Title :
A mixed queueing network model of mobility in a campus wireless network
Author :
Chen, Yung-Chih ; Kurose, Jim ; Towsley, Don
Author_Institution :
Univ. of Massachusetts, Amherst, MA, USA
Abstract :
Although wireless networks have become ubiquitous, surprisingly few models of user-level mobility have been developed and validated against traces of measured user behavior. In this paper, we develop and validate a simple mixed queueing network model of user mobility among access points in a campus network. We identify two classes of users, an open and a closed class, corresponding to mobile users that visit the network for a short time before departure, and users that are always resident in the network during the observation period. Using CRAWDAD traces of user-access-point affiliation over time, we compare model-predicted performance with the performance actually observed in the traces, and find that such a mixed queueing model can indeed be used to accurately predict a number of performance measures of interest.
Keywords :
mobility management (mobile radio); queueing theory; CRAWDAD traces; campus wireless network; closed-class user; mixed queueing network model; mobile users; model-predicted performance; open-class user; user-access-point affiliation; user-level mobility; Analytical models; Data models; Exponential distribution; Mobile communication; Predictive models; Servers; Wireless networks;
Conference_Titel :
INFOCOM, 2012 Proceedings IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-0773-4
DOI :
10.1109/INFCOM.2012.6195673