Prototype System Based Enhanced Scheduled Access Mechanism for WBAN

Yao Zhang, Changle Li, T. Luan, Yueyang Song, Xiaoming Yuan
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Abstract

Wireless Body Area Networks (WBANs) have attracted significant attentions because of their important role in medical applications with the development of requirements in health monitoring and diagnosis. IEEE 802.15.6, as the international standard for WBAN, supports network in operating on, in or around human body. Owing to the special propagation characteristics as affected by human body, WBAN needs reliable access mechanism to guarantee the stability of nodes access and information transmission. To achieve the high slot utilization rate and low average packet delay, we propose a gated scheduled access mechanism based on IEEE 802.15.6 and study the impact of allocation slot length on network performance. To examine the performance of our proposal, we conduct hardware experiment through a novel prototype system based on IEEE 802.15.6 standard. The experiment results show that the obtained optimal allocation slot length under the gated scheduled access mechanism can well satisfy the Quality of Service (QoS) requirements in different data rates, which is consistent with the results of theoretical analysis. The comparison results also show that our prototype system can be a practical reference in the future study of wireless body area network.
基于原型系统的WBAN增强型调度访问机制
随着健康监测和诊断需求的发展,无线体域网络(wban)在医学应用中的重要作用引起了人们的广泛关注。IEEE 802.15.6作为WBAN的国际标准,支持网络在人体上、人体内或人体周围运行。WBAN由于受人体影响的特殊传播特性,需要可靠的接入机制来保证节点接入和信息传输的稳定性。为了实现高的插槽利用率和低的平均分组延迟,我们提出了一种基于IEEE 802.15.6的门控调度访问机制,并研究了分配插槽长度对网络性能的影响。为了验证该方案的性能,我们通过基于IEEE 802.15.6标准的新型原型系统进行了硬件实验。实验结果表明,在门控调度访问机制下得到的最优分配时隙长度能够很好地满足不同数据速率下的服务质量(QoS)要求,与理论分析结果一致。对比结果也表明,该原型系统可为今后无线体域网络的研究提供实用参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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