标准编号：ISO/IEC 18000-6:2010
中文名称：信息技术 项目管理的射频识别 第6部分：860 MHz-960 MHz空中接口通信参数
英文名称：Information technology — Radio frequency identification for item management — Part 6: Parameters for air interface communications at 860 MHz to 960 MHz
发布日期：2010-12
标准范围
This part of ISO/IEC 18000 defines the air interface for radio frequency identification (RFID) devices operatingin the 860 MHz to 960 MHz Industrial, Scientific, and Medical (ISM) band used in item managementapplications. It provides a common technical specification for RFID devices that can be used by ISOcommittees developing RFID application standards. This part of ISO/IEC 18000 is intended to allow forcompatibility and to encourage inter-operability of products for the growing RFID market in the internationalmarketplace. It defines the forward and return link parameters for technical attributes including, but not limitedto, operating frequency, operating channel accuracy, occupied channel bandwidth, maximum effectiveisotropic radiated power (EIRP), spurious emissions, modulation, duty cycle, data coding, bit rate, bit rateaccuracy, bit transmission order, and, where appropriate, operating channels, frequency hop rate, hopsequence, spreading sequence, and chip rate. It further defines the communications protocol used in the airinterface.This part of ISO/IEC 18000 specifies the physical and logical requirements for a passive-backscatter,Interrogator-Talks-First (ITF) or tag-talks-only-after-listening (TOTAL) RFID system. The system comprisesInterrogators, and tags, also known as labels. An Interrogator receives information from a tag by transmitting acontinuous-wave (CW) RF signal to the tag; the tag responds by modulating the reflection coefficient of itsantenna, thereby backscattering an information signal to the Interrogator. The system is ITF, meaning that atag modulates its antenna reflection coefficient with an information signal only after being directed to do so byan Interrogator, or TOTAL, meaning that a tag modulates its antenna reflection coefficient with an informationsignal upon entering an Interrogator's field after first listening for Interrogator modulation in order to determineif the system is ITF or not.In detail, this part of ISO/IEC 18000 contains one mode with four types. The detailed technical differencesbetween the four types are shown in the associated parameter tables.Types A, B and C are ITF. Type A uses Pulse-Interval Encoding (PIE) in the forward link and an adaptiveALOHA collision-arbitration algorithm. Type B uses Manchester in the forward link and an adaptive binary-treecollision-arbitration algorithm. Type C uses PIE in the forward link and a random slotted collision-arbitrationalgorithm.Type D is TOTAL based on Pulse Position Encoding or Miller M=2 encoded subcarrier.This part of ISO/IEC 18000 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.
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