Contents. About the Author. List of Contributors

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1 Contents Preface About the Author List of Contributors xiii xv xvii 1 Introduction Mobile Middleware Mobile Applications and Services Middleware Services Transparencies Mobile Environment Context-awareness Mobility Example Use Case Requirements for Mobile Computing Mobile Platforms Organization of the Book 11 Bibliography 13 2 Architectures and Platforms Overview Networking TCP/IP IPv4 and IPv TCP and UDP MANETs and Wireless Mesh Networks Naming and Addressing Basic Definitions Challenges Mobility and Multi-homing Network Address Translation A Taxonomy Middleware and Platforms Overview Objects, Components, and Services 26

2 viii Contents Message Passing and RPC/RMI Mediation and Delegation Mobility Overview of Platforms Java Platform SPICE Service Ecosystem Mobile Platforms Java ME iphone Symbian and Series BREW WAP Windows Mobile and.net Compact Framework NoTA Linux Maemo Android OSGi Python Flash Lite Opera Mini Summary 64 Bibliography 65 3 Support Technologies Session Initiation Protocol (SIP) IP Multimedia Subsystem (IMS) Web Services Other Technologies IP Television (IPTV) SQLite OpenGL ES PAMP Service Discovery UPnP Jini Service Location Protocol ZeroConf Mobility Solutions Mobile IP Host Identity Protocol (HIP) Wireless CORBA Comparison Advanced Topics Overlay Networks Context-awareness Service Composition Security and Trust Charging and Billing 98

3 Contents ix 3.8 Fuego: Example Middleware Platform 99 Bibliography Principles and Patterns Definitions Principles Internet Principles Web Principles SOA Principles Security Principles Mobile Principles: Device View Mobile Principles: SIP Architecture Cross-layer design Model Driven Architecture Architectural Patterns Overview Client-Server Three-tier Architecture Model-View-Control Broker Microkernel Active Object General Patterns Structural Patterns Behavioral Patterns Concurrency Patterns Patterns for Mobile Computing Distribution Patterns Resource Management and Synchronization Communications Summary 134 Bibliography Interoperability and Standards Interoperability Standardization Standardization Process in General Standards Organizations Wireless Communications Standards Cellular Networks Local Area Networks Personal Area Networks Comparison W3C Standards The Mobile Web Initiative Basic XML Specifications XML Schema Languages XML Querying and Transformations 154

4 x Contents User Interfaces and Multimedia The XML Stack IETF Standards Emerging Internet Standards Peer-to-Peer SIP Efficient XML Interchange 159 Bibliography Mobile Messaging Messaging Fundamentals Messaging System Components Message Exchange Patterns Messaging Architectures Mobile and Wireless Communication Mobile Hosts Wireless Links Two-way Communication Designing for Mobility Security Confidentiality Integrity Message-level Security Reliability Java Message Service CORBA and CORBA Messaging Architecture Locator Syntax Protocol XMPP Web Services Architecture Locator Syntax Protocol The Web and REST Architecture Locator Syntax Protocol 196 Bibliography Publish/Subscribe Overview Router Topologies Interest Propagation Routing Decision Standards OMG Data Distribution Service (DDS) 206

5 Contents xi IP IMulticast RSS and Atom Java Distributed Event Model SIP Event Framework CORBA Notification Service and Channel Management WS-Eventing and WS-Notification Research Systems Scalable Internet Event Notification Architecture (SIENA) Elvin JEDI Rebeca STEAM Fuego Event Service Advanced Topics 220 Bibliography Data Synchronization Synchronization Models Basics of Synchronization Synchronization Process Architectures for Synchronization Type-Specific Synchronization File Systems and Version Control Synchronization in Middleware Case Studies OMA Synchronization (SyncML) The Coda File System The Unison Synchronizer 238 Bibliography Security Basic Principles Cryptography Public Key Infrastructure Network Security X AAA, RADIUS, Diameter Transport-layer Security Web Services Security Security Tokens SAML XACML Single Sign-On (SSO) Generic Bootstrapping Architecture (GBA) Trusted Platform Module OpenID, OAuth, MicroID Spam Downloaded Code 268 Bibliography 269

6 xii Contents 10 Application and Service Case Studies Mobile Services Accountability Identity Management Taxonomy of Services Location Awareness Pervasive Services Smart Spaces Mobile Server Mobile Advertisement Mobile Push Mobile Video Mobile Widgets and WidSets Airline Services Revisiting Mobile Patterns Summary 295 Bibliography Conclusions 299 Index 303

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