| Abstrakt: |
Sensors in an internet of things (IoT) network are energy-consuming devices and they operate on batteries that have limited energy capacity. This issue impacts the network lifetime. One of the promising solutions for this problem is simultaneous wireless information and power transfer (SWIPT). In SWIPT, a receiver node harvest the energy by itself based on the quantity of RF signal. When the transmitted RF signal becomes weak, the receiver node not able to forward the information to the next node due to not sufficient harvested energy. It can reduce network performance. Here, we propose a new SWIPT mechanism called as hybrid SWIPT (H-SWIPT) to enhance the harvesting energy at which the receiver node not only depends upon the previous node's RF signal but also depends on the neighbor node's RF signal, sink broadcast energy, and co-channel interference. Furthermore, to minimize the total energy consumption of the path a new routing metric is introduced. Based on this, it will select the minimized energy cost path from source to destination. The network performance is evaluated in terms of energy cost and aggregative energy cost and compared with existing schemes: information transmission (IT) & power splitting protocol based SWIPT (SWIPT-PS). From the results, for varying node count, the average energy cost is observed as 5.9mW, 5.433mW, and 4.7mW for IT, SWIPT-PS &H-SWIPT respectively. [ABSTRACT FROM AUTHOR] |
