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首页> 外文会议>Air Traffic Control Association Annual Conference; 20071028-31; Washington,DC(US) >TRANSLATING RELIABILITY PARAMETERS INTO A ROBUST DESIGN FOR SAFETY CRITICAL ATC COMMUNICATION ENVIRONMENTS
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TRANSLATING RELIABILITY PARAMETERS INTO A ROBUST DESIGN FOR SAFETY CRITICAL ATC COMMUNICATION ENVIRONMENTS

机译：将可靠性参数转换为安全关键ATC通信环境的稳健设计

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摘要

Today, every modern organization aspires to improve its performance through better use of information technology. As communication technology improves, organizations can operate over wider distances and can even assemble operational components on an ad hoc basis to meet requirements of a specific objective. Whatever a technical solution might look like, there will be a continuing need for a ground network element, going along with some, probably significant, improvements in air-ground communication and surveillance techniques. Existing ATM communication systems may have grown to a point of complexity where it becomes difficult to manage, evolve, or replace them, while the demand for reliability, connectivity, and new features continues to increase. This paper discusses various approaches of connecting ATM clients (the consumers of ATM services) with their desired ATM services. This paper has a strong theoretical touch. It is not intended to give concrete advice nor propose a specific architecture. Even the highly complex problem of describing software reliability quantitatively has been spared out within this contribution. In the opinion of the authors each ATC communication problem must be considered thoroughly taking into account the peculiarity of the situation. There is no all valid general guideline for doing this but some of the ideas introduced in this paper could be valuable. Availability parameters are mapped into reliability requirements. These requirements could define the performance and reliability of the individual participants in the network (e.g. Maximum tolerable latency of communication services failure detection). Premises of a network design in ATC are the assumption of closed user groups and a deterministic number of consumers and services, and sufficient bandwidth availability in the underlying wide area network It leads to an independent optimization of the communication network and the higher layers. Practical issues like the connection of an end device to the communication network are not considered. Advantages of this concept could be the ease of implementation, the resulting higher reusability, reduced costs, and the achieved independence of the underlying telecommunications infrastructure. The paper discusses reliability engineering concepts and describes the mathematical models based on Markov State Diagrams. These elaborations are the basis for a robust design of a safety critical communications environment. The result is some sort of a guideline to develop network performance parameters based on a mathematical model and reliability calculations.
机译：如今，每个现代组织都希望通过更好地利用信息技术来提高其绩效。随着通信技术的改进，组织可以在更远的距离上进行操作，甚至可以临时组装操作组件以满足特定目标的要求。无论采用什么样的技术解决方案，都将继续需要地面网络元素，同时对空地通信和监视技术进行一些可能很重要的改进。现有的ATM通信系统可能已经发展到复杂的程度，难以管理，发展或替换它们，而对可靠性，连接性和新功能的需求却不断增加。本文讨论了将ATM客户端（ATM服务的使用者）与其所需的ATM服务连接起来的各种方法。本文具有很强的理论意义。它既不打算提供具体建议，也不打算提出特定的体系结构。在此贡献中，甚至避免了定量描述软件可靠性的高度复杂的问题。作者认为，必须考虑到情况的特殊性，彻底考虑每个ATC通信问题。尚无所有有效的通用指南来执行此操作，但本文中介绍的某些想法可能是有价值的。可用性参数映射到可靠性要求中。这些要求可以定义网络中各个参与者的性能和可靠性（例如，通信服务故障检测的最大可容忍延迟）。在ATC中进行网络设计的前提是假设封闭的用户组以及确定数量的使用者和服务，以及底层广域网中足够的带宽可用性，这导致对通信网络和更高层的独立优化。不考虑诸如终端设备与通信网络的连接之类的实际问题。此概念的优点可能是易于实施，所产生的更高的可重用性，降低的成本以及所获得的基础电信基础结构的独立性。本文讨论了可靠性工程概念，并描述了基于马尔可夫状态图的数学模型。这些阐述是安全设计关键通信环境的基础。结果是某种基于数学模型和可靠性计算来开发网络性能参数的准则。

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