Connections Management Strategies in Satellite Cellular Networks E-Book

Malek Benslama

• Herausgeber: John Wiley & Sons
• Kategorie: Wissenschaft und neue Technologien
• Sprache: Englisch

Seitenzahl: 221

Veröffentlichungsjahr: 2015

Beschreibung

This book provides a novel method based on advantages of mobility model of Low Earth Orbit Mobile Satellite System LEO MSS which allows the evaluation of instant of subsequent handover of a MS even if its location is unknown. This method is then utilized to propose two prioritized handover schemes, Pseudo Last Useful Instant PLUI strategy and Dynamic Channel Reservation DCR-like scheme based respectively on LUI and DCR schemes, previously proposed in literature. The authors also approach a different aspect of handover problem: calls with short durations dropped due to a handover failure. We propose a decision system based on fuzzy logic Rescuing System that allows the rescue of calls with short durations facing a premature at the expense of those lasting for long durations.

Leseprobe

Contents

Preface

Abbreviations

General Introduction

1. The Foundations of Satellite Networks

1.1. Introduction

1.2. Satellite orbits

1.3. Time, time variation and coverage

1.4. Orbital paths

1.5. Characteristics of cellular satellite systems

1.6. The advantages of LEO systems

1.7. Handover in LEO satellite networks

2. An Introduction to Teletraffic

2.1. Introduction

2.2. The history of teletraffic theory and technique

2.3. Basic concepts

2.4. Erlang-B and Erlang-C models

3. Channel Allocation Strategies and the Mobility Model

3.1. Introduction

3.2. Channel allocation techniques

3.3. Spotbeam handover and priority strategies

3.4. Mobility model

3.5. Analysis of the mobility model

4. Evaluation Parameters Method

4.1. Introduction

4.2. The advantages of the LEO MSS mobility model

4.3. Evaluation parameters method

4.4. Pseudo-last useful instant queuing strategy

4.5. Guard channel strategy: dynamic channel reservation-like

5. Analytical Study

5.1. Introduction

5.2. An analysis of FCA-QH with different queuing strategies

5.3. Analytical study of FCR and FCR-like

6. The Rescuing System

6.1. Introduction

6.2. Fuzzy logic

6.3. The problem

6.4. Rescuing system [DEL 99]

7. Results and Simulation

7.1. Introduction

7.2. The (folded) simulated network

7.3. Simulation results

8. Pab for IP Traffic in Satellite Networks

8.1. Introduction

8.2. Proportional allocation of bandwidth

8.3. Determination of the label fraction

8.4. Simulation and results

8.5. Conclusion

General Conclusion

Appendix 1: Demonstration of Erlang-B and Erlang-C

Appendix 2: DCA Arrangement

Appendix 3: Calculating the Probability of Handover Request Failure

Appendix 4: Simulation Flow Chart

Appendix 5: Presentation of the Network Simulator Software

Bibliography

Index

First published 2015 in Great Britain and the United States by ISTE Ltd and John Wiley & Sons, Inc.

Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted under the Copyright, Designs and Patents Act 1988, this publication may only be reproduced, stored or transmitted, in any form or by any means, with the prior permission in writing of the publishers, or in the case of reprographic reproduction in accordance with the terms and licenses issued by the CLA. Enquiries concerning reproduction outside these terms should be sent to the publishers at the undermentioned address:

ISTE Ltd27-37 St George’s RoadLondon SW19 4EUUK

www.iste.co.uk

John Wiley & Sons, Inc.111 River StreetHoboken, NJ 07030USA

www.wiley.com

© ISTE Ltd 2015The rights of Malek Benslama, Wassila Kiamouche and Hadj Batatia to be identified as the authors of this work have been asserted by them in accordance with the Copyright, Designs and Patents Act 1988.

Library of Congress Control Number: 2014956812

British Library Cataloguing-in-Publication DataA CIP record for this book is available from the British LibraryISBN 978-1-84821-775-1

Preface

Four books devoted solely to satellite communication: this was the challenge laid down by Professor Malek Benslama of the University of Constantine, who understood that a new discipline was in the process of taking shape.

He demonstrated this by organizing the first International Symposium on Electromagnetism, Satellites and Cryptography in Jijel, Algeria, in June 2005. The success of this conference, which was surprising for an inaugural event, demonstrated the need for specialists with skills that sometimes varied widely from one another to come together in the same place. The 140 papers accepted concerned not only systems but also electromagnetism, antenna and circuit engineering, and cryptography, which often falls under the category of pure mathematics. Synergy must exist among these disciplines in order to develop the new field of activity that is satellite communication.

We have seen that new disciplines of this type emerge in the past; for electromagnetic compatibility, it was necessary to understand both electrical engineering (for guided modes and choppers) and electromagnetism (for propagated modes) and to know how to define specific experimental protocols as well. Further back in time, computer science was the domain of electronics engineers in its early days, and became a separate discipline only gradually.

Professor Benslama has the knowledge and open-mindedness needed to combine all the areas of expertise that coexist in satellite telecommunications. I have known him for 28 years now, and it has been a real pleasure for me to look back on all those years of acquaintance. Not a single year has gone by when we have not seen each other. He spent the first 15 years of his career working on the interaction between acoustic waves and semiconductors, specializing in the solution of piezoelectric equations (Rayleigh waves, surface skimming waves, etc.) while taking an interest in theoretical physics at the same time. A PhD degree in engineering and, later, a high-level State doctorate degree were added to his many achievements. Among the members of his dissertation committee was Madame Hennaf, then Chief Engineer at CNET (the National Centre for Telecommunications Studies in Issy Les Moulineaux). He had already developed an interest not only in telecommunications but also, with the presence of Monsieur Michel Planat, head of research at the National Centre for Scientific Research at LPMO Besançon (CNRS), in the difficult problem of the synchronization of oscillators.

With Michel Planat, he embarked on the path that would lead him to quantum cryptography, a conversion that he has made over the past 10 years, passing without apparent difficulty from Maxwell equations to Galois groups.

He is now one of the people most capable of mastering all the diverse disciplines that form satellite telecommunications.

I hope, with friendly admiration, that these four monographs will receive a warm welcome from both students and instructors.

Professor Henri BAUDRANDProfessor EmeritusENSEEIHTToulouseFranceDecember 2014

Abbreviations

AP

Arithmetic progression

CIR

Committed information rate

CRN

Channel reservation number

DCA

Dynamic channel allocation

DCR

Dynamic channel reservation

DDBHP

Dynamic Doppler-based handover prioritization

DiffServ

Differentiated services

ECL

Elastic channel locking

EF

Equal fractions

EPM

Evaluation parameters method

FCA

Fixed channel allocation

FCR

Fixed channel reservation

FIFO

First in first out

GEO

Geostationary Earth orbit

GH

Guaranteed handover

GP

Geometric progression

GPS

Global positioning system

HEO

High Earth orbit

HG

Handover guard

IP

Internet Protocol

ISL

Intersatellite link

ITU

International Telecommunication Union

LEO

Low Earth orbit

LUI

Last useful instant

MBPS

Measurement based priority scheme

MEO

Medium Earth orbit

MLTQ

Multilevel based queuing

MSS

Mobile satellite system

MU

Mobile user

NPS

Non Prioritization Scheme

PAB

Proportional Allocation Bandwidth

PASTA

Poisson Arrivals See Time Averages

pdf

Probability density function

PLUI

Pseudo LUI

QH

Queuing handover

QoS

Quality of Service

RED

Random early discard

SR

Satellite router

TCP

Transmission Control Protocol

TCRA

Time-based channel reservation algorithm

TR1

Terrestrial Router 1

UDP

User Datagram Protocol

UIT

Union International Telecommunication

General Introduction

A major concern in telecommunications has of late been creating the most efficient methods for managing telecommunications networks. Efficient management is crucial in ad hoc networks [AKR 06], wireless networks [CHE 14] and cellular networks [VEE 14]. Managing the energetic power in the nodes of wireless networks has required a whole prediction process [PEN 14], while managing mobility in wireless networks is based on fuzzy logic [ZIN 14]. In large bandwidth low earth orbit (LEO) satellite networks, a specific router based on multi-service agents has been researched [RAO 14] that has particular requirements with regard to quality of service [YIN 09], namely the allocation strategy in networks [KAR 14], the optimization of resources [WAN 14] and interference [UYA 14]. These factors must be taken into consideration in every management process, given that access to the spectrum is shared in LEO satellite networks [XIE 12].