Abstract
Internet of Things (IoT) is capable of connecting millions of devices to communicate and exchange data, hence Quality of Service (QoS) consideration is an important routing feature in this regard. IoT uses two default routing protocols for this purpose: Objective Function Zero (OF0) Minimum Rank Hysteresis Objective Function (MRHOF), utilizing the hop-count and estimated transmission count as routing metrics respectively. However, both routing protocols do not have the capability to individually handle the growing demand for QoS routing services in application areas such as; medical, industrial and transportation. In order to address these problems, this paper proposes a new concept of combining the two routing protocols to perform as one. This means leveraging their advantages and discarding their disadvantages to guarantee optimum QoS in IoT applications. We implemented our routing protocol in a simulation environment. We recorded an increase in packet delivery ratio of more than 40% and a significant reduction in delay of 50% compared to the default routing protocols. Hence, our protocol indicates superior performance in terms of QoS compared to the standardized versions of the protocols.
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