PORT: a price-oriented reliable transport protocol for wireless sensor networks
PORT: a price-oriented reliable transport protocol for wireless sensor networks
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DOI：
10.1109/issre.2005.32
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发表时间：
2005-11
期刊：
影响因子：
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通讯作者：
Yangfan Zhou;Michael R. Lyu
中科院分区：
文献类型：
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作者：
Yangfan Zhou;Michael R. Lyu
在无线传感器网络中，为了获得可靠性和最小化能量消耗，一个动态的速率控制和拥塞避免传输方案是非常重要的。我们注意到，报告分组可能在不同程度上有助于接收器对其感兴趣现象的知识的保真度。因此，可靠性不能像在当前方案中考虑的那样简单地通过宿的总传入分组速率来衡量。此外，信源和信宿之间的通信成本可能不同，并且可能动态变化。基于这些考虑，我们提出了PORT(面向价格的可靠传输协议)来帮助Sink实现可靠性。在信宿必须获得足够的保真度以达到可靠性的约束下，Port通过两种方案来最小化能量消耗。一种是基于接收器的基于应用程序的优化方法，该方法反馈最佳报告率。另一种是根据下行通信条件反馈的局部最优路由方案。端口能够很好地适应通信条件的节能，同时保持必要的可靠性水平。一个应用案例的仿真结果证明了PORT的有效性
In wireless sensor networks, to obtain reliability and minimize energy consumption, a dynamic rate-control and congestion-avoidance transport scheme is very important. We notice that reporting packets may contribute to the sink's fidelity of its knowledge on the phenomenon of interest to different extents. Thus, reliability cannot simply be measured by the sink's total incoming packet rate as considered in current schemes. Also, communication costs between sources and the sink may be different and may change dynamically. Based on these considerations, we propose PORT (price-oriented reliable transport protocol) to facilitate the sink to achieve reliability. Under the constraint that the sink must obtain enough fidelity for reliability purpose, PORT minimizes energy consumption with two schemes. One is based on the sink's application-based optimization approach that feeds back the optimal reporting rates. The other is a locally optimal routing scheme according to the feedback of downstream communication conditions. PORT can adapt well to the communication conditions for energy saving while maintaining the necessary level of reliability. Simulation results in an application case study demonstrate the effectiveness of PORT