QoS provisioning-based routing protocols using multiple data sink in IoT-based WSN

The Internet of Things (IoT) is a promising paradigm in which the objects are fused with the capabilities of sensing, networking, identifying and processing to make it feasible for them to communicate with one another and with the other dedicated devices over the Internet to acquire some goals. Wireless Sensor Network (WSN)-based IoT has proliferated its manifold applications in almost every sector of human lives. Quality of Service (QoS) provisioning in WSN-based IoT still requires significant research attention. In this paper, QoS provisioning-based routing protocols are proposed that use multiple data sinks in WSN-based IoT. The proposed protocols are named as Optimized-Energy and Threshold Sensitive Stable Election Protocol (O-ETSSEP) and Multiple data Sinks-based Optimized-ETSSEP (MSO-ETSSEP). The Cluster Head (CH) selection is optimized by incorporating distance, residual energy, node density and energy threshold factors in both protocols. Both protocols use three levels of energy heterogeneity for the energy balancing in the network. MSO-ETSSEP employs multiple (four) data sinks around each periphery of the square-shaped network to mitigate the hot-spot problem by circumventing multi-hop communication. The performance evaluation of these protocols is done based on the QoS provisioning performance metrics. The simulation results obtained confirm the superiority of the proposed protocols over the state-of-the-art protocols.