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Geographic Location in the Internet discusses how to find the location of mobile devices in the wireless Internet, specifically those that involve the determination of the geographic location of mobile devices. 2G systems of GSM, GPRS and 3G systems of UMTS and cdma2000, and other link technologies and an extensive description on how numerical location of the mobile can be tracked real-time also are discussed. Geographic Location in the Internet covers Session Initiation Protocol (SIP) related geographic location tracking as it relates to multimedia applications. The recent application-layer protocols for communicating the location information from the mobile device to the applications such as multimedia applications are also covered. Mobile Location Protocol (MLP) of the Location Information Forum (LIF) allows access of the geographic location information to the applications using Web protocol of HTTP. The Wireless Application Protocol (WAP) forum also defined a technical specification for location-based services, which is discussed in detail. A detailed analysis of the location update mechanisms covers various technical issues in location database design, and protocols are compared using simulations and providing provocative conclusions. Geographic search engines utilizing location data that enable users to make location related queries on the Web are also covered. The book has exclusive coverage of the technical aspects of privacy such as linkability, credentials, pseudonyms, anonymity and identity management. Different scenarios are defined for the targets, owners, location servers and location data sources and the privacy implications are emphasized.

Geographic information systems. --- Wireless communication systems. --- Internet. --- Computer engineering. --- Computer Communication Networks. --- Electrical Engineering. --- Electrical engineering. --- Computer communication systems. --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Electronic data processing --- Network computers --- Electric engineering --- Engineering --- Distributed processing

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With the increasing market penetration of cellular telephones, the number of E-911 calls placed by cellular telephones has grown cons- erably. This growth in E-911 calls led to a 1996 FCC ruling requiring that all cellular, PCS, and SMR licensees provide location information for the support of E-911 safety services. The provision of such location information is to be implemented in two phases. Phase I, whose deadline has already been passed, requires that wireless carriers relay the caller’s telephone number along with location of the cell site and/or sector se- ing the call, to a designated Public Safety Answering Point (PSAP). This information allows the PSAP to return the call if disconnected. Phase II, to be completed by October 1, 2001, is much more stringent and requires that the location of an E-911 caller be determined and reported with an rms location accuracy of 125 m in 67% of the cases. The applications of wireless location technology extend well beyond E-911 services. Location information can be used by cellular telephone operators themselves for more effective management of their radio - sources, so as to achieve greater spectral efficiencies. Resource m- agement algorithms such as hand-offs between cell sites, channel assi- ments, and others can all benefit from subscriber location information. Location information obtained from vehicular based cellular telephones can be used as an input to Intelligent Transportation Systems (ITS), and in particular traffic management and traveler information systems.

Code division multiple access. --- Cell phone systems. --- Mobile communication systems. --- Automatic tracking. --- Computer engineering. --- Computer Communication Networks. --- Electrical Engineering. --- Electrical engineering. --- Computer communication systems. --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Electronic data processing --- Network computers --- Electric engineering --- Engineering --- Distributed processing

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This book presents revised full versions of papers contributed to UK Workshops on Multi-Agent Systems, UKMAS, during 1996 and 2000. From the early days of MAS research, the UK community has been a particularly productive one with numerous key contributions. The 15 papers by internationally reputed researchers deal with various aspects of agent technology, with a certain emphasis on foundational issues in multi-agent systems.

Intelligent agents (Computer software) --- Artificial intelligence --- Computer Science --- Engineering & Applied Sciences --- Computer science. --- Computer communication systems. --- Artificial intelligence. --- Computer Science. --- Artificial Intelligence (incl. Robotics). --- Computer Communication Networks. --- Artificial Intelligence. --- AI (Artificial intelligence) --- Artificial thinking --- Electronic brains --- Intellectronics --- Intelligence, Artificial --- Intelligent machines --- Machine intelligence --- Thinking, Artificial --- Bionics --- Cognitive science --- Digital computer simulation --- Electronic data processing --- Logic machines --- Machine theory --- Self-organizing systems --- Simulation methods --- Fifth generation computers --- Neural computers --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Network computers --- Distributed processing

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Due to the explosive global growth in the number of mobile subscribers, as well as the growth predicted in the mobile data segment, the need for improved spectrum efficiency on the radio interface becomes more and more important. Frequency hopping (FH) is an effective method for improving the spectrum efficiency. One of the advantages of FH is that it can be combined with other spectral efficiency improving features like power control, handover and reuse partitioning. Performance Enhancements in a Frequency Hopping GSM Network covers FH and some of the additional features in detail. It begins with an in-depth description of the basic concept of FH on link level as well as on system level. Different methods have been used for analysis, such as link level simulations, network level simulations and classic tele-traffic theory. Special features of Performance Enhancements in a Frequency Hopping GSM Network: Combines the practical experiences of operator and vendor with more theoretical research methods. An in-depth treatment of prevailing problems in GSM networks; Presentation of a new method, computer-aided network design (CAND), which has been developed to analyse the complex network structures of a GSM network. CAND provides the possibility for more realistic performance evaluations than conventional methods; Provides GSM-specific analysis of functionality improvements in power control, discontinuous transmission, and several handover algorithms; Explanation of the quality and capacity gains of features like the combination of FH and reuse partitioning, referred to as intelligent frequency hopping; A frequency planning method for FH GSM networks is presented. This method exploits the benefits from FH directly in the allocation process, increasing the overall frequency plan.

Gsm's --- Electrical engineering. --- Data structures (Computer science). --- Computer communication systems. --- Electrical Engineering. --- Data Structures and Information Theory. --- Computer Communication Networks. --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Electronic data processing --- Network computers --- Information structures (Computer science) --- Structures, Data (Computer science) --- Structures, Information (Computer science) --- File organization (Computer science) --- Abstract data types (Computer science) --- Electric engineering --- Engineering --- Distributed processing --- Global system for mobile communications. --- GSM communications --- Cell phone systems --- Context-aware computing

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High-Performance Data Network Design contains comprehensive coverage of network design, performance, and availability. Tony Kenyon provides the tools to solve medium- to large-scale data network design problems from the ground up. He lays out a practical and systematic approach that integrates network planning, research, design, and deployment, using state-of-the-art techniques in performance analysis, cost analysis, simulation, and topology modeling.The proliferation and complexity of data networks today is challenging our ability to design and manage them effectively. A new generatio

Computer networks. --- Computer network protocols. --- Computer networks --- Computer network architectures. --- Standards. --- Architectures, Computer network --- Network architectures, Computer --- Protocols, Computer network --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Computer architecture --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Electronic data processing --- Network computers --- Distributed processing