信息技术 - 项目管理的射频识别 - 第4部分:空中接口通信参数为2,45 Ghz

[中文适用范围]： 本文件定义了用于物品管理应用的射频识别 (RFID) 设备在 2.45 GHz 工业、科学和医疗 (ISM) 频段工作的空中接口。本文件提供了 RFID 设备的通用技术规范，可供制定 RFID 应用标准的 ISO 委员会使用。本文件旨在实现兼容性，并鼓励产品在国际市场上不断增长的 RFID 市场中实现互操作性。本文件定义了前向和反向链路参数，这些参数用于技术属性，包括但不限于工作频率、工作信道精度、占用信道带宽、最大等效全向辐射功率 (EIRP)、杂散发射、调制、占空比、数据编码、比特率、比特率精度、比特传输顺序，以及在适当情况下的工作信道、跳频速率、跳频序列、扩频序列和码片速率。本文件进一步定义了空中接口中使用的通信协议。本文件包含四种模式。模式 1 是询问器首先与无源标签进行通信。模式 2 是标签首先与电池辅助无源标签进行通信。模式 3 是一种全球可用、无处不在的网络，支持（但不限于）物流和运输行业；它与任何需要全球可用性的商用或其他设备无关。模式 4 是一种可配置数据速率的有源 RFID 系统。它提供远距离物体识别和环境感知功能，旨在实现低成本、低功耗、远距离识别以及快速可靠的标签访问。参数表中显示了不同模式之间的详细技术差异。 [外文原描述]： This document defines the air interface for radio frequency identification (RFID) devices operating in the 2,45 GHz industrial, scientific, and medical (ISM) band used in item management applications. This document provides a common technical specification for RFID devices that can be used by ISO committees developing RFID application standards. This document is intended to allow for compatibility and to encourage inter-operability of products for the growing RFID market in the international marketplace. This document defines the forward and return link parameters for technical attributes including, but not limited to, operating frequency, operating channel accuracy, occupied channel bandwidth, maximum equivalent isotropically radiated power (EIRP), spurious emissions, modulation, duty cycle, data coding, bit rate, bit rate accuracy, bit transmission order, and where appropriate, operating channels, frequency hop rate, hop sequence, spreading sequence, and chip rate. This document further defines the communications protocol used in the air interface. This document contains four modes. Mode 1 is an interrogator talks first with passive tag. Mode 2 is a tag talks first with battery-assisted passive tag. Mode 3 is a globally available, ubiquitous network supporting (but not limited to) the logistics and transportation industry; agnostic to any device, commercial or otherwise, requiring global availability. Mode 4 is a configurable data rate active RFID system. It provides the functions of long range objects identification and environmental sense, and it is intended to realize the low cost device and low power consumption, long range identification, fast and reliable tags access. The detailed technical differences between the modes are shown in the parameter tables.