信息技术.项目管理的射频识别.第63部分:860 MHz到960 MHz C型空中接口通信用参数

[中文适用范围]： 本部分ISO/IEC 18000定义了工作在860 MHz至960 MHz工业、科学和医疗（ISM）频段用于物品管理的射频识别（RFID）设备的空中接口。它为RFID设备提供了通用的技术规范，ISO委员会可据此制定RFID应用标准。本部分旨在实现兼容性并促进国际市场日益增长的RFID产品的互操作性。它定义了技术属性包括（但不限于）工作频率、工作信道精度、占用信道带宽、最大有效全向辐射功率（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、扩频序列和码速率的前向和返回链路参数。它还定义了空中接口中使用的通信协议。本部分ISO/IEC 18000规定了工作在860 MHz至960 MHz频段的无源背射、读写器先发（ITF）系统的物理和逻辑要求。该系统由读写器（也称为读卡器）和标签（也称为标签）组成。读写器通过向标签发射连续波（CW）射频信号来接收来自标签的信息；标签通过调制其天线的反射系数来响应，从而将信息信号背射回读写器。该系统是ITF系统，意味着标签仅在读写器的指示下才调制其天线的反射系数以发送信息信号。详细来说，本部分ISO/IEC 18000包含C型。C型在前向链路中使用脉冲间隔编码（PIE）和随机时隙碰撞仲裁算法。本部分ISO/IEC 18000规定了以下方面：读写器和标签之间的物理交互（通信链路的信令层）、读写器和标签的操作过程及命令、用于在多标签环境中识别特定标签的碰撞仲裁方案。 [外文原描述]： ISO/IEC 18000-63:2013 defines the air interface for radio frequency identification (RFID) devices operating in the 860 MHz to 960 MHz Industrial, Scientific, and Medical (ISM) band used in item management applications. It provides a common technical specification for RFID devices that can be used by ISO committees developing RFID application standards. It is intended to allow for compatibility and to encourage inter-operability of products for the growing RFID market in the international marketplace. It defines the forward and return link parameters for technical attributes including, but not limited to, operating frequency, operating channel accuracy, occupied channel bandwidth, maximum effective isotropic 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. It further defines the communications protocol used in the air interface. ISO/IEC 18000-63:2013 specifies the physical and logical requirements for a passive-backscatter, Interrogator-Talks-First (ITF) systems. The system comprises Interrogators, also known as readers, and tags, also known as labels. An Interrogator receives information from a tag by transmitting a continuous-wave (CW) RF signal to the tag; the tag responds by modulating the reflection coefficient of its antenna, thereby backscattering an information signal to the Interrogator. The system is ITF, meaning that a tag modulates its antenna reflection coefficient with an information signal only after being directed to do so by an Interrogator. ISO/IEC 18000-63:2013 contains Type C. Type C uses PIE in the forward link and a random slotted collision-arbitration algorithm. ISO/IEC 18000-63:2013 specifies physical interactions (the signalling layer of the communication link) between Interrogators and tags, Interrogator and tag operating procedures and commands, the collision arbitration scheme used to identify a specific tag in a multiple-tag environment.