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Traffic in military ad hoc networks are often broadcast or multicast traffic. A robust and efficient way to handle this type of traffic is the multi-point-relay (MPR) method. Furthermore, frequency spectrum is a scarce resource and must often be shared by several networks resulting in a risk for internetwork interference. The objective of this paper is to analyze the effects from internetwork interference...
The paper examines mobile TDMA-based ad hoc networks exposed to follower jamming. The focus is to examine how the terrain and network protocols influence jamming resistance. To study the network properties under follower jamming, network simulations are performed. The investigated networks in a flat terrain become more jammed than the corresponding networks in a hilly terrain. The packet delivery...
Cooperative broadcasting is a promising technique for efficient as well as robust broadcast of information in ad hoc networks. The paper compares the capacity of scheduled cooperative broadcasting with the capacity of Spatial Reuse TDMA (STDMA) for broadcast traffic in ad hoc networks. Three different routing methods for STDMA are considered: a tree-based solution; default MPR-flooding; and a robust...
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...
With the aim of achieving robust acoustic underwater communication, the paper explores different efficiency enhancements of flooding-based protocols. Pure flooding is robust but suffers from high overhead, i.e., many duplicates are sent which saturates the network. More efficient flooding-based protocols are therefore needed. For network scenarios where most of the traffic is going to one or a few...
The paper investigates robust MPR-based broadcasting in a highly dynamic scenario. There are several methods, or combinations of methods, that can be used to increase the robustness of MPR-based flooding. We investigate the use of a reduced HELLO interval, a fading margin or additional MPRs. It is also important to consider the cost of implementing these methods. To investigate which method to choose,...
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