Understanding Cellular Radio.pdf

(731 KB) Pobierz
23665078 UNPDF
Understanding Cellular Radio
Understanding Cellular Radio
William Webb
Artech House
Boston • London
23665078.001.png
Library of Congress Cataloging-in-Publication Data
Webb, William, Dr.
Understanding cellular radio / William Webb.
p. cm. — (Artech House mobile communications library)
Includes bibliographical references and index.
ISBN 0-89006-994-8 (alk. paper)
1. Cellular radio.
I. Title.
II. Series.
TK6570.M6W43
1998
621.3845’6—dc21
98-2921
CIP
British Library Cataloguing in Publication Data
Webb, William
Understanding cellular radio—(Artech House mobile communications library)
1. Cellular radio
I. Title
621.3’8456
ISBN 0-89006-994-8
Cover illustration by Eli Cedrone
© 1998 ARTECH HOUSE, INC.
685 Canton Street
Norwood, MA 02062
All rights reserved. Printed and bound in the United States of America. No part of this book
may be reproduced or utilized in any form or by any means, electronic or mechanical, in-
cluding photocopying, recording, or by any information storage and retrieval system, with-
out permission in writing from the publisher.
All terms mentioned in this book that are known to be trademarks or service marks have
been appropriately capitalized. Artech House cannot attest to the accuracy of this informa-
tion. Use of a term in this book should not be regarded as affecting the validity of any trade-
mark or service mark.
International Standard Book Number: 0-89006-994-8
Library of Congress Catalog Card Number: 98-2921
10987654321
Contents
Preface
xi
Objectives
xi
Acknowledgments
xii
Part I Wireless Communications Systems
1
1 Introduction
3
1.1 Why a book simply explaining technical aspects?
3
1.2 Scope of material covered
4
1.3 Acronyms, abbreviations, and other ways to make it
1.3 complicated
4
1.4 How to read this book
5
1.5 Further reading
6
v
23665078.002.png
vi Understanding Cellular Radio
2 Overview of a Cellular System
7
2.1 Introduction
7
2.2 Why it is called cellular?
7
2.3 System overview
9
3 Basic Cellular System Design
21
3.1 Introduction
21
3.2 The scarcity of radio spectrum
22
3.3 The use of cells as a means to conserve spectrum
27
3.4 Why one channel can serve many users
31
3.5 Basic network design principles
35
3.6 Connecting up the network
41
3.6.1 Leased link
42
3.6.2 Microwave links
43
3.6.3 Satellite links
46
Part II Getting Calls to Moving Subscribers
49
4 Keeping Track of Where the Users Are
51
4.1 Introduction
51
4.2 The concept of location areas
51
4.3 Attach and detach
53
4.4 Periodic location updating
54
4.5 The mobile in a call
55
5 How Calls are Made Between Two Users
57
5.1 Introduction
57
5.2 Paging
57
5.3 Responding to a paging message
59
6 Hand-off
69
6.1 The mobile in a call
69
6.2 Handing the mobile to another cell
69

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin