ETSI TS 101 601 V1.1.1 (2012-07)

Technical Specification
Electromagnetic compatibility
and radio spectrum matters (ERM);
The specification and implementation of design changes to
interrogators and specification of the test plan for
the Preliminary Tests and the Trial;
Modification of interrogators and specification of
test plans for the Preliminary Tests and Trial

2 ETSI TS 101 601 V1.1.1 (2012-07)

Reference
DTS/ERM-TG34-11
Keywords
DAA, ER-GSM, radio, RFID
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3 ETSI TS 101 601 V1.1.1 (2012-07)
Contents
Intellectual Property Rights . 4
Foreword . 4
Introduction . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 5
3 Definitions, symbols and abbreviations . 6
3.1 Definitions . 6
3.2 Symbols . 6
3.3 Abbreviations . 6
4 Background Information . 7
5 RFID Interrogator modifications . 7
5.1 System concept . 7
5.2 Hardware modifications . 7
5.2.1 RFID specific . 7
5.2.2 Railways specific . 8
5.3 Software modifications . 9
6 RFID Interrogator acceptance test . 9
6.1 RFID standards . 9
6.2 ETSI standards . 9
6.3 (E)R-GSM mitigation tests . 9
6.3.1 (E)R-GSM detection and decoding . 9
6.3.2 Detection at start-up of interrogator . 9
6.3.3 Detection at start-up of (E)R-GSM BTS . 10
6.4 Acceptance test results . 10
Annex A (informative): UHF RFID Interrogator modification description . 11
Annex B (informative): UHF RFID Interrogator acceptance test results . 12
Annex C (informative): Bibliography . 13
History . 14

ETSI
4 ETSI TS 101 601 V1.1.1 (2012-07)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://ipr.etsi.org).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Electromagnetic compatibility and
Radio spectrum Matters (ERM).
Introduction
In order to accommodate the spectrum needs for the increasing number of RFID devices and systems, an extension band
for high power RFID systems in the range between 915 MHz and 921 MHz has been requested. This band is already
used by RFID in several countries worldwide and its designation in Europe would increase its functionality and simplify
the international movement of goods using RFID identification systems. In Europe, a part of this new frequency band
has to be shared between the primary user ER-GSM and RFID. In order to guarantee an interference-free coexistence
between the two systems, mechanisms have to be implemented by RFID systems to reduce the probability of
interference to an acceptable minimum. These techniques can be either of regulatory, technical or operational nature.
The present document includes a description of the modifications made to the hardware and software of two UHF RFID
interrogators in order to implement demonstrators with the Detect-Avoid-Avoid (DAA) technique defined in
TS 102 902 [i.1] and TS 102 903 [i.2]. In addition a specification of acceptance tests for the modified interrogators is
provided.
ETSI
5 ETSI TS 101 601 V1.1.1 (2012-07)
1 Scope
The present document specifies the practical implementation of the DAA mitigation technique for UHF RFID systems
sharing the band 918 MHz to 921 MHz with ER-GSM. It covers the required modifications to UHF RFID interrogators
as well as the subsequent acceptance tests. The purpose of the modified interrogators, (also called demonstrators) is to
validate a subset of the mitigation techniques specified in [i.1] and [i.2]. The present document only covers the design
modification and acceptance tests.
The system tests together with ER-GSM will be covered in TR 101 602 [i.7].
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 302 208 (V1.4.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Radio Frequency Identification Equipment operating in the band 865 MHz to 868 MHz with
power levels up to 2 W".
2.2 Informative references
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI TS 102 902: "Electromagnetic compatibility and radio spectrum matters (ERM); Methods,
parameters and test procedures for cognitive interference mitigation towards ER-GSM for use by
UHF RFID using Detect-And-Avoid (DAA) or other similar techniques".
[i.2] ETSI TS 102 903: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Compliance tests for cognitive interference mitigation for use by UHF RFID using Detect-And-
Avoid (DAA) or other similar techniques".
[i.3] EIRENE System Requirements Specification Version 15.1.
[i.4] ETSI TS 144 018: "Digital cellular telecommunications system (Phase 2+); Mobile radio interface
layer 3 specification; Radio Resource Control (RRC) protocol (3GPP TS 44.018 version 10.6.0
Release 10)".
[i.5] ETSI TR 102 649-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Technical characteristics of Short Range Devices (SRD) and RFID in the UHF Band; System
Reference Document for Radio Frequency Identification (RFID) and SRD equipment; Part 2:
Additional spectrum requirements for UHF RFID, non-specific SRDs and specific SRDs".
[i.6] ISO/IEC 18000-6:2010: "Information technology -- Radio frequency identification for item
management -- Part 6: Parameters fo
...