Abstract
In this paper, we focus on the coexistence performance analysis of IEEE 802.15.6-based Wireless Body Area Network (WBAN) Cyber-Physical System (CPS) in the presence of IEEE 802.11-based Wireless Local Area Network (WLAN) operating in the same unlicensed spectrum. We derive the transmitting and collision probabilities of WBAN nodes analytically while taking the attempt probabilities of WLAN nodes into account to improve the channel access and proper coexistence of both networks. Along with that, we analyze throughput for both WBAN and WLAN individually. Furthermore, we formulate an optimization problem for maximizing the overall co-located system throughput by varying the channel access probabilities of WLAN and WBAN nodes while satisfying the Quality-of-Service (QoS) of both networks. From simulation results, it is evident that with proper payload tuning and channel access probability assignment the throughput of both coexisting network performances can be improved.
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