INSPEC 6028288 B9811-6250F-003 C9811-7410F-003
Doc Type: Journal Paper
Title: Impacts of mobile agent technology on mobile communication system evolution
Authors: Hagen, L.; Breugst, M.; Magedanz, T.
Affiliation: Tech. Univ. Berlin, Germany
Journal: IEEE Personal Communications
Vol: 5 Iss: 4 p. 56-69
Publisher: IEEE
Date: Aug. 1998
Country of Publication: USA
ISSN: 1070-9916 CODEN: IPCME7
CCC: 1070-9916/98/$10.00
Language: English
Treatment: Theoretical/Mathematical
Abstract: The development of third-generation mobile communication systems, such as UMTS, should be based on state-of-the-art middleware technologies. Today distributed object technology (DOT), such as OMG's CORBA, has gained considerable acceptance in the telecommunications environment, within the evolution of IN, TMN systems, and also in the context of UMTS design. Another new software technology, mobile agent technology (MAT), is gaining momentum in the field of telecommunications, too. In view of emerging agent standards (such as the OMG work on MASIF) which consider mobile agent technology as an important enhancement of DOT, studies on the impact of MAT on telecommunications systems (such as IN and TMN) are underway. This article discusses the potentialities of the use of emerging standard mobile agent platforms in the context of third-generation mobile communication systems, such as UMTS. (30 Refs.)
Classification: B6250F (Mobile radio systems); B6210C (Network management); B6210Q (Intelligent networks); C7410F (Communications computing); C6170K (Knowledge engineering techniques); C6110J (Object-oriented programming)
Thesaurus: Cellular radio; Intelligent networks; Object-oriented methods; Software agents; Telecommunication computing; Telecommunication network management; Telecommunication standards
Free Terms: Mobile agent technology; Mobile communication system evolution; Third-generation mobile communication systems; UMTS; Middleware technologies; Distributed object technology; IN; TMN systems; UMTS design; Software technology; Emerging agent standards; MASIF; DOT; MAT
 

INSPEC 6028286 B9811-6250F-001 C9811-7410F-001
Doc Type: Journal Paper
Title: The mobiware toolkit: programmable support for adaptive mobile networking
Authors: Angin, O.; Campbell, A.T.; Kounavis, M.E.; Liao, R.R.-F.
Affiliation: Columbia Univ., NY, USA
Journal: IEEE Personal Communications
Vol: 5 Iss: 4 p. 32-43
Publisher: IEEE
Date: Aug. 1998
Country of Publication: USA
ISSN: 1070-9916 CODEN: IPCME7
CCC: 1070-9916/98/$10.00
Language: English
Treatment: Application; Practical; Experimental
Abstract: Existing mobile systems (e.g., mobile IP, mobile ATM, and third-generation cellular systems) lack the intrinsic architectural flexibility to deal with the complexity of supporting adaptive mobile applications in wireless and mobile environments. We believe that there is a need to develop alternative network architectures from the existing ones to deal with the tremendous demands placed on underlying mobile signaling, adaptation management, and wireless transport systems in support of new mobile services (e.g., interactive multimedia and Web access). We present the design, implementation, and evaluation of mobiware, a mobile middleware toolkit that enables adaptive mobile services to dynamically exploit the intrinsic scalable properties of mobile multimedia applications in response to time-varying mobile network conditions. The mobiware toolkit is software-intensive and is built on CORBA and Java distributed object technology. Based on an open programmable paradigm developed by the COMET Group, mobiware runs on mobile devices, wireless access points, and mobile-capable switch/routers providing a set of open programmable interfaces and algorithms for adaptive mobile networking. (30 Refs.)
Classification: B6250F (Mobile radio systems); B6210C (Network management); B6210L (Computer communications); C7410F (Communications computing); C6110J (Object-oriented programming); C6150N (Distributed systems software); C5620W (Other computer networks)
Thesaurus: Adaptive systems; Cellular radio; Client-server systems; Internet; Land mobile radio; Network interfaces; Object-oriented programming; Open systems; Radio networks; Telecommunication computing; Telecommunication network management
Free Terms: Programmable support; Adaptive mobile networking; Adaptive mobile services; Mobiware toolkit; Mobile IP; Mobile ATM; Third-generation cellular systems; Internet; Network architectures; Mobile signaling; Adaptation management; Wireless transport systems; Interactive multimedia access; Web access; Mobile middleware toolkit; Mobile multimedia applications; CORBA; Java distributed object technology; Open programmable paradigm; COMET Group; Wireless access points; Mobile devices; Mobile-capable switch/routers; Open programmable interfaces; Algorithms
 

INSPEC 6011935 B9810-6210C-021 C9810-7410F-075
Doc Type: Journal Paper
Title: Design and implementation of TMN SMK system using CORBA ORB
Authors: Park, J.-T.; Ha, S.-H.; Hong, J.W.-K.
Affiliation: Sch. of Electron. & Electr. Eng., Kyungpook Nat. Univ., Taegu, South Korea
Journal: Journal of Network and Systems Management
Vol: 6 Iss: 2 p. 135-56
Publisher: Plenum
Date: June 1998
Country of Publication: USA
ISSN: 1064-7570 CODEN: JNSMEG
CCC: 1064-7570/98/0600-0135$15.00
Language: English
Treatment: Application; Practical
Abstract: In the telecommunications management network (TMN), the interworking of manager and agent requires the sharing of management information defined as shared management knowledge (SMK) in ITU-T Recommendation M.3010. SMK includes information on the protocol knowledge, management functions, managed object classes and their instances, and authorization capabilities. We have developed a CORBA-based TMN SMK system in order to provide a dynamic and efficient distributed processing environment for the exchange of management information between managers and agents. In this paper, we discuss the design issues and present the design of a CORBA-based SMK system including the access protocol for obtaining the SMK information from MIB and for SMK context negotiations. Also, our effort on the prototype implementation of an SMK system using ORBeline and OSIMIS is presented. The preliminary performance results of our prototype implementation show that ORB-based SMK information access outperforms CMIS-based SMK information access, and that our approach is an efficient way of exchanging SMK information. (18 Refs.)
Classification: B6210C (Network management); B6150M (Protocols); C7410F (Communications computing)
Thesaurus: Access protocols; Distributed processing; Object-oriented methods; Software agents; Telecommunication computing; Telecommunication network management
Free Terms: TMN SMK system; CORBA ORB; Telecommunications management network; Interworking; Shared management knowledge; ITU-T Recommendation M.3010; Protocol knowledge; Management functions; Managed object classes; Authorization capabilities; Distributed processing environment; Access protocol; MIB; SMK context negotiations; ORBeline; OSIMIS
 

INSPEC 5960603 B9808-6210C-011 C9808-7410F-025
Doc Type: Journal Paper
Title: OMSOFT: a change management paradigm
Authors: Suryanarayana, M.M.
Journal: Journal of Network and Systems Management
Vol: 6 Iss: 1 p. 1-9
Publisher: Plenum
Date: March 1998
Country of Publication: USA
ISSN: 1064-7570 CODEN: JNSMEG
CCC: 1064-7570/98/0300-0001$15.00/0
Language: English
Treatment: Practical
Abstract: Interfaces between software modules, processes and programs remain a serious problem for the software industry. The Internet makes it even more important to solve these problems and mobile computing makes robust design of interfaces critical. This description of research on improving CORBA interfaces through OMSOFT led the author to one reasonable solution to the problem. It uses the classic divide and conquer approach to separate interface concerns from application ones. It promises to let developers avoid the problems of undesired interactions between software artifacts in a well-structured way. Network and systems management applications need such approaches as so much of their work is interfacing. (4 Refs.)
Classification: B6210C (Network management); B6210L (Computer communications); C7410F (Communications computing); C5620W (Other computer networks); C6150N (Distributed systems software); C5610N (Network interfaces); C6115 (Programming support)
Thesaurus: Computer network management; Divide and conquer methods; Internet; Management of change; Network interfaces; Object-oriented methods; Programming environments; Telecommunication computing
Free Terms: OMSOFT; Change management; Software industry; Internet; Mobile computing; Robust design; CORBA interfaces; Divide and conquer approach; Network management applications; Systems management applications
 

INSPEC 5873765 B9805-6210C-013 C9805-7410F-036
Doc Type: Journal Paper
Title: CORBA for network and service management in the TINA framework
Authors: Pavon, J.; Tomas, J.; Bardout, Y.; Hauw, L.-H.
Affiliation: Alcatel Corp. Res. Center, Spain
Journal: IEEE Communications Magazine
Vol: 36 Iss: 3 p. 72-9
Publisher: IEEE
Date: March 1998
Country of Publication: USA
ISSN: 0163-6804 CODEN: ICOMD9
CCC: 0163-6804/98/$10.00
Language: English
Treatment: Application; Practical
Abstract: The Common Object Request Broker Architecture (CORBA) specification defines interfaces and services to support interoperability and distribution transparencies for building distributed applications. The Telecommunications Information Networking Architecture (TINA) defines a framework for development of service and network management applications which relies on the use of a distributed processing platform such as CORBA. This approach is presented in the article, which discusses also the interoperation with the current TMN infrastructure. (12 Refs.)
Classification: B6210C (Network management); C7410F (Communications computing); C6110J (Object-oriented programming); C6150N (Distributed systems software); C6110F (Formal methods)
Thesaurus: Distributed processing; Formal specification; Object-oriented methods; Open systems; Telecommunication computing; Telecommunication network management
Free Terms: TINA; Service management; Network management; Common Object Request Broker Architecture; CORBA specification; Interfaces; Interoperability; Distribution transparencies; Distributed applications; Telecommunications Information Networking Architecture; Distributed processing platform; Software architecture; TMN infrastructure
 

INSPEC 5797469 B9802-6210C-010 C9802-7410F-051
Doc Type: Journal Paper
Title: Broadband service creation and operations
Authors: Ying-Dar Lin; Yuh-Tay Lin; Po-Ning Chen; Choy, M.M.
Affiliation: Nat. Chiao Tung Univ., Hsinchu, Taiwan
Journal: IEEE Communications Magazine
Vol: 35 Iss: 12 p. 116-24
Publisher: IEEE
Date: Dec. 1997
Country of Publication: USA
ISSN: 0163-6804 CODEN: ICOMD9
CCC: 0163-6804/97/$10.00
Language: English
Treatment: Application; Practical
Abstract: Three challenges for deploying broadband services are the time-consuming process of service creation, the interoperability over heterogeneous platforms, and the gap between the needs of service management and the functionalities of network management. We describe a methodology to attack the first two challenges, namely, to simplify the process of service creation and provide a platform-independent framework for service operations. A set of broadband service-independent building blocks (SIBs) are designed and used to create and customize SIB graphs for broadband services. During service running time, the service agent interprets a SIB graph and executes SIB procedures which are all downloaded from the service provider. Web, Java, and CORBA are the technological elements of this methodology. Two examples, video conferencing and video on demand, are given to demonstrate the feasibility of this approach. (7 Refs.)
Classification: B6210C (Network management); B6210P (Teleconferencing); C7410F (Communications computing); C7104 (Office automation); C6170K (Knowledge engineering techniques)
Thesaurus: Broadband networks; Interactive video; Open systems; Software agents; Telecommunication computing; Telecommunication network management; Telecommunication services; Teleconferencing
Free Terms: Broadband service creation; Broadband service operation; Interoperability; Heterogeneous platforms; Service management; Network management; Broadband service-independent building blocks; Graphs; Service running time; Service agent; Service provider; Web; Java; CORBA; Video conferencing; Video on demand; Multimedia applications; Intelligent networks
 

INSPEC 5775441 B9801-6210R-042 C9801-7410F-100
Doc Type: Journal Paper
Title: Managing QoS in multimedia services
Authors: Fry, M.; Witana, V.; Ray, P.; Seneviratne, A.
Affiliation: School of Comput. Sci., Broadway, NSW, Australia
Journal: Journal of Network and Systems Management
Vol: 5 Iss: 3 p. 283-300
Publisher: Plenum
Date: Sept. 1997
Country of Publication: USA
ISSN: 1064-7570 CODEN: JNSMEG
CCC: 1064-7570/97/0900-0283$12.50/0
Language: English
Treatment: Practical
Abstract: We present a case study of multimedia service delivery in the World-Wide Web environment. Our system is founded on the notion of end-to-end quality-of-service (QoS) management. We outline our view of an integrated management frame and explain how our QoS management architecture fits into this framework. We then describe our object-oriented multimedia delivery system based on CORBA and Java. We discuss some issues of stream delivery and management with reference to our own experiences. (25 Refs.)
Classification: B6210R (Multimedia communications); B6210C (Network management); B6210L (Computer communications); C7410F (Communications computing); C5620W (Other computer networks); C6110J (Object-oriented programming)
Thesaurus: Internet; Multimedia communication; Object-oriented programming; Telecommunication computing; Telecommunication network management; Telecommunication services
Free Terms: Multimedia service delivery; World-Wide Web; Quality-of-service management; QoS management; Object-oriented multimedia delivery system; CORBA; Java; Stream delivery
 

INSPEC 5763721 B9801-6210L-039 C9801-7210-011
Doc Type: Journal Paper
Title: High security Web servers and gateways
Authors: Edwards, N.; Rees, O.
Affiliation: Hewlett-Packard Labs., Bristol, UK
Journal: Computer Networks and ISDN Systems
Vol: 29 Iss: 8-13 p. 927-38
Publisher: Elsevier
Date: Sept. 1997
Country of Publication: Netherlands
ISSN: 0169-7552 CODEN: CNISE9
CCC: 0169-7552/97/$17.00
Language: English
Conf. Title: Sixth International World Wide Web Conference
Treatment: Practical
Abstract: The paper describes a high security, high performance system for making legacy systems accessible to the Web. It combines distributed object technology with a trusted operating system that implements multi level security. The aim is to satisfy the growing demand for dynamic content generation, while providing a high level of protection against unauthorized access to the service. HP CORBAweb is a software infrastructure that allows access to CORBA applications from the Web. HP VirtualVault is a secure environment for Web applications. The paper gives overviews of both VirtualVault and CORBAweb, and describes the object gateway that merges the integration features of CORBAweb with the security of VirtualVault. The paper describes the authorization model that determines the granularity at which access is granted. It then goes on to explain how the system can be extended to allow remote clients, such as Java applets, to invoke the CORBA based services directly, using the Internet Inter-ORE Protocol (IIOP). The object gateway is designed to be used to provide controlled access through a firewall protecting the servers. Some of the issues associated with firewalls around the clients are discussed. (11 Refs.)
Classification: B6210L (Computer communications); B6210C (Network management); C7210 (Information services and centres); C5620W (Other computer networks); C6150N (Distributed systems software); C6130S (Data security); C7250N (Front end systems for online searching); C0310D (Computer installation management); C6110J (Object-oriented programming)
Thesaurus: Authorisation; Computer network management; Internet; Network operating systems; Object-oriented methods; Online front-ends
Free Terms: High security Web servers; High performance system; Legacy systems; Distributed object technology; Trusted operating system; Multi level security; Dynamic content generation; Unauthorized access; HP CORBAweb; Software infrastructure; HP VirtualVault; Secure environment; Web applications; Object gateway; Authorization model; Remote clients; Java applets; CORBA based services; Internet Inter-ORE Protocol; Controlled access; Firewall
 

INSPEC 5749959 B9712-6210C-036 C9712-7410F-062
Doc Type: Journal Paper
Title: Platon: the distributed NMS platform-with CORBA/TMN integration
Authors: Tanaka, M.; Arima, K.; Hayashi, H.; Fukui, S.
Affiliation: Transmission Eng. Div., NEC Corp., Japan
Journal: NEC Research and Development
Vol: 38 Iss: 3 p. 339-46
Publisher: NEC Creative
Date: July 1997
Country of Publication: Japan
ISSN: 0547-051X CODEN: NECRAU
Language: English
Treatment: Practical
Abstract: As the network area of network management systems (NMS) for transmission systems to be managed has become wider and transmission equipment has become more functional and reliable, NMS that can be distributed over a wide area and enables nonstop operation is required. In this paper, a distributed NMS architecture that uses a highly reliable server (for distribution to a wide area) with a dual configuration is proposed instead of the conventional manager-agent configuration. This paper first introduces a platform, Platon, that supports the construction of the NMS according to our architecture. This platform employs the common object request broker architecture (CORBA) technique to distribute the NMS to a wide area by solving issues that are generated when the CORBA is introduced to a TMN (telecommunications management network). It also enables duplication of CORBA objects. The paper also gives an example of an NMS constructed on Platon that reuses the agent part of the conventional NMS with only small modifications. (12 Refs.)
Classification: B6210C (Network management); B6210L (Computer communications); C7410F (Communications computing); C6150N (Distributed systems software); C6180G (Graphical user interfaces)
Thesaurus: Client-server systems; Graphical user interfaces; Telecommunication network management
Free Terms: Platon; Distributed network management systems; Transmission systems; CORBA/TMN integration; Common object request broker architecture; Telecommunications management network
 

INSPEC 5728648 B9712-6210C-019 C9712-7410F-019
Doc Type: Journal Paper
Title: Performance management of public ATM networks-a scaleable and flexible approach
Authors: Azmoodeh, M.; Davison, R.
Affiliation: British Telecom Res. Labs., Ipswich, UK
Journal: Proceedings of the IEEE
Vol: 85 Iss: 10 p. 1639-45
Publisher: IEEE
Date: Oct. 1997
Country of Publication: USA
ISSN: 0018-9219 CODEN: IEEPAD
CCC: 0018-9219/97/$10.00
Language: English
Treatment: Application; Practical
Abstract: Asynchronous transfer mode technology promises a flexible, multiservice network that will support the broadband future. It will need to be robust and efficient in delivering quality of service, which will not be achieved by network protocols alone. Performance-management systems will be needed. If future networks are to be flexible-allowing new services to be added easily-then their management systems will need to be equally flexible. Approaches derived from the developing technologies of distributed object-oriented computing (common object request broker architecture-CORBA) and distributed artificial intelligence (agents) could allow management systems to be implemented as sets of small-grain, cooperating distributed objects. Such systems should be more flexible, more robust, and easier to modify. This paper presents a framework being developed for understanding performance-management functions and an approach to their implementation based on agent technology and the use of CORBA platforms. (16 Refs.)
Classification: B6210C (Network management); B6150C (Communication switching); C7410F (Communications computing); C6110J (Object-oriented programming); C6170K (Knowledge engineering techniques); C6150N (Distributed systems software)
Thesaurus: Asynchronous transfer mode; Broadband networks; Distributed processing; Knowledge based systems; Object-oriented methods; Software agents; Telecommunication computing; Telecommunication network management
Free Terms: Distributed object-oriented computing; Public ATM networks; Asynchronous transfer mode; ATM technology; Multiservice network; Broadband networks; Quality of service; Network protocols; Performance management systems; Common object request broker architecture; Distributed artificial intelligence; Cooperating distributed objects; Agent technology; CORBA platforms
 

INSPEC 5727086 B9712-6210C-009 C9712-7410F-009
Doc Type: Journal Paper
Title: Evolution of TMN network object models for broadband management
Authors: Manley, A.; Thomas, C.
Journal: IEEE Communications Magazine
Vol: 35 Iss: 10 p. 60-5
Publisher: IEEE
Date: Oct. 1997
Country of Publication: USA
ISSN: 0163-6804 CODEN: ICOMD9
CCC: 0163-6804/97/$10.00
Language: English
Treatment: Application; Practical
Abstract: Telecommunications management network (TMN)-based object models need to satisfy the three objectives of interoperability, integration, and flexibility in order to support rapid provision of future broadband services. While current models are focused on interoperability, it is necessary to consider new techniques to deliver the integration and flexibility capabilities required for these services. The Open Distributed Processing Reference Model (RM-ODP), coupled with CORBA technology, has been proposed as a distributed environment to provide the integration and flexibility capabilities lacking in existing protocols. Existing protocols will continue to be widely used for broadband management interfaces as the distributed environment evolves. The challenge is to maximize the benefits of the distributed environment without compromising the benefits already delivered by the existing protocols. A multiplicity of models has been developed to differing requirements and using differing methodologies. Although there is much commonality between these models, a final stage of convergence is needed to produce a unified network model. There are outstanding issues for definition of management services, resource models, and at the computational level, which need to be resolved for successful evolution to distributed systems. However, a partnership between formal standards bodies and other organizations and consortia which exploits their complementary strengths will ensure that distributed network management of the TMN will become a reality. (11 Refs.)
Classification: B6210C (Network management); B6150M (Protocols); C7410F (Communications computing); C6110J (Object-oriented programming); C6150N (Distributed systems software); C5640 (Protocols)
Thesaurus: Broadband networks; Distributed processing; Network interfaces; Object-oriented methods; Open systems; Protocols; Telecommunication computing; Telecommunication network management; Telecommunication standards
Free Terms: TMN network object models; Broadband management; Telecommunications management network; Interoperability; Broadband services; Integration; Flexibility; Open Distributed Processing Reference Model; RM-ODP; CORBA technology; Distributed environment; Broadband management interfaces; Unified network model; Protocols; Management services; Resource models; Distributed systems; Formal standards bodies; Distributed network management
 

INSPEC 5724953 B9712-6210L-001 C9712-6150N-001
Doc Type: Journal Paper
Title: Experiences on integration of network management and a distributed computing platform
Authors: Rahkila, S.; Stenberg, S.
Affiliation: Nokia Mobile Phones Pty Ltd., Bondi Junction, NSW, Australia
Journal: Distributed Systems Engineering
Vol: 4 Iss: 3 p. 130-8
Publisher: BCS; IEE; IOP
Date: Sept. 1997
Country of Publication: UK
ISSN: 0967-1846 CODEN: DSENEK
CCC: 0967-1846/97/030130+09$19.50
Language: English
Treatment: Practical
Abstract: The integration of the two recognized network management protocol standards, common management information protocol, and simple network management protocol, and Common Object Request Broker Architecture (CORBA) technology, allows management applications to take advantage of distributed object computing as well as the standardized network management protocols. The paper describes the distributed computing platform (DCP) prototype developed at the Nokia Research Center. The DCP prototype is a framework, including tools, compilers and gateways, built to support both Internet and open systems interconnection management through a CORBA infrastructure. (49 Refs.)
Classification: B6210L (Computer communications); B6150M (Protocols); B6210C (Network management); C6150N (Distributed systems software); C5640 (Protocols); C6110F (Formal methods); C6110J (Object-oriented programming); C6150C (Compilers, interpreters and other processors); C5620W (Other computer networks)
Thesaurus: Computer network management; Internet; Internetworking; Object-oriented methods; Object-oriented programming; Open systems; Program compilers; Protocols; Telecommunication standards
Free Terms: Network management protocol standards integration; Distributed computing platform; Simple network management protocol; Common Object Request Broker Architecture technology; Distributed object computing; Standardized network management protocols; Tools; Compilers; Gateways; Internet interconnection management; Open systems interconnection management; CORBA infrastructure
 

INSPEC 5713338 B9711-6210D-014 C9711-7410F-044
Doc Type: Journal Paper
Title: Programming telecommunication networks
Authors: Lazar, A.A.
Affiliation: Columbia Univ., New York, NY, USA
Journal: IEEE Network
Vol: 11 Iss: 5 p. 8-18
Publisher: IEEE
Date: Sept.-Oct. 1997
Country of Publication: USA
ISSN: 0890-8044 CODEN: IENEET
CCC: 0890-8044/97/$10.00
Language: English
Treatment: Application; New development; Practical
Abstract: The move toward market deregulation and open competition has sparked a wave of serious introspection in the telecommunications service industry. Telecom providers and operators are now required to open up their primary revenue channels to competing industries. The competition for product differentiation increasingly depends on the level of sophistication, degree of flexibility, and speed of deployment of services that a future provider can offer. These factors in turn depend heavily on the flexibility of the software architecture in place in a provider's operational infrastructure. Within this context, we examine the service architecture of two major global communication networks-the telephone network and the Internet and explore their weaknesses and strengths. We discuss the realization of an open programmable networking environment based on a new service architecture for advanced telecommunication services that overcomes the limitations of the existing networks. Our approach to network programmability stems from two angles-one conceptual, the other implementational. In the first, we attempt to develop a service model that is open and reflects the economic market structure of the future telecommunications service industry. Furthermore, we introduce an extended reference model for realizing the service marketplace and present it as a vehicle for creating multimedia services with QoS guarantees. In the second, we investigate the feasibility of engineering the reference model from an implementation standpoint. We describe a realization of the open programmable networking environment as a broadband kernel. Called xbind, the broadband kernel incorporates IP and CORBA technologies for signaling, management, and service creation, and ATM for transport. We also address some of the important QoS, performance, scalability, and implementation issues. (44 Refs.)
Classification: B6210D (Telephony); B6210L (Computer communications); B6210R (Multimedia communications); B6150M (Protocols); B6210C (Network management); C7410F (Communications computing); C5620W (Other computer networks); C5640 (Protocols); C6110B (Software engineering techniques)
Thesaurus: Asynchronous transfer mode; Broadband networks; Internet; Multimedia communication; Open systems; Software engineering; Telecommunication computing; Telecommunication network management; Telecommunication services; Telecommunication signalling; Telephone networks; Transport protocols
Free Terms: Telecommunication networks programming; Market deregulation; Open competition; Telecommunications service industry; Telecom providers; Telecom operators; Software architecture flexibility; Service architecture; Global communication networks; Telephone network; Internet; Open programmable networking environment; Telecommunication services; Network programmability; Service model; Economic market structure; Extended reference model; Multimedia services; QoS guarantees; Xbind broadband kernel; CORBA; Signaling; Service creation; ATM; Performance; Scalability
 

INSPEC 5700644 B9711-6420-005 C9711-7410F-011
Doc Type: Journal Paper
Title: On-line broadcast archives for interactive video
Authors: Srivastava, H.O.; Jain, R.C.
Affiliation: All India Radio, New Delhi, India
Journal: IEEE Transactions on Broadcasting
Vol: 43 Iss: 3 p. 288-308
Publisher: IEEE
Date: Sept. 1997
Country of Publication: USA
ISSN: 0018-9316 CODEN: IETBAC
CCC: 0018-9316/97/$10.00
Language: English
Treatment: Application; Practical
Copyright 1997, IEE
Abstract: Delivery of user specified interactive multimedia digital services is drawing worldwide attention. With the availability of a greater number of channels as a result of video compression and the receding geographical barriers, content providers are hard pressed to meet the programme requirements. Broadcast archives are valuable multimedia resource centres, stocking audio and video material of interest to a vast population across the globe. There is a great potential for using these archives for on-line interactive access of these material. The paper describes the system architecture and implementation issues of an on-line broadcast archives management system (OLBAMS) which entails various functions of storage and dissemination, taking advantage of emerging digital technology, viz. video servers, OODBMS, CORBA, MPI video, use of Java applets for set-tops, webTV, or computers. (0 Refs.)
Classification: B6420 (Radio and television broadcasting); B6430H (Video recording); B6120B (Codes); B6140C (Optical information, image and video signal processing); B6210R (Multimedia communications); B6210C (Network management); C7410F (Communications computing); C6110J (Object-oriented programming); C7250 (Information storage and retrieval); C6160J (Object-oriented databases); C6130M (Multimedia)
Thesaurus: Data compression; Digital television; Information retrieval systems; Interactive video; Multimedia communication; Multimedia computing; Object-oriented databases; Telecommunication computing; Telecommunication network management; Television broadcasting; Video coding
Free Terms: Online broadcast archives; Interactive video; Interactive multimedia digital services; Video compression; Content providers; Video material; Audio material; Online interactive access; Online broadcast archives management system; Storage; Information dissemination; Digital technology; Video servers; OODBMS; CORBA; MPI video; Java applets; WebTV; Object-oriented database
 

INSPEC 5656618 B9709-6210C-020 C9709-7410F-038
Doc Type: Journal Paper
Title: Customer network management system for managing ATM virtual private networks
Authors: Park, J.-T.; Lee, J.-H.; Hong, J.W.-K.
Affiliation: Sch. of Electron. & Electr. Eng., Kyungpook Nat. Univ., Taegu, South Korea
Journal: IEICE Transactions on Communications
Vol: E80-B Iss: 6 p. 818-26
Publisher: Inst. Electron. Inf. & Commun. Eng
Date: June 1997
Country of Publication: Japan
ISSN: 0916-8516 CODEN: ITCMEZ
Language: English
Treatment: Application; Practical
Copyright 1997, IEE
Abstract: As enterprises use ATM networks for their private networks and as these private networks use public ATM networks for wide area communication, the need for the customers to be able to manage both private and public networks is increasing. Currently, some standardization work is being done towards providing this capability to customers. In this paper, we propose a new customer network management (CNM) system architecture for the management of both private and public ATM networks in a uniform way. The particular features of the proposed architecture lies in the efficient support of the complex hierarchical TMN manager-agent relationships at M3 and M4 interfaces, and the support of SNMP and CMIP integration. The TMN hierarchical many-to-many manager-agent relationships are realized by the utilization of a CORBA-based shared management knowledge (SMK) system. We have implemented a prototype ATM CNM system, and measured the performance for the demonstration of the suitability of the proposed architecture. (14 Refs.)
Classification: B6210C (Network management); B6150M (Protocols); C7410F (Communications computing)
Thesaurus: Asynchronous transfer mode; Protocols; Standardisation; Telecommunication computing; Telecommunication network management; Telecommunication standards
Free Terms: Customer network management system; ATM virtual private networks; Public ATM networks; Wide area communication; Standardization work; Customer network management; Hierarchical TMN manager-agent relationships; M3 interfaces; M4 interfaces; SNMP/CMIP integration; Many-to-many manager-agent relationships; CORBA-based shared management knowledge system; ATM CNM system
 

INSPEC 5604192 B9707-6210L-135 C9707-5620W-053
Doc Type: Journal Paper
Title: Java- and CORBA-based network management
Authors: Leppinen, M.; Pulkkinen, P.; Rautiainen, A.
Affiliation: Nokia Res. Center, Espoo, Finland
Journal: Computer
Vol: 30 Iss: 6 p. 83-7
Publisher: IEEE Comput. Soc
Date: June 1997
Country of Publication: USA
ISSN: 0018-9162 CODEN: CPTRB4
CCC: 0018-9162/97/$10.00
Language: English
Treatment: Practical
Copyright 1997, IEE
Abstract: Systems to manage distributed heterogeneous networks and services must often use off-the-shelf components and leverage legacy applications. Much of the telecommunications industry uses a network architecture based on CMIP (Common Management Information Protocol) to manage networks and services, while much of the Internet uses the SNMP (Simple Network Management Protocol). To provide distributed network management, the telecommunications industry must accommodate both, Nokia developed the Distributed Computing Platform prototype to support the creation, management, and invocation of distributed telecommunications services. Using CORBA as a base, DCP handles network management by adding managed-object models and protocols. It provides mechanisms that allow communication between CMIP-based objects and a gateway for SNMP-based systems. The prototype also allows users to access network information via Web browsers, CGI gateways, and Java or HTTP daemons. The Nokia engineers also discuss the lessons they learned about Java and CORBA integration. (9 Refs.)
Classification: B6210L (Computer communications); B6150M (Protocols); B6210C (Network management); C5620W (Other computer networks); C5640 (Protocols); C6110J (Object-oriented programming); C6140D (High level languages); C5610N (Network interfaces); C6150N (Distributed systems software)
Thesaurus: Computer network management; Internet; Network interfaces; Object-oriented languages; Object-oriented programming; Protocols
Free Terms: Java-based network management; CORBA-based network management; Distributed heterogeneous network management; Distributed heterogeneous service management; Legacy applications; Off-the-shelf components; Telecommunications industry; Network architecture; CMIP; Common Management Information Protocol; Internet; SNMP; Simple Network Management Protocol; Nokia; Distributed Computing Platform; Distributed telecommunications services; Managed-object models; Network information access; Web browsers; CGI gateways; Java daemons; HTTP daemons
 

INSPEC 5570380 B9706-6210C-006 C9706-6150N-024
Doc Type: Journal Paper
Title: Experiences developing CORBA-based services
Authors: Greenberg, M.J.; Rao, S.; Behanna, C.; Phillips, R.
Journal: NEC Research and Development
Vol: 38 Iss: 1 p. 105-25
Publisher: NEC Creative
Date: Jan. 1997
Country of Publication: Japan
ISSN: 0547-051X CODEN: NECRAU
Language: English
Treatment: Practical
Copyright 1997, IEE
Abstract: NEC Systems Laboratory's Open Systems Technology Center (OSTC) has been prototyping and developing CORBA (Common Object Request Broker Architecture)-based object services for the past three years. Our emphasis has been on trying to design service architectures which can be implemented using any CORBA-compliant Object Request Broker (ORB), and to develop implementations of those services which are integrated with various popular commercial ORBs. This paper will describe OSTC's efforts to design a complete framework architecture composed of a CORBA-compliant ORB and all common object services required by distributed system management, network management, and telecommunications applications. In addition to describing the proposed architecture, the paper will discuss OSTC's experiences in attempting to integrate some of the services with various CORBA implementations. Particular attention will be paid to some of the problems we have encountered, most having to do with the lack of portability of object service code between various CORBA implementations. In addition to identifying the problem, some proposed solutions will be described, including the specification of a client-side portability layer we have developed to improve the portability of client code between various CORBA environments. (6 Refs.)
Classification: B6210C (Network management); B6210L (Computer communications); C6150N (Distributed systems software); C6150J (Operating systems); C7410F (Communications computing); C5620 (Computer networks and techniques)
Thesaurus: Client-server systems; Concurrency control; Network operating systems; Object-oriented methods; Open systems; Telecommunication computing; Telecommunication network management
Free Terms: CORBA-based services; Common object request broker architecture; Service architectures; Complete framework architecture; Distributed system management; Network management; Telecommunications applications; Lack of portability; Object service code; Client-side portability layer; Management services; Object-oriented software; Convenience layer; Exception handling; Interoperability
 

INSPEC 5523039 B9704-6210C-096 C9704-7410F-142
Doc Type: Journal Paper
Title: A high-performance end system architecture for real-time CORBA
Authors: Schmidt, D.C.; Gokhale, A.S.; Harrison, T.H.; Parulkar, G.
Affiliation: Dept. of Comput. Sci., Washington Univ., St. Louis, MO, USA
Journal: IEEE Communications Magazine
Vol: 35 Iss: 2 p. 72-7
Publisher: IEEE
Date: Feb. 1997
Country of Publication: USA
ISSN: 0163-6804 CODEN: ICOMD9
CCC: 0163-6804/97/$10.00
Language: English
Treatment: Application; Practical
Copyright 1997, IEE
Abstract: Many application domains (e.g., avionics, telecommunications, and multimedia) require real-time guarantees from the underlying networks, operating systems, and middleware components to achieve their quality of service (QoS) requirements. In addition to providing end-to-end QoS guarantees, applications in these domains must be flexible and reusable. Requirements for flexibility and reusability motivate the use of object-oriented middleware like the Common Object Request Broker Architecture (CORBA). However, the performance of current CORBA implementations is not yet suited for hard real-time systems (e.g., avionics) and constrained latency systems (e.g., teleconferencing). This article describes the architectural features and optimizations required to develop real-time ORB end systems that can deliver end-to-end QoS guarantees to applications. While some operating systems, networks, and protocols now support real-time scheduling, they do not provide integrated solutions. The main thrust of this article is that advances in real-time distributed object computing can be achieved only by systematically pinpointing performance bottlenecks; optimizing the performance of networks, ORB end systems, common services, and applications; and simultaneously integrating techniques and tools that simplify application development. (11 Refs.)
Classification: B6210C (Network management); C7410F (Communications computing); C6110J (Object-oriented programming); C6150N (Distributed systems software)
Thesaurus: Maintenance engineering; Network operating systems; Object-oriented methods; Real-time systems; Telecommunication computing; Telecommunication network management
Free Terms: High-performance end system architecture; Real-time CORBA; Avionics; Telecommunications; Multimedia; Operating systems; Middleware components; Quality of service; QoS guarantees; Object-oriented middleware; Common Object Request Broker Architecture; Real-time systems; Constrained latency systems; Teleconferencing; Protocols; Real-time scheduling; Real-time distributed object computing; Performance bottlenecks; Network performance
 

INSPEC 5523036 B9704-6210C-094 C9704-5620W-017
Doc Type: Journal Paper
Title: CORBA: integrating diverse applications within distributed heterogeneous environments
Authors: Vinoski, S.
Journal: IEEE Communications Magazine
Vol: 35 Iss: 2 p. 46-55
Publisher: IEEE
Date: Feb. 1997
Country of Publication: USA
ISSN: 0163-6804 CODEN: ICOMD9
CCC: 0163-6804/97/$10.00
Language: English
Treatment: Application; Practical
Copyright 1997, IEE
Abstract: Large computer networks such as corporate intranets and the Internet are inherently heterogeneous due to such factors as increasingly rapid technological change, engineering trade-offs, accumulation of legacy systems over time, and varying system costs. Unfortunately, such heterogeneity makes the development and maintenance of applications that make the best use of such networks difficult. The Common Object Request Broker Architecture specification created by the Object Management Group provides a stable model for distributed object-oriented systems that helps developers cope with heterogeneity and inevitable change. Applications written to the CORBA standard are abstracted away from underlying networking protocols and transports, instead relying on object request brokers to provide a fast and flexible communication and object activation substrated. The abstractions provided by CORBA ORBs are currently serving as the basis for applications in a wide variety of problem domains, including telecommunications, finance, medicine, and manufacturing, running on platforms ranging from mainframes down to test and measurement equipment. This article first provides an overview of the Object Management Architecture, then describes in detail the CORBA component of that architecture, and concludes with a description of the OMG organization along with some of its current and future work. (21 Refs.)
Classification: B6210C (Network management); B6210L (Computer communications); B6150M (Protocols); C5620W (Other computer networks); C6150N (Distributed systems software); C6110J (Object-oriented programming); C7410F (Communications computing); C5640 (Protocols)
Thesaurus: Business communication; Computer network management; Distributed processing; Internet; Maintenance engineering; Object-oriented methods; Protocols; Telecommunication computing; Telecommunication standards
Free Terms: Computer networks; Corporate intranets; Internet; Distributed heterogeneous environments; Legacy systems; System costs; Maintenance; Common Object Request Broker Architecture specification; Object Management Group; Distributed object-oriented systems; CORBA standard; Networking protocols; Object request brokers; Object activation; Telecommunications; Finance; Medicine; Manufacturing; Mainframes; Measurement equipment; Test equipment; Object Management Architecture
 

INSPEC 5511902 C9704-6150N-021
Doc Type: Journal Paper
Title: Decentralized event handling
Authors: Stewart, R.L.; Storey, J.; Huang, D.
Journal: C++ Report
Vol: 9 Iss: 2 p. 12-19
Publisher: SIGS Publications
Date: Feb. 1997
Country of Publication: USA
ISSN: 1040-6042 CODEN: CRPTE7
Language: English
Treatment: Practical
Copyright 1997, IEE
Abstract: Event processing in software applications has a long history and is ubiquitous in today's software systems. Most of these systems have some central event handling service and dispatcher. Usually, a simple callback mechanism is employed that allows specific procedures to be invoked upon detection of some event. Distributed object-oriented applications, on the other hand, require decentralized event handling capability. These systems must scale to millions of objects and many thousands of events per second. TCSI's TMN Framework is a CORBA-based TMN (Telecommunications Management Network) compliant, domain-specific framework for building large telecommunications system management applications. This framework is designed so that new event types can be defined at run-time and dynamically loaded into the running applications. In this framework, the mapping between events and callbacks may be changed at run-time, allowing complete programmerless, dynamic control flow configuration. So, when new equipment is added to a telephony network, new events can be defined accordingly and callbacks registered for the new events. The definition of event is fairly consistent in most software applications. However, event handling capability varies widely from one system to the next, even within the same domain. We provide a definition of event, provide examples of event types, and describe the event handling capabilities we have designed into the TMN Framework. (14 Refs.)
Classification: C6150N (Distributed systems software); C6110J (Object-oriented programming)
Thesaurus: Distributed processing; Inheritance; Object-oriented methods; Telecommunication network management; Telephony
Free Terms: Decentralized event handling; Callback mechanism; Distributed object-oriented applications; TCSI; TMN Framework; CORBA-based TMN; Telecommunications management network; Run-time; Dynamic control flow configuration; Telephony network; Inheritance
 

INSPEC 5467710 C9702-5620-018
Doc Type: Journal Paper
Title: Design and implementation of CORBA-based TMN shared management knowledge system
Authors: Su-Ho Ha; Kyoung-Chan Sohn; Jong-Tae Park; J. Won-Ki Hong; Joong-Gu Song
Journal: Journal of KISS[A] [Computer Systems and Theory]
Vol: 23 Iss: 10 p. 1078-87
Publisher: Korea Inf. Sci. Soc
Date: Oct. 1996
Country of Publication: South Korea
ISSN: 1226-2315 CODEN: CKNOF2
Language: English
Treatment: Practical
Copyright 1997, IEE
Abstract: In telecommunication management network (TMN), the interworking of manager and agent requires the sharing of management information defined as shared management knowledge (SMK) in ITU-T Recommendation M.3010, SMK includes information on the protocol knowledge, management functions, managed object classes and their instances, and authorization capabilities. In this paper, we examine in detail the design issues in developing an SMK system for supporting management systems. We present a design of a CORBA-based SMK system including the procedures of obtaining the SMK information from MIB and of SMK context negotiations. Finally our effort on the prototype implementation of an SMK system using ORBeline and OSIMIS is presented. The architecture provides the dynamic and efficient distributed processing environment for the exchange of management information between managers and agents. (11 Refs.)
Classification: C5620 (Computer networks and techniques); C5220P (Parallel architecture); C6150N (Distributed systems software)
Thesaurus: Distributed processing; Management information systems; Telecommunication network management
Free Terms: TMN shared management knowledge system; CORBA-based; Telecommunication management network; SMK system; ORBeline; OSIMIS
 

INSPEC 5400461 B9612-6210C-003 C9612-6150N-005
Doc Type: Journal Paper
Title: The SysMan monitoring service and its management environment
Authors: Debski, A.; Janas, E.
Affiliation: AEG ATM Comput. GmbH, Konstanz, Germany
Journal: Distributed Systems Engineering
Vol: 3 Iss: 2 p. 136-47
Publisher: BCS; IEE; IOP
Date: June 1996
Country of Publication: UK
ISSN: 0967-1846 CODEN: DSENEK
CCC: 0967-1846/96/020136+12$19.50
Language: English
Treatment: Practical
Copyright 1996, IEE
Abstract: Management of modern information systems is becoming more and more complex. There is a growing need for powerful, flexible and affordable management tools to assist system managers in maintaining such systems. It is at the same time evident that effective management should integrate network management, system management and application management in a uniform way. Object oriented OSI management architecture with its four basic modelling concepts (information, organization, communication and functional models) together with widely accepted distribution platforms such as ANSA/CORBA, constitutes a reliable and modern framework for the implementation of a management toolset. This paper focuses on the presentation of concepts and implementation results of an object oriented management toolset developed and implemented within the framework of the ESPRIT project 7026 SysMan. An overview is given of the implemented SysMan management services including the System Management Service, Monitoring Service, Network Management Service, Knowledge Service, Domain and Policy Service, and the User Interface. Special attention is paid to the Monitoring Service which incorporates the architectural key entity responsible for event management. Its architecture and building components, especially filters, are emphasized and presented in detail. (21 Refs.)
Classification: B6210C (Network management); C6150N (Distributed systems software); C5620 (Computer networks and techniques); C0310D (Computer installation management); C6110J (Object-oriented programming)
Thesaurus: Computer network management; Distributed processing; Object-oriented methods
Free Terms: SysMan monitoring service; Management environment; Information systems; Object oriented management toolset; Network Management Service; System Management Service; Monitoring Service; Knowledge Service; Domain and Policy Service; User Interface; Event management