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首页> 外文期刊>Journal of medical systems >Performance Analysis of IEEE 802.15.6 CSMA/CA Protocol for WBAN Medical Scenario through DTMC Model
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Performance Analysis of IEEE 802.15.6 CSMA/CA Protocol for WBAN Medical Scenario through DTMC Model

机译：通过DTMC模型对WBAN医疗场景的IEEE 802.15.6 CSMA / CA协议进行性能分析

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摘要

The newly drafted IEEE 802.15.6 standard for Wireless Body Area Networks (WBAN) has been concentrating on a numerous medical and non-medical applications. Such short range wireless communication standard offers ultra-low power consumption with variable data rates from few Kbps to Mbps in, on or around the proximity of the human body. In this paper, the performance analysis of carrier sense multiple access with collision avoidance (CSMA/CA) scheme based on IEEE 802.15.6 standard in terms of throughput, reliability, clear channel assessment (CCA) failure probability, packet drop probability, and end-to-end delay has been presented. We have developed a discrete-time Markov chain (DTMC) to significantly evaluate the performances of IEEE 802.15.6 CSMA/CA under non-ideal channel condition having saturated traffic condition including node wait time and service time. We also visualize that, as soon as the payload length increases the CCA failure probability increases, which results in lower node's reliability. Also, we have calculated the end-to-end delay in order to prioritize the node wait time cause by backoff and retransmission. The user priority (UP) wise DTMC analysis has been performed to show the importance of the standard especially for medical scenario.
机译：新起草的用于无线体域网（WBAN）的IEEE 802.15.6标准一直专注于众多医疗和非医疗应用。这种短距离无线通信标准可在人体附近，周围或附近以极低的功耗提供可变的数据速率，范围从几Kbps到Mbps。本文针对吞吐量，可靠性，畅通信道评估（CCA）失败概率，丢包概率和结束速率，基于IEEE 802.15.6标准的载波侦听多路访问避免冲突（CSMA / CA）方案的性能分析。端到端的延迟已经提出。我们已经开发了离散时间马尔可夫链（DTMC），以显着评估在具有节点等待时间和服务时间等饱和流量条件的非理想信道条件下IEEE 802.15.6 CSMA / CA的性能。我们还可以看到，一旦有效载荷长度增加，CCA故障概率就会增加，这将导致较低的节点可靠性。另外，我们已经计算了端到端延迟，以便优先考虑由退避和重传导致的节点等待时间。进行了用户优先级（UP）明智的DTMC分析，以显示该标准的重要性，尤其是在医疗场景中。

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