Coverage Strategies in Wireless Sensor Networks

Abstract

An energy efficient cover of a region using

Coverage and Connectivity in 3D Wireless Sensor Networks

“…Commuri et al [22] gives details of series of simulated design experiments which demonstrate the energy efficiency of bcc lattice-based deployment strategy compared to random deployment of sensor networks. The work entails different simulated scenarios.…”

“…Failure of a single node in reduced coverage network will result in loss of coverage in 3D WSN field. Since reduced coverage deployment strategy is based on bcc lattice pattern, the work in [22] also deduces that number of nodes required to cover a 3D field is less using bcc lattice-based deployment strategies as opposed to randomly deployed WSNs. Similar Fig.…”

“…b Shows that 100 % connectivity is achieved for lesser number of nodes when using truncated octahedron cell as opposed to cube or hexagonal prism. The figure is a snapshot of results achieved in simulation in [38] to [6,38], Commuri et al [22] also puts the nodes in idle mode such that minimal number of nodes are active at given time resulting in reduced coverage (1-coverage) of the network. A self-healing mechanism is also proposed in which a failing node in a reduced network alerts its neighbors about the impending failure.…”

Adaptive Deployment Scheme for Mobile Relays in Substitution Networks

“…In the last years, many schemes and solutions have been proposed to improve network performance by placing wireless relays in specific positions [11,12]. The most common objectives are energy consumption and coverage as presented in [4,[13][14][15][16][17].…”

“…Compute link parameter for Next and Prev hops; (5) if (RTT next > RTT prev ) then (6) Move towards the Next hop; (7) else if (RTT next < RTT prev ) then (8) Move towards the Prev hop; (9) else (10) Do not move; (11) end if (12) set TIMER to expire in time k × ProbePeriod; (13) end if (14) end while Algorithm 1: APA (adaptive positioning algorithm). more realistic since in real environments, some geographical positions cannot be considered as a suitable position due to potential obstacles, for example, a wireless mobile device cannot cross a vehicles road.…”