Robust Optimal Selection of Radio Type and Transmission Power for Internet of Things

Abstract

Research efforts over the last few decades produced multiple wireless technologies, which are readily available to support communication between devices in various dynamic Internet of Things (IoT) and robotics applications. However, single radio technology can hardly deliver optimal performance across all critical quality of service (QoS) dimensions under the typically varying environmental conditions or under varying distance between communicating nodes. Using a single wireless technology therefore falls short of meeting the demands of varying workloads or changing environmental conditions. Instead of pursuing a one-radio-fits-all approach, we design ARTPoS , an Adaptive Radio and Transmission Power Selection system, which makes available at runtime multiple wireless technologies (e.g., WiFi and ZigBee) and selects the radio(s) and transmission power(s) most suitable for the current conditions and requirements. The principal components of ARTPoS include new empirical models of power consumption and packet reception ratio (the latter can also be refined online) and online optimization schemes. We have implemented our system and evaluate it on the physical testbed consisting of our new embedded platforms with heterogeneous radios. Experimental results show that ARTPoS can significantly reduce the power consumption, while maintaining desired link reliability, compared to standard baselines.

Wi-BLE: On cooperative operation of Wi-Fi and Bluetooth low energy under IPv6

“…However, the high speed mode gives up exploiting the feature of Wi-Fi's long transmission range and does not have a clear advantage over Wi-Fi Direct, not implemented on most offthe-shelf BLE devices. ARTPoS [33] determines when to use BLE, ZigBee, or Wi-Fi for minimizing transmission power while satisfying a given reliability constraint. However, this scheme does not consider data-rate differences between the three radios, not fully utilizing Wi-Fi's high data rate and large packet size.…”