Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (11): 3390-3398.doi: 10.12305/j.issn.1001-506X.2021.11.40

• Communications and Networks • Previous Articles     Next Articles

Efficient routing path finding algorithm based on mobile node neighbor detection in LLN

Yukun YAO1,2,*, Liang HE1,2, Zhi REN1,2, Weizheng LI1,2, Jiaqi ZHOU1,2   

  1. 1. School of Communication and Inforation Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
    2. Chongqing Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2020-11-27 Online:2021-11-01 Published:2021-11-12
  • Contact: Yukun YAO

Abstract:

Aiming at the problems such as unreasonable selection of mobile node (MN) alternative parent node set in low power lossy networks (LLN) mobility support routing algorithm, untimely MN pathfinding and single routing measurement under medium-speed scenarios with obstacles, the highly efficient MN neighbor detection based pathfinding protocol for LLN (NDM-RPL) in medium-speed scenarios is proposed.A link quality detection mechanism is proposed to calculate the safe threshold and risk threshold so that MN can timely find the next parent node (NPN).Secondly, a father-parent selection objective function based on coefficient of variation is proposed. MN selection NPN is selected based on multiple measurements.Finally, the monitoring preselection mechanism is proposed to solve the problem of unreasonable selection of alternative parent node set.Theoretical analysis and simulation results show that the performance of NDM-RPL algorithm in MN energy consumption and control cost has been improved effectively.

Key words: preset threshold, neighbor detection, monitor preselection, coefficient of variation, medium-speed scenario

CLC Number: 

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