Showing papers on "Control communications published in 2001"

Integrated security and communications system with secure communications link

Abstract: An integrated security and communications system combines a security system to either or both of a telephone system interface and a data interface. Users have access to voice-mail or other PBX-type telephone functions, many or all of which can be accessed not only at telephone sets, but also at keypads of the security system. Data functions such as electronic mail and possible partial or full World Wide Web access may also be provided at the keypads, as well as at connected personal computers or computer terminals. The system keypads may be enhanced to better accommodate some of the added functions. A central communications station could be used to maintain secure, shared private key encrypted communications with each premises system, using a redirector arrangement or relay to allow each premises system to communicate securely with a central monitoring station and with other systems. The secure communications system could be used without a security system to allow secure computer-to-computer communications.

Wireless Flexible Personalized Communications

Abstract: From the Publisher: Mobile Communications are evolving from second generation systems towards a third generation, capable of accommodating a variety of services in different environments at various bit rates Communications are becoming increasingly flexible, to account for the progressive migration towards third generation systems (UMTS) and their merging into fourth generation systems, and personalised due to the unique opportunities offered by emerging radio communication technologies COST is a European forum for co-operative scientific research COST action 259 in the field of telecommunications involves 250 researchers in 15 technical areas from 80 organisations in 18 countries, covering both academia and industry The aim of COST Action 259 was to increase the knowledge of radio system aspects for flexible personalised communications which are capable of delivering different services and exploiting different bandwidths The objective was also to develop new modelling techniques and related planning tools, in order to guarantee continuity (and quality) of services, delivered by networks of widely different capabilities and structures, across a number of different environments Furthermore, in the perspective of a fast evolving demand for interfacing the photonic (glassfibre) network with the wireless network, investigations on the mutual interactions were also carried Provides excellent insight into the evolution of second generation systems to third and beyond Written by leading european researchers throughout academia and industry, including Deutsche Telekom, Ericsson, Bosch Telecom and Telefonica Presents the latest research in mobile communications in the three key areasof radio systems aspects, antennas and propagation and networks aspects This text offers the cutting edge of wireless communications, and is essential reading for researchers, and engineers in the industry, as well as offering up to date background reading for students of this rapidly evolving topic

Wireless Video Communications: Second to Third Generation and Beyond

Abstract: From the Publisher: "Bridging the gap between the video compression and communication communities, this unique volume provides an all-encompassing treatment of wireless video communications, compression, channel coding, and wireless transmission as a joint subject. WIRELESS VIDEO COMMUNICATIONS begins with relatively simple compression and information theoretical principles, continues through state-of-the-art and future concepts, and concludes with implementation-ready system solutions. This book's deductive presentation and broad scope make it essential for anyone interested in wireless communications. It systematically converts the lessons of Shannon's information theory into design principles applicable to practical wireless systems. It provides in a comprehensive manner "implementation-ready" overall system design and performance studies, giving cognizance to the contradictory design requirements of video quality, bit rate, delay, complexity error resilience, and other related system design aspects. Topics covered include*information theoretical foundations*block-based and convolutional channel coding*very-low-bit-rate video codecs and multimode videophone transceivers*high-resolution video coding using both proprietary and standard schemes*CDMA/OFDM systems, third-generation and beyond adaptive video systems. WIRELESS VIDEO COMMUNICATIONS is a valuable reference for postgraduate researchers, system engineers, industrialists, managers and visual communications practitioners. About the Authors Lajos Hanzo has enjoyed a prolific 24-year career during which he has held various research and academic positions in Hungary, Germany, and the United Kingdom. He has coauthored five bookson mobile radio communications and published over 300 research papers on a variety of topics. Dr. Hanzo's research interests cover the entire spectrum of mobile multimedia communications, including voice, audio, video and graphic source compression, channel coding, modulation, networking and the joint optimization of these system components. He holds a chair in communications in the Department of Electronics and Computer Science at the University of Southampton, England, and he is a consultant to Multiple Access Communications Ltd. Peter J. Cherriman graduated in 1994 with an M.Eng. In information engineering from the University of Southampton. Since 1994, he has been with the Department of Electronics and Computer Science at the University of Southampton, where he completed his Ph.D. in mobile video networking. Dr. Cherriman is working on projects for the Mobile Virtual Centre of Excellence, U.K. His current areas of research include robust video coding, microcellular radio systems, power control, dynamic channel allocation, and multiple access protocols. Jurgen Streit received his Dipl.-Ing. in electronic engineering from the Aachen University of Technology, Germany, in 1993. Since 1992 he has been with the Department of Electronics and Computer Science at the University of Southampton, working with the Mobile Multimedia Communications Research Group. Dr. Streit earned a Ph.D. in image coding, and he is currently working as a software consultant."

Unified communications system

Abstract: A unified communications system that promotes communications using an Internet protocol communications platform that receives telephone, fax, e-mail, and documentary information to aggregate that information for access at a single location by any of various devices controlled by a person to whom the communications are directed. The unified communications system employs an IMAP 4 message store for e-mail, fax, voice mail, and document files and can access LDAP-compatible databases for user information (e.g., address books). Subscribers to a unified communications service powered by the unified communications system can access messages by telephone; through a standard Web browser; through a wireless device, leveraging WAP to read and reply to messages and SMS for notifications; and, additionally, via Internet phones and other Internet Access Devices (LADs). Users can also store and access files on network databases and folders via the Web browser interface.

Method and apparatus for performing wire speed auto-negotiation

Abstract: Auto-negotiation with a communication partner includes downgrading a set of advertised communications capabilities, e.g., IEEE 802.3 capabilities, when a link with the communication partners fails to support an advertised communications capability, e.g., wire-speed. One operation includes: (1) advertising a first set of communications capabilities; (2) arriving at a first common set of communications capabilities based upon the first set of communications capabilities; (3) attempting to establish a link according to the first common set of communications capabilities; (4) failing to establish a link according to the first common set of communications capabilities; (5) downgrading the first set of communications capabilities to a second set of communications capabilities; (6) advertising the second set of communications capabilities; (6) arriving at a second common set of communications capabilities according to the second common set of communications capabilities; and (7) attempting to establish a link according to the second common set of communications capabilities.

Automatic traffic and quality of service control system for communications networks

Abstract: The present invention is directed to a system for controlling the quality of service and availability in a communications network. The system includes a processor which samples queue state information from selected intermediate nodes in the network and processes the queue state information to produce a traffic intensity map. The processor includes memory for storing said traffic intensity throughout the network as a traffic intensity surface and is configured to use the traffic intensity surface to control traffic in the network.

Method and system for authentication of units in a communications network

Abstract: A method of granting, to a user communications device, access to a service provided by a plurality of service communications devices where an access key code is generated during an initial communications session between the user communications device and one of the service communications devices. The established access key code is subsequently stored in the user communications device and made available to the service communications devices for use in subsequent communications sessions between the user communications device and any one of the service communications devices. The invention further relates to a communications system and a user communications device.

Mobile communication system for location aware services

Abstract: A communications network infrastructure (200) is disclosed The infrastructure(200)is configured to more effectively service mobile devices (280) having wireless communications links (220) to the communications network (200)

Secure area communication arrester

Abstract: A system whereby a short-range base station (pico-station) controls mobile communications within a limited area, such as a theater or airport, where the use of mobile phones or other communications devices is annoying or hazardous. The pico-station determines if mobile communications devices under its control are equipped to operate in a silent-communications mode. Within the limited area, calls to and from the communications devices are either blocked or restricted to silent operation, depending on the capabilities of the communications device.

Method and system for dynamic service classification and integrated service control

Abstract: A system and method for providing integrated control of communication services, which includes an Integrated Services Controller (ISC), which is configured to establish communications with any numbers of communications networks, such as The Public Switched Telephone Network or the Internet. Communications may be established with one or more communications services, which in turn provide classification criteria which includes variable parameters that define a capability of a particular communications service. Also received may be a Message Registration List (MRL), which registers with the ISC messages in which a particular communications service has a notification interest. Through these communications, the ISC may be configured to provide a centralized processing for messages received from various system entities so as to apply intelligent prioritization rules for each message processed.

Automatic management systemfor communications networks

Abstract: An automatic control system for monitoring and controlling bandwidth and workload in a communications network.

Method for economically sub-optimizing interactions in data communications network environments, and a device according to the method

Abstract: A method for sub-optimizing interactions in data communications network environments. The method includes the steps of deeming certain activities which involve interactions between a user and a data communication system to be less important than other activities, and introducing a degradation in response time for the interactions belonging to the certain activities deemed less important compared to a response time for the interactions belonging to the other activities.

Methods and apparatus for allocating resources in a communications system

Abstract: The invention provides a system including methods and apparatus that adjust usage of one or more resources of a data communications channel. The system can negotiate a current resource setting for usage of the resource of the communications channel and can perform communications on the communications channel using the resource. The resource can be, for example, a bandwidth setting of the communications channel. Periodically, the system can renegotiate a new value for the current resource setting upon detecting a negotiation event during performance of communications on the communications channel using the resource. One such negotiation event is an indication that an accrued usage cost of the resource of the communications channel substantially equals or exceeds a cost to renegotiate the current resource setting. Another negotiation event indicates that an actual resource setting of the communications channel substantially equals or exceeds the current resource setting for the communications channel. Another negotiation event indicates that a data communications device using the bandwidth setting of the communications channel has requested to negotiate a new value for the current resource setting of the communications channel.

Methods, systems and computer program products for providing data from network secure communications in a cluster computing environment

Abstract: Methods, systems and computer program products provide secure communications over a network in a distributed workload environment having target hosts which are accessed through a distribution processor by a common network address. Secure communications are provided by routing both inbound and outbound communications with target hosts which are associated with a secure network communication through the distribution processor. Both inbound and outbound secure network communications are processed at the distribution processor so as to provide network security processing of communications from the target host and network security processing of communications to the target host.

System and method for integrated communications, funds transfers, confirmation and e-commerce applications

Abstract: A system and method for managing financial and other data in a communications network designed to overcome language, cultural, education, financial and other barriers, is disclosed. The communications network includes one or more communication and transaction centers in the form of web-enabled kiosks, automatic teller machines, personal computers, television set-up boxes, customer activated terminals and the like, for transmitting electronic funds transfer and messaging data.

Method for controlling additional service functions in a communications network, as well as an associated communications network and an associated program

Abstract: A method for controlling additional service functions in a communications network, as well as an associated coujmincations network and an associated program, wherein data is transmitted between a number of terminals in the communications network using at least one identifier which is used to identify a connection in accordance with the first connection model, the connection identifier being converted to a least one indentifier which is used to identify a connection according to a second connection model which is provided for controlling call distribution from a computer so as to allow various international Standards to be satisfied at the same time.

Infrastructure-based communications network

Abstract: A method and apparatus for providing improved communications comprising the step of providing an infrastructure-based communication network, connecting said infrastructure-based communications network to a primary communications system and introducing users of personal communication devices to said infrastructure-based communications network. The step of providing an infrastructure-based communications network includes the steps of adapting existing infrastructure devices to relay electromagnetic radiation that is propagated by the primary communications system. The adapted infrastructure devices are selected from the group consisting of manhole covers, sewer gratings, ventilation gratings, storm drain gratings, utility poles, lighting poles, telephone junction boxes and traffic signal junction boxes. An apparatus for providing improved communications within an urban environment comprises a plurality of urban infrastructure-based devices adapted to interact with a primary communications system. The primary communications system is selected from a group consisting of existing wireless communications networks and wireless Internet service provider networks.

Cellular control channel communications for distribution automation applications

Abstract: The author describes a system that provides a power network communications software package, which interfaces a series of low cost two-way radio equipped RTUs, targeting electric utility distribution automation solutions.

Wireless based system for managing the use of wireless communications and micoprocessor-based systems

Abstract: A short-range wireless communications system is used to manage long-range wireless communications and microprocessor-based activity within its operating range. This management includes forbidding long-range wireless communications and microprocessor-based activity during certain times, with the possibility of allowing only emergency long-range wireless communications. This management also includes allowing long-range wireless communications and microprocessor-based activity during other times. The short-range wireless communications system runs in parallel with the long-range wireless communications system. The short-range wireless communications system gives instructions to the microprocessor in the long-range wireless communications system and microprocessor-based activity as to whether the long-range wireless communications or microprocessor-based activity can continue or must be interrupted for a period of time. This management is limited by the range of the short-range wireless communications system, and is thus highly suitable for use in controlling long-range wireless communication and microprocessor-based activity by passengers in airplanes, patrons of theatres, diners in restaurants, attendees in business meeting rooms, and the like.

Free-space links address the last-mile problem

Abstract: Wireless optical-mesh networks coupled with microwave communications are helping to overcome the bottleneck in metro/access communications.

Mapping control functions of a plurality of communication installations into a single logical interface

Abstract: The present invention relates to a distributed communication system including server for executing communications applications and service features for communications installations. Preferably, the system is provided as a private communication system, wherein the communications installations are connected to one another via a network preferably an IP-oriented. The communications installations each have a local software interface which can be used by the server to control the functionality of the communications installation. A central software interface in the server maps the respective local software interfaces of the individual communications installations in a single superordinate logical software interface. The central software interface is used by the communications applications to access the resources of the individual communications installations.

Towards a Global 3G System: Advanced Mobile Communications in Europe

Abstract: From the Publisher: Here's a valuable inside look at cutting-edge R&D and emerging high-potential business opportunities in the wireless communications industry. Based on results from the mobility and personal communications networks area of the Advanced Communications and Technology Systems (ACTS) program in Europe, the book takes you into the future of wireless communications and the establishment of universal mobile telecommunication systems (UMTS). Featuring contributions from industry and academic leaders in Europe, the book examines third generation (3G) topics such as the need for high data rates, spectrum efficiency and bandwidth, as well as issues related to terrestrial air interfaces, satellite air interfaces, satellite network improvements, and the continued development of enabling technologies. A host of UMTS technology projects are discussed in detail, including terrestrial wireless broadband projects such as Magic Wand, MEDIAN, AWACS, and SAMBA; wireless access system projects such as CABSINET and CRABS; satellite UMTS and broadband projects such as SINUS, INSURED, TOMAS, and SECOMS/ABATE; and projects for improving current personal wireless service such as RAINBOW, RAISIN, STORMS, ASPECTS, EXODUS, and FRANS. With links to key wireless communications industry resources, and a look at the objectives and impact of service and applications projects currently underway, this book helps you take full advantage of emergent opportunities in mobile personal communications technologies. Software Included! A CD-ROM contains multimedia presentations of project trials.

Standardised communications in substations

Abstract: There have been a number of innovations with intelligent electronic devices (IEDs) in the substation, offering communications capabilities with IEDs being available from a number of vendors. These IEDs are now becoming a common feature of the substation and an obvious benefit to the user will be interoperability between devices from different vendors. Early IEDs provided communications capabilities that were proprietary to the device manufacturer, and thus presented huge problems to the "system integrators". When building systems the integrator often had incompatibilities with the physical communications interfaces, the protocol itself, the addressing of information, the presentation of information-to name but a few. This paper gives details of a way forward to achieve interoperability-with the use of the standard series IEC 61850 "Communication networks and systems in Substations". The paper examines the subjects of: the IEC 61850 standard-its origin, an overview of the standard itself, and its current status; the status of the "substation automation communications demonstration initiative" project in the USA; and the status and findings of the European pilot projects OCIS and PINOCIO.

Radio communications card and radio communications equipment

Abstract: PROBLEM TO BE SOLVED: To provide a radio communications card which is suitable for temporal rental services SOLUTION: The constitution is that the radio communications card is provided with a rechargeable power source battery, counts cumulative time in use and automatically finishes the communications between a terminal device equipped with it and other communications equipment when the accumulated time in use concerned is above a prescribed time set A user of the card can not change for his convenience the time at which the radio communications is possible to realize through management of time by providing the card with a time management means

Application of Real Options to Strategic Management of Military Satellite Communications

Abstract: This paper presents an overview of real options valuation techniques, and describes how MILS ATOM projects can be evaluated using real options. Definitions of key concepts involved in real options as well as real options examples from other industries are discussed first, followed by a description of five types of options with each type paired with a MILS ATCOM example. The mechanics of conducting a real options evaluation are explained, including required data and inputs particularly as applied in a MILS ATCOM context. The paper concludes with a discussion of the challenges for the DoD in implementing real options valuation techniques. Budgetary pressures have changed the military space communications philosophy from "all communications services, any time, any place" to "right communications service, right time, right place." This new philosophy, described in the current Military Satellite Communications (MILSATCOM) Architecture documents [1], would require a somewhat different approach to MILSATCOM services than has been employed in the past. This new philosophy implies having just enough communications services to meet the need at any given time. Many concepts and systems have been proposed to achieve the "right communications service, right place, right time" philosophy. Such ideas as government anchor tenancy on upcoming commercial satellite systems, commercial leasing of satellite communications services on demand, and Civil Reserve Air Fleet-like arrangements [2] with satellite communications service providers are discussed frequently. But what has been largely absent from the discussion is how to properly value each of these ideas. Real options provides a useful valuation methodology for inherently risky projects such as those being considered to meet future MILSATCOM needs.

Distributed communication system

Abstract: The present invention relates to a distributed communication system including server for executing communications applications and service features for communications installations Preferably, the system is provided as a private communication system, wherein the communications installations are connected to one another via a network preferably an IP-oriented The communications installations each have a local software interface which can be used by the server to control the functionality of the communications installation A central software interface in the server maps the respective local software interfaces of the individual communications installations in a single superordinate logical software interface The central software interface is used by the communications applications to access the resources of the individual communications installations

Method, system and device for granting access to a service

Abstract: A method of granting, to a user communications device, access to a service provided by a plurality of service communications devices where an access key code is generated during an initial communications session between the user communications device and one of the service communications devices. The established access key code is subsequently stored in the user communications device and made available to the service communications devices for use in subsequent communications sessions between the user communications device and any one of the service communications devices. The invention further relates to a communications system and a user communications device.

Apparatus and Method of trading right to use electric communications equipment and apparatus and method of assigning capacity of electric communications equipment

Abstract: To provide an apparatus for trading a right to use electric communications equipment, which can permit an electric communications equipment user, who is renting electric communications equipment from a communication company, to share electric communications equipment capacity with other electric communications equipment users and the communication company when there is a temporary excess or a deficiency of electric communications equipment capacity. The apparatus comprises a seller terminal ( 300 ) for accepting a consignment to sell a right to use electric communications equipment corresponding to a surplus electric communications equipment capacity a first registered user has contracted with a communication company, a buyer terminal ( 400 ) for accepting a consignment to buy a right to use electric communications equipment corresponding to a shortage of electric communications equipment capacity a second registered user has contracted with a communication company, and an electric-communications-equipment use-right brokerage unit ( 900 ) for intermediating between the consignment to sell the right to use electric communications equipment of the first registered user and the consignment to buy the right to use electric communications equipment of the second registered user to conclude transfer of the right to use electric communications equipment.

Tactical High Frequency Communications in the Land Arena - The Current State of the Art

Abstract: : This report seeks to inform the reader as to the state of the art' of tactical HF data communications. HF Communications provide a large utility in the military arena where ad-hoc communications are required with minimal assets and planning. A review of the relevant HF standards is performed, with a discussion on the technical aspects and impacts. A product review is also performed, which informs the reader as to the devices currently available on the market. Finally some recommendations are made as to the standards to use and as to what is happening within the HF market.