Sunghwa Son

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In this paper, we propose an adaptive tuning algorithm for wireless medical applications to in order to meet medical-grade quality of service (QoS). The conventional IEEE 802.11e protocol is designed to satisfy a certain level of QoS, which is insufficient for medical-grade QoS. In the proposed algorithm, we adaptively tune the AIFS value of the IEEE(More)
In this paper, we design an admission control mechanism on top of our previous study on medical-grade wireless LAN. The proposed admission control scheme controls the total number of real-time electrocardiogram (ECG) monitoring connections in order to guarantee the medical-grade quality of service. We verify the performance of the proposed scheme with ns-2(More)
In this paper, we propose a deadline-aware routing algorithm that considers a probabilistic delay constraint with a pre-specified deadline for cyber-physical systems (CPS). Most routing algorithms minimize a certain average performance metric such as mean delay. Whereas, our proposed routing algorithm can route traffic to maximize the probability reached(More)
In this paper, we deal with the problem of assuring medical-grade quality of service (QoS) for real-time medical applications in wireless healthcare systems based on IEEE 802.11e. Firstly, we show that the differentiated channel access of IEEE 802.11e cannot effectively assure medical-grade QoS because of priority inversion. To resolve this problem, we(More)
In this paper, we propose an adaptive tuning scheme of IEEE 802.11 WLAN for healthcare applications. Our proposed method can significantly improve medical-grade quality of service (QoS) and network performance at the same time. Though the conventional IEEE 802.11e protocol supports a certain level of QoS, it does not provide medical-grade QoS due to its(More)
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