Multiple information collection by utilizing physical wireless parameter conversion sensor network (PHY-C SN)
Koji Kakinuma, Takeo Fujii · 2017
Wireless sensor network has recently attracted attention for realizing the advancement of infrastructure by wireless communication. Information collection in wireless sensor network is applied to various application such as home automation, smart grid, environmental monitoring and so on. However, it takes much time to collect information from multiple sensor nodes by packet communication. Physical wireless parameter conversion sensor network (PHY-C SN) has been studied in order to gather sensing information rapidly even if there are many sensor nodes in collection area. In PHY-C SN, the sensing information is converted to correspond subcarrier numbers of orthogonal frequency division multiplexing (OFDM) signals and the positional information is converted to time slot. Sensor nodes can transmit converted OFDM subcarrier simultaneously by using orthogonality of frequency. Therefore, easier and faster information collection can be realized in PHY-C SN. However, while there is a possibility to collect multiple kinds of sensing information in one wireless sensor network, only a kind of information collection in PHY-C SN has been studied. Thus, the method to collect multiple kinds of information fast in PHY-C SN is proposed in this paper. The effectiveness of the proposed method is evaluated by computer simulation.