Dynamic Tree Routing Protocol DTR in Zigbee based Wireless Sensor Network

In many wireless sensor network applications like forest fire detection and environment monitoring, battery powered sensors are often randomly distributed in monitoring area, and data packets are usually sent from those sensors toward network s main coordinator which acts as a gateway to the monitoring center. Considering such network routing requirements, and the limited sensor energy, we proposed our Dynamic Tree Routing Protocol (DTR), which is an improved version of Modified Zigbee Hierarchical Tree Routing Protocol (MZBR), this protocol dynamically distributes trafficto coordinator in each hop according to specific quality factor depends on the depth, Link Quality Indicator (LQI), and the remaining energy of receiving sensor. The simulation results obtained from Network Simulator Version 2 (NS2) showed better distribution of energy consumption and improvement in network lifetime, while keeping good packet delivery ratio and end to end delay compared with On Demand Distance Vector AODV and Modified Zigbee Hierarchical Tree Routing MZBR Protocols.