Journal
SENSORS
Volume 21, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/s21061942
Keywords
Underwater Sensor Networks (UWSNs); Opportunistic Routing (OR); void node; hop count; energy consumption; Packet Delivery Ratio (PDR)
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EEDOR-VA is an energy-efficient routing protocol that utilizes depth and void avoidance to select forwarding sets, preventing void/trapped nodes from participating in data transmission, thereby saving network resources and reducing data transmission costs. Extensive simulation study shows that EEDOR-VA outperforms other protocols in terms of packet delivery ratio and energy consumption.
Much attention has been focused lately on the Opportunistic Routing technique (OR) that can overcome the restrictions of the harsh underwater environment and the unique structures of the Underwater Sensor Networks (UWSNs). OR enhances the performance of the UWSNs in both packet delivery ratio and energy saving. In our work; we propose a new routing protocol; called Energy Efficient Depth-based Opportunistic Routing with Void Avoidance for UWSNs (EEDOR-VA), to address the void area problem. EEDOR-VA is a reactive OR protocol that uses a hop count discovery procedure to update the hop count of the intermediate nodes between the source and the destination to form forwarding sets. EEDOR-VA forwarding sets can be selected with less or greater depth than the packet holder (i.e., source or intermediate node). It efficiently prevents all void/trapped nodes from being part of the forwarding sets and data transmission procedure; thereby saving network resources and delivering data packets at the lowest possible cost. The results of our extensive simulation study indicate that the EEDOR-VA protocol outperforms other protocols in terms of packet delivery ratio and energy consumption.
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