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In today's vast world of global commerce with users that are more nomadic than ever, the need for reliable, secure, and efficient access technologies is rapidly increasing. IP Location provides you with a guided tour of location determination, tackling this new technology head on and addressing all aspects of location management, delivery, and conveyance within IP networks. Covering important real-world applications such as emergency (911) services, asset tracking, call routing, navigation, and staff location in hot desk environments, this book gives you all the information you need to fully support this cutting-edge technology.

• Learn how location information is produced, transported, and consumed on the Internet
• Understand the semantics and constructs of the HELD and FLAP protocols
• Discover the three roles of the presence model--presentity, presence service, and watcher
• Explore how the Access Location Entity (ALE) helps determine location within particular types of networks
• Examine in detail the Location Information Server (LIS) including its different types and interfaces
• Determine IP location for devices connected to all types of networks including WiFi and WiMAX
• Get details on location determination and acquisition techniques for residential broadband networks such as DSL and cable
• Find out about privacy controls and considerations for Internet location

About the Authors

Martin Dawson (BEng-elec, MEngSc) is the chief product architect of the Andrew Geometrix Mobile Location Center development team based in Wollongong, Australia. Martin Dawson's engineering career has spanned 29 years, from work in real-time embedded microprocessor control systems (the early days of local area network deployments) to paying his dues in a university network admin role. The past 19 years have been spent in networking and telecommunications. This includes a period of time with British Telecom Research Laboratories in the UK developing Service Creation Environments for Intelligent Networks (IN), and with Telstra, where he also developed IN services. Prior to joining Andrew Corporation, he worked for Nortel for 11 years developing a wide range of solutions with a focus on wireless IN services and the development of cellular location systems for emergency and commercial services.

He is currently active in forums for cellular and IP location technologies, and acts as consultant to industry, government, regulatory authorities, and emergency agencies. He is a member of the North American National Emergency Number Association (NENA) and has contributed to the working group focused on the development of solutions for VoIP emergency services.

James Winterbottom has over 20 years of experience in the Telecom industry and is currently a Senior Product Architect with Andrew Corporation's Geometrix Mobile Location Center. In recent years, James has worked in the cellular location industry, but throughout his career he has developed an expertise in CDMA provisioning and management systems, as well as intelligent network services. Currently, James is active in standards forums for IP location technologies, and acts as a consultant to industry, government, and regulatory authorities. He is a member of the North American National Emergency Number Association (NENA) and is active in NENA working groups concerned with determining and using location to support VoIP emergency services. He is also an active participant in the IETF, developing solutions to address the problems of determining, acquiring, and conveying location in IP networks. James is the official liaison from the ESIF Next Generation Emergency Services (NGES) working group to the IETF Geopriv and ECRIT working groups.

Martin Thomson is an engineer with Andrew Corporation. He has spent five years developing cellular wireless products for Nortel and Andrew Corporation, in particular the Mobile Location Center (MLC). Since 2004, Martin has been working in research for IP location and has produced a number of specifications, including several IETF Internet drafts. Martin has also been involved in the development of prototype systems for location in IP networks.