ETSI TR 103 139 V1.1.1 (2013-04)

Mobile Specification Group (MSG) Assessment of IMT Base Station (BS) emissions in relation to Block Edge Masks (BEM)

DTR/MSG-TFES-11

General Information

• Status: Published
• Publication Date: 22-Apr-2013
• Technical Committee: MSG TFES - Task Force for European Standards for IMT-2000
• Current Stage: 12 - Completion
• Due Date: 02-May-2013
• Completion Date: 23-Apr-2013

Standards Content (Sample)

Technical Report
Mobile Specification Group (MSG);
Assessment of IMT Base Station (BS) emissions in relation
to Block Edge Masks (BEM)
2 ETSI TR 103 139 V1.1.1 (2013-04)

Reference
DTR/MSG-TFES-11
Keywords
3G, 3GPP, 3GPP2, Base Station, Block Edge
Mask cdma2000, cellular, digital, E-UTRA, IMT,
IMT-2000, regulation, UMTS, UTRA, WCDMA,
WiMAX
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3 ETSI TR 103 139 V1.1.1 (2013-04)
Contents
Intellectual Property Rights . 4
Foreword . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 5
3 Definitions and abbreviations . 6
3.1 Definitions . 6
3.2 Abbreviations . 6
4 Block Edge Masks . 7
4.1 Relation between BEM and unwanted emission limits . 7
4.2 Conclusion for BEM conditions expressed as e.i.r.p. . 8
5 BEM Assessment . 8
5.1 UTRA BS Measurement procedure . 9
5.1.1 Measurement procedure . 9
5.1.2 Environmental conditions . 9
5.1.3 Measurement of different Base Station configurations . 9
5.1.4 Interpretation of measurement results . 9
5.2 E-UTRA BS Measurement procedure . 10
5.2.1 Measurement procedure . 10
5.2.2 Environmental conditions . 10
5.2.3 Measurement of different Base Station configurations . 10
5.2.4 Interpretation of measurement results . 10
5.3 MSR BS Measurement procedure . 11
5.3.1 Measurement procedure . 11
5.3.2 Environmental conditions . 11
5.3.3 Measurement of different Base Station configurations . 11
5.3.4 Interpretation of measurement results . 11
5.4 Cdma2000 Measurement procedure . 12
5.4.1 Measurement procedure . 12
5.4.2 Environmental conditions . 12
5.4.3 Measurement of different Base Station configurations . 12
5.4.4 Interpretation of measurement results . 12
5.5 Mobile WIMAX Measurement procedure . 12
5.5.1 Measurement procedure . 12
5.5.2 Environmental conditions . 13
5.5.3 Measurement of different Base Station configurations . 13
5.5.4 Interpretation of measurement results . 13
6 BEM Evaluation . 13
Annex A: Bibliography . 15
History . 16

ETSI
4 ETSI TR 103 139 V1.1.1 (2013-04)
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 Report (TR) has been produced by ETSI Technical Committee Mobile Standards Group (MSG).
ETSI
5 ETSI TR 103 139 V1.1.1 (2013-04)
1 Scope
The present document describes measurement procedures and considerations in order to evaluate the alignment of IMT
Base Station (BS) emission performance with Block Edge Mask technical license conditions.
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.
Not applicable.
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 TR 102 748: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Impact of
the trend towards flexibility in spectrum usage on the principles for drafting Harmonized
Standards and the ETSI work programme for Harmonized Standards".
[i.2] ECC Recommendation (11)06: "Block Edge Mask Compliance Measurements for Base Stations"
(October 2011).
[i.3] ETSI EN 301 908-3: "IMT cellular networks; Harmonized EN covering the essential requirements
of article 3.2 of the R&TTE Directive; Part 3: CDMA Direct Spread (UTRA FDD) Base Stations
(BS)".
[i.4] ETSI TS 125 141: "Universal Mobile Telecommunications System (UMTS); Base Station (BS)
conformance testing (FDD) (3GPP TS 25.141)".
[i.5] ETSI EN 301 908-14: "IMT cellular networks; Harmonized EN covering the essential
requirements of article 3.2 of the R&TTE Directive; Part 14: Evolved Universal Terrestrial Radio
Access (E-UTRA) Base Stations (BS)".
[i.6] ETSI TS 136 141: "LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station
(BS) conformance testing (3GPP TS 36.141)".
[i.7] ETSI EN 301 908-18: "IMT cellular networks; Harmonized EN covering the essential
requirements of article 3.2 of the R&TTE Directive; Part 18: E-UTRA, UTRA and GSM/EDGE
Multi-Standard Radio (MSR) Base Station (BS)".
[i.8] ETSI TS 137 141: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
Telecommunications System (UMTS); LTE; E-UTRA, UTRA and GSM/EDGE; Multi-Standard
Radio (MSR) Base Station (BS) conformance testing (3GPP TS 37.141)".
ETSI
6 ETSI TR 103 139 V1.1.1 (2013-04)
[i.9] ETSI EN 301 908-5: "IMT cellular networks; Harmonized EN covering the essential requirements
of article 3.2 of the R&TTE Directive; Part 5: CDMA Multi-Carrier (cdma2000) Base Stations
(BS)".
[i.10] TIA-97-H: "Recommended Minimum Performance Standards for cdma2000 Spread Spectrum
Base Stations" (3GPP2 C.S0010-D V1.0).
[i.11] TIA-864-D: "Recommended Minimum Performance Standards for cdma2000 High Rate Packet
Data Access Network" (3GPP2 C.S0032-C V1.0).
[i.12] ETSI EN 301 908-20: "IMT cellular networks; Harmonized EN covering the essential
requirements of article 3.2 of the R&TTE Directive; Part 20: OFDMA TDD WMAN (Mobile
WiMAX) TDD Base Stations (BS)".
[i.13] Recommendation ITU-R SM.329-12 (09/2012): "Unwanted emissions in the spurious domain".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
in-block emissions: unwanted emissions in the frequency range within an operator's assigned frequency block
out-of-band domain: frequency range, immediately outside the necessary bandwidth but excluding the spurious
domain, in which out-of-band emissions generally predominate
NOTE: Out-of-band emissions, defined based on their source, occur in the out-of-band domain and, to a lesser
extent, in the spurious domain. Spurious emissions likewise may occur in the out-of-band domain as well
as in the spurious domain.
out-of-band emissions: emission on a frequency or frequencies immediately outside the necessary bandwidth which
results from the modulation process, but excluding spurious emissions
out-of-block emissions: unwanted emissions in the frequency range outside an operator's assigned frequency block
spurious domain: frequency range beyond the out-of-band domain in which spurious emissions generally predominate
unwanted emissions: consist of spurious emissions and out-of-band emissions
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
BEM Block Edge Mask
BS Base Station
BW Bandwidth
e.i.r.p. equivalent isotropically radiated power
MIMO Multiple Input Multiple Output
MSR Multi-Standard Radio
RAT Radio Access Technology
RBW Resolution BandWidth
RET Remote Electrical Tilting
RF Radio Frequency
UMTS Universal Mobile Telecommunications System
UTRA Universal Terrestrial Radio Access
WAPECS Wireless Access Policy for Electronic Communication Services
WIMAX Worldwide Interoperability for Microwave Access
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7 ETSI TR 103 139 V1.1.1 (2013-04)
4 Block Edge Masks
For several EC and ECC harmonized frequency band decisions, parameters in terms of Block Edge Masks (BEM) have
been part of the technical conditions in the decisions and will thus form part of license conditions when mobile systems
are deployed. The BEM approach has been an essential part of the so called WAPECS approach for flexibility of
spectrum usage. The trend towards flexibility and its impact on ETSI harmonized standards was studied by ETSI ERM
in the ERM Flex activity, as reported in [i.1].
Recently CEPT/ECC WG FM22 produced ECC Rec (11)06 [i.2] describing measurement methods that would enable
CEPT administrations to verify BEM compliance in the field. The recommendation provides descriptions of both
radiated (e.i.r.p.) measurements and assessment of BEM through conducted measurements. ECC Rec (11)06 [i.2]
recommends that assessment of block edge masks with absolute power limits should be done using a conducted
measurement directly at the transmitter output. While the methods described in ECC Rec (11)06 [i.2] provide one way
for administrations to conduct monitoring of already deployed systems, it is not a feasible general approach for
assessing BEM condition alignment by other relevant parties such as the license holder (operator) or the Base Station
vendor.
4.1 Relation between BEM and unwanted emission limits
The report from the ERM Flex activity [i.1] makes a thorough analysis of how technical conditions in the form of Block
Edge Masks relate to technical requirements such as unwanted emission limits that are set out in harmonized standards
and technical specifications. The BEM covers part of the requirements to prevent harmful interference and is defined
together with assumptions on the deployment scenario. This is depicted in figure 4.1-1, which illustrates that BEM
conditions relate both to technical requirements on equipment such as a Base Station, and to the licensing conditions on
the operator.
Spurious emissions and
Requirements on
other requirements
equipment (given in a
Block Edge Mask
Harmonized Standard)
and corresponding
variable depending on
assumptions
application/technology
Licensing requirements
on users/operators
Possibly other
requirements
Figure 4.1-1: Division of requirements to avoid harmful interference
and facilitate efficient use of spectrum (adapted from [i.1])
The harmonized standards and technical specifications for Base Stations define unwanted emission limits, usually in the
form of a spectrum emissions mask that covers frequencies in the out-of-band domain adjacent to the transmitted
carriers. For some types of BS, the mask is called an Operating band unwanted emissions mask and may then cover
frequencies in both the out-of-band and spurious domains. The emission masks are expressed in terms of conducted
power at the antenna connector(s) of the BS equipment and do therefore not explicitly account for antennas or any other
site equipment that may be attached to the BS. These emission masks are related to the specific transmitter
characteristics and channel arrangement of the Radio Access Technology (RAT) concerned, so different RATs may
have different equipment emission masks. The emission mask limits are set as absolute power or relative to the
transmitted carrier power.
Block Edge Masks, on the other hand, apply to the entire block of spectrum that is assigned to an operator, irrespective
of the number of channels occupied by the chosen technology that any operator may deploy in their allocated block.
A BEM can be specified in terms of absolute radiated power (e.i.r.p.) or transmitted power. The mask covers frequency
ranges outside the assigned frequency block (out-of-block emissions), but in some cases also emissions inside the
assigned frequency block (in-block emissions).
ETSI
8 ETSI TR 103 139 V1.1.1 (2013-04)
NOTE: In some regulatory documents, out-of-block emissions in relation to Block Edge Masks are incorrectly
called "out-of-band emissions". The term out-of-band emissions is defined in the Radio Regulations as
"Emission on a frequency or frequencies immediately outside the necessary bandwidth which results from
the modulation process, but excluding spurious emissions" [i.13] and it is a term that is not related to an
operator's assigned frequency block or to an operating band available for mobile services.
The BEM limits set in several harmonized spectrum decisions are intended to form part of national authorization
regimes for spectrum usage and are set relative to the license block of an operator. It is identified in the ETSI study
in [i.1] that emissions limited by an e.i.r.p. BEM may be controlled through several parameters. These are:
1) Transmit power level.
2) Antenna gain.
3) Minimum frequency separation from the block edge of outermost channels.
4) Transmit spectrum mask attenuation enhancements (additional filters, BS only).
Of these four parameters, only one (additional filters) can be provided by the manufacturer, while the other three are
under the control of the operator (as allowed for by the equipment) and can thus potentially be adjusted to meet the
BEM limits when deploying the equipment.
4.2 Conclusion for BEM conditions expressed as e.i.r.p.
It is concluded in the ERM Flex study [i.1] that it would not be possible to directly demonstrate conformance with an
e.i.r.p. Block Edge Mask in a lab environment, since the BEM puts a limit on the radiated emissions from the antenna of
the deployed Base Station relative to an operator license block, and not on the emissions relative to the transmitted
signal at the antenna connector. The e.i.r.p. emissions of the deployed system will obviously depend on the conducted
spectrum emissions of the transmitter, but they will in addition depend on transmitter power dynamics and frequency
settings, chosen antenna gain, site configuration and additional attenuation enhancements provided by the manufacturer
(e.g. additional BS filter) that may be implemented with the BS equipment or at the site.
It is however possible to make an assessment of unwanted emissions from a BS in relation to BEM technical conditions
that are expressed as e.i.r.p. This is done by indirect reference to the BEM limits, relating them to the unwanted
emissions as measured at the antenna connector. Together with an assessment or a declaration of deployment
parameters such as antenna gain and feeder losses, conformance to the unwanted emission limits can be related to
meeting the BEM limits.
It will in the end be under the discretion of the license holder (operator) to set the deployment parameters in such a way
that the BEM limits are met or to sign specific coordination agreements (if permitted within the licensing provision)
with neighboring operators. The BEM assessment described in the present document will however assist both the
operator and the BS vendor in that process.
Clause 5 of the present document describes the measurement procedures needed to assess the conducted unwanted
emissions from different types of Base Stations. Clause 6 demonstrates how the assessment or declaration of the
unwanted emission characteristics can be applied in a BEM evaluation.
5 BEM Assessment
The BEMs applicable for the frequency bands relevant for IMT BS have absolute limits and it is therefore
recommended to use conducted measurements, see also [i.2]. Conducted measurements are essential for evaluating the
BS emission characteristics against a BEM, since they are performed on individual equipment in the lab, before Base
Stations are deployed in the field.
Bas
...