Effect of RAT selection based on service symmetry and network duplex mode in heterogeneous wireless networks

Author

Falowo, Olabisi E. ; Olowole, Oluwaseun

Author_Institution

Dept. of Electr. Eng., Univ. of Cape Town, Cape Town, South Africa

fYear

2011

fDate

13-15 Sept. 2011

Firstpage

1

Lastpage

6

Abstract

This paper proposes the use of service symmetry and network duplex mode, in addition to existing radio access technology (RAT) selection criteria, in making RAT selection decisions in heterogeneous wireless networks (HWNs). It then evaluates the effect of using the two criteria on call blocking/dropping probability in HWNs. The main objective of the proposed algorithm is to reduce new call blocking probability and handoff call dropping probability in HWNs. An analytical model is developed for the RAT selection algorithm, and its performance is evaluated in terms of new call blocking probability and handoff call dropping probability. The performance of the proposed algorithm is evaluated for three different scenarios, in order to study the effect of RAT flexibility, with regard to uplink and downlink resources allocation in HWNs. Simulation results for the three scenarios are compared. Results show that RAT flexibility affects call blocking/dropping probability in HWNs.

Keywords

probability; radio access networks; radio links; RAT flexibility; RAT selection criteria; call blocking probability; downlink resources allocation; handoff call dropping probability; heterogeneous wireless network; network duplex mode; radio access technology; service symmetry; uplink resources allocation; Bandwidth; Channel allocation; Downlink; Markov processes; Mobile communication; Rats; Wireless networks;

fLanguage

English

Publisher

ieee

Conference_Titel

AFRICON, 2011

Conference_Location

Livingstone

ISSN

2153-0025

Print_ISBN

978-1-61284-992-8

Type

conf

DOI

10.1109/AFRCON.2011.6072099

Filename

6072099