| 摘要: |
| 目标监测及其数据获取是物联网系统中最广泛的应用之一.监测网络中移动型目标会导致能够采集到目标资源的物联网节点不断改变，即资源的访问位置不断变化.因此，随着设备移动性的日益增长，动态资源的链接和数据访问方法已经成为影响物联网应用性能的一项关键技术.针对资源动态性导致的访问延时增加、响应率降低等问题提出了一种面向动态资源的物联网应用层协议Sealink.协议采用RESTful设计风格，使用URI描述动态资源，利用LSTM算法对动态资源的可访问位置进行预测建模，以此降低访问延时并提高请求响应率.实验结果表明，该协议能够降低访问动态资源的请求在物联网节点间的转发次数，与HTTP协议相比，平均能够减少75.5%的访问延时. |
| 关键词: 物联网 应用层协议 动态资源 web服务 预测 |
| DOI： |
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| IoT Application Layer Protocol for Dynamic Resources |
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LIAO Wei-Yuan1,2, LI Dong1, CUI Li1
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1.Insitute of Computong Technology, The Chinese Academy of Sciences, Beijing 100190, China;2.University of Chinese Academy of Sciences, Beijing 100049, China
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| Abstract: |
| Target monitoring and data acquisition is one of the most widely used applications in the Internet of Things system. Monitoring the mobile target in IoT will cause the IoT nodes that can capture the target resource, i.e., the access location of the resource, to change constantly. Therefore, with the increasing mobility of devices, dynamic resource linking and data access methods have become a key technology that affects the performance of IoT applications. This paper proposes an application-layer protocol, Sealink, for dynamic resources, which aims at addressing the issue of the increase of access delay caused by resource dynamics and the decrease of response rate. The protocol adopts RESTful design style, uses URI to describe dynamic resources, and uses LSTM algorithm to predict and model the accessible location of dynamic resources, thereby reducing access latency and improving request response rate. Experimental results show that Sealink can not only reduce the number of requests for accessing dynamic resources between IoT nodes, but also reduce the access latency by 75.5% on average compared with the HTTP protocol. |
| Key words: internet of things application-layer protocol mobile resource web service predict |
