1 of 1 people found the following review helpful:
5.0 out of 5 stars
The best IMS book!, December 26, 2009
This review is from: IMS: A New Model for Blending Applications (Informa Telecoms & Media) (Hardcover)
This book is a must have for anyone wanting solid information on IMS. This is some of the best IMS reference materials with only around 300 pages. You can't beat the value this book offers.
The authors do an incredible job in explaining IMS to readers. I enjoyed the layout of this book for the "modular design" it contained within its sessions. The first session of this book is dedicated to high-level architecture and the foundations of IMS. It is easy to understand the values of IMS such as session control, service blending, QoS, flexible charging and the evolution with key elements in control, bearer, and application planes. Once you have a good grasp from session 1, session 2 further breaks down various essences of IMS into components. This is very helpful in getting the background information such as SIP, SDP, MSRP, XML, and Diameter for building IMS serving certain types of purposes.
Session 3 are dedicated to the `enablers' of IMS OMA. These chapters include information on these OMA enablers' design purposes, features, values provided to subscribers and how to implement them. The book is written in an easy to follow layout.
Session 4 is most interesting session by reading various vignettes to get into the contexts of IMS in real world implementations. The IMS service delivery framework are laid out for high-level viewing on what and how IMS new services are designed, introduced and maintained. The authors did a marvelous job on these real-world scenarios to help readers fully understand how IMS relates to everyone's life.
I believe that anyone reading this book will benefit from the information presented, no matter how the depth the readers expect on IMS real world implementations. The book helps in these areas and more. The real bonus of this book is written by three experts from AT&T. It's by far the best IMS book I have ever read. Grab it and read a few pages, you will find how indispensable this book is.
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1 of 5 people found the following review helpful:
5.0 out of 5 stars
Susatainable plans for Ad Hoc Networks, March 23, 2009
"Ad Hoc Mobile Wireless Networks: Principles, Protocols, and Applications" digs into a topic that is growing more important by the day. The number of electronic devices that are both mobile and wireless is increasing rapidly on a worldwide basis. What steps are being taken to get these devices to work together? How will people use these technologies? This recent book by three professors from different technology / engineering schools in India maps out this emerging area of technology.
Here's a summary of the chapter headings:1) Introduction, 2) MAC Layer Protocols, 3) Routing Protocols, 4) Multicast Protocols, 5) Transport Protocols, 6) Quality of Service, 7) Energy Management, 8) Mobility Models for Multihop, 9) Cross-Layer Design Issues, 10) Applications and Recent Developments.
The Introduction states that "communication between various devices makes it possible to provide unique and innovative services. Although this interdevice communication is a very powerful mechanism, it is also a complex and clumsy mechanism, leading to a lot of complexity in the present-day systems." The first chapter provides a concise, high level description of Bluetooth, IrDA, HomeRF, WiFi, WiMax, Hotspts, and Mesh.
The authors turn to the central topic of the book on page 21, asking "What Are Ad Hoc Networks?" They answer: "An ad hoc network is a collection of wireless mobile nodes (or routers) dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration."
Chapters 6 and 7 deserve special mention, in that they cover central issues in today's deployment of Ad Hoc (and mesh) networks. Yet, to the best of my knowledge, these topics haven't received systematic attention in the popular press anyplace else. In Chapter 6 we read about Quality of Service (QoS) as "a measure of the level of service ... in the network." QoS is a fundamental issue that must be proactively addressed for these kinds of networks to succeed. This text is a good guide on what matters most.
Chapter 7 is a spotlight on how unique this book is. This chapter on Energy Management hits a topic that is critically important to mobile-anything. You'll learn about energy (power) management. The authors write, "because network nodes have limited energy resources, the energy expended for transferring information across the network has to be minimized." This chapter tackles three main themes: battery management, transmission management, and overall system power management. Whether you are interested in the SmartGrid or SmartBatteries, this chapter will give a new view of the topic.
The next-to-last chapter on "Cross-Layer Design" begins a discussion on the kinds of pros/cons that are being factored into today's implementations of mobile wireless stacks. This short chapter is a basic beginning to understanding the architecture of wireless stacks.
The final chapter suggests a number of Ad Hoc applications: search-and-rescue, defense (army, navy, air force), health care, various organizational environments (e.g. academic, corporate.) Entire books could be written on each of these application arenas, as well as many more: e.g. municipal wireless activities sponsored by grassroots, corporate-backed, and government initiatives.
This book because covers a broad landscape of mobile wireless networks and imparts an overview of how protocols work and are designed. You'll get both theoretical and practical explanations of many facets of Ad Hoc. For instance, I never knew about ARA (the Ant Colony-Based Routing Algorithm), but now I do and it could be quite useful! The authors have documented a rich language for discussing and thinking about wireless mobile networks, which should ultimately speed up forward progress.
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