Książki

technika

telekomunikacja

This book introduces readers to next generation network technologies, mobile terminals, voice and multimedia services and the mobile web 2.0. It discusses how these elements strongly influence each other and how network capabilities, available bandwidth, mobile device capabilities and new application concepts will shape the way we communicate in the future. Chapter one gives an overview of how mobile networks have evolved in the past and what kind of trends are emerging today. Chapter two then takes a look at radio access technologies such as LTE, HSPA+, WiMAX and the evolution of the Wifi standard. Despite the many enhancements next generation radio systems will bring, bandwidth on the air interface is still the limiting factor. Chapter 3 thus takes a look at the performance of next generation systems in comparison to todays networks, shows where the limits are and discusses how Wifi can help to ensure future networks can meet the rising demand for bandwidth and integrated home networking. Voice over IP is already widely used in fixed line networks today and beyond 3G networks have enough capacity and performance to bring about this change in the wireless world as well. Chapter 4 thus focuses on Voice over IP architectures, such as the IP Multimedia Subsystem (IMS) and the Session Initiation Protocol (SIP) and discusses the impacts of these systems on future voice and multimedia communication. Just as important as wireless networks are the mobile devices using them and chapter 5 gives an overview of current terminal architectures and their evolution. Finally, mobile devices are only useful with applications running on them so chapter 6 discusses how mobile web 2.0 applications will change the way we communicate in the future.