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Telecom Network Planning for Evolving Network Architectures Reference Manual INTERNATIONAL TELECOMMUNICATION UNION TELECOMMUNICATION Document NPM/5.1 DEVELOPMENT BUREAU 30 January 2008 Original: English only Telecom Network Planning for evolving Network Architectures Reference Manual Draft version 5.1 January 2008 PART 1 ITU, Geneva, 2008 2 ITU-D Telecom Network Planning for evolving Network Architectures Reference Manual Draft version 5.1 Disclaim: These Guidelines have been prepared with the contribution of many volunteers from different Administrations and Companies coordinated by Riccardo Passerini, ITU- BDT. The mention of specific Companies or products doesn’t imply any endorsement or recommendation by ITU. Opinions expressed in this document are those of the contributors and do not engage ITU. Attention: This is not an ITU publication made available to the public, but an internal ITU Document intended only for use by the Member States of the ITU and by its Sector Members and their respective staff and collaborators in their ITU related work. It shall not be made available to, and used by, any other persons or entities without the prior written consent of the ITU. ITU Telecom Network Planning Reference Manual - Draft version 5.1 January 2008 3 PREFACE These Guidelines have been prepared with the contribution of many volunteers from different Administrations and companies. The mention of specific companies or products does not imply any endorsement or recommendation by ITU. All rights reserved. No part of this publication may be reproduced or used in any form or by an means, electronic or mechanical, including photocopying without written permission of the ITU Revision Status : Chapter Title Revision Status 1 Introduction 20 January 2008 2 Overview of network planning 20 January 2008 3 Service definition and forecasting 20 January 2008 4 Traffic characterization 20 January 2008 5 Economical modelling and business plans 20 January 2008 6 Network architectures and technologies 20 January 2008 7 Network design, dimensioning and 20 January 2008 optimization 8 Data gathering 20 January 2008 Annex 1 Network planning tools 20 January 2008 Annex 2 Case Studies 20 January 2008 Annex 3 References 20 January 2008 Attention: This is not an ITU publication made available to the public, but an internal ITU Document intended only for use by the Member States of the ITU and by its Sector Members and their respective staff and collaborators in their ITU related work. It shall not be made available to, and used by, any other persons or entities without the prior written consent of the ITU. ITU Telecom Network Planning Reference Manual - Draft version 5.1 January 2008 4 Reference Manual on the Telecom Network Planning for evolving Network Architectures Table of Contents PREFACE .................................................................................................................. 3 CHAPTER 1 – INTRODUCTION.............................................................................. 10 CHAPTER 2 – OVERVIEW OF NETWORK PLANNING......................................... 14 2.1. Evolution of the Telecom context.............................................................................. 14 2.2. Requirements to the planners .................................................................................. 15 2.3. Typical network planning tasks............................................................................... 16 2.4. Network planning processes..................................................................................... 16 2.4.1 Definition ............................................................................................................. 18 2.4.2 Long-term planning.............................................................................................. 19 2.4.3 Medium-term planning......................................................................................... 21 2.4.4 The breakdown approach for LTP and MTP solving........................................... 23 2.4.4.1 Breakdown approach in LTP....................................................................................................23 2.4.4.2 Breakdown approach in MTP...................................................................................................23 2.5. Overall plans per network layer and technology .................................................... 27 2.6. Solution mapping per scenario................................................................................. 29 2.7. Relation among technical, business and operational plans ................................... 30 2.8 Planning issues and trends when reaching NGN..................................................... 31 2.8.1. End to end multiservice traffic demand: Processes for services and traffic flows aggregation........................................................................................................................... 31 2.8.2. Functionality and location for SSWs. ........................................................................ 32 2.8.3. Design for security at network and information levels .............................................. 32 2.8.3.1 Risks and requirements on security .................................................................................................32 2.8.3.2 Domains for application..................................................................................................................34 2.8.3.3 Security Layers ................................................................................................................................35 2.8.4. Trends towards convergence at different network dimensions.................................. 37 2.8.5. Planning inter-working and interoperability among domains.................................... 37 2.8.6. Quality of Service considerations .............................................................................. 40 2.8.6.1 QoS parameter types .......................................................................................................................41 2.8.6.2 Survey of standardized QoS parameters.........................................................................................41 2.8.6.3 QoS classes and performance objectives.......................................................................................43 2.8.6.4 Service Level Agreement (SLA) .....................................................................................................45 CHAPTER 3 – SERVICE DEFINITION AND FORECASTING................................. 47 Attention: This is not an ITU publication made available to the public, but an internal ITU Document intended only for use by the Member States of the ITU and by its Sector Members and their respective staff and collaborators in their ITU related work. It shall not be made available to, and used by, any other persons or entities without the prior written consent of the ITU. ITU Telecom Network Planning Reference Manual - Draft version 5.1 January 2008 5 3.1. Customer segments .................................................................................................... 47 3.1.1. Per socio-economical category: LE, SME, SOHO, Business, High-end residential, Low-end residential, etc. ................................................................................... 47 3.1.2. Per consumption level: stratified per consumption unit (time, events, information volume) .............................................................................................................................. 47 3.1.3. Per type of end user class (innovators, followers, lazars, addicts, etc.) ............... 47 3.2. Services definition and characterization. Categories.............................................. 47 3.2.1. Service definition as voice, data, video, etc. ........................................................ 47 3.2.2. Service characterization by traffic, bandwidth, etc.............................................. 49 3.3. Services mapping to customer segment.................................................................... 49 3.4. Service forecasting per segment................................................................................ 50 3.4.1. Forecasting methods............................................................................................. 52 3.4.2 Demand forecasting per site and per area ............................................................ 54 3.5. Service bundling......................................................................................................... 55 3.6. Service security........................................................................................................... 55 CHAPTER 4 – TRAFFIC CHARACTERIZATION .................................................... 56 4.0 Multilevel Traffic modelling for NGN..................................................................... 56 4.1. Traffic units for service characterization................................................................. 58 4.1.1. Traffic in Erlang................................................................................................... 58 4.1.2. Bit rate – Mean rate, Pick rate.............................................................................. 58 4.1.3. Total traffic, present of service ............................................................................ 59 4.1.4. Service and degree of usage................................................................................. 59 4.2. Reference periods for dimensioning ........................................................................
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