Routing Protocol for Low-Power and Lossy Network Performance Comparison for Objective Functions
Innocent Uzougbo Onwuegbuzie · International Journal of Advanced Trends in Computer Science and Engineering · 2019
IPv6 Routing Protocol for Low-Power and Lossy Network (RPL) is the de-facto routing standard for Wireless Sensor Network (WSN).Minimum Rank with Hysteresis Objective Function (MRHOF) and Objective Function Zero (OF0) are two Objective Functions (OFs) that drives RPL.The challenge to Application Developers is validating the Quality of Service (QoS) of RPL through its OFs, to enable them to build an appreciable confidence level.RPL Simulations was carried out on a total of one hundred (100) nodes, starting with 10 nodes and incremented by 10 until the 100th node, for a duration of twenty (20) minutes.The OFs were validated with various QoS metrics, which are Packet Delivery Ratio (PDR), Churn Rate (CR), Convergence Time (CT) and Power Consumption (PC).From the results, PDR; MRHOF had a steady value of 100% while OF0 had 78% at their minimum, MRHOF outperformed OF0.For CR, MRHOF, and OF0; 35% and 11% respectively.The network is more stable with less CR, OF0 outperformed MRHOF.For CT; MRHOF and OF0; 134224 ms and 59571 ms respectively.Delay increases with increasing CT, OF0 outperformed MRHOF.PC was measured with reference to Microcontroller Unit (MCU) power, Listen power, Transmit power and Low Power Mode (LPM) operations.From the results, MRHOF consumes more power than OF0.The validity of these results is at 98% confidence level as each simulation was performed five times.It is expected that these results will guide developers and researchers on their choice of OF in their projects.