TSM系统中高层软件测试的方法

任何一个软件，在开发过程中都不可避免地存在错误。软件测试的目的就是跟踪出软件的错误，不同种类的软件开发和测试工具是不相同的。介绍软件测试的基本概念、原理以及方法。主要介绍Telelogical Tau AB公司的TTCN的测试机理，并利用TTCN进行TSM(TD-SCDMA移动通信系统)高层信令测试的方法。     

用户数据报协议的一致性测试研究

Internet协议的一致性测试是保证厂商的Internet产品和服务实现互连和互通的重要技术手段。文章在扼要介绍用户数据报协议UDP的基础上,依托协议集成测试系统(PITS)给出了用户数据报协议UDP的测试方法、测试组织和测试集结构,最后介绍了利用此系统进行的实际的UDP测试活动,并给出了测试结果和分析。     

一种基于移动代理的新型网管接口一致性测试模型的研究

为解决传统的网管接口测试方法中存在的智能性和灵活性不够等缺点,文中提出了针对网管的接口一致性测试模型,将移动代理技术应用到网络管理的测试中,着重体现了一种新型的网管测试技术。     

国外运营商认证测试要求

介绍了不同层面的终端测试,即强制性测试、终端一致性测试和运营商认证测试。对国外运营商认证测试、运营商认证流程以及欧洲和北美运营商的测试要求和测试内容进行了阐述,并给出了一个运营商定义的测试例。     

A dependency constraint language to manage object‐oriented software architectures

This paper presents a domain‐specific dependency constraint language that allows software architects to restrict the spectrum of structural dependencies, which can be established in object‐oriented systems. The ultimate goal is to provide architects with means to define acceptable and unacceptable dependencies according to the planned architecture of their systems. Once defined, such restrictions are statically enforced by a tool, thus avoiding silent erosions in the architecture. The paper also presents results from applying the proposed approach to different versions of a real‐world human resource management system. Copyright © 2009 John Wiley & Sons, Ltd.     

Information Technology Measurement and Testing Activities at NIST

Our high technology society continues to rely more and more upon sophisticated measurements, technical standards, and associated testing activities. This was true for the industrial society of the 20th century and remains true for the information society of the 21st century. Over the last half of the 20th century, information technology (IT) has been a powerful agent of change in almost every sector of the economy. The complexity and rapidly changing nature of IT have presented unique technical challenges to the National Institute of Standards and Technology (NIST) and to the scientific measurement community in developing a sound measurement and testing infrastructure for IT. This measurement and testing infrastructure for the important non-physical and non-chemical properties associated with complex IT systems is still in an early stage of development. This paper explains key terms and concepts of IT metrology, briefly reviews the history of the National Bureau of Standards/National Institute of Standards and Technology (NBS/NIST) in the field of IT, and reviews NIST’s current capabilities and work in measurement and testing for IT. It concludes with a look at what is likely to occur in the field of IT over the next ten years and what metrology roles NIST is likely to play.     

A Supervisory Control Method for Ensuring the Conformance of Real-Time Discrete Event Systems

In this article, we study the problem of controlling a plant described as a real-time discrete event system. The aimed objective is to ensure a conformance relation denoted tioco between the plant and the formal specification of the system, by means of a supervisor. We adopt a two-step approach. In Step 1, we express the problem into a non-real-time form, by using a transformation of timed automata (TA) into particular finite state automata called Set-Exp-Automata (SEA). The latter use two additional types of events, Set and Exp. And in Step 2, we propose a non-real-time control method suitable for SEA. We also propose a control architecture.     

一种低复杂度信道模拟器的设计

针对TD-LTE射频一致性测试系统专项的需求及通用信道模拟器设计周期长、复杂度高的现状,研究了影响无线信道特性的路径损耗、阴影衰落、多径多普勒效应和高斯白噪声等因素,并相应提出了一种新的计算正余弦函数方法和高斯白噪声产生方法。通过信道理论建模、Matlab链路搭建进行模型优化分析以及基于Xilinx公司Virtex-6芯片的模型FPGA实现,得到了一种简单有效的信道模拟器。实验表明,用TD-LTE基带信号作为激励,该信道冲激响应与Matlab理论值误差在2‰之内,且模型不涉及SCM、WINNER等模型天线方向图、多链路等高复杂度模块,说明该信道模拟器具有简便性和可靠性。     

工业无线技术ISAl00标准及认证发展现状

该文简述了ISA100．11a标准的概念,在此基础上浅析了ISA100．11a标准认证目前的进展情况,包括对认证项目、实施机构和认证流程等相关认证信息进行描述。