Title :
A Proposal of Access-Point Aggregation Approach for Multiple Wireless Local Area Networks
Author :
Funabiki, Nobuo ; Islam, Md Ezharul ; Nakanishi, Toru ; Watanabe, Kan
Author_Institution :
Dept. of Electr. & Commun. Eng., Okayama Univ., Okayama, Japan
Abstract :
With the advancement of communication technologies, multiple wireless local area networks (WLANs) have been often deployed in the same building for the Internet access services. Usually, their wireless access-points (APs) have been independently managed and operated by different groups such as departments or laboratories in a university or a company. Then, a WLAN user host can detect signals from multiple APs, which may increase the interference and the operation cost, and degrade the communication performance. As a result, the number of active APs should be minimized by aggregating the physical APs allocated in the field into limited ones by introducing virtual APs. In this paper, we define this AP aggregation problem for WLANs that aggregates the APs into the minimum number of active APs, and prove the NP-completeness of its decision problem. Then, we propose the heuristic algorithm that is composed of five phases. The effectiveness of our proposal has been verified through simulations in two instances.
Keywords :
Internet; communication complexity; radio access networks; wireless LAN; Internet access services; NP-completeness problem; WLAN; access-point aggregation; multiple wireless local area networks; virtual AP; wireless access-points; Heuristic algorithms; Internet; Load management; Organizations; Throughput; Wireless LAN; Wireless communication; Wireless local area network; access-point aggregation; algorithm; simulation; virtual access-point;
Conference_Titel :
Complex, Intelligent and Software Intensive Systems (CISIS), 2012 Sixth International Conference on
Conference_Location :
Palermo
Print_ISBN :
978-1-4673-1233-2
DOI :
10.1109/CISIS.2012.121