DocumentCode :
2031997
Title :
Multiobjective optimization of service delivery over a heterogeneous wireless access system
Author :
Fortuna, Carolina ; Mohoreie, M. ; Filipie, B.
Author_Institution :
Dept. of Commun. Syst., Jozef Stefan Inst., Ljubljana, Slovenia
fYear :
2008
fDate :
21-24 Oct. 2008
Firstpage :
133
Lastpage :
137
Abstract :
This paper investigates the problem of optimal assignment of wireless interfaces for service delivery in the context of a heterogeneous wireless access system. We formulate service requests initiated by the applications running on the mobile device as a multiobjective optimization (MOO) problem: optimal mapping of application requirements to wireless interface while minimizing the monetary cost and maximizing the satisfaction with respect to QoS metrics. This problem is then solved for three different access scenarios using an exhaustive search algorithm and the NSGA-II MOO algorithm. Our aim is to demonstrate how MOO works in such a context, nevertheless for real life problems where exhaustive search cannot handle the problem, we expect NSGA-II to be a more appropriate tool. The results obtained by these algorithms are then discussed and their quality is compared to a more traditional cost function based on weighted sum.
Keywords :
quality of service; radio access networks; search problems; NSGA-II MOO algorithm; QoS metrics; exhaustive search algorithm; heterogeneous wireless access system; multiobjective optimization; optimal mapping; service delivery; weighted sum; wireless interfaces; Artificial intelligence; Context; Context-aware services; Cost function; Disaster management; Intelligent systems; Quality of service; Radio spectrum management; Software radio; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communication Systems. 2008. ISWCS '08. IEEE International Symposium on
Conference_Location :
Reykjavik
Print_ISBN :
978-1-4244-2488-7
Electronic_ISBN :
978-1-4244-2489-4
Type :
conf
DOI :
10.1109/ISWCS.2008.4726033
Filename :
4726033
Link To Document :
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