A New Approach of UMTS-WLAN Load Balancing; Algorithm and its Dynamic Optimization

Author

Nasri, Ridha ; Samhat, Abed ; Altman, Zwi

Author_Institution

Orange Labs Research & Development, 38-40 rue du General Leclerc, 92794 Issy les Moulineaux, France, ridha.nasri@orange-ftgroup.com

fYear

2007

fDate

18-21 June 2007

Firstpage

1

Lastpage

6

Abstract

The problem of dynamic load balancing in heterogeneous networks is investigated. The sub-systems considered are a UMTS network with WLAN hotspots. A load balancing algorithm is first proposed that can push traffic between the two sub-systems according to load conditions and predetermined load thresholds. To adapt the algorithm to traffic condition, the load threshold for the UMTS to WLAN vertical handover is auto-tuned. The auto-tuning process is orchestrated by a fuzzy logic controller that is optimized using the fuzzy Q-learning algorithm. Numerical simulations using a semi-dynamic network simulator illustrate the effectiveness of the proposed approach.

Keywords

3G mobile communication; Communication system control; Communication system traffic control; Fuzzy logic; Heuristic algorithms; Land mobile radio cellular systems; Load management; Telecommunication traffic; Traffic control; Wireless LAN; Terms-Heterogeneous networks; UMTS; WLAN; auto-tuning; fuzzy Q-learning; load balancing;

fLanguage

English

Publisher

ieee

Conference_Titel

World of Wireless, Mobile and Multimedia Networks, 2007. WoWMoM 2007. IEEE International Symposium on a

Conference_Location

Espoo, Finland

Print_ISBN

978-1-4244-0993-8

Electronic_ISBN

978-1-4244-0993-8

Type

conf

DOI

10.1109/WOWMOM.2007.4351745

Filename

4351745