,42]. The interested reader can refer to an ongoing work from the authors on this subject [43] compatible with the technique we describe in this paper.…”