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延迟容忍传感器网络基于相对距离的数据传输
  • 期刊名称:软件学报,2010,21(3):490-504
  • 时间:0
  • 页码:490-504
  • 语言:中文
  • 分类:TP393[自动化与计算机技术—计算机应用技术;自动化与计算机技术—计算机科学与技术]
  • 作者机构:[1]电子科技大学计算机科学与工程学院,四川成都610054, [2]计算机软件与新技术国家重点实验室(南京大学),江苏南京210093
  • 相关基金:Supported by the National Natural Science Foundation of China under Grant Nos.60703114, 60673154, 60903158 (国家自然科学基金); the National Basic Research Program of China under Grant No.2006CB303000 (国家重点基础研究发展计划(973)); the National High-Tech Research and Development Plan of China under Grant No.2007AA01Z443 (国家高技术研究发展计划(863)); the Young Teacher Foundation of UESTC under Grant Nos.L08010601 JX0746, L08010601 JX0747 (电子科技大学校青年基金)
  • 相关项目:移动无线传感器网络动态覆盖与间歇连通路由的理论和算法研究
中文摘要:

延迟容忍移动无线传感器网络(delay tolerant mobile sensor network,简称DTMSN)用于广泛数据收集.一与传统的传感器网络不同,DTMSN具有节点移动性、间歇连通性并且能够容忍适当的延迟,因此传统传感器网络的数据收集算法不能适用.提出了一种基于相对距离感知的动态数据传输策略RDAD(relative distance-aware data deliveryscheme).RDAD采用传感器节点到汇聚点(sinknoae)的相对距离来计算节点传输概率的大小,并以此作为消息(message)传输时选择下一跳的依据,为优化复本管理,RDAD引入消息的生存时间ST(survival time)和消息最大复制数MR(maximal repljcation)决定队列中消息传递的优先顺序和丢弃原则.模拟实验表明,与现有的几种DTMSN数据传输算法相比,RDAD能够以较低的数据传输能耗和传输延迟获得较高的数据传输成功率,并且具有相对较长的网络寿命.

英文摘要:

The delay tolerant mobile sensor network (DTMSN) is a type of sensor network used for pervasive information gathering. DTMSN distinguishes itself from conventional sensor networks by several unique characteristics such as sensor mobility, loose connectivity, and delay tolerability. Therefore, traditional data gathering methods cannot be applied. In this paper, a novel data gathering method named relative distance-aware data delivery scheme (RDAD) is proposed. RDAD introduces a simple non-GPS method with small overhead to gain the relative distance from a node to sink and then to calculate the node delivery probability which gives a guidance to message transmission. RDAD also employs the message survival time and message maximal replication to decide message's transmission and dropping for minimizing transmission overhead. Simulation results have shown that the proposed RDAD data delivery scheme does not only achieve a relatively long network lifetime but also get the higher message delivery ratio with lower transmission overhead and data delivery delay than other DTMSN data delivering approaches.

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