A utility function-based access selection method for heterogeneous WCDMA and WLAN networks

Yung-Han Chen, Nuan-Yu Yang, Chung-Ju Chang, Fang Ching Ren

Research output: Contribution to conferencePaperpeer-review

15 Scopus citations

Abstract

WCDMA/WLAN interworking networks are considered to support high-data-rate multimedia services and high mobility. In this paper, we propose a utility function-based access selection method (UFAS) to determine which cell is most suitable for a mobile node's service request in heterogeneous WCDMA and WLAN networks. The UFAS method contains three parts, cells classification, utility function computation, and target cell determination. This utility function is composed of four evaluation functions, and is designed with a balancing index which can reduce the utility value of a cell if the cell is heavily loaded. Simulation results show that the UFAS method achieves larger system throughput than a policy-enabled (PE) handoff decision method [8]. Moreover, the UFAS method can reduce handoff occurrence rates and strike a balance between system utilization and cell loading while maintaining QoS requirements.
Original languageEnglish
Pages2557-+
StatePublished - 2007
Event18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07 - Athens, Greece
Duration: 3 Sep 20077 Sep 2007

Conference

Conference18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07
CountryGreece
CityAthens
Period3/09/077/09/07

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