Satellite-UMTS - Specification of Protocols and Traffic Performance Analysis

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1 Satellite-UMTS - Specification of Protocols and Traffic Performance Analysis Von der Fakultat fur Elektrotechnik und Informationstechnik der Rheinisch-Westfalichen Technischen Hochschule Aachen zur Erlangung des akademischen Grades eines Doktors der Ingenieurwissenschaften genehmigte Dissertation vorgelegt von Dipl.-Ing Seoung-Hoon Oh aus Seoul, Korea Berichter: Universitatsprofessor Dr.-Ing Bernhard Walke Universitatsprofessor Dr. Petri Mahonen Tag der miindlichen Priifung: 21. Mi 2005

2 CONTENTS Abstract Zusammenfassung iii v 1 Introduction Motivation and contribution of the thesis Organization of the thesis 4 2 Satellite UMTS Network architecture of UMTS Integration scenarios for S-UMTS Transparent satellite scenario Integration at J u j (/ (, ) interface (Scenario BP NodeB ) Integration at Iu interface {BPRSC) Regenerative satellite scenarios Node B on Satellite (OBP NodeB ) RNC on Satellite (0BP RNC ) GSN on Satellite {0BP GS N) The referenced integration scenario Selection of satellite constellations for S-UMTS Radio interface protocols of S-UMTS Physical layer Power control in S-UMTS Medium Access Control (MAC) layer Random Access Channel (RACH) in S-UMTS Radio Link Control (RLC) layer AM data transfer service Radio Resource Control (RRC) layer 23 3 Services and QoS requirements of S-UMTS Service requirements of S-UMTS QoS requirements of S-UMTS QoS parameters and System performance metrics End-user performance expectation 28 4 Characteristic of radio channel in satellite system Introduction Two-State Channel Model Fading Transition probability of channel state Link Budget Error Rate for AWGN, Rayleigh and Rice channel models 39

3 Medium Access Protocol for the S-UMTS Introduction Description of the FAUSCH operation Selection of code sequence for FAUSCH Channel access throughput FAUSCH RACH Channel access delay FAUSCH RACH Required transmission power Receiver Detection Performance Further alternatives for the RACH operation 53 Radio Link Control protocol in S-UMTS Introduction Condition of analysis Go-Back-N ARQ Selective repeat ARQ Protocol overhead Impact of the on-board processing type of satellite on the ARQ performance Satellite with error correction capability on the sender side Satellite with error correction capability on both sides Comparison of performance between satellite processing types Effort for the reassembling Conclusion 70 Non-Access Stratum aspect in S-UMTS Introduction Inter-Segment Mobility Management System requirements for providing Inter-Segment MM Multi-mode User Equipment (UE) Core Network Mapping function of the measurements Specification of the Inter-Segment Roaming protocol SIP enhancement for the optimization of the NAS control signaling 78 Investigation tools for performance analysis of S-UMTS Introduction Physical test-bed for performance analysis of S-UMTS Simulator for performance analysis of FAUSCH in S-UMTS Modeling the timely fluctuation of the FAUSCH request Simulation tool for performance analysis of S-UMTS AN protocol Radio interface implementation in S-URIS On-board processing 92 Performance analysis of S-UMTS protocols Performance analysis of FAUSCH in S-UMTS Performance analysis of SR-ARQ in S-UMTS Simulation environment 100

4 9.2.2 Results Performance analysis of the SIPRAN concept Simulation environment Results Performance analysis of Inter-Segment Roaming Ill Test environment Ill Results Performance analysis of End-User Service over S-UMTS Investigation environments VoIP over S-UMTS Results Web browsing over S-UMTS Results File transfer over S-UMTS Results Impact of interference condition on traffic performance Investigation scenarios Results Conclusion Conclusions Achievements Outlook 130 A Satellite communication system 133 A.I Satellite Systems: an overview 134 A.2 Coordinates for a satellite system 135 A.3 Approximated constellation parameters 135 A.4 Typical frequency bands in the satellite communication 137 A.5 Constant values applied for the satellite communication 137 A.6 Coverage Area 138 A.7 Orbit and altitude of satellite system 139 A.7.1 GEO based Mobile Satellite Systems 141 A.7.2 MEO based Mobile Satellite Systems 142 A.7.3 LEO based Mobile Satellite Systems 142 A.7.4 HEO based Mobile Satellite Systems 143 A.7.5 Summary of orbit characteristics 144 A.8 Classification of satellite according to the operational area 144 B Derivation of delay and throughput in ARQ 147 B.I Go-Back-N ARQ 147 B.2 Selective-Repeat ARQ 147 B.3 Satellite with error correction capability on the sender side 148 C Investigation tools used in the thesis 149 C.I Physical test-bed used for performance analysis of S-UMTS 149 C.I.I Multi-mode UE 149 C.1.2 Physical emulator 149 C.1.3 Radio Access Network 149 C.1.4 Core network 151

5 C.2 Simulation parameter in FAst Uplink Signalling CHannel (FAUSCH) simulator 151 C.3 Protocol stacks implemented in S-URIS 153 D Internet application and traffic models 157 D.I Typical internet application and protocols 157 D.I.I Session Initiation Protocol 157 D.l.1.1 User Agent - User Agent Call Flow 157 D.l.1.2 SIP Message Syntax 158 D.1.2 File transfer application 160 D.1.3 WWW application 161 D.2 Implemented traffic models in S-URIS 161 D.2.1 WWW "traffic 161 D.2.2 FTP 162 D.2.3 Speech 162 Acronym 165 Bibliography 171 Resume 177

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