针对月面人机联合探测网络的节点备份机制  

Regarding the node backup mechanism of the lunar surface human⁃machine joint exploration network

作　　者：王博文 赵康僆[1] 叶言飞 李文峰[1] Wang Bowen;Zhao Kanglian;Ye Yanfei;Li Wenfeng(School of Electronic Sciences and Engineering,Nanjing University,Nanjing,210023,China)

机构地区：[1]南京大学电子科学与工程学院,南京210023

出　　处：《南京大学学报(自然科学版)》2024年第6期981-987,共7页Journal of Nanjing University(Natural Science)

基　　金：国家自然科学基金重点项目(62131012);移动通信技术重庆高校市级重点实验室开放研究项目(cqupt-mct-202203);中兴通讯委托技术预研项目(IA20230712005)

摘　　要：针对月面人机联合探测网络中因节点故障而出现的网络断连通问题,提出了一种分布式节点备份策略.结合月面任务的特殊性及其组网方式,对月面人机联合探测网络建模,将网络中的行为体分类,并对节点行为做出约束.为了减少每个节点维护的信息开销,节点通过两跳邻居信息来判定临界点,临界点使用一条邻居信息和Hello报文信息依据节点类型、恢复开销和对网络影响的程度等原则来选择备份节点.在故障恢复时考虑节点任务的独立性,使用故障传递策略抵消宇航员节点的移动责任.实验表明该节点备份机制可以在网络中有冗余节点的情况下为每个关键节点生成一个备份恢复路径,并且能够在不移动宇航员节点的前提下使网络恢复连通.This article proposes a distributed node backup strategy to address the network disconnection issue caused by node failures in the lunar surface human‐machine joint exploration network.Firstly,considering the unique characteristics of lunar missions and their networking methods,we model the lunar surface human‐machine joint exploration network by categorizing the behaviors in the network and imposing constraints on the node behaviors.To reduce the information overhead maintained by each node,critical points are determined by two‐hop neighbor information,and the critical points select backup nodes based on principles such as node type,recovery cost,and impact on the network using one‐hop neighbor information and Hello message information.When recovering from failures,the independence of node tasks is considered,and a fault propagation strategy is used to offset the responsibility of moving astronaut nodes.Experiments demonstrate that this node backup mechanism can generate a backup recovery path for each critical node in the network with redundant nodes,and can reconnect the network without moving astronaut nodes.

关 键 词：月面人机联合探测 网络连通性 备份机制 分布式恢复 节点重定位 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]