Simulation analysis of impact of AAL2 multiplexing efficiency on ATM bandwidth overbooking in UTRAN

Author

Gonen, Eren Kudsi ; Xu, Hua ; Chen, Yi-Chiun ; Xu, Xiao

Author_Institution

Global Telecom Solutions Sector, Motorola Inc., Arlington Heights, IL, USA

fYear

2002

fDate

2002

Firstpage

680

Lastpage

684

Abstract

ATM is used as the transport mechanism in the radio access networks of UMTS systems. In some portion of the RAN, AAL2 VCs carrying user traffic between a Node B and its controlling RNC are multiplexed into a comprising entity such as a VP. Usually, the bandwidth of this VP is overbooked by taking advantage of statistical multiplexing gain among virtual circuits (VCs), and the overbooked bandwidth can be calculated with a safety percentile once PDF of the food on each VC is known. VC load distribution is a function of the load distribution at ATM SAP, ATM overhead and AAL2 multiplexing efficiency, however analytical estimation of multiplexing efficiency is infeasible. In this paper, by means of simulations, we examine the effect of AAL2 multiplexing efficiency on the VC load distribution for UMTS based traffic. Consequently, we observe its impact on VP bandwidth sizing and overbooking in UTRAN.

Keywords

3G mobile communication; asynchronous transfer mode; digital simulation; packet radio networks; radio access networks; telecommunication traffic; AAL2 VC; AAL2 multiplexing efficiency; ATM bandwidth overbooking; ATM overhead; UMTS Radio Access Network; UMTS based traffic; UMTS systems; UTRAN; VP bandwidth sizing; overbooked bandwidth; simulation analysis; statistical multiplexing; transport mechanism; virtual circuit load distribution; 3G mobile communication; Analytical models; Asynchronous transfer mode; Bandwidth; Circuits; Communication system traffic control; Radio access networks; Safety; Traffic control; Virtual colonoscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Mobile and Wireless Communications Network, 2002. 4th International Workshop on

Print_ISBN

0-7803-7605-6

Type

conf

DOI

10.1109/MWCN.2002.1045852

Filename

1045852