信息技术——自动识别和数据采集技术——移动RFID询问器的空中接口规范

[中文适用范围]： 本国际标准适用于移动射频识别 (RFID) 询问器设备，用于在移动（非固定）应用中清查 860 MHz 至 960 MHz 的无源或半无源反向散射标签，独立于特定通信细节，即调制技术和命令放。 此外，该国际标准的范围是移动消费者应用程序，而只要在封闭环境中运行，则不涵盖移动企业应用程序。 如果操作环境属于中央管理机构，能够保证足够的隔离，即防止移动企业询问器设备在专用操作环境之外使用，并且与相邻操作环境有足够的空间隔离和/或电磁屏蔽，则该操作环境被认为是封闭的。 提供运行环境。 如果两个交互实体中至少有一个是私人（消费者）并且交互发生在公共领域，则应用程序被视为消费者应用程序。 因此，移动RFID消费者应用被定义为在消费者应用中使用的移动RFID设备（例如配备有RFID询问器的移动电话）。 注：由于目前没有关于移动高频询问器的积极贡献，因此本国际标准仅涵盖 UHF。 本国际标准规定 - 移动 RFID 询问器媒体访问控制; ——询问器到询问器和多个询问器到标签冲突仲裁方案，包括询问器要求; ——询问器到询问器和多个询问器到标签冲突避免方案，以及 - 移动 RFID 应用的标签存储器使用。 本国际标准没有规定 - 询问器和标签之间的物理交互（通信链路的信令层）; ——询问器和标签操作程序和命令，以及 - 用于分离（与当前响应时隙分开）的冲突仲裁算法多标签环境中的特定标签。 注：这些方面已由其他国际标准解决。 特别是，该国际标准不会取代 ISO/IEC 发布的任何现有 RFID 空中接口规范，而是通过解决移动 RFID 特殊挑战的机制扩展了固定 RFID 询问器的现有方法。 本国际标准中描述的概念和机制可以集成到 ISO/IEC 批准的任何现有 RFID 协议中，适用于 860 MHz 至 960 MHz 的给定频率范围（除非此类协议明确禁止），无论实际命令集如何。 该国际标准定义的机制可用于消费类应用中使用的移动 RFID 阅读器，并且符合 ISO/IEC 18000-6。 [外文原描述]： ISO/IEC 29143:2011 provides an air interface specification for Mobile radio frequency identification (RFID) interrogators being part of a passive backscatter system. This system comprises one or more mobile interrogators, also known as Mobile RFID interrogators, and an undefined number of tags, also known as labels. Interrogators are not required to support channel sensing, i.e. do not need to implement Listen Before Talk (LBT), and transmit commands on the off chance under the risk of colliding with one or more peer-interrogators. Moreover, interrogators compliant to ISO/IEC 29143:2011 are not obliged to synchronize by any means (wired or wireless), i.e. no control channel dedicated to coordinating Time Division Multiplexing (TDM) is provided. Tags are powered by the RF signal provided by the interrogator and respond to an interrogator by modulating the reflection coefficient of its antenna, thereby backscattering data to the interrogator. The working mode adopted by the tags is purely passive, i.e. tags do not actively initiate any kind of RF communication. In ISO/IEC 29143:2011, collision arbitration and collision avoidance for Mobile RFID applications are defined by specifying methods aimed at mitigating the impact of emerging collisions and mechanisms used to avoid follow-up collisions. ISO/IEC 29143:2011 applies to Mobile RFID interrogator devices used to inventory passive or semi-passive backscatter tags at 860 MHz to 960 MHz in a mobile (non-fixed) application independent from specific communication details, i.e. modulation technique and command set. Furthermore, the scope of ISO/IEC 29143:2011 is mobile consumer applications, whereas mobile enterprise applications are not covered as long as operating in a closed environment. An operating environment is considered to be closed if it belongs to a central administrative authority able to guarantee for sufficient isolation, i.e. preventing mobile enterprise interrogator devices from being used outside the dedicated operating environment, and if sufficient spatial separation and/or electromagnetic shielding from adjacent operating environments is provided. An application is considered a consumer application if at least one of two interacting entities is a private individual (consumer) and the interaction is taking place in the public domain. Consequently, a Mobile RFID consumer application is defined as Mobile RFID equipment (e.g. mobile phones equipped with an RFID interrogator) being used in a consumer application. NOTE As there is currently no active contribution on Mobile HF interrogators, ISO/IEC 29143:2011 covers only UHF. ISO/IEC 29143:2011 specifies Mobile RFID interrogator media access control, interrogator to interrogator and multiple interrogator to tag collision arbitration scheme including interrogator requirements, interrogator to interrogator and multiple interrogator to tag collision avoidance scheme, and tag memory use for Mobile RFID applications. ISO/IEC 29143:2011 does not specify physical interactions (the signaling layer of the communication link) between interrogators and tags, interrogator and tag operating procedures and commands, and the collision arbitration algorithm used to singulate (separate to the current response slot) a specific tag in a multiple-tag environment. In particular, ISO/IEC 29143:2011 does not replace any existing RFID air interface specification issued by ISO/IEC but extends the existing methodologies for fixed RFID interrogators with mechanisms addressing the special challenges of Mobile RFID. The concepts and mechanisms described in ISO/IEC 29143:2011 can be integrated in any existing RFID protocol approved by ISO/IEC for the given frequency range of 860 MHz to 960 MHz (unless explicitly prohibited by such protocol) regardless of the actual command set. The mechanisms defined by ISO/IEC 29143:2011 can be used for Mobile RFID interrogators used in consumer applications and compliant to ISO/IEC 18000-6.