RPL based on triangle module operator for AMI networks

The routing protocol for low-power and lossy networks (RPL) has been used in advanced metering infrastructure (AMI) which could provide two-way communication between smart meters and city utilities. To improve the network performance of AMI networks, this paper proposed an improved algorithm of RPL based on triangle module operator (IAR-TMO). IAR-TMO proposes membership functions of the following five typical routing metrics: end-to-end delay, number of hops, expected transmission count (ETX), node remaining energy, and child node count. Moreover, IAR-TMO uses triangle module operator to fuse membership functions of these routing metrics. Then, IAR-TMO selects preferred parents (the next hop) based on the triangle module operator. Theoretical analysis and simulation results show that IAR-TMO has a great improvement when compared with two recent representative algorithms: ETXOF (ETX Objective Function) and OF-FL (Objective Function based on Fuzzy Logic), in terms of network lifetime, average end-to-end delay, etc. Consequently, the network performances of AMI networks can be improved effectively.