Investigations of scheduling strategy for low data rate real time IP based service in wireless LAN

Author

Luo, Jijun ; Dillinger, Markus ; Schulz, Egon

Author_Institution

Siemens AG, Munich, Germany

Volume

1

fYear

2002

fDate

29 June-1 July 2002

Firstpage

539

Abstract

The paper introduces the modeling of IP based voice traffic and an investigation of the scheduling algorithms for this type of low data rate real time service in wireless LAN (WLAN) systems. We examine the HIPERLAN/2 system as a typical case. The problem of typical low system utilization for real time services by using inappropriate scheduling algorithms in broadband networks is revealed. Two approaches are proposed, one using variable sized protocol data units (PDU) and one utilizing alternating MAC frames for individual connections. The comparison between these two algorithms is given. It is concluded that the scheduling algorithm has a significant impact on system performance. Without changing the system structure, by alternating the MAC frame, a large number of users can be admitted in the wireless LAN system. The investigations can be applied to more extended low data rate real time services in WLANs.

Keywords

Internet telephony; broadband networks; integrated voice/data communication; scheduling; telecommunication traffic; wireless LAN; HIPERLAN/2; IP based voice traffic; VOIP; alternating MAC frames; broadband networks; low data rate services; protocol data units; real time services; scheduling algorithms; voice over IP; wireless LAN; Bit rate; Job shop scheduling; OFDM; Quality of service; Real time systems; Resource management; Scheduling algorithm; Testing; Traffic control; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems and West Sino Expositions, IEEE 2002 International Conference on

Print_ISBN

0-7803-7547-5

Type

conf

DOI

10.1109/ICCCAS.2002.1180677

Filename

1180677