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Written by an insider, this book covers the concept of evolved 3G networks of standardization. It draws from standardization meeting notes, company analyses and online discussion to detail relevant history, detours and alternatives that were not used.

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In this chapter we describe the motivation for writing this book and explain its scope. Some remarks on nomenclature are given in order to help the reader with a fast and easy start. The concept and structure of the material compiled is p- sented, followed by some hints on how to make best use of it. Finally the status of standardization, on which this book is based, is described. 1. 1 Motivation Probably the main motivation for starting to draft the script for this book, and eventually to finish it, was the desire to have a more or less complete, up-to-date overview of mobile network technology for myself, not only when starting my work in 3GPP standardization, but also continuously afterwards. I realized that some of my colleagues were in search of the same, and I extrapolated to the point where, after 3G technology is in in the field for some time, the huge, new step of development would be implemented and finally exist in reality: a manifold of s- tem designers, SW engineers, solution consultants, test personnel, field tech- cians and service staff would have to deal with the underlying architecture, c- cepts and detailed procedures. Yet, I noticed in my roughly two decades of work as a engineer (in a few diverse fields) that compact, consistent, and balanced ov- view material, suitable for the wider audience is scarce.

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Chapter 1: Introduction Chapter 2: Mobile Networks Evolution Success and limitations of GSM, GPRS and UMTS The need for a new architecture Requirements for the new architecture Evolution tracks in mobile network standardization Chapter 3: Architecture of the Evolved 3GPP System Overall architecture Evolved Radio Access Network and Evolved Packet Core Network Architectures for interworking between EPC and legacy 3GPP PS/CS system Architecture for Interworking with non-3GPP accesses Architecture for I-WLAN mobility Further architectural enhancements (for access network discovery and selection, home cell deployments and warning system) Examples of deployment/operation Limitations of Rel. 8 and preview of Rel. 9/Rel. 10 Chapter 4: Main Concepts E-UTRA physical and link layer Evolved Radio Access Network Concepts for tracking, AAA, security IP Packet Bearer, QoS and policy & charging control EPS mobility and session management Interworking with legacy circuit switched domain and non-3GPP accesses I-WLAN Mobility Further concepts (service continuity on IMS level, SMS handling, Closed Subscriber Groups, etc.) Chapter 5: Functions and Procedures of the Evolved 3GPP System Authentication and Authorization, node selection functions IP Address allocation and configuration Attachment, detachment, session Handling, connection management Intra and inter system mobility Special procedures Chapter 6: Protocol Environment Mobility/Tunneling protocols (GTP and PMIPv6) EAP, IKEv2/MOBIKE, DIAMETER and SCTP S1, X2 and NAS Signaling Protocols OMA Device Management

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