Medium Access in Internet of Things

In this chapter, the medium access control, connectivity, and diversity reception approaches are discussed for wireless underground communications. The connectivity and interference models are studied for ad hoc and hybrid networks. The topology control mechanisms for maintaining network connectivity are explored for maximizing network capacity under the physical models (e.g., the protocol interference model and physical interference model). Moreover, the underground diversity is examined for 3W-Rake receiver and coherent detection along with experimental evaluation. Finally, the chapter is concluded with comprehensive analysis of performance of equalization techniques.