PECDF-CMRP: A Power-Efficient Compressive Data Fusion and Cluster-Based Multi-hop Relay-Assisted Routing Protocol for IoT Sensor Networks

Wireless sensor network (WSN) is the predominantly used technology in building real-time event monitoring and dissemination frameworks for the internet of things (IoT) applications. However, WSN being power-hungry, fragile, and highly susceptible to loss of connectivity, it becomes vital to strengthen the network's communication reliability and energy efficiency. In this paper, a power-efficient compressive data fusion and cluster-based multi-hop relay-assisted protocol (PECDF-CMRP) for IoT sensor networks is proposed. Firstly, K-means algorithm is adapted to assign the nodes into unequal cells. Then cluster heads are nominated by multi-weight functions. Next, relays are chosen from the K cells to establish cooperative networks for data broadcast from the event sectors to the central gateway. The relay allocation is formulated as a maximization problem regarding the node's energy and path loss. The data aggregation is realized with single-level wavelet sparsity-based fusion. Experimental results confirm the supremacy of the proposed PECDF-CMRP in terms of reduced delay and energy consumption with enhanced lifetime and reception-ratio well above related models.