| 摘要: |
| 提出了一种基于选择复制的动态数据传输策略SRAD(selective replication-based adaptive data delivery scheme),基本思想是把消息(message)动态的复制给更有可能与汇聚点(sink node)通信的传感器节点.SRAD由数据传输和队列管理两个主要部分组成:前者根据Random Waypoint随机运动模型下不同时刻各传感器节点传输概率的大小进行数据消息的传输;后者通过消息的生存时间ST(survival time)值决定队列中消息传递的优先顺序和丢弃原则,以进一步降低网络传输能耗.模拟实验结果表明,与现有的几种DTMSN(delay tolerant mobile sensor networks)数据传输算法相比,SRAD的网络寿命相对较长,且它能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. |
| 关键词: 延迟容忍移动无线传感器网络 数据收集 动态数据传输 选择复制 队列管理 |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant Nos.60703114, 60673154, 60721002, 60825205 (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 Jiangsu Provincial High-Tech Research Project of China under Grant No.BG2007039 (江苏省高技术研究计划); the Young Scholar Foundation of the University of Electronic Science and Technology of China under Grant Nos.L08010601Jx0746, L08010601Jx0747 (电子科技大学青年基金) |
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| Selective Replication-Based Data Delivery for Delay Tolerant Mobile Sensor Networks |
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ZHU Jin-Qi,LIU Ming,GONG Hai-Gang,CHEN Gui-Hai,XU Fu-Long,SONG Chao
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| Abstract: |
| This paper proposes a data gathering method-SRAD (selective replication-based adaptive data delivery scheme). The main idea of SRAD is to replicate messages selectively to nodes that have higher probability to meet the sink. SRAD consists of two key components: data transmission and queue management. The former makes decisions on when and where to transmit data messages according to the node delivery probability in random waypoint mobility model. The latter based on the message survival time to decide message’s transmission and dropping to minimize the transmission overhead. Simulation results show that the proposed SRAD data delivery scheme cannot only have a relatively longer network lifetime but also a higher message delivery ratio with the lower transmission overhead and less data delivery delay than other DTMSN (delay tolerant mobile sensor networks) data delivering approaches. |
| Key words: DTMSN (delay tolerant mobile sensor networks) data gathering dynamic data delivery selective replication queue management |
