Analysis of performance issues in an IP-based UMTS radio access network

Authors:
Xavier Pérez-Costa;Kjell Heinze;Albert Banchs;Sebastià Sallent
Affiliations:
NEC Network Laboratories, Heidelberg, Germany;NEC Network Laboratories, Heidelberg, Germany;Universidad Carlos III, Madrid, Spain;Universitat Politècnica de Catalunya, Barcelona, Spain
Venue:
MSWiM '05 Proceedings of the 8th ACM international symposium on Modeling, analysis and simulation of wireless and mobile systems
Year:
2005

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Abstract

The substitution of ATM transport by IP in future UMTS Radio Access Networks (UTRAN) introduces several performance challenges that need to be addressed to guarantee the feasibility of its deployment. The significant increase of the overhead requires of header compression and multiplexing methods to achieve a usage of the UTRAN resources similar to the ATM one. Additionally, the specific UTRAN transport needs require the adaptation of standard packet scheduling mechanisms to efficiently use the network resources while providing the required QoS. Our results show that, applying header compression plus multiplexing techniques and taking into account the specific UTRAN synchronization requirements for QoS scheduling, very significant performance improvements can be obtained.