Two-Tier WBAN/WLAN Healthcare Networks; Priority Considerations
In this paper, by bridging the IEEE 802.15.6-based WBANs and the IEEE 802.11e EDCA-based WLAN the authors develop a wireless healthcare network. They assign 8 WBAN User Priorities (UPs) to the WBAN nodes. By mapping the UPs into 4 WLAN Access Categories (ACs) they convey the medical data to the WLAN access point. They investigate the network performance under varying priority differentiation and number of nodes in the WLAN. They study the impacts of AC differentiation by Arbitrary Inter-Frame Space (AIFS) and Contention Window (CW) on the performance of WBAN and regular WLAN nodes. The results of this work indicate that differentiation by AIFS is more appropriate to preserve relative order of frame response times established in WBAN.