Ip Telephony Demystified

 by Ken Camp

      $49.95

Broadband Technology, Operation, and Services

Book Description

The how and why of WiMAX the technology that's revolutionizing wireless broadband

WiMAX Crash Course offers an accessible overview of the revolutionary solution for wireless delivery of broadband services. Using real-world examples, the book explains how WiMAX works and discusses the business and economic implications of this groundbreaking technology.

WiMAX is emerging rapidly, and this book will get you up to speed quickly. The book gives you the ability to ask the right questions of their providers before making infrastructure and service delivery decisions. Soon,WiMAX will be everywhere. By reading this book, you will be ready to take full advantage of everything this innovative technology has to offer.


From the Back Cover

The How and Why of WiMAX -- The Revolutionary Wireless Broadband Technology

WiMAX Crash Course offers an accessible overview of the revolutionary solution for wireless delivery of broadband services. Using real-world examples, the book explains how WiMAX works, the applications it enables, and how it integrates with other technologies. You'll find in-depth coverage of the business and economic implications of this groundbreaking technology, as well as regulatory issues.

WiMAX is emerging rapidly, and this book will get you up to speed quickly, giving you the tools to evaluate service providers before making infrastructure and service delivery decisions. You'll also get strategies for integration and deployment. Soon, WiMAX will be everywhere. WiMAX Crash Course will help you take full advantage of everything this innovative technology has to offer.

FULL COVERAGE OF WiMAX, INCLUDING:
* Introduction to Wireless and WiMAX * WiMAX History and Support Organizations * How WiMAX Works * WiMAX Applications and Services * WiMAX Regulatory Issues * WiMAX and Other Broadband Wireless Features

Book Description

This text is aimed at someone making primary decisions as to the design and implementation of an 802.16 based wireless public network. This is a manual on how to architect and operate a service network offering broadband wireless "last mile" access. The scope of the treatment includes all layers of the network and issues of management and administration.This operational handbook covers both the planning and construction, and the day to day operation, of a standards-based broadband wireless network. It explains the advantages of broadband wireless and where it constitutes a best solution, and it also delineates the unique difficulties, challenges, and limitations of broadband wireless. It does not attempt to summarize all knowledge relating to digital radio services or public packet networks, but provides essentials for planning and running the networks and indicates what kinds of specialized services should be secured to ensure the success of the undertaking.

WiMAX: Taking Wireless to the MAX

Book Description

With market value expected to reach $5 billion by 2007 and the endorsement of some of the biggest names in telecommunications, World Interoperability for Microwave Access (WiMAX) is poised to change the broadband wireless landscape. But how much of WiMAX's touted potential is merely hype? Now that several pre-WiMAX networks have been deployed, what are the operators saying about QoS and ROI? How and when will device manufacturers integrate WiMAX into their products? What is the business case for using WiMAX rather than any number of other established wireless alternatives? WiMAX: Taking Wireless to the MAX examines the evolution of wireless, broadband, and the wireless broadband landscape with exhaustive coverage of technological advances and evolving topologies. It sets the tone for the journey towards untouched wireless heights - WiMAX. The author builds a complete understanding of Broadband Wireless Access (BWA) Technologies, elaborating on past developments, present needs and uses, and future trends and markets. He lays out a road map to the future and articulates present and future applications and models of BWA with focus on WiMAX. The book also provides a detailed discussion on the advanced technologies central to the existence of WiMAX. It presents strategies for building the case for WiMAX and achieving success for the different players, including service providers and equipment manufacturers. An increasing demand for access to information anytime, anywhere has led to explosive growth in access and wireless technologies. The trend has created new competitive threats as well as new opportunities in every walk of life. The task, then, is to turn possibilities into realities and provide solutions that enable anywhere, anytime access to information and applications at low cost and with a small investment. Taking a coherent and fact-based approach, this book explores the space between what is known and available and what industry needs.

Book Description

WiMAX Handbook
Building 802.16 Wireless Networks
by Frank Ohrtman

Get a thorough introduction to WiMAX - the revolutionary new 802.16 IEEE standard for point-to-point and point-to-multipoint wireless broadband access.

WiMAX Handbook annotates the 802.16 specification and explains how to design and build a robust, reliable, and secure WiMAX network that takes full advantage of the wide range, increased throughput, and "last mile" solutions offered by WiMAX.

Contents:

1. Introduction
   • Telecommunications Networks - The Need for an Alternative Form of Access
   • Switching
   • Transport
   • Access
   • Replacing the PSTN One Component at a Time
   • Objections to Wireless Networks
   • QoS
   • Security
   • Interference Mitigation
   • Economic Advantage of WiMAX
   • Regulatory Aspects of Wireless Networks
   • Improved Quality of Life with Wireless Networks
   • Disruptive Technology
   • Disruption for Telephone Companies
   • Disruption for Cable TV and Satellite TV Companies
   • Disruption for Cell Phone Companies
   • Disruption for the Backhaul Industry
   • Conclusion

    

2. WiMAX: The Physical Layer (PHY)
   • Introduction
   • The Function of the PHY
   • OFDM: The "Big So What?!" of WiMAX
   • TDD and FDD
   • Adaptive Antenna System (AAS)
   • WiMAX Variants
   • OFDM Variants 2-11 GHz
   • Single Carrier (SC) Variants
   • Conclusion

    

3. The Medium Access Control (MAC) Layer
   • The MAC as the "Smarts" for the Physical Layer
   • The MAC and WiMAX Architecture
   • Service Classes and QoS
   • Service-Specific Convergence Sublayers
   • Common Part Sublayer
   • Packing and Fragmentation
   • PDU Creation and Automatic Repeat Request (ARQ)
   • Transmission Convergence (TC) Layer

    

4. How WiMAX Works
   • Channel Acquisition
   • Initial Ranging and Negotiation of SS Capabilities
   • SS Authentication and Registration
   • IP Connectivity
   • Connection Setup
   • Radio Link Control (RLC)
   • The UL
   • Service Flow
   • Conclusion

    

5. Quality of Service (QoS) on WiMAX
   • Overview
   • The Challenge
   • Legacy QoS Mechanisms
   • FDD/TDD/OFDM
   • Forward Error Correction (FEC)
   • Bandwidth Is the Answer - What Was the Question?
   • QPSK Versus QAM
   • Multiplexing in OFDM
   • What OFDM Means to WiMAX
   • QoS: Error Correction and Interleaving
   • QoS Measures Specific to the WiMAX Specification
   • Theory of Operation
   • Service Flows
   • The Object Model
   • Service Classes
   • Authorization
   • Types of Service Flows
   • Service Flow Management
   • Conclusion

    

6. Dealing with Interference with WiMAX
   • Interference - Some Assumptions
   • Defining Interference or "Think Receiver"
   • Forms of Interference
   • Countering Interference
   • Changing Channels Within the ISM or U-NII Bands
   • Dealing with Distance
   • Internal (CoCH) Sources of Interference
   • OFDM in Overcoming Interference
   • Handling ISI
   • Mitigating Interference with Antenna Technology
   • Multiple Antennas: AAS
   • Adaptive Antenna (AA) Techniques
   • Dynamic Frequency Selection (DFS)
   • If You Want Interference, Call the Black Ravens

    

7. Security and 802.16 WiMAX
   • Security in WiMAX Networks
   • The Security Sublayer
   • The PKM Protocol
   • TEK Exchange Overview
   • Cryptographic Methods
   • Conclusion 104

    

8. WiMAX VoIP
   • PSTN Architecture
   • Voice Over WiMAX-The Challenge
   • VoIP
   • Origins of VoIP
   • How Does VoIP Work?
   • VoIP Signaling Protocols
   • Switching
   • Softswitch (aka Gatekeeper, Media Gateway Controller)
   • Other Softswitch Components
   • VoIP and Softswitch Pave the Way for Voice Over WiMAX
   • Objections to VoIP Over WiMAX
   • Objection One: Voice Quality of WiMAX VoIP
   • Solution: Voice Codecs Designed for VoIP, Especially VoIP Over WiMAX
   • Modifying Voice Codecs to Improve Voice Quality
   • The QoS Solution: Fix Circuit-Switched Voice Codecs in a Packet Switched, Wireless World with Enhanced Speech-Processing Software
   • Objection Two: Security for WiMAX VoIP
   • Objection Three: CALEA and E911
   • E911
   • Architecture of WiMAX VoIP: Putting It All Together
   • WiMAX VoIP Phones
   • Conclusion

    

9. WiMAX IPTV
   • WISP WiMAX Triple Play?
   • IPTV: Competing with Cable TV and Satellite TV
   • How It Works
   • Bandwidth and Compression Technologies
   • Other Video Revenue Streams
   • Video on Demand
   • Personal Video Recorder
   • Conclusion: A TV Station Called WiMAX
10. Regulatory Aspects of WiMAX
    • Operate Licensed or Unlicensed?
    • Current Regulatory Environment
    • Power Limits
    • WiMAX 802.16 - Its Relationship to FCC Part 15, Section 247
    • 802.16 - FCC Part 15, Section 407
    • Interference
    • Laws on Antennas and Towers
    • New Unlicensed Frequencies
    • Unlicensed Frequencies Summary
    • The FCC New Spectrum Policy
    • Four Problem Areas in Spectrum Management and Their Solutions
    • Recent Statements from the FCC on Broadband and Spectrum Policy
    • Conclusion

     

11. How to Dismantle a PSTN: The Business Case for WiMAX
    • Overview
    • Immediate Markets
    • Secondary Markets
    • Demographics
    • Services
    • Frequency Band Alternatives
    • Capital Expense (CAPEX) Items
    • CPE Equipment
    • Operating Expense (OPEX) Items
    • The Business Case
    • Future Markets
    • Economics of Wireless in the Enterprise
    • You Can "Take It with You When You Go"
    • Economics of WiMAX in Public Networks
    • Economic Benefits of Ubiquitous Broadband
    • Conclusion

     

12. Projections: WiMAX Is a Disruptive Technology
    • Disruptive Technology
    • How WiMAX Will Disrupt the Telephone Industry
    • Cheaper
    • Simpler
    • Smaller
    • More Convenient to Use
    • Deconstruction
    • Goetterdammerung or Creative Destruction in the Telecommunications Industry

EDGE (Enhanced Data Rate For GSM Evolution), GSM (Global System for Mobile Communication), EVDO (Evolution Data Optimized), etc.: It takes a notebook to keep track of the acronyms for mobile technologies today, let alone to learn about the features each one offers. Add the new mobile WiMAX (Worldwide Interoperability For Microwave Access) specification, officially known as 802.16e, to the mix and the situation becomes even more bewildering.

So, what exactly is mobile WiMAX, and what does it mean for road warriors? Like so many technologies before it, mobile WiMAX is either the up-and-coming killer specification or the most over-hyped concept in technology today, depending on who’s talking.

WiMAX To Go

WiMAX 802.16e is the mobile variant of a wireless, broadband communications technology that works over greater distances than fixed (receiver stays in one place) Wi-Fi and at faster speeds than the mobile broadband offered in some cell phones. With mobile WiMAX, users will enjoy peak data rates of up to 5Mbps (megabits per second) over distances of several miles. (Theoretically, WiMAX operates at 30Mbps over distances of up to 30 miles, but experts say real-world limitations make such transmissions unlikely). Compare this to 300 feet or less with most Wi-Fi and peak data rates of 2Mbps with cellular, and you begin to see what the excitement’s all about.

With mobile WiMAX, proponents say, one would realize the speed of a stationary broadband connection with the mobility of a cell phone. The possibilities are tremendously exciting. Road warriors with notebooks or automobiles that are mobile WiMAX-enabled (either an embedded chip or an inserted card) could....