Cooperative Data Buffering with Mobile Sinks for Wireless Multimedia Sensor Network
Cooperative Data Buffering with Mobile Sinks for Wireless Multimedia Sensor Network
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DOI：
10.2197/ipsjjip.18.96
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发表时间：
2010-03
期刊：
影响因子：
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通讯作者：
Yuta Takada;M. Bandai;T. Kitani;Takashi Watanabe
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文献类型：
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作者：
Yuta Takada;M. Bandai;T. Kitani;Takashi Watanabe
该文讨论了一种以视频监控为典型应用的容迟多媒体传感器网络（DTMSN）的缓冲策略。在DTMSN中，传感器节点观察周围的事件，并将数据存储在自己的缓冲存储器中。所有数据都被收集到水槽中。传感器节点对缓冲存储器以及电池容量有限制。整个数据的大小远远大于单个节点的内存大小。因此，开发一种满足这些限制的缓冲策略是DTMSN的关键问题。在本文中，我们提出了一种新的缓冲机制DTMSN称为合作缓冲（CB）。在所提出的CB中，具有大量数据的传感器节点与其邻居节点合作，以分布式方式缓冲数据。CB使用移动的汇。协作缓冲的数据在到达时直接发送到移动的信宿。在提出CB的基础上，讨论了易于汇聚的扩展，多源节点的扩展，以及Sink移动的一些Sink移动策略。通过理论推导和计算机仿真，对断路器的功耗性能进行了评估。因此，我们从结果表明，建议的CB可以处理多媒体数据，同时在低功耗下工作。
This paper discusses a buffering strategy for a delay-tolerant multimedia sensor network (DTMSN), whose typical application is video surveillance. In DTMSN, a sensor node observes events around it and stores the data in its own buffer memory. All the data is collected to the sink. Sensor nodes have restrictions on buffer memory as well as battery capacity. The entire data size is much larger than a single node's memory size. Thus, developing a strategy for buffering satisfying these restrictions is a critical issue for DTMSN. In this paper, we propose a novel buffering scheme for DTMSN called cooperative buffering (CB). In the proposed CB, the sensor node which has a large amount of data cooperates with its neighbor nodes to buffer the data in a distributed manner. CB uses mobile sinks. The cooperatively buffered data are transmitted directly to the mobile sink when it arrives. After proposing CB, this paper discusses extension for easy collection of the sink, extension for multi source nodes, and some sink mobility strategies of sink mobility. It evaluates the power consumption performance of CB via theoretical formulation and computer simulation. As a result, we show from the results that the proposed CB can handle multimedia data while operating at low-power.