Information technology -- Radio frequency identification for item management -- Part 64: Parameters for air interface communications at 860 MHz to 960 MHz Type D
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 18000-64:2012 specifies the physical and logical requirements for a passive-backscatter, Tag Only Talks After Listening (TOTAL) RFID system. 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 TOTAL, meaning that a tag modulates its antenna reflection coefficient with an information signal upon entering an Interrogator's field after first listening for Interrogator modulation in order to determine if the system is ITF or not.
ISO/IEC 18000-64:2012 contains Type D.
Type D is TOTAL based on Pulse Position Encoding or Miller M=2 encoded subcarrier.
ISO/IEC 18000-64:2012 specifies
- physical interactions (the signalling layer of the communication link) between Interrogators and tags,
- Interrogator and tag operating procedures,
- the collision arbitration scheme used to identify a specific tag in a multiple-tag environment.
|Publication type||International Standard|
|TC/SC||ISO/IEC JTC 1/SC 31 - Automatic identification and data capture techniquesrss|
|ICS||35.040.50 - Automatic identification and data capture techniques|
|File size||1414 KB|
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