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Impacts of air interface admission control and user mobility on UTRAN transport simulations
Publikationstyp
Journal Article
Date Issued
2010-02-01
Sprache
English
Author(s)
Journal
Volume
43
Issue
1-2
Start Page
121
End Page
132
Citation
Telecommunication Systems 43 (1-2): 121-132 (2010-02-01)
Publisher DOI
Scopus ID
Publisher
Springer Science + Business Media B.V
UMTS Terrestrial Radio Access Network (UTRAN) Transport Network Layer dimensioning has been of great interest among network researchers and planners due to the limit of Iub bandwidth. This paper investigates the potential impacts caused by Connection Admission Control (CAC) mechanism of the air interface and User Mobility (UM) on simulations carried out for the UTRAN transport network domain. Independent from the TNL CAC mechanism of the transport network which is in charge of Iub link bandwidth, the Radio CAC function deals with the highly non-linear resources needed for an attempted connection depending on its specific propagation and interference situation. The consideration of the air interface acting as bottleneck results into a less challenging amount of traffic for the transport domain. In addition, mobile user behaviors, e.g. UM, may dynamically change traffic load at the air interface, and in consequence affect Iub load, which has a very close correlation with cell load. In this work, a simulation model with Radio CAC mechanism and Handover strategies is implemented to study this correlation, and evaluate the UTRAN transport network performance given a limited radio capacity. The analysis on the impacts of the Radio CAC and UM are derived from qualitative simulations.
Subjects
CAC
Dimensioning
Handover
Iub
RRM
UMTS
User mobility
UTRAN
DDC Class
004: Informatik