信息技术.项目管理的射频识别.第6部分:860 MHz至960 MHz空中接口通信用参数

[中文适用范围]： ISO/IEC 18000 的这一部分定义了在项目管理应用中使用的在 860 MHz 至 960 MHz 工业、科学和医疗 (ISM) 频段运行的射频识别 (RFID) 设备的空中接口。 其目的是为 RFID 设备提供通用技术规范，供制定 RFID 应用标准的 ISO 委员会使用。 ISO/IEC 18000 的这一部分旨在实现兼容性并鼓励国际市场中不断增长的 RFID 市场产品的互操作性。 ISO/IEC 18000 的这一部分定义了技术属性的前向和返回链路参数，包括但不限于工作频率、工作信道精度、占用信道带宽、最大 EIRP、杂散发射、调制、占空比、数据编码、比特速率、比特率精度、比特传输顺序以及适当的操作信道、跳频速率、跳频序列、扩频序列和码片速率。 它进一步定义了空中接口中使用的通信协议。 ISO/IEC 18000的这一部分包含一种模式两种类型。 两种类型都使用共同的返回链接，并且首先是读者讨论。 A 类在前向链路中使用脉冲间隔编码 (PIE) 以及自适应 ALOHA 冲突仲裁算法。 B型在前向链路中使用曼彻斯特和自适应二叉树冲突仲裁算法。 两种类型之间的详细技术差异如参数表所示。 [外文原描述]： ISO/IEC 18000-6:2004 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. Its purpose is to provide a common technical specification for RFID devices that may be used by ISO committees developing RFID application standards. ISO/IEC 18000-6:2004 is intended to allow for compatibility and to encourage inter-operability of products for the growing RFID market in the international marketplace. ISO/IEC 18000-6:2004 defines the forward and return link parameters for technical attributes including, but not limited to, operating frequency, operating channel accuracy, occupied channel bandwidth, maximum 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 18000-6:2004 contains one mode with two types. Both types use a common return link and are reader talks first. Type A uses Pulse Interval Encoding (PIE) in the forward link, and an adaptive ALOHA collision arbitration algorithm. Type B uses Manchester in the forward link and an adaptive binary tree collision arbitration algorithm. The detailed technical differences between the two types are shown in the parameter tables.