基于TSCH的工业无线网络流量自适应传输调度机制研究  

Research on adaptive transmission scheduling mechanism of industrial wireless network traffic based on TSCH

作　　者：闫明月 裘莹 YAN Mingyue;QIU Ying(School of Information Science and Technology,Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江理工大学信息学院,杭州310018

出　　处：《智能计算机与应用》2024年第5期164-171,共8页Intelligent Computer and Applications

基　　金：国家自然科学基金青年科学基金项目(62003307)。

摘　　要：当今LLN网络设备要满足低功耗要求的同时必须支持多种业务数据的传输,所以需要一种动态调度算法提高网络的可靠性。虽然基于IEEE 802.15.4标准的时隙信道跳变(TSCH)技术可以满足LLN的需求,然而现有的TSCH调度算法缺少灵活性。为了解决这一问题,本文提出了基于TSCH的流量感知自适应调度改进算法(Enhanced Adaptive Transmission Scheduling Mechanism,EATSM)。本文通过自相似性采样方法采集各链路流量信息,在准确获取各个邻居链路流量之后进行按权按序为每个邻居链路分配时隙数量与位置,保证传输可靠性的同时又能做到调度灵活性。通过理论分析与实验数据对比,本文提出的EATSM调度算法设计相比较于主流自适应调度算法,数据包投递率为99.57%,提高了0.26个百分点,节点运行占空比为0.34%,减少了0.88个百分点。Today′s LLN network devices must support the transmission of multiple service data while meeting the requirements of low power consumption,so a dynamic scheduling algorithm is required to improve the reliability of the network.Although the Time-Slot Channel Hopping(TSCH)technology based on IEEE 802.15.4 standard can meet the needs of LLN,the existing TSCH scheduling algorithm lacks of flexibility.To solve this problem,this paper proposes the Enhanced Adaptive Transmission Scheduling Mechanism(EATSM)algorithm based on TSCH.In this paper,the self-similarity sampling method is used to collect the traffic information of each link,and after accurately obtaining the traffic of each neighbor link,the number and position of time slots are allocated to each neighbor link in order according to the weight,so as to ensure the reliability of transmission and achieve scheduling flexibility.Through theoretical analysis and experimental data comparison,compared with the mainstream adaptive scheduling algorithm,the proposed EATSM scheduling algorithm shows that the packet delivery rate is 99.57%,an increase of 0.26 percentage points,and the node operation duty ratio is 0.34%,a decrease of 0.43 percentage points.

关 键 词：LLN IEEE 802.15.4 TSCH 动态时隙调度 无线网络协议 

分 类 号：TN919.3[电子电信—通信与信息系统]