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Communications Magazine, IEEE

Issue 7 • Date July 1998

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Displaying Results 1 - 15 of 15
  • Mobile Software Agents for Telecommunications

    Publication Year: 1998 , Page(s): 24 - 25
    Cited by:  Papers (7)
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  • Mobile agents and security

    Publication Year: 1998 , Page(s): 76 - 85
    Cited by:  Papers (31)  |  Patents (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3718 KB)  

    The practicality of mobile agents hinges on realistic security techniques. Mobile agent systems are combination client/servers that transport, and provide an interface with host computers for, mobile agents. Transport of mobile agents takes place between mobile agent systems, which are located on heterogeneous platforms, making up an infrastructure that has the potential to scale to the size of any underlying network. Mobile agents can be rapidly deployed, and can respond to each other and their environment. These abilities expose flaws in current security technology. This article surveys the risks connected with the use of mobile agents, and security techniques available to protect mobile agents and their hosts. The inadequacies of the security techniques developed from the information fortress model are identified. They are the result of using a good model in an inappropriate context (i.e. a closed system model in a globally distributed networking computing base). Problems with commercially available techniques include: (1) conflicts between security techniques protecting hosts and mobile agents, (2) inability to handle multiple collaborative mobile agents, and (3) emphasis on the credentials of software instead of on the integrity of software to determine the level of trust. View full abstract»

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  • Prospects for Broadband Deployment in a Deregulated Environment

    Publication Year: 1998 , Page(s): 86
    Cited by:  Papers (1)
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  • A broadband wireless packet technique based on coding, diversity, and equalization

    Publication Year: 1998 , Page(s): 110 - 115
    Cited by:  Papers (4)  |  Patents (2)
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    The choice of an air interface technique to enable broadband wireless communications has been the subject of extensive research. This article describes an air interface for 2 Mb/s wireless mobile packet data services. The key enabling technique is a reduced-complexity broadband equalizer which provides a delay spread tolerance of up to 50 μs. The proposed air interface emphasizes high packet throughput, robust performance, low packet overhead, and low-cost low-power VLSI implementation. View full abstract»

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  • Standardization on multimedia communications: computer-telephony-integration-related issues

    Publication Year: 1998 , Page(s): 105 - 109
    Cited by:  Papers (1)  |  Patents (13)
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    Computer-telephony integration (CTI) has been developed since the 1960s. It is one of the major emerging multimedia communications applications. It provides enhanced telecommunications services controlled by a computer, that is by integrating the call handling capabilities of PBXs and the data processing capabilities of computers. CTI applications have become more popular and widespread with the rapid and deep penetration of personal computers and the dramatic growth of the Internet since the mid-1990s. CTI applications are being enhanced by means of more integration with Internet capabilities. Several standardization organizations and fora/consortia are developing standards/specifications for CTI in order to cope with the growing demand for multimedia communications. This article describes a brief historical sketch and the state of the art of CTI-related standards and specifications, which are still being developed View full abstract»

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  • Mobile software agents: an overview

    Publication Year: 1998 , Page(s): 26 - 37
    Cited by:  Papers (108)  |  Patents (1)
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    The anticipated increase in popular use of the Internet will create more opportunities in distance learning, electronic commerce, and multimedia communication, but it will also create more challenges in organizing information and facilitating its efficient retrieval. From the network perspective, there will be additional challenges and problems in meeting bandwidth requirements and network management. Many researchers believed that the mobile agent paradigm (mobile object) could propose several attractive solutions to deal with such challenges and problems. A number of mobile agent systems have been designed and implemented in academic institutions and commercial firms. However, few applications were found to take advantage of the mobile agent. Among the hurdles facing this emerging paradigm are concerns about security requirements and efficient resource management. This article introduces the core concepts of this emerging paradigm, and presents an account of current research efforts in the context of telecommunications. The goal is to provide the interested reader with a clear background of the opportunities and challenges this emerging paradigm brings about, and a descriptive look at some of the forerunners that are providing experimental technologies supporting this paradigm View full abstract»

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  • Mobile agents can benefit from standards efforts on interagent communication

    Publication Year: 1998 , Page(s): 50 - 56
    Cited by:  Papers (2)
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    On the road to the future success of mobile agents, we believe that interagent communication is an issue that has not been adequately addressed by the mobile agents community. Supplementing mobile agents with the ability to interact with other mobile or static agents, or agentified information sources is a necessity in the vastly heterogeneous arena in which mobile agents are called to compete. Thus, an agent communication language should be interpreted as a tool with the capacity to integrate disparate sources of information. We argue that mobile agents can benefit from current standards efforts on agent communication since the focus of such work is to address heterogeneity by defining a “common language” for communicating agents. We discuss ongoing research on agent-to-agent communication and present current standards efforts relevant to agent communication View full abstract»

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  • Enhancing telecommunications service engineering with mobile agent technology and formal methods

    Publication Year: 1998 , Page(s): 38 - 43
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1160 KB)  

    In order to be competitive, telecommunications service providers need new technologies that facilitate the rapid introduction of validated services in a cost-effective manner. Service engineering is a new discipline in which the telecommunications sector addresses the technologies and engineering processes required for service creation. Concurrent with these studies the development of applications in the Internet shows a new way to design telecommunications services based on the mobile agent paradigm. This brings new concepts that fit the requirements of service engineering. Therefore merging the approaches enables improvement of the service creation process. We illustrate this by presenting a framework for the formal design of telecommunications services using mobile agent technology complemented with formal methods. The contribution of this work is twofold. First, it relies on the Reference Model of Open Distributed Processing (RM-ODP) and shows how to adapt its concepts to agent orientation. Second, it provides agent-based service designers with validation and verification tools to state the quality of their specifications View full abstract»

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  • Public policy and private investment in advanced telecommunications infrastructure

    Publication Year: 1998 , Page(s): 87 - 92
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    The Telecommunications Act of 1996 was supposed to usher in a new era of competition in U.S. telecommunications markets in which advanced services were made available to all consumers. In this article, we discuss how policies designed to promote competition, investment, and universal deployment may conflict with each other. We do not believe that these conflicts are the inevitable consequences of conflicts between the objectives; we do, however, believe that there are inescapable conflicts between the specific policies being implemented in pursuit of these objectives View full abstract»

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  • A common multi-agent testbed for diverse seamless personal information networking applications

    Publication Year: 1998 , Page(s): 68 - 74
    Cited by:  Papers (5)  |  Patents (5)
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    This article describes the design and implementation of a unique cooperative agents testbed aimed at addressing diverse applications for the difficult problem of seamless personal information networking (SPIN). The real-world SPIN testbed is aimed at two difficult applications. Namely seamless messaging and intelligent network management. Both applications are agent-driven and share agent behavior, and the messaging agents rely on the network management device diagnostic agents for input. The article introduces both problem areas in a common testbed. The first-generation seamless messaging application is described in detail. User-centric seamless messaging assumes heterogeneous communication environments intended to support today's nomadic users. The prototype is introduced for the management of messages across distributed information networks. Its aim is to intercept, filter, interpret, and deliver multimodal messages, be they voice, fax, video, and/or e-mail messages. A user's personal communication agent is charged with delivering messages to the recipient regardless of their target messaging device-a telephone, pager, desktop, wireless laptop, or wireless phone. Personal communication agents classify and act on incoming messages based on their content. A secretary agent routes and tailors urgent messages appropriately to the device manager agent, which delivers the message to a device on which the user may be roaming or active. What makes the seamless messaging application unique is its approach to treating a message in a universal manner, and its ability to mediate between different messaging environments and devices, and to try to track and find the user View full abstract»

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  • Agent cloning: an approach to agent mobility and resource allocation

    Publication Year: 1998 , Page(s): 58, 63 - 67
    Cited by:  Papers (9)  |  Patents (10)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1404 KB)  

    Multi-agent systems are subject to performance bottlenecks in cases where agents cannot perform tasks by themselves due to insufficient resources. Solutions to such problems include passing tasks to others or agent migration to remote hosts. We propose agent cloning as a more comprehensive approach to the problem of local agent overloads. Agent cloning subsumes task transfer and agent mobility. According to our paradigm, agents may clone, pass tasks to others, die, or merge. We discuss the requirements of implementing a cloning mechanism and its benefits in a multi-agent system, and support our claims with simulation results View full abstract»

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  • Impact and preliminary results of telecommunications deregulation in Japan

    Publication Year: 1998 , Page(s): 100 - 104
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    Telecommunications deregulation in Japan has led to increased competition in telecommunications and expansion of the cable TV business. The number of telecommunication carriers has increased rapidly, resulting in the diversification of telecommunication services and reduction of charges. In the cable TV business, two multisystem operators appeared, and at the same time there was a dramatic increase in the number of cable TV subscribers. In this article the impact and preliminary results of telecommunications deregulation in Japan are outlined for the two cases of deregulation of interconnectivity among telecommunications carriers and that of the cable TV business View full abstract»

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  • Network awareness and mobile agent systems

    Publication Year: 1998 , Page(s): 44 - 49
    Cited by:  Papers (18)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1204 KB)  

    Most current computer applications are insensitive to changing network conditions. With the growing demand for wireless, satellite, and other highly volatile computer communications networks, however, applications that are robust in the presence of network volatility must be designed and built. Network-robust applications are of great interest in military situations today, and we expect that interest to grow in industrial and eventually consumer environments as well. Mobile agents are one way to realize such applications, especially when used in a wireless environment. This article discusses issues and results related to the problem of making computer applications network-aware and reactive to changing network conditions. It contains a short overview of our work on mobile agents as well as a tutorial on network sensing from the agent perspective. Some prototypes of network sensing systems and network aware mobile-agent applications are presented View full abstract»

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  • Data communications: where regulators clash with reality

    Publication Year: 1998 , Page(s): 96 - 99
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    Exponential advances in telecommunications and computer technology are driving the United States and the world into the information age, an age of instantaneous and massive communication all over the world. The rapid pace of new technology has made the old concept of the franchised telephone monopoly obsolete-an obsolescence confirmed and hastened by the 1996 Telecommunications Act. However, the new environment has also made traditional modes of telecommunications regulation obsolete. In this article, the authors argue that, in many key areas, regulators are actually standing in the way of delivery of the information age to many Americans. Traditional regulation has long controlled such key aspects of a regulated telephone company's operations as the introduction of new services and the price at which services must be offered to the public. These regulations, as applied to the last remaining heavily regulated telecommunications firms, the local exchange carriers, have reached the point where they are now counterproductive and anti-investment. Particularly in the world of data communications, where everything is new, regulators should strive to reduce regulatory burdens in order that the market forces which new technologies are unleashing can bring benefits to the entire public View full abstract»

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  • Alternative paths to broadband deployment

    Publication Year: 1998 , Page(s): 93 - 95
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (304 KB)  

    Widespread deployment of broadband technology may well be the next wave of the computer and communications revolutions. No one knows what technology, business plan, marketing idea, or combination of such ideas will best serve customers or succeed in the marketplace. As a result, government policy should not favor or disfavor any type of plan to provide these services. The computer industry provides a great model for widespread deployment of advanced technology with the government acting as a referee to ensure competitive service provision. In this way customers will get to decide which services they desire and are worth their support View full abstract»

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Aims & Scope

IEEE Communications Magazine covers all areas of communications such as lightwave telecommunications, high-speed data communications, personal communications systems (PCS), ISDN, and more.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Osman Gebizlioglu
Huawei Technologies