Integration of Cellular and Wi-Fi Networks

[aubidamax]

hi all

TABLE OF CONTENTS
Executive Summary ...................................................................................................................................... 4
1 Introduction ............................................................................................................................................ 6
1.1 Drivers for Wi-Fi ............................................................................................................................ 6
1.2 Recent Wi-Fi Enablers .................................................................................................................. 7
1.2.1 Evolving Standards ................................................................................................................... 7
1.2.2 Evolving Device Capabilities ..................................................................................................... 8
1.2.3 Evolving Models of Wi-Fi/Cellular Interworking ......................................................................... 9
1.3 Challenges with Wi-Fi/Cellular Interworking ............................................................................... 10
2 Current State-of-the-Art and Existing Challenges ............................................................................... 12
2.1 Key Aspects of Wi-Fi/Cellular Integration ................................................................................... 12
2.1.1 Seamless Service Continuity Between 3GPP and Wi-Fi ........................................................ 12
2.1.2 Supporting Real-Time Services & QoS Over Trusted Wi-Fi ................................................... 18
2.1.3 Security & Authentication ........................................................................................................ 20
2.1.4 HotSpot 2.0 and Passpoint ..................................................................................................... 22
2.1.5 Intelligent Network Selection ................................................................................................... 24
2.2 Network Aspects of Intelligent Network Selection....................................................................... 25
2.2.1 ANDSF Information and Policy Elements ............................................................................... 27
2.2.2 Roaming and ANDSF .............................................................................................................. 29
2.2.3 What is Not Specified in ANDSF Standards Today ................................................................ 29
2.2.4 Analytics and ANDSF .............................................................................................................. 31
2.3 Device Aspects of Intelligent Network Selection ......................................................................... 32
2.3.1 Intelligent Network Selection and Traffic Steering .................................................................. 33
2.3.2 Role of Device and Key Required Information ........................................................................ 33
2.3.3 Current State of Art ................................................................................................................. 34
2.3.4 Gap Analysis ........................................................................................................................... 39
3 Recommended Solutions & Key Enablers of Intelligent Network Selection ........................................ 41
3.1 Network Architecture Aspects ..................................................................................................... 41
3.1.1 Supporting a Rich ANDSF Solution for Access Network Selection & Routing ....................... 41
3.1.2 Enabling the Sharing of Network Information with ANDSF ..................................................... 43
3.1.3 Bringing Venue Information to ANDSF ................................................................................... 44
3.1.4 SIB-Based Distribution of Network conditions ........................................................................ 46
3.2 Device Aspects............................................................................................................................ 51
3.2.1 High Level Architecture and Key Functional Components...................................................... 51
3.2.2 Functionality of an INS Mobile Device .................................................................................... 52
3.2.3 INS models .............................................................................................................................. 57
3.2.4 Putting Things Together .......................................................................................................... 59
4 Conclusions ......................................................................................................................................... 62
5 Acknowledgements .............................................................................................................................. 65

[andoniwireless]

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