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Wireless body area network (WBAN) solution is an emerging technology to resolve the small area connection issues around human body, especially for the medical applications. Based on the integrated superframe structure of IEEE 802.15.4, this paper proposes a modified medium access control (MAC) protocol for WBAN with focus on the simplicity, dependability and power efficiency. Considering the support...
IEEE 802.15.4 is a current major technology for low-rate low-power wireless networks. To study the applicability of IEEE 802.15.4 over a wireless body area network (WBAN), in this paper we evaluate its three different access schemes' performance through several metrics. Considering the coexistence of contention access period (CAP) and contention-free period (CFP), we also study the mutual influences...
IEEE 802.15.4 is a current major technology for low- rate low-power wireless personal area networks (WPANs). To study the reliability of its medium access control (MAC) function, in this paper we evaluate its packet dropping rate performance with focus on the reason to drop a packet. Considering the compatibility with the original protocol, when the access failure happens the packet isn't dropped...
Complementary WLAN and WPAN technologies, as well as other wireless technologies will play a fundamental role in the medical environments to support ubiquitous healthcare delivery. This paper investigates energy based carrier sensing and its impact on the coexistence of IEEE WLAN (802.11b) and WPAN (802.15.4) in the 2.4 GHz band. We derived closed-form expressions of energy based clear channel assessment...
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