基于相遇时长的时延容忍路由
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2018年度河南省重大科技专项资助项目(182102210100)

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Contact duration-based routing in delay-tolerant networks
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    摘要:

    移动用户和无线设备终端已成为大量数据的源节点。在如此数据密集型的移动的无线通信网络中,时延容忍网络(DTNs)在数据路由、分发和收集阶段扮演着重要作用。为此,提出基于相遇时长的时延容忍路由(CDR)。先分析了数据密集型路由问题:仅凭一次相遇机会无法完成大数据量的传输。再通过相遇频率、相遇时长和缓存区的可用空间三项信息,计算路径的权重,将具有最大权重的路径作为最短路径,并依此路径传输数据。仿真结果表明,相比于等待路由(SW),CDR路由有效地提高了数据包传递率。

    Abstract:

    Mobile users and wireless devices are now the sources of a large volume of data. In such data-intensive mobile and wireless computing systems, Delay-Tolerant Network(DTN) routing plays a critical role in data routing, dissemination, and collection. Therefore, Contact Duration-based Routing (CDR) is proposed in this paper. A new routing problem that the transmission of large volume of data cannot be completed in one contact is introduced ?rstly for data-intensive routing. Then the weight of the path is calculated by three kinds of information including contacting frequency, contacting duration and the available space of the cache area. Taking the path with the maximum weight as the shortest path, data is transmitted according to this path. Simulation results show that compared with Spray-and-Wait(SW) routing, CDR routing can effectively improve packet delivery rate.

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周 峰,刘 珂.基于相遇时长的时延容忍路由[J].太赫兹科学与电子信息学报,2021,19(6):1108~1113

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  • 收稿日期:2019-10-10
  • 最后修改日期:2020-04-21
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  • 在线发布日期: 2021-12-31
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