CONTENTS:Preface. Acknowledgements. PART ONE. 1 Introduction. 2 Evolution from GSM to UMTS Multi-access. 3 The Key Challenges Facing the Mobile Network Architecture. 4 Overview of UMTS Radio Access Technologies. 5 UMTS Radio Access Network. 6 UMTS Core Network. 7 The UMTS Terminal. 8 Services in the UMTS Environment. 9 Security in the UMTS Environment. 10 UMTS Protocols. 11 Procedure Examples. List of Abbreviations. Bibliography. Index.