Wireless body area network is a promising technology that brings healthcare to a new level of personalization. The applications of wireless body area network are not limited to healthcare monitoring applications but vastly used in entertainment applications. The applications are emerging at a fast pace and attract the attention of researchers. IEEE 802.15.6 provides a communication standard which specifies the physical layer and media access control layer operations for wireless body area networks. A fixed superframe structure is used for handling of heterogeneous traffics of wireless body area networks through pre-defined user priorities. This leads to inefficient use of superframe time duration because of fixed time phases for different types of data traffic. In this article, a novel group-based classification of traffic is introduced to avoid contention and inefficient use of superframe duration. A group-based media access control is developed to adjust the superframe duration according to high priority traffic whereas the rest of the traffic is controlled using node-based buffering. The experimental results showed that the proposed media access control outperformed adaptive beaconing medium access control and priority media access control, in terms of stability period, delay, throughput, transmission loss, and residual energy.

中文翻译：

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使用基于组的媒体访问控制的动态超帧自适应处理无线体域网中的流量异构

无线体域网是一项很有前途的技术，它将医疗保健提升到一个新的个性化水平。无线体域网的应用不仅限于医疗监控应用，还广泛用于娱乐应用。应用程序正在快速出现并吸引了研究人员的注意。IEEE 802.15.6 提供了一种通信标准，该标准规定了无线体域网的物理层和媒体访问控制层操作。固定超帧结构用于通过预定义的用户优先级处理无线体域网的异构流量。由于不同类型数据流量的固定时间阶段，这导致超帧持续时间的低效使用。在本文中，引入了一种新的基于组的流量分类，以避免争用和超帧持续时间的低效使用。开发了基于组的媒体访问控制，以根据高优先级流量调整超帧持续时间，而其余流量则使用基于节点的缓冲进行控制。实验结果表明，所提出的媒体访问控制在稳定期、延迟、吞吐量、传输损耗和剩余能量方面优于自适应信标媒体访问控制和优先媒体访问控制。