ISO IEC 18000-6:2013 download.Information technology — Radio frequency identification for item management — Part 6: Parameters for air interface communications at 860 MHz to 960 MHz General.
This part of ISOIIEC 18000 describes a passive backscatter radio frequency identification (RFID) system that
supports the following system capabibbes:
• identification and comrrna,icahon with multiple tags in the field:
• selection of a 5UbgrOUp of tags for identification or with which to communicate:
• reading from and writing to or rewnting data many tknes to mdividual tags:
• user-controlled permanently lockable memory:
• data mlegnty protection:
• Interrogator-to-tag communications bnk with error’ detection:
• tag-to-Interrogator communications lk’rk with error detection:
• support for both passive back-scatter tags with or without battefles
This part of ISO! IEC 18000 provides the overview for a passive-backscatter, RFIO system operating in the
860 MHz to 960 MHz frequency range. The system comprees Interrogators, also known as readers, and tags.
also known as labels. The general overview describes four Types called Type A. Type 8. Type C and Type D
Detads for each part are defined in the following docr,rments:
— Type A ISO/1EC 18000-61
— Type B ISOIIEC 18000-62
— Type C ISOI1EC 18000-63
— TypeD ISO!1EC 18000-64
This past of ISO1EC 18000 together with ISO 1EC 18000-61. ISOi1EC 18000-62. ISO/1EC 18000-63 and ISOI1EC 18000-64 specify the physical and lognal requirements for a passive-backacatter. RFID system operating in the 860 MHz to 960 MHz frequency range. The system comprises Interrogators, also known as readers, and tags, also known as labels.
An Interrogator transmits information to a tag by modulating an RF signal in the 860 MHz to 960 MHz frequency range. The tag receives both information and operating energy from thés RF signal. Passeie tags are those wllch receive all of their operating energy from the lnlerrogato?s RF waveform. If tags maintain a battery then they may operate using some passive pnnciples: however, they do not necessarily gel all their operating energy from the lnterrogator’s RF waveform.
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 backscatterlng an information signal to the Interrogator. The system is Interrogator-Talks-First (ITF) for Types A. B and C, meaning that a tag modulates its antenna reflection coefficient with an Information signal on’y after being directed to do so by an Interrogator.
Interrogators and tags are not required to talk simultaneously: rather, communications are half-duplex. meaning that Interrogators talk and tags bsten. or vice versa.
This part of ISOIIEC 18000 defines the air interface for radio frequency identification (RFIO) devices operating in the 860 MHz to 960 MHz Industrial, Scientific, and Medical (ISM) bend used in item management applications. II provides a common technical specification for RFID devices that can be used by ISO committees developing RFID apication standards. This part of ISO/IEC 18000 s intended to allow for compatibility and to encourage inter-operabdity of products for the gromng RFID market in the international niartwtplace. It defines the forward and return ink parameters for technical attributes including. but not lfrnited to, operating frequency, operating channel accuracy, occupied channel bandwidth, maximum effective otropic 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 al interface.
This part of ISOIIEC 18000, together with ISO/IEC 18000-61, ISOI1EC 18000-82, ISO/IEC 18000-63 and ISOIEC 18000-64 specifies the physical and logical requirements for a pass e-backscatter, Interrogator- Talks-First (ITF) or tag-ody-talks-after4istening (TOTAL) RFID system. The system comprises Interrogators. also known as readers, end 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 bactscattenng an information signal to Ihe Interrogator. The system is ITF. meaning that a tag modulates its antenna reflection coefficient with an information sigoal only after being directed to do so by an Interrogator, or TOTAL meaning that a tag modulates Its antenna reflection coefficient with an information signal upon entering an Interrogato s field after first listening for Interrogator modulation in order to determine if the system Is ITF or not.
This part of tSOI1EC 18000 contains one mode with four types. The detailed technical differences between the four types are shown in the associated parameter tables
Types A. B and C are rTF. 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 ink end an adaptive binary-tree collision-arbitration algorithm. Type C uses PIE in the forward link and a random slotted coNision-arbitration algorithm
Type D is TOTAL based on Pulse Position Encoding or Miter M=2 encoded subcamer.
This part of ISOIIEC 18000. together with ISO/IEC 18000-81. ISO/tEC 1800042. ISOIIEC 1800043 and lSO1EC 18000-64 specifies
— physical interactions (the signalling layer of the commurticatlon link) between Interrogators and tags.
— Interrogator and tag operating procedures and commands.
— the colision arbitration scheme used to identify a specific tag in a multiple-tag environment.
To conform to this part of ISO1IEC 18000. a tag shall not:
— implement any command that conflicts with this part of ISOIIEC 18000:
— require the use of an optional, proprietary, or custom command to meet the requirements of this part of ISOI1EC 16000; or
— modulate a backacatter signal unless commanded to do so by an Interrogator using the signalling layer defined in this part of ISOIIEC 18000 or, in the case of Type D. before lis*enmg for the absence ci tTF modulation.
3 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, onhj the edition cited applies. For undated references, the latest edition of the referenced document (includrng any amendments) applies,
ISOI1EC 18000-61. Information technology — Radio frequency identification for item management — Part 6. Parameters for air tnterf ace communIcations at 860 MHz to 960 MHz Type A
ISO9EC 18000-62, Infom’ration technology — Radio frequency identification for item management — Part 6:
Parameters for air interface communcabons at 860 MHz to 960 MHz Type B
ISOI1EC 18000-63, Information technology — Radio frequency identification for item management — Part 6:
Parameters for air interface conir untcations at 860 MHz to 960 MHz Type C
ISOIIEC 18000-64. Information technology — Radio frequency identification for item management — Part 6:
Parameters for air interface communIcations at 860 MHz to 960 MHz TypeD
ISOI1EC 19762 (all parts), Information technology — Automatic identification and data capture (AIDC) techniques — Harmonized vocabulary
4 Terms, definitions, symbols and abbreviated terms
4.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO1IEC 19762 (all parts) and the following apply.
4.1.1
slotted random anticollision
collision-arbitration algorithm where tags load a random (or pseudo-random) number Into a slot counter. decrement this slot counter based on Interrogator commands, and reply to the Interrogator when their slot counter reaches zero
4.2 Symbols
U number of subcanier cycles per symbol
Ull unique item identifier
4.3 AbbrevIated terms
CRC cyclic redundancy check
CRC-16 sixteen bit CRC.