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基于窄带物联网的信息压缩存储方法 被引量:2
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作者 桑振 胡建 《计算机仿真》 北大核心 2023年第9期426-430,共5页
为解决大数据集冗余过大和有效存储时面临存储空间不足的问题,提出基于窄带物联网的信息压缩存储方法。首先使用移动采集感知层中的智能终端采集装置获取所需信息,然后利用窄带物联网将所得信息传输到网络层的LoRa网关汇聚节点,由汇聚... 为解决大数据集冗余过大和有效存储时面临存储空间不足的问题,提出基于窄带物联网的信息压缩存储方法。首先使用移动采集感知层中的智能终端采集装置获取所需信息,然后利用窄带物联网将所得信息传输到网络层的LoRa网关汇聚节点,由汇聚节点负责整合接收到的信息,并将整合结果传输到应用层。应用层中的压缩存储模块运用了规范Hadamard矩阵,将接收到的信息压缩存储至数据库中,用户通过管理计算机可操作数据库内信息并查看返回结果。实验结果表明,上述的信息压缩时间和解压时间比方法使用前节约50%以上,且信息压缩比始终介于75%-90%之间;上述方法能在保留信息高度密集区域基本特征临界信息的同时,有效节约了信息存储空间。 展开更多
关键词 窄带物联网 信息压缩存储 移动采集感知 网络层 应用层
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A Secure-Efficient Data Collection Algorithm Based on Self-Adaptive Sensing Model in Mobile Internet of Vehicles 被引量:1
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作者 LIANG Wei RUAN Zhiqiang +1 位作者 TANG Mingdong LI Peng 《China Communications》 SCIE CSCD 2016年第2期121-129,共9页
Existing research on data collection using wireless mobile vehicle network emphasizes the reliable delivery of information.However,other performance requirements such as life cycle of nodes,stability and security are ... Existing research on data collection using wireless mobile vehicle network emphasizes the reliable delivery of information.However,other performance requirements such as life cycle of nodes,stability and security are not set as primary design objectives.This makes data collection ability of vehicular nodes in real application environment inferior.By considering the features of nodes in wireless IoV,such as large scales of deployment,volatility and low time delay,an efficient data collection algorithm is proposed for mobile vehicle network environment.An adaptive sensing model is designed to establish vehicular data collection protocol.The protocol adopts group management in model communication.The vehicular sensing node in group can adjust network sensing chain according to sensing distance threshold with surrounding nodes.It will dynamically choose a combination of network sensing chains on basis of remaining energy and location characteristics of surrounding nodes.In addition,secure data collection between sensing nodes is undertaken as well.The simulation and experiments show that the vehicular node can realize secure and real-time data collection.Moreover,the proposed algorithm is superior in vehicular network life cycle,power consumption and reliability of data collection by comparing to other algorithms. 展开更多
关键词 wireless vehicle network datacollection protocol network sensing chain self'-adaptive sensing sensing distance threshold.
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