An Improved Algorithm of RPL Based on Triangle Module Operator for AMI Networks

Yanan CAO  Muqing WU  

IEICE TRANSACTIONS on Communications   Vol.E101-B    No.7    pp.1602-1611
Publication Date: 2018/07/01
Publicized: 2018/01/22
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2017CQP0001
Type of Manuscript: Special Section PAPER (Special Section on Communication Quality in Wireless Networks)
routing protocol,  RPL,  triangle module operator,  membership function,  objective function,  

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Advanced metering infrastructure (AMI) is a kind of wireless sensor network that provides two-way communication between smart meters and city utilities in the neighborhood area of the smart grid. And the routing protocol for low-power and lossy network (RPL) is being considered for use in AMI networks. However, there still exist several problems that need to be solved, especially with respect to QoS guarantees. To address these problems, an improved algorithm of RPL based on triangle module operator named as TMO is proposed. TMO comprehensively evaluates routing metrics: end-to-end delay, number of hops, expected transmission count, node remaining energy, and child node count. Moreover, TMO uses triangle module operator to fuse membership functions of these routing metrics. Then, the node with minimum rank value will be selected as preferred parent (the next hop). Consequently, the QoS of RPL-based AMI networks can be guaranteed effectively. Simulation results show that TMO offers a great improvement over several the most popular schemes for RPL like ETXOF, OF-FL and additive composition metric manners in terms of network lifetime, average end-to-end delay, average packet loss ratio, average hop count from nodes to root, etc.