Improving Energy Efficiency and Reliability in WuR-Based IoT Systems: An Error Correction Approach

Intelligent connected objects, the building blocks of IoT, represent battery supplied electronic devices. These devices are expected to be deployed in very large numbers, and manual replacement of their batteries will severely restrict their large-scale or wide area deployments. Therefore, energy efficiency is of the utmost importance in the design of the IoT devices. The wireless communication between the distributed sensor devices and the host stations can consume significant energy, even more when larger coverage is required. Ultra-low-power wake up radio (WuR) represent one of the most prominent solutions for energy efficiency in IoT. However, the WuR devices have several limitations that bound their practical applicability and usage, such as short range capabilities and low signal sensitivity. As a result, the WuR devices commonly misinterpret their wake up address and inevitably lead to overall performance degradation of the system. This work, introduces the concept of error correction codes in the wake up address. It is envisioned that the error correction codes can increase the overall robustness and sensitivity of the WuR devices. The work also analyses the potential energy efficiency gains and the energy-latency tradeoff degradation of the WuR based IoT system when utilizing the error correction codes.