Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

A User Application-Based Access Point Selection Algorithm for Dense WLANs



Munsuk Kim, Ye Na Kim, Sukyoung Lee, Nada T. Golmie, SeungSeob Lee


The current commercial access point (AP) selection schemes are mostly based on signal strength, but perform poorly in many situations because they ignore the actual load distributions among the APs. To address this shortcoming, a number of alternative schemes that consider the current utilizations and achievable throughputs of APs have been proposed. However, most of them introduce additional latency or battery consumption overheads while communicating with either a certain centralized server or the APs. In this paper, we propose a user-centric AP selection (UCAS) scheme, in which a mobile phone automatically measures and stores the achievable throughputs of the APs that the user utilizes in frequently visited places, and employs this learning information when the user revisits the places, to choose an appropriate AP. We effectively mitigate the learning overheads by utilizing the throughputs of active applications running in the user’s mobile phone, and improve the learning accuracy by considering the traffic characteristics of the applications classified based on the supervised machine-learning technique. Using a measurement study of APs in real dense wireless local area network (WLAN) environments, we show that our UCAS scheme chooses an AP with a better achievable throughput, over the previous AP selection approaches.
PLoS One


Access point (AP) selection, application traffic classification, dense wireless local area network (WLAN)


Kim, M. , , Y. , Lee, S. , Golmie, N. and Lee, S. (2019), A User Application-Based Access Point Selection Algorithm for Dense WLANs, PLoS One, [online], (Accessed April 23, 2024)
Created January 16, 2019, Updated February 15, 2019