本文件定义了支持个人/车辆（P/V）ITS站和中心ITS站之间室内导航功能的详细用例、要求和消息规范。 本文件定义: a） 基于P/V ITS站和中心ITS站之间室内导航处理流的用例集群； b） 源自室内导航用例集群的详细用例； c） 支持一些详细用例的消息规范。消息规范包括强制、条件和可选元素。 本文件仅适用于室内空间导航功能的核心流程。以下问题是辅助性的，但对商业导航服务至关重要，超出了本文件的范围: -用户和服务的授权和认证访问，包括安全性； -支付； -准备室内导航所需的室内数据； -室内导航数据的详细数据格式，包括室内地图和室内定位参考（它们构成ISO 17438-2[1]和ISO 17438-3[2]的一部分）； -如何在路边ITS站和中央ITS站之间传输和共享室内导航所需的数据，即低层通信协议； -其他问题取决于室内导航实例的实施，例如室内室外无缝导航。 本文档使用ISO 13184-2中定义的XML和数据交换消息（DXM）格式对定义的消息进行编码。 [1] 正在开发中。当前阶段0.00。 [2] 正在开发中。当前阶段0.00。

This document defines detailed use cases, requirements and message specifications for supporting indoor navigation functionality between a personal/vehicle (P/V) ITS station and a central ITS station. This document defines: a) Clusters of use cases based on processing flows for indoor navigation between a P/V ITS station and a central ITS station; b) Detailed use cases derived from the clusters of use cases for indoor navigation; c) Message specifications to support some of the detailed use cases. The message specifications include mandatory, conditional and optional elements. This document is only applicable to the core flow for the navigational functionality in indoor space. The following issues which are adjunctive but essential for commercial navigation services are beyond the scope of this document: — Authorized and authenticated access of users and services, including security; — Payment; — Preparation of indoor data which are necessary for indoor navigation; — Detailed data formats for indoor navigation data, including indoor maps and indoor positioning references (these form a part of ISO 17438-2[1] and ISO 17438-3[2]); — How to transfer and share data required for indoor navigation between a roadside ITS station and a central ITS station, i.e. low-level communication protocols; — Other issues dependent on implementation of an instance of indoor navigation, e.g. indoor-outdoor seamless navigation. This document uses the XML and Data eXchange Message (DXM) format defined in ISO 13184-2 to encode defined messages. [1] Under development. Current stage 0.00. [2] Under development. Current stage 0.00.