一种基于CORBA的多级网络管理系统的设计与实现

分布计算技术正日益成为通信界网络管理的一个热点技术。以电信网络管理的应用为背景,提出了基于CORBA的多级网络管理体系结构MHMN（multi-hierarchy network management architeutur)。并采用pseudoagent分布式管理和被管对象MO（managed object)分类预取值Cache技术,设计了一个多级网络管理系统MHNMs(MHNM system),该系统可提供多对象快速访问的功能,从而为CORBA应用到实际网络管理提供了性能保证。     

Artificial intelligence applications in the telecommunications industry

Abstract: Artificial intelligence (AI) has been applied to the telecommunications industry for more than a decade. The purpose of this paper is to examine the application of AI in the telecommunications industry sector. Our research finds that AI's first main application in telecommunications is in the network management area. Expert systems and machine learning are the two AI techniques that have been widely used in telecommunications, while machine learning and distributed artificial intelligence are the two AI techniques which are most promising for the future. The research also finds that different AI techniques have their unique applications in the telecommunications industry.     

一个基于CORBA和移动智能体的分布式网箱集成框架

文中分析了当前主流网管系统在体系结构上的缺陷,阐述了分布对象技术（CORBA）与移动智能体技术各自在网管领域的应用方法与优势。结合这些优势,给出了一个基于CORBA和移动智能体的分布式网管集成框架,并进一步通过实验模拟证实了其可行性。     

Visualization and debugging of distributed multiagent systems

Visualizing the behavior of systems with distributed data, control, and process is a notoriously difficult task. Each component in the distributed system has only a local view of the whole setup, and the onus is on the user to integrate, into a coherent whole, the large amounts of limited information they provide. In this article, we describe an architecture and an implemented system for visualizing and controlling distributed multiagent applications. The system comprises a suite of tools, with each tool providing a different perspective of the application being visualized . Each tool interrogates the components of the distributed application, collates the returned information, and presents this information to users in an appropriate manner. This in essence, shifts the burden ofinference from the user to the visualizer. Our visualizer has been evaluated on four distributed multiagent systems: a travel management application, a telecommunications network management application, a business process management demonstrator, and an electronic commerce application. Lastly, we briefly show how the suite of tools can be used together for debugging multiagent applications - a process we refer to as debugging via corroboration.     

FIPA-compliant agents for real-time control of Intelligent Network traffic

Autonomy, adaptability, scalability, and flexible communications are all attributes of agents and multi-agent systems which suggest that they may offer timely solutions for dealing with the growing complexity of the tasks of traffic control and resource management in telecommunications networks. However, if agent-based solutions to network management problems are to be successful then it will be important that heterogeneous agents and agent platforms inter-operate in accordance with internationally accepted standards. Although standards of this nature are being developed, they are not tailored specifically to the needs of the telecommunications domain, with the result that important issues, such as support for the operation of agent systems in real-time constrained environments, do not seem to be adequately addressed. We present two agent-based systems for control of traffic load and resource allocation in Intelligent Networks. One of these strategies is based on the concepts of `Market-based Control', the other on the concepts of `Ant Colony Optimisation'. Using the market-based strategy as an example we show that enhancements to existing FIPA specifications would be required to implement these strategies in order to satisfy their real-time operation constraints. We also suggest a number of potential enhancements to FIPA specifications that would alleviate some of the identified problems.     

基于许可链的SWIFT系统分布式架构

跨境金融通信对于现代金融业务的开展极为重要.环球银行金融电信协会（SWIFT）是跨境金融通信服务的主要提供者.现阶段,报文传输是SWIFT系统的主要业务,确保报文传输安全、准确、高效,是SWIFT系统的重要目标.但现阶段基于中心架构思想的SWIFT系统安全风险突出,传输效率低,成本较高.基于许可链分布式共识机制,提出BCSWIFT系统,对现有的SWIFT系统进行优化.首先,将SWIFT系统的传输网络划分为主网络层和附加网络层;其次,提出了基于双层网络结构的共识算法;第三,介绍了BCSWIFT系统的报文交互和传输机制;第四,出于金融业务数据商业保密考虑,提出了一种面向BCSWIFT系统的隐私保护机制;第五,对BCSWIFT系统的安全性进行了分析.以优化SWIFT系统的报文传输业务为例,阐释了基于许可链的跨境金融通信的基本机理,为确保跨境支付、清算、结算的安全、高效、准确和低成本化运作提供了新的思路,也为区块链技术大规模商业应用提供了重要参照.     

On the Performance and Scalability of Web Services for Monitoring MPLS-based Networks

Web Services is an XML-based technology that has attracted significant attention for building distributed Internet services. Considerable research efforts have been trying to extend it to become a unifying management technology; initial evaluation efforts have demonstrated promising application potential in the domain of network and service management. This paper analyzes the monitoring requirements of a management system used in architectures for providing quality of service, and shows how Web Services can be used effectively to fulfill these requirements. In order to achieve this, a WS-based framework was designed and a query tool was developed to support distributed, optimized retrieval of management information exposed as Web Services. The query tool supports selective and bulk retrieval from MPLS-capable routers. Management information retrieval is demonstrated through three monitoring scenarios, and the measured performance in terms of latency and bandwidth is compared against a conventional approach based on SNMP.     

A Middleware-based Distributed Management Framework for Next-generation Network

As the basis for next-generation application middleware, distributed computing technique is increasingly used in the network management to fulfill the integration of diverse management systems. Furthermore Web technology is widely used in interaction friendly with user. This article puts forward a MNMI (Middleware-based Network Management Integration) framework in the domain of the management of IPv6 test bed-NSFCNET (National Natural Science Foundation of China Network). The framework uses a logically-layers method from user interface to managers and pseudo-agent, which uses distributed management and groups managed objects to retrieve, and thus it has assured the performance of network management by providing multiple object quick access.     

基于Agent的分布式数据库查询优化研究

目前分布式数据库查询优化器基于代价模型,总代价=CPU代价+I/O代价+通信代价,在远程通信网或数据传输率较低的系统中,通信代价应作为首要的优化目标来考虑;提出了一种基于Multi-Agent技术的查询模型(QMAS);同时为了保证系统组内、组间Agent之间的高效通信,采用了树型拓扑结构(TTMAS)的通信模型,系统内各Agent使用通信原语高效通信、协作,且满足Agent间的通信路由最优,从而保证了QMAS的查询效率.     

A mobile agent platform for distributed network and systems management

The mobile agent (MA) technology has been proposed for the management of networks and distributed systems as an answer to the scalability problems of the centralized paradigm. Management tasks may be assigned to an agent, which delegates and executes management logic in a distributed and autonomous fashion. MA-based management has been a subject of intense research in the past few years, reflected on the proliferation of MA platforms (MAPs) expressly oriented to distributed management. However, most of these platforms impose considerable burden on network and system resources and also lack of essential functionality, such as security mechanisms, fault tolerance, strategies for building network-aware MA itineraries and support for user-friendly customization of MA-based management tasks. In this paper, we discuss the design considerations and implementation details of a complete MAP research prototype that sufficiently addresses all the aforementioned issues. Our MAP has been implemented in Java and optimized for network and systems management applications. The paper also presents the evaluation results of our prototype in real and simulated networking environments.     

通信交换工程的组网与改造

随着信息技术的发展,通信交换工程成为现代社会中一个越来越重要的行业,面临着很大的挑战和更高的要求。对通信交换过程进行组网与改造是的现代社会发展的必然。本文从探讨对我国通信交换工程进行组网与改造的必要性入手,介绍我国通信交换工程的基本概况,进而从改造中继与话路传输、建立健全同步数字通信体系等几个方面探讨了我们对通信交换工程如何进行具体的组网与改造。     

Integrated Enterprise Networking Management: Case Study in Intelligent Multimedia Message Handling Systems

The importance of integrated management stems from the vision of merging telecommunications and distributed computing systems management within the same framework, rapid globalization of world enterprises, and the pressing need for networks and services to be more responsive to "end users." This paper proposes an integrated and distributed management platform which is in line with, but not limited to, the integration of DME, OSI, TMN, and ODP principles. Furthermore, it focuses on a specific layer of the platform describing formally (i) the management domain and management policy concepts; (ii) the services which manage and enforce them; (iii) the performance policy enforcement service; and (iv) how to build-up policy hierarchies. In addition, this paper defines an Intelligent Multimedia Message Handling System (IM3HS) and depicts the high applicability of the domain and policy concepts to its management. Finally, an integrated management architecture for the IM3HS, as well as implementation issues of the IM3HS distributed management platform services are presented.     

云计算环境下基于Mashup的一种电信网络能力服务提供模式

随着高速发展的互联网和移动通信在业务层面的逐渐融合,国内运营商所采用的"封闭花园"模式的业务架构已经面临各种挑战,因此需要更多地考虑如何有效引入互联网业务和服务模式,不断提升用户体验。在电信运营商逐步开放其电信能力API的背景下,基于Mashup的业务构建模式,提出了一种云计算环境下的电信网络能力服务提供模式。该模式将Mashup的理念移植到电信能力上,并将电信能力封装成Web Element的形式呈现给用户,进一步提升了电信网络能力服务的抽象层次。这种电信能力应用模式打破了电信能力拘泥于手持终端的传统形式,提出了一种新的适合于Web2.0环境的电信网络能力服务提供模式。在"OMP(Open Mobile Internet Platform)应用运行和开发引擎算法及功能研发"项目中的试用证明了其可行性。     

Ontological Semantics for Distributing Contextual Knowledge in Highly Distributed Autonomic Systems

Much recent research has focused on applying Autonomic Computing principles to achieve constrained self-management in adaptive systems, through self-monitoring and analysis, strategy planning, and self adjustment. However, in a highly distributed system, just monitoring current operation and context is a complex and largely unsolved problem domain. This difficulty is particularly evident in the areas of network management, pervasive computing, and autonomic communications. This paper presents a model for the filtered dissemination of semantically enriched knowledge over a large loosely coupled network of distributed heterogeneous autonomic agents, removing the need to bind explicitly to all of the potential sources of that knowledge. This paper presents an implementation of such a knowledge delivery service, which enables the efficient routing of distributed heterogeneous knowledge to, and only to, nodes that have expressed an interest in that knowledge. This gathered knowledge can then be used as the operational or context information needed to analyze to the system's behavior as part of an autonomic control loop. As a case study this paper focuses on contextual knowledge distribution for autonomic network management. A comparative evaluation of the performance of the knowledge delivery service is also provided. John Keeney holds a BAI degree in Computer Engineering and a PhD in Computer Science from Trinity College Dublin. His primary interests are in controlling autonomic adaptable systems, particularly when those systems are distributed. David Lewis graduated in Electronics Engineering from the University of Southampton and gained his PhD in Computer Science from University College London. His areas of interest include integrated network and service management, distributed system engineering, adaptive and autonomic systems, semantic services and pervasive computing. Declan O’Sullivan was awarded his primary degree, MSc and PhD in Computer Science from Trinity College Dublin. He has a particular interest in the issues of semantic interoperability and heterogeneous information querying within a range of areas, primarily network and service management, autonomic management, and pervasive computing.     

网络管理的多agent范型

网络管理系统是大规模的分布式软件系统 ,伸缩性和灵活性是今天的网络管理技术面临的两大难题 .软件 a-gent为这些难题提供了出色的解决方法 .本文首先指出当前网络管理中存在的问题 ;在此基础上 ,提出基于多 agent的网络管理结构 ;为了证明其技术可行性 ,专门建立了基于 agent的网络流量管理实验系统 .对该系统的评估证明了软件agent非常适合于开发分布式网络管理系统 ,具有实时性高、可扩充性好、自治能力强的特点 ,而且与传统系统相比 ,这种系统的建立、修改和升级更加经济     

An expert system for wide area network component configuration

Abstract: Many organizations today have an interest in communications networks, either as users of public networks or as operators of their own private networks. Thus, the management of communications networks has become an important issue in the communications industry. The network design task is fundamental to the whole notion of network management; however, with the rapid rate of change in network technology and the emergence of highly sophisticated network users, network design has become an increasingly complex problem.
The purpose of this paper is to describe a development effort which incorporates expert systems techniques to treat one aspect of the network design problem—the initial planning and design of a network prior to implementation. The research effort was concerned with developing an expert system for Amdahl Communications Products which could be used by sales engineers in designing wide area networks to meet specified customer requirements. The system treats both the topological design problem and the component configuration problem.     

Use of local area networks within manufacturing systems

Proposals have recently been made within the computer industry to standardize local area computer networking hardware and, although such standards are primarily aimed at the office automation market, they will undoubtedly find many applications in distributed industrial control where a requirement for high speed reliable standardized digital communications also exists. A simple manufacturing cell will be described which demonstrates the advantage of distributed control by using an integrated communications network employing low cost twin axial cable. The individual cell element control systems are supervised by a single computer station providing both control and management information. It will also be shown how such techniques can be applied within industrial manufacturing systems by considering the use of computer networks within a process plant and for the integration of industrial robot systems.     

The coming of ISDN

Integrated Services Digital Network, or ISDN, is the latest catch phrase in the field of telecommunications. Much effort has been put into establishing a standard for this new technology, but still more remains before the dream of a seamless communications network will be realized. This paper discusses the process taking place and the problems that this new technology faces. First, an overview of ISDN technology is given: its development, concepts, and capabilities. Then, we examine the major obstacles facing ISDN implementation, with a comparison of the pros and cons of some features. Finally, The technology is considered from an information manager's point of view: how can a manager prepare for the arrival of a mature technology?