ISO/IEC 18000-6:2004/Amd 1:2006

Information technology - Radio frequency identification for item management - Part 6: Parameters for air interface communications at 860 MHz to 960 MHz - Amendment 1: Extension with Type C and update of Types A and B

Technologies de l'information — Identification par radiofréquence (RFID) pour la gestion d'objets — Partie 6: Paramètres de communications d'une interface d'air entre 860 MHz et 960 MHz — Amendement 1: Extension avec Type C et mise à jour des Types A et B

General Information

• Status: Withdrawn
• Publication Date: 18-Jun-2006
• Withdrawal Date: 18-Jun-2006
• ICS: 35.040 - Information coding
• ICS: 35.040.50 - Automatic identification and data capture techniques
• Technical Committee: ISO/IEC JTC 1/SC 31 - Automatic identification and data capture techniques
• Drafting Committee: ISO/IEC JTC 1/SC 31/WG 4 - Radio communications
• Current Stage: 9599 - Withdrawal of International Standard
• Start Date: 24-Nov-2010
• Completion Date: 30-Oct-2025

Relations

• Amends: ISO/IEC 18000-6:2004 - Information technology - Radio frequency identification for item management - Part 6: Parameters for air interface communications at 860 MHz to 960 MHz
• Effective Date: 06-Jun-2022
• Revised: ISO/IEC 18000-6:2010 - Information technology - Radio frequency identification for item management - Part 6: Parameters for air interface communications at 860 MHz to 960 MHz
• Effective Date: 15-Apr-2008
• Child: ISO/IEC 18000-6:2004 - Information technology - Radio frequency identification for item management - Part 6: Parameters for air interface communications at 860 MHz to 960 MHz
• Effective Date: 15-Apr-2008

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 18000-6
First edition
2004-08-15
AMENDMENT 1
2006-06-15
Information technology — Radio
frequency identification for item
management —
Part 6:
Parameters for air interface
communications at 860 MHz to 960 MHz
AMENDMENT 1: Extension with Type C and
update of Types A and B
Technologies de l'information — Identification par radiofréquence
(RFID) pour la gestion d'objets —
Partie 6: Paramètres de communications d'une interface d'air entre
860 MHz et 960 MHz
AMENDEMENT 1: Extension avec Type C et mise à jour
des Types A et B
Reference number
ISO/IEC 18000-6:2004/Amd.1:2006(E)
©
ISO/IEC 2006
ISO/IEC 18000-6:2004/Amd.1:2006(E)
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All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
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ii © ISO/IEC 2006 – All rights reserved

ISO/IEC 18000-6:2004/Amd.1:2006(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees
established by the respective organization to deal with particular fields of technical activity. ISO and IEC
technical committees collaborate in fields of mutual interest. Other international organizations, governmental
and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information
technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
an International Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to ISO/IEC 18000-6:2004 was prepared by Joint Technical Committee ISO/IEC JTC 1,
Information technology, Subcommittee SC 31, Automatic identification and data capture techniques.
Amendment 1 to ISO/IEC 18000-6:2004 covers the extension of ISO/IEC 18000-6 to Type C, to accommodate
the latest development of passive RFID technology in the UHF frequency band from 860 MHz to 960 MHz.
Furthermore, it covers changes in order to achieve an improved collision arbitration and a more robust
protocol for Type A.
© ISO/IEC 2006 – All rights reserved iii

ISO/IEC 18000-6:2004/Amd.1:2006(E)
Information technology — Radio frequency identification for
item management —
Part 6:
Parameters for air interface communications at 860 MHz to
960 MHz
AMENDMENT 1: Extension with Type C and update of
Types A and B
Page vii, Introduction
Replace the paragraph after the bulleted list with the following paragraphs:
This International Standard specifies the physical and logical requirements for a passive-backscatter,
interrogator-talks-first (ITF), radio frequency identification (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 this RF signal. Tags are
passive, meaning that they receive all of their operating energy from the interrogator’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 backscattering an information
signal to the interrogator. The system is ITF, meaning that a tag modulates its antenna reflection coefficient
with an information signal only 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 listen, or vice versa.
© ISO/IEC 2006 – All rights reserved 1

ISO/IEC 18000-6:2004/Amd.1:2006(E)
Page vii, Introduction
Add the following to the table of patent holders:
Affected clause(s) in this part of
Contact details Patent number
ISO/IEC 18000
Alien Technology Corporation 6,933,848 USA, 10/141,489 USA, 9.3.2.1.1.1, 9.3.2.1.2.1, 9.3.2.4.7,
ATTN: Dr. John Stephen Smith  11/029,445 USA, 2003/0019929 USA, 9.3.2.10.3.4, Fig. Amd.1-22,
18200 Butterfield Blvd 10/160,458 USA, 11/132,085 USA, Fig. Amd.1-26, 9.3.2.1.1.1, 9.3.2.1.2.1,
Morgan Hill CA 95037 11/153,030 USA, (divisional of 9.3.2.4.7, 9.3.2.10.3.4, Fig. Amd.1-22,
USA 6,942,155 US), Not yet assigned, Fig. Amd.1-26, 9.3.2.7, 9.3.2.10.1.1,
Tel: [phone] (continuation of 11/153,030 USA), 9.3.2.10.2.4, Table Amd.1-28, 9.3.2.7,
Fax: [phone] USA, 10/982,557 USA, 9.3.2.10.1.1, 9.3.2.10.2.4,
E-mail: [e-mail] Not yet assigned, (continuation of Table Amd.1-28, 9.3.2.1.1.1,
10/982,557 USA), Not yet assigned, 9.3.2.1.2.1, 9.3.2.2, 9.3.2.3, 9.3.2.4.7,
(continuation of 10/982,557 USA), 9.3.2.10.3.4, Table Amd.1-16,
US04/036991 PCT, WO2005048180, Fig. Amd.1-22, Fig. Amd.1-26,
2003/0137403 USA, 10/267,924 USA, 9.3.2.1.1.1, 9.3.2.1.2.1, 9.3.2.2, 9.3.2.3,
WO03032240, 2820082.9 China, 9.3.2.4.7, 9.3.2.10.3.4,
1636039A China, 2801064.3 EU, 2003- Table Amd.1-16, Fig. Amd.1-22,
535135 Japan, 091123291 Taiwan, Fig. Amd.1-26, 9.3.2.2, 9.3.2.3, 9.3.2.4,
60/681,656 USA, 10/915,725 USA, 9.3.2.4.1, 9.3.2.4.2, 9.3.2.4.8, 9.3.2.5,
US04/025883 PCT, 10/140,557 US, 9.3.2.8, 9.3.2.9, 9.3.2.10, 9.3.2.10.1.1,
9.3.2.10.2.1, 9.3.2.10.2.2, 9.3.2.10.2.3,
9.3.2.10.2.4, Table Amd.1-18,
Table Amd.1-19, Table Amd.1-20,
Fig. Amd.1-21, Fig. Amd.1-22,
9.3.2.10, Table Amd.1-18, 9.3.2.9,
Fig. Amd.1-22, 9.3.2.2, 9.3.2.3, 9.3.2.4,
9.3.2.4.1, 9.3.2.4.2, 9.3.2.4.8, 9.3.2.5,
9.3.2.8, 9.3.2.9, 9.3.2.10.1.1,
9.3.2.10.2.1, 9.3.2.10.2.2, 9.3.2.10.2.3,
9.3.2.10.2.4, Table Amd.1-18,
Table Amd.1-19, Table Amd.1-20,
Fig. Amd.1-21, Fig. Amd.1-22,
9.3.2.1.1.1, 9.3.2.1.2.1, 9.3.2.4.7,
9.3.2.10.1.1, 9.3.2.10.2.4, 9.3.2.10.3.4,
9.3.2.10.3.5, Table Amd.1-39,
Fig. Amd.1-22, Fig. Amd.1-26,
Fig. Amd.1-27, 9.3.2.1.1.1, 9.3.2.1.2.1,
9.3.2.4.7, 9.3.2.10.1.1, 9.3.2.10.2.4,
9.3.2.10.3.4, 9.3.2.10.3.5,
Table Amd.1-39, Fig. Amd.1-22,
Fig. Amd.1-26, Fig. Amd.1-27,
9.3.2.1.1.1, 9.3.2.1.2.1, 9.3.2.4.7,
9.3.2.10.1.1, 9.3.2.10.2.4, 9.3.2.10.3.4,
9.3.2.10.3.5, Table Amd.1-39,
Fig. Amd.1-22, Fig. Amd.1-26,
Fig. Amd.1-27, 9.3.2.1.1.1, 9.3.2.1.2.1,
9.3.2.4.7, 9.3.2.10.1.1, 9.3.2.10.2.4,
9.3.2.10.3.4, 9.3.2.10.3.5,
Table Amd.1-39, Fig. Amd.1-22,
Fig. Amd.1-26, Fig. Amd.1-27,
9.3.2.10.1.1, 9.3.2.10.2.4, 9.3.1.3.2.3,
9.3.1.3.3, Table Amd.1-12,
Fig. Amd.1-15, Fig. Amd.1-16, 9.3.2.2,
9.3.2.3, 9.3.2.10, 9.3.2.10.1.1,
Table Amd.1-18, Table Amd.1-19,
Table Amd.1-20, Fig. Amd.1-21,
9.3.2.2, 9.3.2.3, 9.3.2.10, 9.3.2.10.1.1,
Table Amd.1-18, Table Amd.1-19,
Table Amd.1-20, Fig. Amd.1-21,
9.3.2.1
2 © ISO/IEC 2006 – All rights reserved

ISO/IEC 18000-6:2004/Amd.1:2006(E)
Atmel Germany GmbH 10050878.2-31 DE, 09/929703 US, 6.3.1.2.2, 6.3.1.2.3, 6.3.1.2.5, 6.3.1.2.8,
ATTN: Dr. Bertram Koch 1508/01 CH, 0113094 FR, 10138217.0 6.3.1.5, 6.3.1.3.1, 6.3.1.3, 6.3.2.10.3,
Patent Division IPM DE, 10/353298 US, 02767283.1-2210 6.3.2.2, 6.3.2.3
Theresienstr. 2 FR, 02767283.1-2210 FI, 50202435.6-
74072 Heilbronn
08 DE, 10335009.8 DE, 10/896670 Us,
Germany 04017298.3-1237 EP, 200410054468.5
Tel: [phone] CN, 102004019309.6 DE, 05007835.1-
Fax: [phone] 2210 EP, 11/104435 US,
Email: [e-mail] 102004014563.6 DE, 11/087871 us,
200510059501.8 CN, 10158442.3-09
DE, 10256099.4 DE, 02026665.6.1248
EP, 10/308248 US, 10301451.9 DE,
10/753859 US, 04000202.41248 EP,
2004-4143 JP, 200410002008.8 CN,
10325399.8 DE, 0 012309 3-241 E,
10/855866 US, 2004-157635 JP,
10357665.7 DE, 10/753849 US,
04000203.2-2207 EP, 200410002047.8
CN, 2004-5689 JP, 10356259.1-35 DE,
11/002852 US, 200410098306.1 CN,
102005032590.4- 35 DE,
PCT/EP2005/007 496 WO,
102004007106.3 DE, 11/058056 US,
200510008328.9 CN
BTG International Ltd CHINA 98117396.9; EUROPE ???
ATTN: Mr Mathew Frankel 98306849.5; JAPAN 241748.98;
Senior Legal Advisor UNITED STATES OF AMERICA
10 Fleet Place 09/138560; SOUTH AFRICA 987635 ;
Limeburner Lane CHINA 98117442.6; CHINA
London EC4M 7SB 200410045765.3; EUROPE
UK 98306943.6; JAPAN 10-243364;
Tel: [phone] UNITED STATES OF AMERICA
Fax: [phone]/143711; SOUTH AFRICA 987838;
Website: www.btgplc.com CHINA 98119594.6; JAPAN
Email: [e-mail] 272945/98; UNITED STATES OF
AMERICA 09/160354; SOUTH AFRICA
988956; CHINA 99111121.4; EUROPE
99304836.2; JAPAN 171775/1999;
UNITED STATES OF AMERICA
09/334151; UNITED STATES OF
AMERICA 10/827814; SOUTH AFRICA
985286; SOUTH AFRICA 994046;
AUSTRIA 99308924.2; BELGIUM
99308924.2; SWITZERLAND
99308924.2; CHINA 99122449.3;
GERMANY 99308924.2; EUROPE
99308924.2; SPAIN 99308924.2;
FRANCE 99308924.2; ITALY
99308924.2; JAPAN 318426/1999;
NETHERLANDS 99308924.2; UNITED
STATES OF AMERICA 435467;
CHINA 00104540.7; EUROPE
00300753.1; JAPAN 2000-023891;
UNITED STATES OF AMERICA
09/495456; SOUTH AFRICA
2000/0668; CHINA 00121458.6;
EUROPE 00306298.1; JAPAN 2000-
222353; UNITED STATES OF
AMERICA 09/624006; SOUTH AFRICA
2000/3699; EUROPE 01304980.4;
JAPAN 2001-177175; UNITED
STATES OF AMERICA 09/877438;
SOUTH AFRICA 2001/4484; CHINA
01115964.2; EUROPE 01305116.4;
JAPAN 2001-177567; UNITED
STATES OF AMERICA 09/878403;
© ISO/IEC 2006 – All rights reserved 3

ISO/IEC 18000-6:2004/Amd.1:2006(E)
SOUTH AFRICA 2001/4921; CHINA
01129277.6; EUROPE 01305265.9;
JAPAN 184904/2001; UNITED
STATES OF AMERICA 09/881741;
SOUTH AFRICA 2001/4922; CHINA
01145439.3; EUROPE 01310061.5;
JAPAN 366552/2001; UNITED
STATES OF AMERICA 09/996937;
SOUTH AFRICA 2001/9960; EUROPE
02782413.5; SOUTH AFRICA
2004/4464; CHINA ; EUROPE ;
JAPAN ; UNITED STATES OF
AMERICA ; SOUTH AFRICA
2005/07600
CHINA 1123139; UNITED STATES OF
AMERICA 6054925; SOUTH AFRICA
987635; UNITED STATES OF
AMERICA 6367697; SOUTH AFRICA
987838; CHINA ZL981195994.6;
UNITED STATES OF AMERICA
6198381; SOUTH AFRICA 988956;
CHINA 99111121.4; UNITED STATES
OF AMERICA 6724895; SOUTH
AFRICA 994046; AUSTRIA 1001366;
BELGIUM 1001366; SWITZERLAND
1001366; GERMANY 69923645.2;
EUROPE 1001366; SPAIN 1001366;
FRANCE 1001366; ITALY 1001366;
NETHERLANDS 1001366; UNITED
STATES OF AMERICA 6480143;
UNITED STATES OF AMERICA
6346922; SOUTH AFRICA 2000/0668;
UNITED STATES OF AMERICA
6388630; SOUTH AFRICA 2000/3699;
UNITED STATES OF AMERICA
6867687 ; SOUTH AFRICA 2001/4484;
SOUTH AFRICA 2001/4921; UNITED
STATES OF AMERICA 6891466 ;
SOUTH AFRICA 2001/4922; CHINA
ZL01145439.3; UNITED STATES OF
AMERICA 6870460; SOUTH AFRICA
2001/9960
Impinj, Inc. [USA S/N 10 / 915,930]; [PCT / US 9.3.1.2.3; Figure Amd. 1-4; 9.3.1.2.8;
ATTN: Todd E. Humes, CTO 2005/ 028180]; [USA S/N 10 / Figure Amd. 1-7; Annex J; 9.3.1.3 and
ATTN: Gregory T. Kavounas Sr. P.C. 890,662]; [EP S/N 5103959.2]; subsections (especially 9.3.1.3.2 and
Impinj Patent Licensing Department [USA S/N 10 / 824,049]; [PCT / US 9.3.1.3.3); 9.3.2.10.2.1; 9.3.1.2.8;
701 N. 34th Street, Suite 300 2004/ 037668]; [USA S/N 10 / Figure Amd. 1-7; 9.3.1.3.2.2;
Seattle, WA 98103 967,996]; [USA S/N 10 / 985,518]; Figure Amd. 1-14; Annex J; 9.3.1.3 and
USA [PCT / US 2004/ 037387]; [USA subsections (especially 9.3.1.3.2 and
Tel: [phone] S/N 11 / 031,459]; [USA S/N 11 / 9.3.1.3.3); 9.3.2.10.2.1; 9.3.1.2.8;
Fax: [phone],471]; [USA S/N 11 / 033,028] Figure Amd. 1-7; Annex D; Table D.1;
Email: [e-mail] / 9.3.2.1; 9.3.2.10.1.1; Table Amd.1-19;
[e-mail] 9.3.2.10.3.2; Table Amd. 1-32;
9.3.2.10.3.3; Table Amd. 1-34;
9.3.2.10.3.7; Table Amd. 1-44;
9.3.2.10.3.8; Table Amd. 1-46;
9.3.2.10; Table Amd. 1-18; plus all
uses of the header “Code” specified in
Table Amd. 1-18 throughout the
specification; 2.3, 4.1.5 (“cover-
coding”); 9.3.2.5; 9.3.2.9; 9.3.2.10.3.3;
Table Amd. 1-34; 9.3.2.10.3.4;
Table Amd. 1-36; Figure Amd.1-26;
9.3.2.10.3.6; Table Amd. 1-42;
Figure Amd. 1-28
4 © ISO/IEC 2006 – All rights reserved

ISO/IEC 18000-6:2004/Amd.1:2006(E)
Type C
Intermec IP Corp 5,673,037 USA; 69530547.6 DE;
0702323 EP; EP0702323 FR; 9.1.1 Physical layer
ATTN: Ronald D. Payne
Table 3:
Legal Department EP0702323 GB; 204748 KR; 318306
TW; 6,172,596 USA; 6,400,274 USA; Tag:7e Subcarrier Frequency
6001 36th Avenue West
Tag:7g Subcarrier Modulation
Everett, WA 98203 6,404,325 USA; 4,786,907 USA;
1272787 CA; 0254954 EP; 1435/1996 Tag:7h Duty Cycle
Tel: [phone]
Tag:8 Data Coding
Fax: [phone] HK; 2644496 JP; 115902 KR
Tag:9 Bit Rate
Email: [e-mail]
4,739,328 USA; 5,030,807 USA;
9.3.1.3 Tag-to-interrogator (T=>R)
629153 AU; 2033868 CA; 0438250 EP;
communications
0438250 GB; 5,777,561 USA;
9.3.1.3.2 Data encoding
5,828,693 USA; 97916151.0 EP;
9.3.1.3.2.3 Miller-modulated
5,850,181 USA; 5,912,632 USA;
subcarrier
5,995,019 USA; 6,400,274 USA;
Figure Amd.1-16 — Subcarrier
6,429,775 USA; 6,288,629 USA;
sequences
6,812,841 USA; US03/00755 PC;
9.3.1.3.2.4 Miller subcarrier
03702060.9 EP; 20050179521 USA;
preamble
20040189443 USA ; 10/662950 USA;
9.3.1.3.3  Tag supported Tari values
and backscatter link rates
Table Amd.1-11 — Tag-to-interrogator
link frequencies
Annex I Dense- and multiple-
interrogator channelised signaling
Type A
7.3.1 Tag memory organization
7.4.7 Command codes and CRC
7.8.9 Write_single_block
7.8.10 Write_multiple_blocks
7.8.11 Lock_blocks
7.8.12 Write_AFI
7.8.13 Lock_AFI
7.8.14 Write_DSFID command
7.8.15 Lock_DSFID
Type B
8.2.4.2 Detailed Command Processing
8.2.7.6 Command codes and format
8.2.7.9.11 WRITE
8.2.7.9.12 WRITE4BYTE
8.2.7.9.13 LOCK
8.2.7.9.15 WRITE_MULTIPLE
8.2.7.9.16 WRITE4BYTE_MULTIPLE
Annex B Memory mapping for Type B
Type C
9.1.2 Tag-identification layer
Table 4 — Tag inventory and access
parameters
P:5 Write Size
P:7 Write Transaction Time
9.3.2.1.1 Reserved Memory
9.3.2.1.2 UII Memory
9.3.2.1.3 TID memory
9.3.2.1.4 User memory
9.3.2.1.1.1 Kill password
9.3.2.1.1.2 Access password
9.3.2.1.2.2 Protocol-control (PC) bits
9.3.2.1.2.1 CRC-16
9.3.2.1.2.3 UII for EPCglobal™
applications
9.3.2.1.2.4 UII for non-EPCglobal™
applications
9.3.2.9 Accessing individual tags
Table Amd.1-17 — Access commands
and tag states in which they are
permitted
© ISO/IEC 2006 – All rights reserved 5

ISO/IEC 18000-6:2004/Amd.1:2006(E)
9.3.2.10.3.3 Write (mandatory)
9.3.2.10.3.4 Kill (mandatory)
9.3.2.10.3.5 Lock (mandatory)
9.3.2.10.3.7 BlockWrite (optional)
9.3.2.10.3.8 BlockErase (optional)
F.10  Command response: Write
F.11  Command response: Kill
F.12  Command response: Lock
F.14  Command response: BlockWrite
F.15  Command response: BlockErase

Type C
9.1.1 Physical layer
Table 3 — Tag-to-interrogator (T=>R)
communications:
Tag:7e Subcarrier Frequency
Tag:7g Subcarrier Modulation
Tag:7h Duty Cycle
Tag:8 Data Coding
Tag:9 Bit Rate
9.3.1.3 Tag-to-interrogator (T=>R)
communications
9.3.1.3.2 Data encoding
9.3.1.3.2.3 Miller-modulated
subcarrier
Figure Amd.1-16 — Subcarrier
sequences
9.3.1.3.2.4 Miller subcarrier
preamble
9.3.1.3.3 Tag supported Tari values
and backscatter link rates
Table Amd.1-11 — Tag-to-interrogator
link frequencies
Annex I Dense- and multiple-
interrogator channelised signaling
Types A, B, C
Table 2 — Interrogator-to-tag (R=>T)
communications:
Int:1d Frequency Hop Rate
(frequency-hopping [FHSS] systems)
Int:1e Frequency Hop
Sequence (frequency-hopping [FHSS]
systems)
Table 3 — Tag-to-interrogator (T=>R)
communications:
Tag:1d Frequency Hop Rate
(frequency-hopping [FHSS] systems)
Tag:1e Frequency Hop
Sequence (frequency-hopping [FHSS]
systems)
Types A, B
6.4 Frequency hopping carrier rise
and fall times
Type C
9.3.1.2.9 Frequency-hopping spread-
spectrum waveform
9.3.1.2.10 Frequency-hopping
spread-spectrum channelisation
Annex I Dense- and multiple-
interrogator channelised signaling
Bibliography:
ETSI EN 300 220
ETSI EN 302 208-1
6 © ISO/IEC 2006 – All rights reserved

ISO/IEC 18000-6:2004/Amd.1:2006(E)
ETSI EN 302 208-2
US Code of Federal Regulations
(CFR) Title 47, Chapter I, Part 15
Types A, B, C
Table 2 — Interrogator-to-tag (R=>T)
communications:
Int:1d Frequency Hop Rate
(frequency-hopping [FHSS] systems)
Int:1e Frequency Hop
Sequence (frequency-hopping [FHSS]
systems)
Table 3 — Tag-to-interrogator (T=>R)
communications:
Tag:1d Frequency Hop Rate
(frequency-hopping [FHSS] systems)
Tag:1e Frequency Hop
Sequence (frequency-hopping [FHSS]
systems)
Types A, B
6.4 Frequency hopping carrier rise
and fall times
Type C
9.3.1.2.9 Frequency-hopping spread-
spectrum waveform
9.3.1.2.10 Frequency-hopping
spread-spectrum channelisation
Annex I Dense- and multiple-
interrogator channelised signaling
Bibliography:
ETSI EN 300 220
ETSI EN 302 208-1
ETSI EN 302 208-2
US Code of Federal Regulations
(CFR) Title 47, Chapter I, Part 15
Type A, B
6.5.5 Message Format
6.5.6 Return preamble
Type C
9.3.1.3.3 Tag supported Tari values
and backscatter link rates
Type C
9.1.1 Physical layer
Table 3:
Tag:7e Subcarrier Frequency
Tag:7g Subcarrier Modulation
Tag:7h Duty Cycle
Tag:8 Data Coding
Tag:9 Bit Rate
9.3.1.3 Tag-to-interrogator (T=>R)
communications
9.3.1.3.2 Data encoding
9.3.1.3.2.3 Miller-modulated
subcarrier
Figure Amd.1-16 — Subcarrier
sequences
9.3.1.3.2.4 Miller subcarrier
preamble
9.3.1.3.3 Tag supported Tari values
and backscatter link rates
Table Amd.1-11 — Tag-to-interrogator
link frequencies
Annex I Dense- and multiple-
© ISO/IEC 2006 – All rights reserved 7

ISO/IEC 18000-6:2004/Amd.1:2006(E)
interrogator channelised signaling
CLAIMS 11-et seq
Types A, B, C
Table 2:
Int:1d Frequency Hop Rate
(frequency-hopping [FHSS] systems)
Int:1e Frequency Hop
Sequence (frequency-hopping [FHSS]
systems)
Table 3:
Tag:1d Frequency Hop Rate
(frequency-hopping [FHSS] systems)
Tag:1e Frequency Hop
Sequence (frequency-hopping [FHSS]
systems)
Types A, B
6.4 Frequency hopping carrier rise
and fall times
Type C
9.3.1.2.9 Frequency-hopping spread-
spectrum waveform
9.3.1.2.10 Frequency-hopping
spread-spectrum channelisation
Annex I Dense- and multiple-
interrogator channelised signaling
Bibliography:
ETSI EN 300 220
ETSI EN 302 208-1
ETSI EN 302 208-2
US Code of Federal Regulations
(CFR) Title 47, Chapter I, Part 15
Type A
7.8.9 Write single block
7.8.10 Write multiple blocks
7.8.11 Lock single block
7.8.12 Write AFI
7.8.13 Lock AFI
7.8.14 Write DSFID command
7.8.15 Lock DSFID
Type B
8.2.1.3.3 WRITE_OK
8.2.7.9.11 WRITE
8.2.7.9.12 WRITE4BYTE
8.2.7.9.13 LOCK
8.2.7.9.14 QUERY_LOCK
8.2.7.9.15 WRITE_MULTIPLE
8.2.7.9.16 WRITE4BYTE_MULTIPLE
Type C
9.3.2.10.3.3 Write (mandatory)
9.3.2.10.3.4 Kill (mandatory)
9.3.2.10.3.5 Lock (mandatory)
9.3.2.10.3.7 BlockWrite (optional)
9.3.2.10.3.8 BlockErase (optional)
Annex E  State-transition tables
Type A
Tag state storage
Type B
8.2.1.3.2 Data exchange status bit
(DE_SB)
8 © ISO/IEC 2006 – All rights reserved

ISO/IEC 18000-6:2004/Amd.1:2006(E)
Type C
persistent memory or persistent flag
9.3.2.2 Sessions and inventoried
flags
9.3.2.3 Selected flag
9.3.2.7 Selecting tag populations
9.3.2.8 Inventorying tag populations
9.3.2.10.1.1  Select (mandatory)
9.3.2.10.2.1  Query (mandatory)
9.3.2.10.2.2  QueryAdjust (mandatory)
9.3.2.10.2.3  QueryRep (mandatory)
Annex E State-transition tables
Annex F Command-Response Tables
Magellan Technology Pty Limited  US10/204159 USA , AU3711301 6, 7, 8, 9
ATTN: Ms E. J. Angus Australia , WO0165712 International
Company Secretary PCT, EP1266458 Europe ,
65 Johnston St 2003526148 Japan
ANNANDALE NSW 2038
Australia
Tel: [phone]
Fax: [phone]
E-mail : [e-mail]
OMRON Corporation 2949728/ Japan 6.3.1.3.3
ATTN: Atsuhsi Hisano
Business Development Group
Planning Division Business
Management Department
Gate City Ohsaki
West Tower 14F, 1-11-1, Ohsaki,
Shinagawa-ku, Tokyo, 141-0032
Japan
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Koninklijke Philips Electronics N.V. AT 401 127/ AT;EP 0 669 591 / BE, 2.5.1
ATTN: Harald Röggla CH, De, DK, ES, FR, GB, IT, LI, NL,
Triester Strasse 64 SE;EP 1 038 257 /AT, DE, ES, FR, GB,
1101 Vienna IT;IN /PCT/00/00034 /
Austria IN;US10/382262;JP00-561579 / JP;
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Symbol Technologies, Inc. 6,784,813 (USA); 10/926,269 (USA); Type C
ATTN: Aaron Bernstein, VP of IP, 10/932,279 (USA); 761843 (AU);
Legal Department 2,310,623 (CA); 98812462.9 (CN);
One Symbol Plaza, MS A6 1031120 (DE); 1031120 (EP); 1320062
Holtsville, NY 11742 (EP); 1031120 (FR); 1031120 (GB);
USA 1032468 (HK); 136,220 (IL); 1031120
Tel: [phone] (IT); 2000-521687 (JP); 10/688,535
Fax [phone] (USA); 2003282941 (AU); TBA (CN);
E-mail [e-mail] TBA (EP); TBA (JP); TBA (KR);
10/725,010 (USA); 10/073,000 (USA);
10/072,885 (USA); 10/693,687 (USA);
2003286702 (AU); TBA (CA); TBA
(CN); 03777912.1 (EP); TBA (JP); 10-
2005-7007116 (KR); TBA (SG);
10/927,775 (USA); US04/027999(WO);
2,503,407 (CA); TBA (EP); TBA (JP);
0480001172.5 (CN); 1020057007371
(KR); 2004269728 (AU)
© ISO/IEC 2006 – All rights reserved 9

ISO/IEC 18000-6:2004/Amd.1:2006(E)
TAGSYS, S.A. US 6,641,036; EP 1232471; ???
ATTN: Alastair McArthur, CTO WO 02054365; WO 0141043;
180 Chemin de Saint Lambert EP 0953181; US 6,538,564
13821 La Penne sur Huveaune
France
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
Texas Instruments Incorporated NONE Not applicable
ATTN: Mrs. Scharlene Franks
Contract Manager, RFID Business
Group
6550 Chase Oaks Boulevard, MS
Plano, Texas 75023
USA
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Zebra Technologies Corporation 92/10006 AUSTRALIA; BW/A/97/00142 ???
ATTN: Eric McAlpine BOTSWANA; 2058692 CANADA;
IP Counsel Legal Dept. 02017523.8 EPC; 95112753.9 EPC
333 Corporate Woods Parkway (AT, BE, CH, DE, DK, ES, FR, GB, GR,
Vernon Hills, IL 60061 IT, LU, NL, PT, SE); 92300041.8 EPC
USA (AT, BE, CH, DE, DK, ES, FR, GB, GR,
Phone: [phone] IT, LU, NL, PT, SE); 91/346821
Fax: [phone] JAPAN; 9609578-1 SINGAPORE;
E-mail: [e-mail] 92/0039 SOUTH AFRICA; 08/976949
USA; 07/816893 USA; 08/976948 USA;
326618 ARGENTINA; 93/50781
AUSTRALIA; BW/A/97/00141
BOTSWANA; PI9304761-4 BRAZIL;
2103288 CANADA; 93121410 CHINA;
01117486.9 EPC; 97104997.8 EPC
(AT, BE, CH, DE, DK, ES, FR, GB, GR,
IE, IT, NL, PT, SE); 97104998.6 EPC
(AT, BE, CH, DK, DE, ES, FR, GB, GR,
IE, IT, NL, PT, SE); 93309232.2 EPC
(AT, BE, CH, ES, FR, GB, GR, IE, IT,
NL, PT, SE); 0598624UKREG
GUERNSEY; 98109976.2 HONG
KONG; 93/01312 INDIA; 107636
ISRAEL; 47219/03 JAPAN; 93/289591
JAPAN; 0598624UKREG JERSEY;
93/02408 MALAYSIA; 9307214
MEXICO; 250219 NEW ZEALAND;
314270 NEW ZEALAND; 314269 NEW
ZEALAND; 19934177 NORWAY;
19993092 NORWAY; 19993091
NORWAY; 93051222 RUSSIAN
FEDERATION; 9609092-3
SINGAPORE; 93/8624 SOUTH
AFRICA; 93/024833 SOUTH KOREA;
82109793 TAIWAN; 93003717
UKRAINE; 08/154329 USA; 08/580913
USA; 95/16530 AUSTRALIA; 93/44940
AUSTRALIA; BW/A/97/00144
BOTSWANA; 2104829 CANADA;
93118806 CHINA; 93306790.2 EPC
(AT, BE, CH, DE, DK, ES, FR, GB, GR,
IE, IT, LU, MN, NL, PT, SE); 93/00956
INDIA; 108621 ISRAEL; 93/211454
JAPAN; 93049090 RUSSIAN
FEDERATION; 9608519-6
10 © ISO/IEC 2006 – All rights reserved

ISO/IEC 18000-6:2004/Amd.1:2006(E)
SINGAPORE; 93/6267 SOUTH
AFRICA; 94/03632 SOUTH KOREA;
83101248 TAIWAN; 93003224
UKRAINE; 08/665363 USA; 08/111430
USA; 99/10433 AUSTRALIA; 2310241
CANADA; 02021446.6 EPC;
05017862.3 EPC; 98952886.4 EPC
(AT, BE, CH, CY, DE, DK, ES, FI, FR,
GB, GR, IE, IT, LU, MN, NL, PT, SE);
2000-521391 JAPAN; 504144 NEW
ZEALAND; 98/10356 SOUTH AFRICA;
09/570951 USA; 98/74401
AUSTRALIA; PI9808714-2 BRAZIL;
2289207 CANADA; 98805116.8
CHINA; 04012409.1 EPC; 98921613.0
EPC (AT, BE, CH, DE, DK, ES, FI, FR,
GB, GR, IE, IT, NL, SE); 02024117.0
EPC (BE, DE, DK, ES, FI, FR, GB, IE,
IT, NL, SE); 132297 ISRAEL;
98/548931 JAPAN; 9910381 MEXICO;
337966 NEW ZEALAND; 99126440
RUSSIAN FEDERATION; 9904942-1
SINGAPORE; 98/10257 SOUTH
AFRICA; 1999-7010475 SOUTH
KOREA; 10/635683 USA; 09/415234
USA; PCT/GB04/004505 PCT;
PCT/GB05/000110 PCT; 0400968.4
UNITED KINGDOM;
PCT/GB05/000345 PCT; 0402667.0
UNITED KINGDOM; 2,148,145
CANADA; 08/430825 USA
BOTSWANA BW/P03/00031;
MALAYSIA MY-109809-A;
BOTSWANA BW/P/03/00033; TAIWAN
NI-84612; TAIWAN NI-67003; SOUTH
AFRICA 98/10356; SOUTH AFRICA
98/10257; SOUTH AFRICA 93/8624;
SOUTH AFRICA 93/6267; SOUTH
AFRICA 92/0039; JERSEY 622;
UKRAINE 37182; UKRAINE 44215;
SINGAPORE 48262; SINGAPORE
48423; SINGAPORE 55818;
SINGAPORE 68358; ISRAEL 107636;
ISRAEL 108621; ISRAEL 132297;
MEXICO 186161; INDIA 187341;
INDIA 188258; NEW ZEALAND
250219; ARGENTINA 250637;
NORWAY 307590; SOUTH KOREA
309651; NORWAY 310261; NORWAY
310262; NEW ZEALAND 314269;
NEW ZEALAND 314270; SOUTH
KOREA 316754; NEW ZEALAND
337966; EPC (AT, BE, CH, DE, DK,
ES, FR, GB, GR, IT, LU, NL, PT, SE)
0494114; NEW ZEALAND 504144;
EPC (AT, BE, CH, DE, DK, ES, FR,
GB, GR, IE, IT, LU, MN, NL, PT, SE)
0585132; EPC (AT, BE, CH, ES, FR,
GB, GR, IE, IT, NL, PT, SE) 0598624;
GUERNSEY 0598624UKREG;
AUSTRALIA 656088; AUSTRALIA
658857; AUSTRALIA 670402;
AUSTRALIA 676853; EPC (AT, BE,
CH, DE, DK, ES, FR, GB, GR, IT, LU,
NL, PT, SE) 0685825; AUSTRALIA
© ISO/IEC 2006 – All rights reserved 11

ISO/IEC 18000-6:2004/Amd.1:2006(E)
745638; AUSTRALIA 764975; EPC
(AT, BE, CH, DE, DK, ES, FR, GB, GR,
IE, IT, NL, PT, SE) 0789253; EPC (AT,
BE, CH, DK, DE, ES, FR, GB, GR, IE,
IT, NL, PT, SE) 0789254; EPC (AT,
BE, CH, DE, DK, ES, FI, FR, GB, GR,
IE, IT, NL, SE) 0983569; HONG KONG
1009295; EPC (AT, BE, CH, CY, DE,
DK, ES, FI, FR, GB, GR, IE, IT, LU,
MN, NL, PT, SE) 1031046; EPC (BE,
DE, DK, ES, FI, FR, GB, IE, IT, NL, SE)
1280092; EPC 1291671; CANADA
2058692; CANADA 2103288; CANADA
2104829; RUSSIAN FEDERATION
2126165; RUSSIAN FEDERATION
2156540; RUSSIAN FEDERATION
2238585; JAPAN 3100716; JAPAN
3290003; USA 5519381; USA
5537105; USA 5557280; USA
5680459; USA 5699066; USA
5726630; USA 5966083; USA
5995017; USA 6661336; USA
6784787; BRAZIL 9304761-4; CHINA
93118806.7; CHINA 93121410.6
12 © ISO/IEC 2006 – All rights reserved

ISO/IEC 18000-6:2004/Amd.1:2006(E)
Page 1, clause 1
Replace paragraph 2 with the following paragraphs:
This part of ISO/IEC 18000 contains one mode with three types. All three types are ITF. 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. Type C uses Pulse-
Interval Encoding (PIE) in the forward link and a random slotted collision-arbitration algorithm. The detailed
technical differences between the three types are shown in the associated parameter tables.
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, and
⎯ the collision arbitration scheme used to identify a specific tag in a multiple-tag environment.
Page 1, clause 2
Replace the whole clause with the following clause:
2 Conformance
2.1 Claiming conformance
To claim conformance with this part of ISO/IEC 18000, an interrogator or tag shall comply with all relevant
clauses of this part of ISO/IEC 18000, except those marked as “optional”. The interrogator or tag shall also
operate within local radio regulations, which may further restrict operation.
Relevant conformance test methods will be provided in a future Technical Report (ISO/IEC TR 18047-6).
Conformance may also require a license from the owner of any intellectual property utilized by said device.
2.2 Interrogator conformance and obligations
To conform to this part of ISO/IEC 18000, an interrogator shall
⎯ support at least one type of A, B or C – it may optionally support two or all three;
⎯ implement the mandatory commands defined in this part of ISO/IEC 18000;
⎯ modulate/transmit and receive/demodulate a sufficient set of the electrical signals defined in the signalling
layer of this part of ISO/IEC 18000 to communicate with conformant tags; and
⎯ operate within applicable local regulations.
To conform to this part of ISO/IEC 18000, an interrogator may
⎯ implement any subset of the optional commands defined in this part of ISO/IEC 18000, and
⎯ implement any proprietary and/or custom commands in conformance with this part of ISO/IEC 18000.
© ISO/IEC 2006 – All rights reserved 13

ISO/IEC 18000-6:2004/Amd.1:2006(E)
To conform to this part of ISO/IEC 18000, the interrogator shall not
⎯ implement any command that conflicts with this part of ISO/IEC 18000, or
⎯ require using an optional, proprietary, or custom command to meet the requirements of this part of
ISO/IEC 18000.
2.3 Tag conformance and obligations
To conform to this part of ISO/IEC 18000, a tag shall
⎯ support at least one type of A, B or C – it may optionally support two or all three;
⎯ operate over the frequency range from 860 MHz to 960 MHz, inclusive;
⎯ implement the mandatory commands defined in this part of ISO/IEC 18000;
⎯ modulate a backscatter signal only after receiving the requisite command from an interrogator; and
⎯ conform to local radio regulations.
To conform to this part of ISO/IEC 18000, a tag may
⎯ implement any subset of the optional commands defined in this part of ISO/IEC 18000; and
⎯ implement any proprietary and/or custom commands as defined in clauses 7, 8 and 9 of this part of
ISO/IEC 18000.
To conform to this part of ISO/IEC 18000, a tag shall not
⎯ implement any command that conflicts with this part of ISO/IEC 18000;
⎯ require using an optional, proprietary, or custom command to meet the requirements of this part of
ISO/IEC 18000; or
⎯ modulate a backscatter signal unless commanded to do so by an interrogator using the signalling layer
defined in ISO/IEC 18000.
Page 2, clause 3
Insert the following paragraph as first paragraph:
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
Page 2, clause 3
Delete the following normative reference and associated footnote:
ISO/IEC 19762-3, Information technology — Automatic identification and data capture (AIDC) techniques —
1)
Harmonized vocabulary — Part 3: Radio frequency identification (RFID)
14 © ISO/IEC 2006 – All rights reserved

ISO/IEC 18000-6:2004/Amd.1:2006(E)
Page 2, clause 3
Insert the following normative references:
ISO/IEC 15961, Information technology — Radio frequency identification (RFID) for item management — Data
protocol: application interface
ISO/IEC 15962, Information technology — Radio frequency identification (RFID) for item management — Data
protocol: data encoding rules and logical memory functions
ISO/IEC 15963, Information technology — Radio frequency identification for item management — Unique
identification for RF tags
ISO/IEC 18000-1, Information technology — Radio frequency identification for item management — Part 1:
Reference architecture and definition of parameters to be standardized
ISO/IEC 19762 (all parts), Information technology — Automatic identification and data capture (AIDC)
techniques — Harmonized vocabulary
™
EPCglobal™ Tag Data Standards version 1.3 and above, EPCglobal
Page 2, clause 4.1
Replace the introductory paragraph with the following:
For the purposes of this document, the terms and definitions given in ISO/IEC 19762 (all parts) and the
following apply.
Page 2, clause 4.1
Insert the following terms and definitions:
4.1.3
command set
set of commands used to explore and modify a tag population
4.1.4
continuous wave
typically sinusoid at a given frequency, but more generally any interrogator waveform suitable for powering a
passive tag without amplitude and/or phase modulation of sufficient magnitude to be interpreted by a tag as
transmitted data
4.1.5
cover-coding
method by which an interrogator obscures information that it is transmitting to a tag; to cover-code data or a
password an interrogator first requests a random number from the tag, then performs a bit-wise EXOR of the
data or password with the received random number, and, finally, transmits the cover-coded (also called
ciphertext) string to the tag; the tag uncovers the data or password by performing a bit-wise EXOR of the
received cover-coded string with the original random number
4.1.6
dense-interrogator environment
operating environment (4.1.13) within which most or all of the available channels are occupied by active
interrogators
EXAMPLE 25 active interrogators operating in 25 available channels.
© ISO/IEC 2006 – All rights reserved 15

ISO/IEC 18000-6:2004/Amd.1:2006(E)
4.1.7
dense-interrogator mode
set of interrogator-to-tag and tag-to-interrogator signalling parameters used in dense-interrogator
environments
4.1.8
EPCglobal™ Application
application whose usage denotes an acceptance of EPCglobal™ standards and policies
NOTE Compare non-EPCglobal™ Application (4.1.12).
4.1.9
inventoried flag
flag that indicates whether a tag may respond to an interrogator; tags maintain a separate inventoried flag for
each of four sessions, where each flag has symmetric A and B values within any given session, and in which
interrogators typically inventory tags from A to B followed by a re-inventory of tags from B back to A (or vice
versa)
4.1.10
inventory round
period initiated by a Query command and terminated by either a subsequent Query command (which also
starts a new inventory round) or a Select command
4.1.11
multiple-interrogator environment
operating environment (4.1.13) within which a modest number of the available channels are occupied by
active interrogators
EXAMPLE 5 active interrogators operating in 25 available channels.
4.1.12
non-EPCglobal™ Application
application whose usage does not denote an acceptance of EPCglobal™ standards and policies
NOTE Compare EPCglobal™ Application (4.1.8).
4.1.13
operating environment
region within which an interrogator’s RF transmissions are attenuated by less than 90 dB
NOTE 1 In free space, the operating environment is a sphere whose radius is approximately 1000 m, with the
interrogator located at the centre.
NOTE 2 In a building or other enclosure, the size and shape of the operating environment depends on factors such as
the material properties and shape of the building, and may be less than 1000 m in certain directions and greater than
1000 m in other directions
4.1.14
operating procedure
tag-identification layer
set of functions and commands used by an interrogator to identify and modify tags
4.1.15
permalock or permalocked
memory location whose lock status is unchangeable (i.e. the memory location is permanently locked or
permanently unlocked)
16 © ISO/IEC 2006 – All rights reserved

ISO/IEC 18000-6:2004/Amd.1:2006(E)
4.1.16
persistent memory or persistent flag
memory or flag value whose state is maintained during a brief loss of tag power
4.1.17
physical layer
data coding and modulation waveforms used in interrogator-to-tag and tag-to-interrogator signalling
4.1.18
random-slotted collision arbitration
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
4.1.19
session
inventory process comprising an interrogator and an associated tag population; an interrogator chooses one
of four sessions and inventories tags within that session; the interrogator and associated tag population
operate in one and only one session for the duration of an inventory round (4.1.10); for each session, tags
maintain a corresponding inventoried flag; sessions allow tags to keep track of their inventoried status
separately for each of four possible time-interleaved inventory processes, using an independent inventoried
flag for each process
4.1.20
single-interrogator environment
operating environment (4.1.13) within which there is a single active interrogator at any given time
4.1.21
singulation
identifying an individual tag in a multiple-tag environment
4.1.22
slot
point in an inventory round at which a tag may respond, which corresponds to the value output by a tag’s slot
counter
NOTE Tags reply when their slot (i.e. the value in their slot counter) is zero.
Page 2, clause 4.2
Insert the following symbols:
BLF Backscatter-link frequency (BLF = 1/T = DR/TRcal)
pri
DR Divide ratio
FDM Frequency-division multiplexing
FT Frequency tolerance
M RF signal envelope ripple (overshoot)
h
M FHSS signal envelope ripple (overshoot)
hh
M FHSS signal envelope ripple (undershoot)
hl
M FHSS signal level during a hop
hs
M RF signal envelope ripple (undershoot)
l
M RF signal level when OFF
s
© ISO/IEC 2006 – All rights reserved 17

ISO/IEC 18000-6:2004/Amd.1:2006(E)
Q Slot-count parameter. Q is an integer in the range (0,15)
R=>T Interrogator-to-tag (reader-to-tag)
RTcal Interrogator-to-tag (reader-to-tag) calibration symbol
T=>R Tag-to-interrogator (tag-to-reader)
T Time from interrogator transmission to tag response
T Time from tag response to interrogator transmission
T Time an interrogator waits, after T , before it issues another command
3 1
T Minimum time between interrogator commands
T or T RF signal envelope fall time
f f,10-90%
T FHSS signal envelope fall time
hf
T FHSS signal envelope rise time
hr
T Time for an FHSS signal to settle to within a specified percentage of its final value
hs
T Backscatter-link pulse-repetition interval (T = 1/BLF = TRcal/DR)
pri pri
T or T RF signal envelope rise time
r r,10-90%
TRcal Tag-to-interrogator (tag-to-reader) calibration symbol
T Time for an RF signal to settle to within a specified percentage of its final value
s
UII Unique Item Identifier
x floating-point value
fp
xxxx binary notation
xxxx hexadecimal notation
h
Page 2, clause 4.2
Replace the following symbols:
Tari Reference time interval for a data-0 in interrogator-to-tag signalling
Page 3, clause 4.3
Insert the following abbreviated terms:
Ciphertext Information that is cover-coded
CW Continuous wave
dBch Decibels referenced to the integrated power in the reference channel
DSB Double sideband
DSB-ASK Double-sideband amplitude-shift keying
EPC™ Electronic product code
FCC Federal Communications Commission
Handle 16-bit tag-authentication number
ITF Interrogator-talks-first (Note: the common usage is RTF (Reader-talks-first) but the more
precise term is ITF, which is used throughout the document.)
NSI Numbering system identifier
Pivot Decision threshold differentiating an R=>T data-0 symbol from a data-1 symbol
18 © ISO/IEC 2006 – All rights reserved

ISO/IEC 18000-6:2004/Amd.1:2006(E)
Plaintext Information that is not cover-coded
ppm parts per million
PR-ASK Phase-reversal amplitude shift keying
RFU Reserved for future use
RN16 16-bit random or pseudo-random number
RNG Random or pseudo-random number generator
SSB Single sideband
SSB-ASK Single-sideband amplitude-shift keying
TID Tag-identification or tag identifier, depending on context
Word 16 bits
Page 4, before clause 5
Insert the following new subclause:
4.4 Notation
This part of ISO/IEC 18000 uses the following notational conventions for type C:
⎯ States and flags are denoted in bold. Example: ready.
⎯ Commands are denoted in italics. Variables are also denoted in italics. Where there might be confusion
between commands and variables, this specification will make an explicit statement. Example: Query.
⎯ Command parameters are underlined. Example: Pointer.
⎯ For logical negation, labels are preceded by ‘~’. Example: If flag is true, then ~flag is false.
⎯ The symbol, R=>T, refers to commands or signalling from an interrogator to a tag (reader-to-tag).
⎯ The symbol, T=>R, refers to commands or signalling from a tag to an interrogator (tag-to-reader).
Page 4, clause 5.1
Replace clause 5.1 by the following clause:
5.1 General
This part of ISO/IEC 18000 specifies three communication types: Type A, Type B and Type C.
Figure 1, Figure 2, and Figure 3 show the architecture of each of the three interrogator types. Figure Amd.1-1,
Figure Amd.1-2, and Figure Amd.1-3 show the architecture of each of the three tag types.
Table 1 provides an overview of the three communication types showing the protocol blocks from interrogator
input (demodulator) to interrogator output (modulator) independent of the communication flow.
© ISO/IEC 2006 – All rights reserved 19

ISO/IEC 18000-6:2004/Amd.1:2006(E)
Pulse Interval ASK
ALOHA
ASK FM0 Encoding modulation
protocol
(PIE) (DSB/SSB)
Figure 1 — Type A interrogator architecture

ASK
Binary tree Manchester
ASK FM0 modulation
protocol coding
(DSB/SSB)
Figure 2 — Type B interrogator architecture

ASK
ASK FM0 modulation
(DSB/SSB)
slotted uniquely
random decodable
anticollision PIE
Miller
PR-ASK
PSK Modulated
modulation
Subcarrier
Figure 3 — Type C interrogator architecture

ASK Pulse Interval
ALOHA
m
...