Capacity-Preserved, Energy-Enhanced Hybrid Topology Management Scheme in Wireless Sensor Networks for Hazardous Applications

Abstract

A wireless sensor network is composed of large number of sensor nodes and they are densely deployed in the field to monitor the environment, collect the data and route it to a sink. The main constraint is that the nodes in such a network have a battery of limited stored energy the network lifetime gets reduced. There are various topology management schemes such as SPAN, STEM, GAF, BEES and so forth, for improving network parameters such as capacity, lifetime, coverage and latency. These schemes do not improve all the mentioned network parameters. Sustainable Physical Activity in Neighbourhood (SPAN) scheme, preserves network capacity, decreases latency but provides less energy savings. Sparse Topology and Energy Management (STEM) scheme does not preserve capacity resulting in great energy savings and high latency. In the proposed scheme, new coordinator rule is implemented in SPAN, and then integrated with STEM. It is observed that the energy conserved increases by about 3.18% to 4.17% without sacrificing network capacity. Due to definite path in the proposed scheme the latency is reduced by almost half the latency of STEM scheme.

Fault tolerant broadcasting analysis in wireless monitoring networks

“…However, the failure of a sensor node should not exert a negative impact on the overall operations of the WSN * Correspondence: ghaffarpour@sut.ac.ir [12]. Since energy consumption is an important problem in sensor nodes [13][14][15][16][17][18], its usage must be controlled in order to prolong the WSN's lifetime.…”

Self-Organized Connectivity Control and Optimization Subjected to Dispersion of Mobile Ad Hoc Sensor Networks

“…How to disperse the networked sensors to achieve a sparse topology is not yet discussed. It is also worthwhile to mention that certain topology control methods [24,25] in ad hoc senor networks have been developed that similarly deal with the issue of removing redundant communication links. However, these works are mainly based on stationary network structure.…”