无线传感器网络中丢包重传的性能研究

Imeh J. Umoren, D. Asuquo, Onukwugha Gilean, Mfon Esang
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引用次数: 6

摘要

无线通信技术的最新进展使低成本传感器网络的发展成为可能,主要关注服务质量(QoS)的提供。无线传感器网络(WSNs)可用于各种应用领域,但每种应用都可能带来特殊的技术问题。基本上,我们证明了拥塞、丢包和延迟对WSNs的性能有很大的影响。为了实现一个现实的传感器网络策略,以解决数据延迟和避免导致丢包的碰撞问题,我们开发了一个系统,以保证在WSNs中的QoS使用模糊逻辑控制器(FLC)的灵敏度分析自适应前向纠错(AFEC)的效果。AFEC方法通过根据无线信道损耗的性质动态调整FEC来提高吞吐量,从而优化吞吐量、传感器功率利用率,同时最大限度地减少流量重传、误码率(BER)和能耗。基本上,评估的参数包括包的传输率、丢包率、延迟、错误率和吞吐量。该系统具有能够对节点的传输进行调度的扩展程序,以便具有从最远节点向融合中心收敛的数据流。该方案的主要优点是,经过使用实际现场数据的广泛模拟,该过程允许一种实用的方法来获得wsn中丢包重传问题的最优解,从而大大改善了QoS提供。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performability of Retransmission of Loss Packets in Wireless Sensor Networks
Latest progress in wireless communication technology has enabled the development of low-cost sensor networks with major concern on quality of service (QoS) provisioning. Wireless sensor networks (WSNs) can be adopted in various application domains but each use is likely to pose peculiar technical issues. Basically, we demonstrate that congestion, packet loss and delay have strong influence on the performance of WSNs. In order to implement a realistic sensor network policy to resolve the problem of data delay and avoidance of collisions that lead to packet losses, we develop a system that guarantees QoS in WSNs using Fuzzy Logic Controller (FLC) for sensitivity analysis of the effect of adaptive forward error correction (AFEC). The AFEC approach improves the throughput by dynamically tuning FEC subject to the nature of wireless channel loss thereby optimizing throughput, sensor power utilization, while minimizing traffic retransmission, bit error rate (BER), and energy consumption. Basically, parameters such as packet delivery ratio, packet loss, delay, error rate, and throughput are appraised. The system has a spread procedure which is able to schedule the transmission of the nodes in order to have a data flow that converges from the furthest nodes toward the fusion centre. The key benefit of the scenario showed that, after extensive simulation using realistic field data, the procedure permits a practical approach to obtaining optimal solution to loss packets retransmission problem in WSNs giving a strong improvement on QoS provisioning.
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