Optimized Routing in Wireless Sensor Network for IoT

Wireless networks of battery-powered sensors with an event-driven wake-up function are becoming an increasingly important application area for Internet of Things (IoT).This paper analyzes the physical relation between the power consumption and the link utilization of wireless video sensor networks. We propose a multi-channel allocation and routing method for wireless multi-hop networks where each node generates event-driven video sensor data. Routing and channel allocation put a large impact on the battery life time of IoT sensors. We realistically analyze the power consumption model for a wireless link in terms of the distance and its utilization ratio. We then present an optimization formula of utilization-aware channel allocation and routing that minimizes the overall power consumption while transferring all the require data. We developed an efficient optimisation algorithm that accurately approximates the formula. A network simulator has been developed, which show that the proposed method can reduce the overall power consumption.