Optimal Deployment Patterns for k-Coverage and k-Connectivity 3D WSNs in Underground Tunnel

摘要

cqvip:In this paper,we first model the mining structure as a arched shape in terms of the tunnel geometry.Based on the regularly placement of nodes in that model,a set of deployment patterns for seamless coverage and k-connectivity is proposed,i.e.1-and 2-connectivity.Further,we figure out the maximum horizontal distance of tangent plane to determine the placement of nodes for k-coverage(k=1,2).Besides,the mathematical relations between the communication radius and the sensing radius are derived,when the network keeps k-coverage(k=1,2) and k-connectivity(k=2,3) under certain regularity constrains for various patterns.Finally,we demonstrate the optimality of several approaches that we have proposed in the aspect of energy consumption and network lifetime.