Minimizing the impact of the handover for mobile users in WLAN: A study on performance optimization
2016 (English)In: Computer Networks, ISSN 1389-1286, E-ISSN 1872-7069Article in journal (Refereed) In pressText
IEEE 802.11 based Wireless LANs are an important piece in today’s communication infrastructure in order to provide high speed wireless Internet access to static or quasi mobile users. For large WLAN deployments (i.e., Campus or enterprise WLAN), it is important to understand the impact of user mobility and handovers on the system performance. In this article, we have developed a performance model for a set of networked 802.11 based WLAN Access Points, which is based on a Mixed Integer Linear Program (MILP). The objective function tries simultaneously to maximize the total system rate while at the same time minimizing the number of handovers for a configurable handover signaling rate. Because of the conflicting nature of the two objective functions, such multi-objective optimization is difficult to explore. A detailed evaluation of the model using several scenarios involving both different numbers of static and mobile users shows that our formulation allows trading off those two objectives in a robust way.
Place, publisher, year, edition, pages
Broadband networks; Integer programming; Standards, Communication infrastructure; Handover; High speed wireless; IEEE 802.11s; MILP; Minimizing the number of; Mixed integer linear program; Performance optimizations, Multiobjective optimization
Research subject Computer Science
IdentifiersURN: urn:nbn:se:kau:diva-42354DOI: 10.1016/j.comnet.2016.03.014ScopusID: 2-s2.0-84962875286OAI: oai:DiVA.org:kau-42354DiVA: diva2:933863