Binary Tree Routing for Parallel Data Gathering in Sensor Networks of Smart Home

With advances in consumer electronics and wireless communications, wireless sensors will be placed everywhere in future’s smart home to provide the safety and convenience for consumers. A PC connected with a Base Station (BS) will work as a control center for gathering and handling the data sensed from physic environment in the home. Because of the network area of approximately 20m×20m in the home, transmitting distance is no longer important. Directly transmitting data to BS consumes less energy than any other energy-efficient protocols. However, high delay is one of the most important problems produced by direct transmitting. This paper proposes Binary Tree Routing Protocol (BTRP) to reduce delay in the networks of smart home. BTRP is proved to be the optimal tree routing protocol by evaluating the performance of the networks with energy×delay metric. Simulation results show BTRP outperforms traditional direct routing and two-hop routing in terms of lifetime/delay metric.