Application of IEEE802.11ac/n link throughput estimation model in holding access-point assignment algorithm for wireless local-area network

Currently, various types of access-points (APs) and hosts can be used in IEEE802.11n/ac wireless local-area networks (WLANs). Previously, we have studied the holding AP assignment algorithm to find an optimal assignment of the holding APs into the network field. Here, the 11n link throughput is obtained by using simple equations, and the 11ac link throughput is obtained by multiplying it with a constant value larger than 1, assuming the former link is faster than the latter one. Unfortunately, our experiments found that the 11ac link throughput is more quickly decreased as the link distance increases than the 11n. Thus, our algorithm may produce incorrect solutions in some cases. In this paper, we adopt the throughput estimation model for the 11ac/n link as the accurate estimation method in the holding AP assignment algorithm, and confirm the effectiveness of improving the total throughput performance through simulations in three instances using the WIMNET simulator.