Personal Satellite Services (eBook)

PSATS 2009 Conference Report 5
Organization 6
Table of Contents 9
Analysing the Orbital Movement and Trajectory of LEO (Low Earth Orbit) Satellite Relative to Earth Rotation 11
Introduction 11
Orbital Rotation of Earth 13
Orbital Movement and Trajectory of LEOs Relative to Earth Rotation 15
Conclusion 20
References 20
A Cross-Layer PEP for DVB-RCS Networks 22
Introduction 22
BSM-Compliant Reference Scenario 24
PEP-Spoofer with Cross-Layer Signalling 25
Conclusions 28
References 29
Triple Play over Satellite, Ka-Band Making the Difference 30
Introduction 30
The KA-SAT Satellite 31
Why Ka-Band for KA-SAT 32
The Tooway$^{TM}$ Service 34
Broadband Access 34
The VoIP Service 35
TV Services 35
The Tooway$^{TM}$ Consumer Terminal 36
Conclusion 38
Time Scheduling Based on Tradeoff between Detection Performance and QoS Requirement 39
Introduction 39
Time Scheduling Scheme 40
Definitions of the Parameters 41
Average Detection Threshold 41
Optimal Sensing Time 42
Transmission Time 42
Secondary Sensing Time 43
Simulation Results 43
Conclusions 44
References 45
Study of the Quantum Channel between Earth and Space for Satellite Quantum Communications 47
Introduction 47
Signal and Noise in the Quantum Channel 47
Key Generation Rate 49
References 50
Spectral Analysis of Experimental Ka-Band Propagation Measurements over the Australian LEO Microsatellite ‘FedSat’ 51
Introduction 51
Experimental Platform 52
Spacecraft and Earth Station 52
Pass Operation and Data Collection 53
Propagation Measurement Results 54
Time-Domain Analysis 54
Power Spectra Analysis 55
Validation of Results 57
Comparison with PSD Results from GEO Satellite Experiments 57
Conclusion 58
References 58
Satellite Broadband Revolution: How Latest Ka-Band Systems Will Change the Rules of the Industry. An Interpretation of the Technological Trajectory 59
Introduction 59
Inside the Innovation Black-Box 60
Technological Paradigm and Technological Trajectory 60
Externalities 60
Satellite Broadband for Consumer: An Interpretation 61
Recognized Reverse-Salient Points by the Satellite Industry 61
The New Reverse Salient: The Satellite Capacity 62
Dramatic Improve in Performances 63
The New Paradigm: What Are the New Rules of the Game 65
Why Ka-Band 66
Foreseen Industry Evolution 67
Future Ka-Band Applications 68
Ka-Band: A Bright Future Ahead 68
Conclusions 69
References 69
Performance Enhanced Proxy Solutions for Satellite Networks: State of the Art, Protocol Stack and Possible Interfaces 71
Introduction 71
Types of PEPs 71
PEPs’ Implementations 72
Overview of PEP Mechanisms 72
PEP Protocol Stack 73
PEP and ST/BSM Nodes’ Interfaces 75
Conclusions 77
References 77
PEPsal Performance Analysis on Disruptive Radio Channels 78
Introduction 78
TCP Timers 79
The Retransmission Timer Algorithm 79
Remarks on the Maximum Tolerable Disruption Length, and TCP Agility on Restarting Transmission 80
PEPsal 81
The TATPA Testbed 82
A Case Study: Disruptions Caused by Railway Tunnels 83
The Characteristics of the “Direttissima” Bologna-Florence Railway Line 83
Numerical Results 84
Conclusions 85
References 86
PEP Deployment and Bandwidth Management Issues 87
Introduction 87
PEP Technology 88
Satellite PEP Deployment Scenarios 88
Optimization of VSATs 88
Mobile Satellite Services Optimization 89
PEP Client Software Based Solutions 92
Bandwidth Management 92
Remote Terminals and Fully Meshed Networks 92
Hub PEP Issues 93
Comments 93
References 94
High Altitude Platforms: Radio Resource Management Policy for MBMS Applications 95
Introduction 95
MBMS/HAP Architecture 96
MBMS/HAP Transport Channels 98
Obtained Results 99
Conclusion 102
References 102
Frequency Tracking Performance Using a Hyperbolic Digital-Phase Locked Loop for Ka-Band Communication in Rain Fading Channels 104
Introduction 104
Communication System and Ka-Band Channel Models 105
The Hyperbolic Digital Phase Locked Loop 107
Lock-In Range 108
Theoretical Loop Analysis 108
Phase Noise Analysis 110
Conclusion 112
References 112
Design and Implementation of P2P Streaming Systems for Webcast 113
Introduction 113
Related Works 114
P2P Streaming 114
Peer Configuration 114
Mechanism for Waiting Time Generation 115
Definition of Simulation Environment 116
Design 116
Assumed Environment 116
System Configuration 117
Implementation 117
Evaluation 118
Evaluation Environment 118
Waiting Time 118
Interruption Time 119
Discussion 119
Effect of Interruption 119
Scheduling Methods in DeSPerS 119
Conclusion 120
References 120
Comparisons on Performances in MIMO Systems under Different Propagation Environments 121
Introduction 121
SystemModel 122
Channel Models 123
SystemPerformances 124
Numerical Analysis 125
Conclusion 129
References 130
Combined Congestion Control and Link Selection Strategies for Delay Tolerant Interplanetary Networks 132
Introduction 132
Delay Tolerant Network (DTN) Architecture 134
The Integrated Framework 134
Performance Analysis 138
Conclusions 141
References 141
Broadband Satellite Multimedia (BSM) Security Architecture and Interworking with Performance Enhancing Proxies 142
Introduction 142
Overview of BSM PEP Terminal Architecture and Components 144
Previous Research Work Related to PEP Security 147
Security Solutions for BSM PEPs 148
BSM Link Layer Security Architecture Suitable for PEPs 150
Conclusion 151
References 152
A Satellite-Based Infrastructure Providing Broadband IP Services on Board High Speed Trains 153
Introduction 153
The Railway Environment 153
Mobile Satellite Communications in the High Speed Trains 153
Mechanical and Electrical Constraints 154
Electromagnetic Emission Control 155
The Satellite System 155
Asynchronous Spread Spectrum Access to the Satellite 155
The Low Profile Satellite Antenna 156
Satellite Link Budget 157
Vertical Hand-Over 158
Tests and Measurements 159
The Effects on the Traffic in Non-LOS Conditions 159
The Coverage Mapping 160
Conclusions and Future Work 162
References 162
Author Index 163