| 摘 要: 低功耗有损网络(Low-power and Lossy Network, LLN)的RPL(无线传感网络)路由协议因其适用资源受限的网络而受到关注。为了研究如何通过优化目标函数(Objective Function, OF)提高资源利用率，回顾和梳理近几年相关文献中提出的设计方案，从路由度量的角度归纳了两类优化思路，并论述了不同方案的优势与不足之处。研究结果显示，尽管多数针对路由指标的优化可以改善网络质量，均衡能耗，但存在性能指标检测不全、受到环境约束、可拓展性低等问题。针对以上问题，总结了三个无线传感网络路由优化方面值得被关注的要点，期望能为该领域的研究人员提供优化思路。 |
| 关键词: 低功耗有损网络；RPL；目标函数；路由度量 |
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中图分类号: TP393
文献标识码: A
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| Review of RPL Objective Function Research in Low-power and Lossy Network |
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WANG Zhiqun1,2, ZHOU Xin1, ZHANG Bo1, ZHU Minghe1
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( 1.College of Information Engineering, Huzhou University, Huzhou 313000, China ;
2.College of Science and Engineering, Huzhou College, Huzhou 313000, China)
hwzq@zjhu.edu.cn; zhouxin19970322@163.com; 349794465@qq.com; 635532370@qq.com
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| Abstract: RPL (Routing Protocol, a wireless sensor network) for Low-power and Lossy Network (LLN) has received attention because of its applicability to resource-constrained network. In order to study how to improve the resource utilization by optimizing the Objective Function (OF), this paper proposes to review and sort out the design schemes proposed in the related literature in recent years, summarize two types of optimization ideas from the perspective of routing metrics, and discuss the advantages and shortcomings of different schemes. The results show that although most of the optimization for routing metrics can improve network quality and balance energy consumption, there are problems such as incomplete detection of performance metrics, environmental constraints, and low scalability. To address the above issues, three key points of wireless sensor network routing optimization that deserve attention are summarized, which are expected to provide optimization ideas for researchers in this field. |
| Keywords: low-power and lossy network; RPL; objective function; routing metric |
