An Improved RPL Algorithm for Low-Power and Lossy Networks

作     者：Yanan Cao Hao Yuan Yanan Cao;Hao Yuan

作者机构：Tianjin Key Laboratory of Wireless Mobile Communications and Power TransmissionTianjin Normal UniversityTianjin 300387China Chinese People’s Liberation Army Unit 61846Zhuozhou 07250China 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2023年第20卷第1期

页      面：140-152页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 

基　　金：supported by Doctoral Research Project of Tianjin Normal University 52XB2101 

主　　题：routing protocol RPL routing metric lexical method objective function 

摘      要：The routing protocol for low-power and lossy networks(RPL),standardized by Internet Engineering Task Force(IETF),is mainly designed to use for Low-power and Lossy Networks(LLNs).To solve the problems of several important routing metrics are not evaluated,the optimal path may contain long single hop links,lack of scientific multi-routing metrics evaluation method and mechanism to balance the parent child number(especially the parent with one hop away from root),this paper proposes an improved RPL algorithm for LLN(I-RPL).First of all,we propose the evaluated routing metrics:child number of parent,candidate parent number,hop count,ETX and energy consumption ***,we improve the path ETX calculation method to avoid selecting optimal path containing long single hop *** we design a novel lexical method to synthetically evaluate candidate ***,based on the evaluation results of candidate parents,we design a novel objective function and a new calculation node rank method which can also be used for selecting the optimal ***,evaluation results show that I-RPL outperforms ETXOF and several other improvements in terms of packet delivery ratio,latency,etc.