Correlations among IoT, WSNs, M2M, and CPS

With the support of WSNs, radio frequency identification, pervasive computing technologies, network communication technologies, and distributed real-time control, CPS as an emerging advanced form of IoT is gradually becoming a reality. CPS applications have the potential to benefit from massive wireless networks and smart devices, some of which would allow CPS applications to provide intelligent services based on knowledge from the surrounding physical world. The characteristics of the several related terms are briefly described above. We outline the correlations among M2M, WSNs, CPS, and IoT, as shown in Table 1.1. The space formed by three axes (i.e., CPS, WSNs, and M2M) represents the IoT (see Figure 1.4). As time goes on, the development of WSNs and M2M will promote the CPS applications. Figure 1.5 shows the continuous evolution for IoT.