典型运营支撑系统的实现和应用

客户需求、运营商组织结构、软件实现技术不断变化为形成稳定的运营支撑系统（OSS）带来了很大困难，因此寻找相对稳定的因素非常重要。电信管理论坛（TMF）的新代运营系统和软件（NGOSS）对些规律性的因素进行了比较深入的研究，并在NGOSS的核心理念、方法论、知识库中给予体现。结合OSS中的订单管理和服务配置系统的实施，探讨了如何开发符合NGOSS要求的OSS，认为在具体实现时还需要考虑电信产品、服务、资源的特性以及具体的软件实现技术。     

基于配置策略的传统电信系统功能到OSS/J接口实现

OSS/J是NGOSS的Java实现,文章提出了一个基于配置策略的传统电信系统功能到OSS/J标准电信功能接口实现方案.首先分析传统电信系统处理流程和数据模型,通过设置配置文件,将传统电信系统的功能和数据分别映射成OSS/J标准接口和共享数据,从而使传统电信系统映射为OSS/J功能组件,提供统一的OSS/J操作流程.     

NGOSS建设框架

介绍了NGOSS产生的背景,在分析BSS/OSS建设要求,总结NGOSS框架相关核心技术的基础上,从电信企业的角度,阐述了NGOSS建设框架。     

A component-based policy-neutral architecture for kernel-level access control

Protection should fundamentally be flexible for devices roaming in Beyond 3G networks. In this federation of heterogeneous access networks, each sub-network comes with its own security requirements, policies, and protocols. Foundational element of device security, the embedded OS itself, should become adaptable to make it possible to tune its protection mechanisms to the current security context, notably to support multiple authorization policies. We show how flexibility can be applied to the kernel authorization architecture by adopting a component-based OS design, the component serving as single abstraction for reconfiguration and security. We present a policy-neutral access control architecture called CRACKER (Component-based Reconfigurable Access Control for KERnels) for component-based operating systems. CRACKER supports a wide range of authorization policies, and permits policy reconfiguration, in the same or in different security models. Specified in the Fractal component model, and implemented in the Think OS, CRACKER illustrates how flexible kernel authorization can be realized while maintaining acceptable system performance.     

新一代运营支撑系统体系结构及关键技术分析

目前运营支撑系统已经成为各大运营商争相发展的重点,新一代的运营支撑系统日益成为电信企业整体信息战略的重要组成部分,本文着重分析NGOSS各组成部分在整体框架结构中的作用,以及它们之间的逻辑关系,在此基础上分析eTOM模型的最新发展动向;同时结合当前软件技术的发展现状,介绍NGOSS中各项关键技术的发展趋势.     

Policy-based model-driven engineering of pervasive services and the associated OSS

This paper presents our work towards a fully functioning platform for pervasive service engineering in an operational support services (OSS) context for an ICT service provider. The focus of the paper lies in a proof-of-concept for a novel means to develop and execute pervasive services, with simplicity and maintainability as prime drivers. The essence of this approach is the novel integration of the policy-based management (PBM) techniques and the model-driven architecture (MDA) techniques for specifying pervasive services and their behaviour, together with auto-generation of middleware implementation and policy enablement. The presence of policies provides pervasive services with the high flexibility and adaptability needed for dealing with changing environments and resource availabilities, while the introduction of MDA for defining pervasive service information models fundamentally solves the information modelling puzzle of current policy-based approaches. Additionally, MDA’s middleware-neutral feature benefits the smooth evolution of pervasive services as a piece of software artefact in the face of heterogeneous devices and platforms. A preliminary case study has demonstrated the practical feasibility and benefits of this approach. The case study revolves around an ICT service called TEANU — transparent enterprise access for nomadic user. The service provides a means for nomadic users to maintain a secure access to their enterprise network in the presence of multiple access network providers with different service level guarantees.     

基于存储库数据挖掘的开源软件成功度量方法

开源软件已广泛应用于各软件领域,例如操作系统、容器等,但目前尚没有一种能够综合度量开源软件的方法.我们在用户兴趣度量和开发参与度量的基础上,提出了一种能够克服度量维度单一的局限性的度量方法.基于DM模型、软件生存力模型等相关文献研究和开源软件存储库数据挖掘,通过对项目过程数据进行聚类、主成分分析、回归分析和对开发过程的思考,本文提出一种基于存储库数据和统计学算法的开源软件成功度度量模型.并通过与用户兴趣度量结果和开发参与度量结果对比分析,证明本文的度量模型能够基于可自动无扰采集的存储库数据,更全面的衡量开源软件项目的成功.度量模型可应用于企业选择优质开源项目、学术研究、智能项目推荐等领域.     

Applications and design issues for mobile agents in wireless sensor networks

Recently, research interest has increased in the design, development, and deployment of mobile agent systems for high-level inference and surveillance in a wireless sensor network (WSN). Mobile agent systems employ migrating codes to facilitate flexible application re-tasking, local processing, and collaborative signal and information processing. This provides extra flexibility, as well as new capabilities to WSNs in contrast to the conventional WSN operations based on the client-server computing model. In this article we survey the potential applications of mobile agents in WSNs and discuss the key design issues for such applications. We decompose the agent design functionality into four components, that is, architecture, itinerary planning, middleware system design, and agent cooperation. This taxonomy covers low-level to high-level design issues and facilitates the creation of a component-based and efficient mobile agent system for a wide range of applications. With a different realization for each design component, it is expected that flexible trade-offs (e.g., between energy and delay) can be achieved according to specific application requirements.     

PKUAS:一种面向领域的构件运行支撑平台

基于中间件的构件运行支撑平台是实现基于构件的软件复用的关键.现有中间件技术侧重于解决大多数领域开发分布系统均会遇到的共性问题,忽视了单个应用领域内的共性问题.在下一代中间件技术追求的主要特性中,开放性与灵活性能够有效增强中间件对领域特性的支持.本文介绍了一个开放、灵活、面向领域的构件运行支撑平台,重点研究了平台内核、可扩展互操作框架以及元编程机制,并结合电力领域探讨了面向领域的定制与扩展方法.     

Design and implementation of Web Services-based NGOSS technology-specific architecture

To cope with frequent changes and functional additions of operation and support systems (OSSs), a guideline of OSS’s architecture and development methods is needed. TeleManagement Forum has provided Next Generation Operations Systems and Software (NGOSS) technology-neutral architecture (TNA), which describes major concepts and architectural details of the NGOSS architecture in a technologically neutral manner. The TNA can be mapped onto technology-specific architectures (TSAs) using specific technologies such as Extensible Markup Language, Java, and Common Object Request Broker Architecture. Web Service, a distributed and service-oriented computing technology, can be also applied to NGOSS TSA. In this paper, we provide a design and implementation of Web Services-based TSA in accordance with the architectural principles of TNA and the performance evaluation of our proposed system. Our work can be used as a guideline for anyone planning to develop a Web Services-based NGOSS TSA.     

Perceived Subjective Features of Software Components: Consumer Behavior in a Software Component Market

Component-based software reuse has been generally regarded as a promising approach to improving software productivity and quality within software development. However, progress in component-based software reuse has been slower than expected. Much of the software reuse literature points to the lack of software components that can maximize users’ benefits as the most important source of the slow progress. Considering that the underlying processes behind component-based software reuse are strikingly similar to commercial software marketing, this paper attempts to identify the aspects of software components that consumers value and to establish relationships between the identified aspects and consumer behavior in the software component market. More specifically, this paper focuses on the perceived subjective features of software components. This study was conducted in a web-based artificial market environment called “SofTrade.”     

一种构件标签自动提取方法及其实现

基于构件的软件复用的前提之一是存在并能够找到大量可复用的构件,软件构件库是对软件构件进行管理的基础设施,其作用是对大量构件进行管理,并辅助软件开发者找到合适的构件.在构件库中,基于构件标签的分类管理是一种新型的构件信息分类管理方法,该方法使用构件标签(Tag)对构件进行管理,并支持用户通过选择标签进行构件检索,该方法能够更直接的反应构件的特性,并能够有效提高检索效率.然而,由于构件库中许多构件没有构件标签,而通过人工的方法为构件库中存在的构件资源添加标签需要耗费大量的时间和人力资源,特别是当构件数量较大时,通过人工方式为构件添加标签是难以实现的.因此本文提出了一种基于分类的构件标签自动提取方法,该方法能够根据构件描述信息自动提取构件标签.本文对基于该方法的构件标签自动提取工具的实现进行了论述,并通过实验验证了该工具的有效性.     

支持网络动态重构的可信构件模型

基于构件接口分离原则和动态软件体系结构技术,提出了一种支持网络动态重构的可信构件模型,对构件构造和组装进行了分析,并提出了可信数据安全封装机制。基于感知、决策和执行分离机制,构件模型可以支持构件重构,通过容器对构件数据进行安全封装,构件模型可以检测和阻止恶意构件的非法操作,保护构件间的数据安全传递。实现了支持可信构件模型的容器原型,实验表明,使用该模型可进行构件连接拓扑关系的重构,可及时发现恶意构件并暂停构件运行,提高了节点的可信性。     

基于可重用组件技术的软件开发方法

采用软件重用技术是解决软件危机的重要途径,基于组件技术的软件工程是重要的软件重用技术。文中提出了一种利用可重用组件进行软件开发的方法,使整个软件开发过程围绕着软件重用进行展开,并且对其中的一些技术细节进行了详细的阐述。     

A component-based software architecture for robotic workcellapplications

This paper describes a component-based software architecture for the development of robotic workcell applications. First, robotic workcells are defined and the underlying technology is discussed. Next, the software architecture is described in detail, including the components, their interactions and the underlying policies. The paper concludes with a brief summary of results and a discussion of future architectural directions     

一种支持变化性的构件模型JBCOM/E

在基于构件的软件开发中,构件模型是基础,领域变化性是关键因素之一.为此,本文在原有构件模型的基础上,提出了抽象构件的概念,使之能对一族具有领域共性和变化性的构件进行定义与描述.文中就抽象构件的定义、规约语言描述以及相应的构件组装和构件管理等问题进行了讨论,定义了一种支持变化性的构件模型JBCOM/E,并给出了一个应用实例-青鸟POS领域平台.     

The potential for open source software in telecommunications operational support systems

Over the last five years, open source software has moved into mainstream areas such as Internet and financial applications, with software such as Linux and Apache Web Server now supporting mission-critical operations. Open source software can offer both cost reductions and improvements in software quality. However, the uptake by incumbent telecommunications providers has been virtually zero, instead focusing on major commercial-off-the-shelf (COTS) packages, due to a mixture of prior strategic investments and perceptions over open source risks. This paper addresses the scope for use of open source software in telecommunications operational support systems (OSS). Firstly, the technical scope for open source software is addressed, covering the maturity of available open source software components, and the ways in which these components can have an impact on OSS software architecture. Secondly, the commercial aspects are presented, covering benefits, commercial models and risks. An OSS life cost comparison of open source versus COTS software is included. Thirdly, a test OSS created by BT using primarily open source software, combined with OSS standards to provide a minimum cost base, is presented and analysed. The paper concludes with a statement on the potential for the use of open source software in OSS, and suggests possible next steps.     

精益运营呼唤新一代电信运营支撑系统

本文介绍了电信运营企业进行企业转型的内外原因,论述了精益运营的内涵以及实现精益运营的七个步骤,分析了精益运营对电信运营支撑系统的转型要求,通过介绍中国电信的相关实践活动,印证了转型的必要性.     

OSS through Java — a standards-based approach to integration

Designing application programming interfaces (APIs) for reuse is a balance between making an API easy to use while ensuring that it is generic enough to support a range of client requirements. This is easier to achieve in theory than practice, requiring in-depth knowledge of the business domain and implementation technology.The OSS through Java™ (OSS/J™) Initiative comprises equipment vendors, independent software vendors (ISVs) and system integrators (SIs) that are producing a practical set of Java 2 Platform, Enterprise Edition (J2EE™) based APIs designed to support the business and technology goals of a telecommunications service provider.This paper overviews the work of the OSS/J Initiative and evaluates the likelihood of it being adopted and reused as the standard practice for operational support systems interfaces.