计算机工程

• 移动互联与通信技术 • 上一篇    下一篇

RPL路由协议的研究与改进

俞柯,王慧锋   

  1. (华东理工大学 信息科学与工程学院,上海 200237)
  • 收稿日期:2017-01-12 出版日期:2018-03-15 发布日期:2018-03-15
  • 作者简介:俞柯(1993—),男,硕士研究生,主研方向为无线传感器网络;王慧锋,教授。
  • 基金项目:
    赛尔网络下一代互联网技术创新项目(NGII20150304)。

Study and Improvement of RPL Routing Protocol

YU Ke,WANG Huifeng   

  1. (School of Information Science and Engineering,East China University of Science and Technology,Shanghai 200237,China)
  • Received:2017-01-12 Online:2018-03-15 Published:2018-03-15

摘要: RPL路由协议在非存储模式下大量通告对象消息聚积,导致网络拥塞,并且转发过程中占用节点缓冲区。针对上述问题,提出一种改进路由协议。通过向子节点发送后向压力消息及时调整DelayDAO定时器的值,从而控制中间节点对DAO消息的转发,利用现有节点的多频特性,在物理上隔离控制信息报文和数据包。实验结果表明,相比于传统低功耗有损网络路由协议的非存储模式,该协议节省了节点缓冲区占用的空间,减少了网络的拥塞和数据包传递过程中的掉包现象。

关键词: 路由协议, 非存储模式, DelayDAO定时器, 控制信息, 缓冲区占用, 丢包

Abstract: RPL routing protocol in non-storage mode,congestion will be caused by accumulation of a large number of Destination Advertisement Option(DAO) and intermediate nodes need larger buffer to store DAO before relaying to their parents.Regarding the issue above,an improved algorithm for RPL routing protocol is proposed,which adjusts the DelayDAO timers by sending the backward pressure message to its children.Thus,controlling the generation and relaying of DAO messages.At the same time,using the multi-frequency characteristics of many existing nodes,the control information messages and data packets are physically isolated.The experiment and analysis show that compared with the traditional non-storage mode of RPL routing protocol,the improved routing protocol reduces the buffer occupancy,and also reduces the network congestion and packet loss during data packet transmission.

Key words: routing protocol, non-storage mode, DelayDAO timer, control information, buffer occupancy, packet loss

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