Trade-off between Reliability and Energy Cost for Content-Rich Data Transmission in Wireless Sensor Networks
Trade-off between Reliability and Energy Cost for Content-Rich Data Transmission in Wireless Sensor Networks
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DOI：
10.1109/broadnets.2006.4374313
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发表时间：
2006-10
期刊：
影响因子：
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通讯作者：
Y. Charfi;N. Wakamiya;M. Murata
中科院分区：
文献类型：
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作者：
Y. Charfi;N. Wakamiya;M. Murata
在无线传感器网络中，能量受限的传感器节点的能量在很大程度上被数据通信任务耗尽。因此，设计节能的数据通信机制是最大化无线传感器网络寿命的关键。这一挑战对于视觉传感器网络来说更是雪上加霜，在视觉传感器网络中，收集和传输的数据往往非常大，并且由多个信号(红外信号、音频、视频等)组成。它们具有不同和变化的服务质量要求(QOS)。受这一挑战的启发，我们研究了无线传感器网络中多径数据传输的前向纠错恢复机制。基于该机制，我们提出了一种在端到端能量开销和多路径数据传输可靠性要求之间进行权衡的快速算法。在实际考虑固定传输功率和实际调制方案的情况下，我们推导了传输路径的可靠性和期望能量代价指标。然后通过仿真验证了算法的有效性，并讨论了下一步的工作。
In wireless sensor networks, the power of energy- constrained sensor nodes is largely drained by data communication tasks. Designing energy-efficient data communication mechanisms is, therefore, a major key to maximizing the life-time of wireless sensor networks. This challenge is magnified for visual sensor networks, where the collected and transmitted data is often very large and composed of multiple signals (Infrared signals, audio, video, ...) which have different and varying quality of service requirements (QoS). Motivated by this challenge, we investigate a forward error correction recovery mechanism for multi-path data transmission in wireless sensor networks. Based on this mechanism, we propose a fast algorithm for the trade-off between the end-to-end energy cost and reliability requirement of multi-path data transmission. Under the practical considerations of a fixed transmission power and a realistic modulation scheme, we derive the reliability and expected energy cost metrics of transmission paths. We then demonstrate the efficiency of our algorithm through simulations and discuss future work.