Geographic information — Location-based services — Reference model
地理信息——基于位置的服务——参考模型
发布日期:
2007-10-16
ISO 19132:2007定义了基于位置的服务(LBS)的参考模型和概念框架,并描述了LBS应用程序可以互操作的基本原则。该框架引用或包含一个本体、一个分类法、一组设计模式和一组核心的UML LBS服务抽象规范。ISO 19132:2007进一步规定了该框架与其他地理信息框架、应用程序和服务以及与客户端应用程序的关系。
ISO 19132:2007针对LBS系统提出了开放分布式处理参考模型(RM-ODP,见ISO/IEC 10746-1)中定义的前三个基本观点。这些观点是企业观点——详细说明系统的目的、范围和政策;信息观点——详细说明系统内信息和处理的语义;计算视角——详细描述系统的功能分解。
第四和第五种观点仅在需求或示例中讨论。这些是工程观点——详细说明配电基础设施;技术观点——详述实施技术;
参考模型和框架可以在不同的层次上定义,从概念设计到软件文档。ISO 19132:2007定义了LBS中包含的概念框架和应用类型,为移动和固定客户端建立了LBS的一般原则,规定了漫游时数据访问的接口,定义了与其他ISO地理信息标准的体系结构关系,并确定了需要进一步制定LBS标准的领域。
ISO 19132:2007没有涉及开发LBS的规则,也没有涉及移动客户端和跟踪目标漫游协议的一般原则。
ISO 19132:2007 defines a reference model and a conceptual framework for location-based services (LBS), and describes the basic principles by which LBS applications may interoperate. This framework references or contains an ontology, a taxonomy, a set of design patterns and a core set of LBS service abstract specifications in UML. ISO 19132:2007 further specifies the framework's relationship to other frameworks, applications and services for geographic information and to client applications.
ISO 19132:2007 addresses, for an LBS system, the first three basic viewpoints as defined in the Reference Model for Open Distributed Processing (RM-ODP, see ISO/IEC 10746-1). These viewpoints are the Enterprise Viewpoint – detailing the purpose, scope, and policies of the system; Information Viewpoint – detailing the semantics of information and processing within the system; Computational Viewpoint – detailing the functional decomposition of the system.
The fourth and fifth viewpoints are addressed only in requirements or examples. These are the Engineering Viewpoint – detailing the infrastructure for distribution; Technology Viewpoint – detailing the technology for implementation;
Reference models and frameworks can be defined at a variety of levels, from conceptual design to software documentation. ISO 19132:2007 defines the conceptual framework for and the type of applications included within LBS, establishes general principles for LBS for both mobile and fixed clients, specifies the interface for data access while roaming, defines the architectural relationship with other ISO geographic information standards, and identifies areas in which further standards for LBS are required.
ISO 19132:2007 does not address rules by which LBS are developed, nor general principles for roaming agreements for mobile clients and tracking targets.