Electromagnetic radiation-aware routing algorithm

Human exposure to radio-frequency energy is currently a cause of concern since electromagnetic signals are becoming ubiquitous within home environment. Though no scientific study has yet proven direct and hazardous effects of radio-frequency energy, research community advocates the application of the precautionary principle in order to reduce radio-frequency exposure whenever possible. Innovative routing solution has therefore to consider this as an additional constraint in conjunction with QoS criteria. In this regard, we address, in this paper, radiation exposure issues in home network or more generally in wireless networks. We propose first a new electromagnetic radiation-aware routing metric that can fit any shortest path algorithm to carry data away from a radiationsensitive area (hot spot). The main goal is to minimize cumulative radio-frequency exposure per packet in the vicinity of a given area. Subsequently, we prove that the Electromagnetic Radiation- Aware Routing Algorithm (EMRARA) can achieve better levels of cumulative electromagnetic radiation exposure compared to existing routing algorithms. We integrated as well a multi-criteria shortest path algorithm which assesses and optimizes jointly three metrics.