Wireless Measurement Framework to Survey an Area with Required Communication Quality

It is important for ubiquitous networks to survey a wireless area with required communication quality, i.e., communication quality required by an application. However, communication quality of wireless networks dynamically changes depending on various invisible factors. Nor can their influence be accurately estimated beforehand. Thus, actual wireless measurement is unavoidable. Existing wireless measurement methods are mainly based on the effort of network engineers. If wireless networks become larger in scale, like a metropolitan area, how do they carry out an accurate and effortless survey of the whole wireless network? When can they complete such a laborious task? Furthermore, the invisible factors chiefly depend on a propagation path between a user and a base station (BS), i.e., they depend on a user´s location. Hence, we need to perform a wireless measurement at each point in wireless networks. In our research, we will attempt to effortlessly, and continuously conduct detailed wireless measurement over wireless networks. The difficulty of achieving such wireless measurement is continuously conducting detailed wireless measurement of the whole wireless network without burdening engineers. As a first step, in this paper, we focus on the measurement framework of each BS. In our framework, a BS measures communication quality of multiple layers at each position from users´ active traffic. Since users are distributed over a wireless area, a BS can obtain communication quality in its own wireless area by making a map between communication quality and geographical location, called a quality map. Then, we evaluate the accuracy of the quality map and investigate the characteristics of the quality map depending on configurable parameters through simulation experiments.