ISO/IEC 18000-63 Parameters for air interface communications at 860 MHz to 960 MHz Type C
ISO/IEC 18000-63 is referred as a Part 6C of ISO/IEC 18000 to explain the parameters for RFID (Radio Frequency Identification) devices that need access mode to operate between 860 MHz to 960 MHz. This part of ISO/IEC 18000 explains the parameters for those RFID devices that use ISM (Industrial, Scientific and Medical) band in inventory management applications. It plays an essential role to grow the RFID marketplace internationally by providing compatibility between standards and by supporting the interoperability of wireless products working at ISM band.
Besides, ISO committees and associates use ISO/IEC 18000-63 to design standards for RFID devices by following technical requirements. It also explains type and number of communication protocols required in the air interface for RFID devices operating at 860 to 960 MHz Type C.
Since the RFID system contains both forward and receiver link, technical specifications are paramount to transfer the communicating signal from transmitter to receiver and vice versa. Technical parameters such as fc (operating frequency), the accuracy of the operating medium, operating bandwidth of the channel, modulation technique, coding scheme, bit rate, chip rate, data rate, duty cycle, hopping frequency, scattering sequence, spurious radiations, bit transmission order and the list go on and on.
Another purpose of ISO/IEC 18000-63 is to explain the physical and logical specifications for a passive-backscattered ITF (Interrogator-Talks-First) system. The basic structure of the RFID system contains interrogators and tags where interrogators are also called readers, and tags are also known as labels. In a passive-backscattered ITF system, the reader transmits the continuous wave of RF signal to the label to receive the valuable information stored inside the tag. The system is called backscattered as the label responds through the modulation of the reflection coefficient of its antenna. The term ITF is associated with this system as the tag doesn’t respond to the interrogator until getting a continuous wave from the reader.
As we described above, ISO/IEC 18000-63 describes parameters for air interface communication protocol for Type C, which requires PIE in the transmitting link and the algorithm of a random slotted collision-arbitration.
In conclusion, ISO/IEC 18000-63 comprises of four functions;
- To describe the physical interactions or signaling layer of the communication link between readers and labels.
- To describe the logical standards, commands, requirements between interrogators and tags.
- To specify a collision attribution scheme for selecting a specific tag in a multiple-tag environment.
- To explain which optional security commands are needed for letting the usage of crypto suites of ISO/IEC 29167.
