Dynamic Call Admission Control and bandwidth redistribution scheme for 802.16 Systems

Author

Ghandour, Fatma ; Frikha, Mounir ; Tabbane, Sami

Author_Institution

Multimedia Mobile Radio Networks Res. Unit, Tunisian High Sch. of Commun., Tunisia

fYear

2009

fDate

15-17 Dec. 2009

Firstpage

1

Lastpage

5

Abstract

In this paper, we propose a new Call Admission Control (CAC) for 802.16 systems. The scheme is based on a dynamic adjustment of the bandwidth offered to all rtPS (Real time polling services) and nrtPS (Non real time plolling services) active connections, for each new connection establishment request in order to maximize the number of accepted connections, without affecting the quality of service offered to those ongoing connections. A linear programming formulation is also given for the bandwidth borrowing problem. Using the simulation results obtained with NS2, we demonstrate the effectiveness of our CAC, especially at maintaining the Quality of Service (QoS) level offered to real time traffic as high as it is possible.

Keywords

bandwidth allocation; linear programming; metropolitan area networks; quality of service; radio networks; telecommunication congestion control; QoS; bandwidth redistribution scheme; dynamic call admission control; linear programming formulation; non real time polling services; quality of service; real time polling services; Admission control; Bandwidth; Base stations; Call admission control; Channel allocation; Communication system traffic control; Linear programming; Quality of service; Stability; Traffic control; 802.16; Admission Control; Bandwidth allocation; Non real time traffic; QoS; Real time traffic;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Days (WD), 2009 2nd IFIP

Conference_Location

Paris

Print_ISBN

978-1-4244-5660-4

Electronic_ISBN

978-1-4244-5662-8

Type

conf

DOI

10.1109/WD.2009.5449705

Filename

5449705