SIST EN 303 215 V1.3.1:2015
Environmental Engineering (EE); Measurement methods and limits for power consumption in broadband telecommunication networks equipment
Environmental Engineering (EE); Measurement methods and limits for power consumption in broadband telecommunication networks equipment
The present document defines the power consumption metrics, the methodology and the test conditions to measure the
power consumption of broadband fixed telecommunication networks equipment. The present document does not cover
all possible configuration of equipment but only homogenous configurations.
The types of broadband access technologies covered by the present document are the ones widely deployed at the date
of publication. Currently, the present document considers DSLAM DSL, MSAN, GPON OLT and Point to Point OLT
equipment. Other access technologies may be included in further versions of the present document.
The present document also considers measurement methodology for VDSL2 equipment with vectoring functionality.
In addition to the full power state, power-saving states as defined in DSL standards [i.1] and [i.2] are also covered.
The present document focuses on Network Equipment. The end-user equipment will be handled in another document.
Okoljski inženiring (EE) - Merilne metode in mejne vrednosti za porabo električne energije v opremi za širokopasovna telekomunikacijska omrežja
Ta dokument obravnava meritve porabe električne energije, metodologijo in preskusne pogoje za merjenje porabe električne energije v opremi za širokopasovna fiksna telekomunikacijska omrežja. Ta dokument ne obravnava vseh možnih konfiguracij opreme, ampak samo homogene konfiguracije. V tem dokumentu so obravnavane vrste tehnologij širokopasovnega dostopa, ki so splošno razširjene na datum
izdaje. Ta dokument trenutno obravnava opremo DSLAM DSL, MSAN, GPON OLT in opremo OLT točka-točka. Druge tehnologije dostopa se lahko vključijo v poznejše različice tega dokumenta.
Ta dokument obravnava tudi merilno metodologijo za opremo VDSL2 s funkcionalnostjo dušenja hrupa. Poleg stanja polne pripravljenosti so obravnavana tudi energijsko varčna stanja, kot so določena v standardih DSL [i.1] in [i.2]. Ta dokument se osredotoča na omrežno opremo. Oprema za končnega uporabnika bo obravnavana v drugem dokumentu.
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Environmental Engineering (EE); Measurement methods and limits for power consumption in broadband telecommunication networks equipment33.040.01Telekomunikacijski sistemi na splošnoTelecommunication systems in general19.040Preskušanje v zvezi z okoljemEnvironmental testingICS:Ta slovenski standard je istoveten z:EN 303 215 V1.3.1SIST EN 303 215 V1.3.1:2015en,fr,de01-oktober-2015SIST EN 303 215 V1.3.1:2015SLOVENSKI
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SIST EN 303 215 V1.3.1:2015
ETSI EN 303 215 V1.3.1 (2015-04) Environmental Engineering (EE); Measurement methods and limits for power consumption in broadband telecommunication networks equipment
EUROPEAN STANDARD SIST EN 303 215 V1.3.1:2015
ETSI ETSI EN 303 215 V1.3.1 (2015-04) 2
Reference REN/EE-EEPS008 Keywords broadband, energy efficiency, power supply ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88
Important notice The present document can be downloaded from: http://www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: https://portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2015. All rights reserved.
DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association. SIST EN 303 215 V1.3.1:2015
ETSI ETSI EN 303 215 V1.3.1 (2015-04) 3 Contents Intellectual Property Rights . 4 Foreword . 4 Modal verbs terminology . 4 Introduction . 4 1 Scope . 5 2 References . 5 2.1 Normative references . 5 2.2 Informative references . 6 3 Definitions and abbreviations . 6 3.1 Definitions . 6 3.2 Abbreviations . 7 4 Definition of power consumption . 8 4.1 Definition of power consumption per port of broadband network equipment . 8 4.2 Power consumption taking into account the low-power states . 8 5 Measurement methods . 8 5.1 General requirements . 9 5.1.1 Measurement conditions . 9 5.1.2 Measurement instruments requirements . 9 5.1.3 Considered equipment . 9 5.1.4 Not considered equipment . 10 5.1.5 Measurement reference points . 10 5.1.6 Traffic profile . 11 5.2 Measurement method for DSLAM/MSAN equipment . 11 5.2.1 Equipment configuration . 11 5.2.2 Reference measurement method . 13 5.3 Measurement method for OLT equipment . 14 5.3.1 Equipment configuration . 14 5.3.2 Reference measurement method . 14 5.4 Alternative measurement method . 15 5.5 Reporting of the measurements . 16 Annex A (informative): Example hourly traffic distribution profiles . 17 Annex B (informative): NPC definition and calculation examples . 18 Annex C (informative): Measurement power consumption for DSLAM/MSAN and OLT equipment for different number of active ports . 19 History . 20
SIST EN 303 215 V1.3.1:2015
ETSI ETSI EN 303 215 V1.3.1 (2015-04) 4 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 European Standard (EN) has been produced by ETSI Technical Committee Environmental Engineering (EE).
National transposition dates Date of adoption of this EN: 6 April 2015 Date of latest announcement of this EN (doa): 31 July 2015 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 January 2016 Date of withdrawal of any conflicting National Standard (dow): 31 January 2016
Modal verbs terminology In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and "cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). "must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation. Introduction The present document defines the energy consumption metrics and measurement methods for fixed broadband telecommunication network equipment. SIST EN 303 215 V1.3.1:2015
ETSI ETSI EN 303 215 V1.3.1 (2015-04) 5 1 Scope The present document defines the power consumption metrics, the methodology and the test conditions to measure the power consumption of broadband fixed telecommunication networks equipment. The present document does not cover all possible configuration of equipment but only homogenous configurations. The types of broadband access technologies covered by the present document are the ones widely deployed at the date of publication. Currently, the present document considers DSLAM DSL, MSAN, GPON OLT and Point to Point OLT equipment. Other access technologies may be included in further versions of the present document. The present document also considers measurement methodology for VDSL2 equipment with vectoring functionality. In addition to the full power state, power-saving states as defined in DSL standards [i.1] and [i.2] are also covered. The present document focuses on Network Equipment. The end-user equipment will be handled in another document. 2 References 2.1 Normative 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. The following referenced documents are necessary for the application of the present document. [1] ETSI TS 101 388: "Access Terminals Transmission and Multiplexing (ATTM); Access transmission systems on metallic access cables; Asymmetric Digital Subscriber Line (ADSL) - European specific requirements [ITU-T Recommendation G.992.1 modified]". [2] ETSI EN 300 132-2: "Environmental Engineering (EE); Power supply interface at the input to telecommunications and datacom (ICT) equipment; Part 2: Operated by -48 V direct current (dc)". [3] ETSI TS 101 271 (V1.1.1): "Access Terminals Transmission and Multiplexing (ATTM); Access transmission system on metallic pairs; Very High Speed digital subscriber line system (VDSL2); [ITU-T Recommendation G.993.2 modified]". [4] Void. [5] ETSI ES 201 970: "Access and Terminals (AT); Public Switched Telephone Network (PSTN); Harmonized specification of physical and electrical characteristics at a 2-wire analogue presented Network Termination Point (NTP)". [6] Recommendation ITU-T G.984: "Gigabit-capable passive optical networks (GPON)". [7] Recommendation ITU-T G.984.2: "Gigabit-capable Passive Optical Networks (G-PON): Physical Media Dependent (PMD) layer specification". [8] IEEE 802.3: "IEEE Standard for Information technology -- Telecommunications and information exchange between systems --Local and metropolitan area networks -- Specific requirements -- Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications".
[9] Broadband Forum TR-100: "ADSL2/ADSL2plus; Performance Test Plan". [10] Broadband Forum TR-114: "VDSL2 Performance Test Plan". SIST EN 303 215 V1.3.1:2015
ETSI ETSI EN 303 215 V1.3.1 (2015-04) 6 2.2 Informative 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. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. 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] Recommendation ITU-T G.992.3 (2005): "Asymmetric digital subscriber line transceivers 2 (ADSL2)". [i.2] Recommendation ITU-T G.992.5 (2005): "Asymmetric Digital Subscriber Line (ADSL) transceivers - Extended bandwidth ADSL2 (ADSL2plus)". [i.3] Recommendation ITU-T G.993.2 (2006): "Very high speed digital subscriber line 2 (VDSL2)". [i.4] ETSI TR 102 530: "Environmental Engineering (EE); The reduction of energy consumption in telecommunications equipment and related infrastructure". [i.5] Broadband Forum TR-202: "ADSL2/ADSL2plus Low-Power Mode Guidelines". [i.6] Void. [i.7] IEC 60050: "International Electrotechnical Vocabulary - Electrical and electronic measurements and measuring instruments - Part 311: General terms relating to measurements - Part 312: General terms relating to electrical measurements - Part 313: Types of electrical measuring instruments - Part 314: Specific terms according to the type of instrument". NOTE: Available at http://webstore.iec.ch/webstore/webstore.nsf/artnum/027448!opendocument. [i.8] IEC 62018: "Power consumption of information technology equipment - Measurement methods". NOTE: Equivalent to CENELEC EN 62018. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: accuracy (of a measuring instrument): quality which characterizes the ability of a measuring instrument to provide an indicated value close to a true value of the measurand NOTE 1: This term is used in the "true value" approach. NOTE 2: Accuracy is all the better when the indicated value is closer to the corresponding true value. NOTE 3: See IEC 60050 [i.7], definition (311-06-08). active line: line in operational mode and carrying traffic as specified for that mode of operation (ADSL2plus or VDSL2) broadband telecommunication network equipment: equipment of broadband technology that is part of a telecommunication network broadband terminal equipment: equipment of broadband technology that is connected beyond the Network Termination Point of a telecommunication network SIST EN 303 215 V1.3.1:2015
ETSI ETSI EN 303 215 V1.3.1 (2015-04) 7 full-power state: state in which the maximal allowed data transmission is possible NOTE: The maximum is defined by the physical properties of the line and the settings of the operator (e.g. L0 for ADSL2/2plus). low-power state: state in which a limited power reduction capability and a limited data transmission is allowed NOTE: It is entered automatically from the full power state after the data transmission during a certain time is lower than the limit. If more than the limited data has to be transmitted from either side a state change to the full power state is entered automatically. The low power state may comprise multiple sub-states with history dependant state transition rules (e.g. L2 for ADSL2/2plus). power consumption: power used by a device to achieve an intended application performance stand-by state: state in which the largest power reduction capability and no transmission of data is possible NOTE: From this state a direct state change to the full-transmission state is possible, if data has to be transmitted from either side (e.g. L3 for ADSL2/2plus). telecommunication network: network operated under a license granted by a national telecommunications authority, which provides telecommunications between Network Termination Points (NTPs) (i.e. excluding terminal equipment beyond the NTPs) 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AC Alternative Current ADSL Asymmetric Digital Subscriber Line ADSL2plus Second generation ADSL with extended bandwidth BBF Broadband Forum CPE Customer Premises Equipment DBA Dynamic Bandwidth Allocation DC Directive Current DPBO Downstream Power Back-Off DSL Digital Subscriber Line DSLAM Digital Subscriber Line Access Multiplexer DSM Dynamic Spectrum Management GPON Gigabit Passive Optical Network IP Internet Protocol
MAC Media Access Control MELT Metallic Loop Test MIMO Multiple Input Multiple Output MPLS Multiprotocol Label Switching MSAN Multi Service Access Node NPC Normalized Power Consumption OLT Optical Line Termination ONU Optical Network Unit POTS Plain Old Telephone Service PSTN Public Switched Telephone Network QoS Quality of Service SNR Signal Noise Ratio SOHO Small Office/Home Office UPBO Upstream Power Back-Off VAC Ventilation Air Conditioning
VDSL Very high speed Digital Subscriber Line VDSL2 second generation VDSL VLAN Virtual Local Area Network SIST EN 303 215 V1.3.1:2015
ETSI ETSI EN 303 215 V1.3.1 (2015-04) 8 4 Definition of power consumption 4.1 Definition of power consumption per port of broadband network equipment The power consumption of broadband telecommunication network equipment is defined as:
PBBport = PBBeq / Nports Where:
PBBeq is the power consumption (in W) of a fully equipped broadband network equipment, measured at the electric power input interface, placed at the premises of the operator or the equipment supplier, which connects multiple broadband subscribers to a backbone. PBBeq is measured in determined environmental conditions defined in clause 5.1.1. PBBport is the power consumption per port in W of the broadband network equipment for which the limits are defined in the present document. Nports is the maximum number of subscriber lines access ports served by the broadband network equipment under test.
4.2 Power consumption taking into account the low-power states The low-power states are intended to reduce the power consumption during periods of no or minimal traffic needs (e.g. low data-rate applications or control signalling only). When these low-power states are used, the achievable power consumption reduction can be estimated by using profiles based on user traffic assumptions, some example of user hourly traffic as illustrated in annex A. NOTE 1: Example of power-saving states usage. A number of power-saving states are defined in the DSL standards (L2, L3, Recommendations ITU-T G.992.3 [i.1] and G.992.5 [i.2]). These power-saving states are implemented, both in the Network equipment (i.e. the subject of the present document) and the CPE/end-user equipment deployed at the premises of the user of the broadband line; this will enable the operator to use these to further limit the power consumption of the equipment. Further study is required to optimize the way in which the low-power states are controlled. In particular, to determine the levels of interference that might arise due to the fluctuating crosstalk caused by frequent multi-state power transitions. It is important to notice that it is only possible for GPON to use stand-by state if all ONU are in stand-by state and not individually as possible for Point-to-Point transmission. NOTE 2: Additional power saving solutions. A number of additional power saving solutions are available. Some of these are listed below. However the list is not complete and both the developers and users of broadband network equipment are encouraged to investigate and introduce new power saving solutions:
Politeness algorithms.
Dynamic Spectrum Management.
Boards optimized for remote applications (reduced line power).
Dynamic power saving for unused components such as line card, chipset, port, etc. 5 Measurement methods This clause describes the methods to measure the power consumption of broadband network equipment and also gives the conditions under which these measurements shall be performed. SIST EN 303 215 V1.3.1:2015
ETSI ETSI EN 303 215 V1.3.1 (2015-04) 9 5.1 General requirements 5.1.1 Measurement conditions The power measurements shall be performed in a laboratory environment under the following conditions: • Room Temperature: 25 °C ± 2 °C. • Room Relative Humidity: 30 % to 75 %. • Operating voltage:
- DC Powered Equipment: According to ETSI EN 300 132-2 [2], -54,5 V ± 1,5 V for nominal voltage of -48 V DC powered equipment. Equipment using voltage other than -48 V DC shall be tested at ± 1 % of the nominal voltage. - AC Powered Equipment: 230 V ± 1 % for nominal voltage of 230 V AC and frequency 50 Hz ± 1 %. • Minimum Measurement Duration: Equipment shall be allowed to stabilize to get stable power measurement. If power varies over the measurement interval time, an average of measurement shall be calculated: - For DSLAM equipment, wait 1 minute to settle bitswap after entering L0 mode. After entering L2 mode, wait one more minute after achieving the final trimmed power level. - For OLT equipment, wait till OLT and the connected ONUs have finished ranging and dynamic bandwidth allocation (DBA). The DBA will ensure that any unused bandwidth on a specific GPON port is allocated to the ONUs connected to it. 5.1.2 Measurement instruments requirements All measurement instruments used should be calibrated by counterpart national metrology institute and within calibration due date: • Power Source: Power sources used to provide power to the equipment under test shall be capable of providing a minimum of 1,5 times the power rating of the equipment under test. • Input power: - Resolution: ≤ 10 mA; ≤ 100 mV; ≤ 100 mW - DC current: ± 1 % - DC voltage: ± 1 % - AC power: ± 1 %:
An available current crest factor of 5 or more
The test instrument shall have a bandwidth of at least 1 kHz NOTE 1: Measurement equipment with higher digitizing rates and higher accuracy may be desirable to ensure accurate measurement. NOTE 2: Additional information on accuracy can be found in IEC 62018 [i.8]. 5.1.3 Considered equipment The following items are considered part of the broadband network equipment and therefore their power consumption shall be taken into account to get the total power consumption (PBBeq) of the broadband network equipment: • Network Termination board, providing one or more links to the Core or Backhaul Network. NOTE: The actual number of links should reflect the normal resilience practice for that type of equipment. Furthermore, all uplink ports should carry test traffic averaged or approximatively averaged. SIST EN 303 215 V1.3.1:2015
ETSI ETSI EN 303 215 V1.3.1 (2015-04) 10 • Line Termination board, providing a number of DSL, POTS, GPON or Point to Point Ethernet ports connected to the end-user through the metallic lines or optical fibre. • Backplane (or other) to interconnect the different blocks of the broadband network equipment. • Inside Rack Cooling system (e.g. fans drawer inside cabinet based broadband systems). • Normal operational power supply unit. 5.1.4 Not considered equipment The following items are not considered part of the broadband network equipment and therefore their power consumption shall not be added to the power consumption of the broadband network equipment: • External rectifier (AC - DC converter). • Room or outdoor Cabinet Ventilation and Air Conditioning Unit (VAC Unit). • Auxiliary or redundant power unit. • Battery. • For DSLAM equipment, Additional External signal processing (Dynamic Spectrum Management (DSM) and Multiple Input Multiple Output (MIMO) techniques if not implemented as part of the Line Termination board). For those boards which have more than the bare DSL functionality but have additional functions (e.g. MELT, vectoring, test access and channel bonding, etc.), these boards are to be used in normal DSL mode of operation with such additional functions disabled. Optionally a measurement with these functions enabled can be described/requested. In case such additional functions cannot be fully disabled, manufacturer will declare what is the extra power budget due to the added functionality. Such extra budget will not be considered in PBBport.
5.1.5 Measurement reference points
Line Input / Output Signal Recti - fier Climate Unit Broadband Equipment . . . . . . Battery AC Input - 48V AC1 AC2 DC2 DC1 3pp/Aux Eq Enclosure Core Interface “A”
Figure 1: Broadband Node site reference model The power consumption requirements of the present document apply at Interface "A" [2] as shown in figure 1 (i.e. at the point DC2 for the configuration in figure 1). SIST EN 303 215 V1.3.1:2015
ETSI ETSI EN 303 215 V1.3.1 (2015-04) 11 5.1.6 Traffic profile Definition of Ethernet traffic: • Bridge mode. • Random variable packet size distribution from 64 octets to 1 518 octets (bytes). • Traffic rates limited to 80 % of net activation rate (takes overhead into account). Traffic shall flow in both directions, but due in case of Upstream and Downstream possible asymmetry, loop-back mode is not allowed except for Point-to-Point OLT. 5.2 Measurement method for DSLAM/MSAN equipment In the present document only homogenous configuration are measured. Mixed configuration (e.g. DSLAM with a mix of ADSL2/2plus, VDSL2 and optical interfaces) are not considered. 5.2.1 Equipment configuration DSLAM/MSAN equipment shall be configured as defined below. Active lines shall be carrying traffic over an ETSI loop 1, as defined in ETSI TS 101 388 [1] and ETSI TS 101 271 [3], without any additional noise. The loop length is dependent on the DSL technology (see Recommendations ITU-T G.992.3 [i.1], G.992.5 [i.2] and G.993.2 [i.3]) activated on the line. The test set-up is as shown in figure 2. Equipment conditions: • ADSL2plus configuration: - Loop length/type: see table 1. - Full power state is configured as follows:
Common line settings: as defined in BBF TR-100, table 7-1 [9].
General test profile: F-1/0 as defined in BBF TR-100, table 7-2 [9].
Specific test Profile: A2P_RA_F_30000k as defined in BBF TR-100, table 7-3 [9].
DPBO shall be off. - Low power state is configured as following:
PMMODE: L2 state enabled (Low power state).
L0-TIME: as defined in BBF TR-100, table B.2-25 [9].
L2-TIME: as defined in BBF TR-100, table B.2-25 [9].
L2-ATPR: 1 dB.
L2-ATPRT: in the range -1 dB to -31 dB. Manufacturer shall declare the minimum L2-ATPRT value necessary to respect the requirements of table A.1. NOTE 1: L2-ATPRT parameter defines the total maximum aggregate transmit power reduction that is allowed in L2 state. As such matching L2 power consumption targets with L2 value close to -1 dB is better (higher efficient) than matching the same targets but with L2 value close to -31 dB.
L2-MinDatarate: ≥ 128 kbps. NOTE 2: For real network implementation a reference for the setting can be found in BroadBand Forum documents TR-202 [i.5], for example L2 ATPRT ≤ 10 dB. SIST EN 303 215 V1.3.1:2015
ETSI ETSI EN 303 215 V1.3.1 (2015-04) 12 • VDSL2 configuration: - Loop-length/type: see table 1. - Common line settings: as defined in BBF TR-114, table 11 [10]. - General line settings: I-8/2 as defined in BBF TR-114, table 12 [10]. - Specific test Profile: RA_I_150_150 as defined in BBF TR-114, table 13 [10]. - Both DPBO and UPBO shall be off. • VDSL2 configuration with vectoring functionality enabled: - Loop-length/type: see table 1. - Common line settings: as defined in BBF TR-114, table 11 [10]. - General line settings: I-8/2 as defined in BBF TR-114, table 12 [10]. - Specific test Profile: RA_I_150_150 as defined in BBF TR-114, table 13 [10]. - Both DPBO and UPBO shall be off. - The DSLAM is configured for VDSL2 operation with upstream and downstream vectoring enabled on all its lines. For the configured profile, the DSLAM operates on all its lines at its maximum supported transmit power and over the widest frequency bands over which it supports vectoring. The DSLAM operates at its maximum cancellation capabilities in terms of number of cancelled disturbers and of SNR improvement gained with cancellation. Table 1: Loop-lengths for various DSL technologies Technology Loop length Reference loop Reference document ADSL2plus 2 500 m ETSI TS 101 388 [1] loop#1 BBF TR-100, table A.2-19 [9] VDSL2 profile 8a, 8b, 8d 1 200 m ETSI PE04 BBF TR-114, table 57 [10] VDSL2 profile 8c 1 200 m ETSI TP100 BBF TR-114, table 85 [10] VDSL2
...
ETSI EN 303 215 V1.3.1 (2015-04)
EUROPEAN STANDARD
Environmental Engineering (EE);
Measurement methods and limits for power consumption in
broadband telecommunication networks equipment
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2 ETSI EN 303 215 V1.3.1 (2015-04)
Reference
REN/EE-EEPS008
Keywords
broadband, energy efficiency, power supply
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2015.
All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 ETSI EN 303 215 V1.3.1 (2015-04)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 4
Introduction . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 6
3 Definitions and abbreviations . 6
3.1 Definitions . 6
3.2 Abbreviations . 7
4 Definition of power consumption . 8
4.1 Definition of power consumption per port of broadband network equipment . 8
4.2 Power consumption taking into account the low-power states . 8
5 Measurement methods . 8
5.1 General requirements . 9
5.1.1 Measurement conditions . 9
5.1.2 Measurement instruments requirements . 9
5.1.3 Considered equipment . 9
5.1.4 Not considered equipment . 10
5.1.5 Measurement reference points . 10
5.1.6 Traffic profile . 11
5.2 Measurement method for DSLAM/MSAN equipment . 11
5.2.1 Equipment configuration . 11
5.2.2 Reference measurement method . 13
5.3 Measurement method for OLT equipment . 14
5.3.1 Equipment configuration . 14
5.3.2 Reference measurement method . 14
5.4 Alternative measurement method . 15
5.5 Reporting of the measurements . 16
Annex A (informative): Example hourly traffic distribution profiles . 17
Annex B (informative): NPC definition and calculation examples . 18
Annex C (informative): Measurement power consumption for DSLAM/MSAN and OLT
equipment for different number of active ports . 19
History . 20
ETSI
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4 ETSI EN 303 215 V1.3.1 (2015-04)
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 European Standard (EN) has been produced by ETSI Technical Committee Environmental Engineering (EE).
National transposition dates
Date of adoption of this EN: 6 April 2015
Date of latest announcement of this EN (doa): 31 July 2015
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 January 2016
Date of withdrawal of any conflicting National Standard (dow): 31 January 2016
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
The present document defines the energy consumption metrics and measurement methods for fixed broadband
telecommunication network equipment.
ETSI
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5 ETSI EN 303 215 V1.3.1 (2015-04)
1 Scope
The present document defines the power consumption metrics, the methodology and the test conditions to measure the
power consumption of broadband fixed telecommunication networks equipment. The present document does not cover
all possible configuration of equipment but only homogenous configurations.
The types of broadband access technologies covered by the present document are the ones widely deployed at the date
of publication. Currently, the present document considers DSLAM DSL, MSAN, GPON OLT and Point to Point OLT
equipment. Other access technologies may be included in further versions of the present document.
The present document also considers measurement methodology for VDSL2 equipment with vectoring functionality.
In addition to the full power state, power-saving states as defined in DSL standards [i.1] and [i.2] are also covered.
The present document focuses on Network Equipment. The end-user equipment will be handled in another document.
2 References
2.1 Normative 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.
The following referenced documents are necessary for the application of the present document.
[1] ETSI TS 101 388: "Access Terminals Transmission and Multiplexing (ATTM); Access
transmission systems on metallic access cables; Asymmetric Digital Subscriber Line (ADSL) -
European specific requirements [ITU-T Recommendation G.992.1 modified]".
[2] ETSI EN 300 132-2: "Environmental Engineering (EE); Power supply interface at the input to
telecommunications and datacom (ICT) equipment; Part 2: Operated by -48 V direct current (dc)".
[3] ETSI TS 101 271 (V1.1.1): "Access Terminals Transmission and Multiplexing (ATTM); Access
transmission system on metallic pairs; Very High Speed digital subscriber line system (VDSL2);
[ITU-T Recommendation G.993.2 modified]".
[4] Void.
[5] ETSI ES 201 970: "Access and Terminals (AT); Public Switched Telephone Network (PSTN);
Harmonized specification of physical and electrical characteristics at a 2-wire analogue presented
Network Termination Point (NTP)".
[6] Recommendation ITU-T G.984: "Gigabit-capable passive optical networks (GPON)".
[7] Recommendation ITU-T G.984.2: "Gigabit-capable Passive Optical Networks (G-PON): Physical
Media Dependent (PMD) layer specification".
[8] IEEE 802.3: "IEEE Standard for Information technology -- Telecommunications and information
exchange between systems --Local and metropolitan area networks -- Specific requirements --
Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and
Physical Layer Specifications".
[9] Broadband Forum TR-100: "ADSL2/ADSL2plus; Performance Test Plan".
[10] Broadband Forum TR-114: "VDSL2 Performance Test Plan".
ETSI
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6 ETSI EN 303 215 V1.3.1 (2015-04)
2.2 Informative 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.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
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] Recommendation ITU-T G.992.3 (2005): "Asymmetric digital subscriber line transceivers 2
(ADSL2)".
[i.2] Recommendation ITU-T G.992.5 (2005): "Asymmetric Digital Subscriber Line (ADSL)
transceivers - Extended bandwidth ADSL2 (ADSL2plus)".
[i.3] Recommendation ITU-T G.993.2 (2006): "Very high speed digital subscriber line 2 (VDSL2)".
[i.4] ETSI TR 102 530: "Environmental Engineering (EE); The reduction of energy consumption in
telecommunications equipment and related infrastructure".
[i.5] Broadband Forum TR-202: "ADSL2/ADSL2plus Low-Power Mode Guidelines".
[i.6] Void.
[i.7] IEC 60050: "International Electrotechnical Vocabulary - Electrical and electronic measurements
and measuring instruments - Part 311: General terms relating to measurements - Part 312: General
terms relating to electrical measurements - Part 313: Types of electrical measuring instruments -
Part 314: Specific terms according to the type of instrument".
NOTE: Available at http://webstore.iec.ch/webstore/webstore.nsf/artnum/027448!opendocument.
[i.8] IEC 62018: "Power consumption of information technology equipment - Measurement methods".
NOTE: Equivalent to CENELEC EN 62018.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
accuracy (of a measuring instrument): quality which characterizes the ability of a measuring instrument to provide an
indicated value close to a true value of the measurand
NOTE 1: This term is used in the "true value" approach.
NOTE 2: Accuracy is all the better when the indicated value is closer to the corresponding true value.
NOTE 3: See IEC 60050 [i.7], definition (311-06-08).
active line: line in operational mode and carrying traffic as specified for that mode of operation (ADSL2plus or
VDSL2)
broadband telecommunication network equipment: equipment of broadband technology that is part of a
telecommunication network
broadband terminal equipment: equipment of broadband technology that is connected beyond the Network
Termination Point of a telecommunication network
ETSI
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7 ETSI EN 303 215 V1.3.1 (2015-04)
full-power state: state in which the maximal allowed data transmission is possible
NOTE: The maximum is defined by the physical properties of the line and the settings of the operator (e.g. L0 for
ADSL2/2plus).
low-power state: state in which a limited power reduction capability and a limited data transmission is allowed
NOTE: It is entered automatically from the full power state after the data transmission during a certain time is
lower than the limit. If more than the limited data has to be transmitted from either side a state change to
the full power state is entered automatically. The low power state may comprise multiple sub-states with
history dependant state transition rules (e.g. L2 for ADSL2/2plus).
power consumption: power used by a device to achieve an intended application performance
stand-by state: state in which the largest power reduction capability and no transmission of data is possible
NOTE: From this state a direct state change to the full-transmission state is possible, if data has to be transmitted
from either side (e.g. L3 for ADSL2/2plus).
telecommunication network: network operated under a license granted by a national telecommunications authority,
which provides telecommunications between Network Termination Points (NTPs) (i.e. excluding terminal equipment
beyond the NTPs)
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternative Current
ADSL Asymmetric Digital Subscriber Line
ADSL2plus Second generation ADSL with extended bandwidth
BBF Broadband Forum
CPE Customer Premises Equipment
DBA Dynamic Bandwidth Allocation
DC Directive Current
DPBO Downstream Power Back-Off
DSL Digital Subscriber Line
DSLAM Digital Subscriber Line Access Multiplexer
DSM Dynamic Spectrum Management
GPON Gigabit Passive Optical Network
IP Internet Protocol
MAC Media Access Control
MELT Metallic Loop Test
MIMO Multiple Input Multiple Output
MPLS Multiprotocol Label Switching
MSAN Multi Service Access Node
NPC Normalized Power Consumption
OLT Optical Line Termination
ONU Optical Network Unit
POTS Plain Old Telephone Service
PSTN Public Switched Telephone Network
QoS Quality of Service
SNR Signal Noise Ratio
SOHO Small Office/Home Office
UPBO Upstream Power Back-Off
VAC Ventilation Air Conditioning
VDSL Very high speed Digital Subscriber Line
VDSL2 second generation VDSL
VLAN Virtual Local Area Network
ETSI
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8 ETSI EN 303 215 V1.3.1 (2015-04)
4 Definition of power consumption
4.1 Definition of power consumption per port of broadband
network equipment
The power consumption of broadband telecommunication network equipment is defined as:
P = P / N
BBport BBeq ports
Where:
P is the power consumption (in W) of a fully equipped broadband network equipment, measured at the electric
BBeq
power input interface, placed at the premises of the operator or the equipment supplier, which connects multiple
broadband subscribers to a backbone. P is measured in determined environmental conditions defined in
BBeq
clause 5.1.1.
P is the power consumption per port in W of the broadband network equipment for which the limits are defined in
BBport
the present document.
N is the maximum number of subscriber lines access ports served by the broadband network equipment under test.
ports
4.2 Power consumption taking into account the low-power
states
The low-power states are intended to reduce the power consumption during periods of no or minimal traffic needs
(e.g. low data-rate applications or control signalling only). When these low-power states are used, the achievable power
consumption reduction can be estimated by using profiles based on user traffic assumptions, some example of user
hourly traffic as illustrated in annex A.
NOTE 1: Example of power-saving states usage.
A number of power-saving states are defined in the DSL standards (L2, L3, Recommendations ITU-T
G.992.3 [i.1] and G.992.5 [i.2]). These power-saving states are implemented, both in the Network
equipment (i.e. the subject of the present document) and the CPE/end-user equipment deployed at the
premises of the user of the broadband line; this will enable the operator to use these to further limit the
power consumption of the equipment. Further study is required to optimize the way in which the
low-power states are controlled. In particular, to determine the levels of interference that might arise due
to the fluctuating crosstalk caused by frequent multi-state power transitions.
It is important to notice that it is only possible for GPON to use stand-by state if all ONU are in stand-by
state and not individually as possible for Point-to-Point transmission.
NOTE 2: Additional power saving solutions. A number of additional power saving solutions are available. Some of
these are listed below. However the list is not complete and both the developers and users of broadband
network equipment are encouraged to investigate and introduce new power saving solutions:
Politeness algorithms.
Dynamic Spectrum Management.
Boards optimized for remote applications (reduced line power).
Dynamic power saving for unused components such as line card, chipset, port, etc.
5 Measurement methods
This clause describes the methods to measure the power consumption of broadband network equipment and also gives
the conditions under which these measurements shall be performed.
ETSI
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9 ETSI EN 303 215 V1.3.1 (2015-04)
5.1 General requirements
5.1.1 Measurement conditions
The power measurements shall be performed in a laboratory environment under the following conditions:
• Room Temperature: 25 °C ± 2 °C.
• Room Relative Humidity: 30 % to 75 %.
• Operating voltage:
- DC Powered Equipment: According to ETSI EN 300 132-2 [2], -54,5 V ± 1,5 V for nominal voltage
of -48 V DC powered equipment. Equipment using voltage other than -48 V DC shall be tested at ± 1 %
of the nominal voltage.
- AC Powered Equipment: 230 V ± 1 % for nominal voltage of 230 V AC and frequency 50 Hz ± 1 %.
• Minimum Measurement Duration: Equipment shall be allowed to stabilize to get stable power measurement. If
power varies over the measurement interval time, an average of measurement shall be calculated:
- For DSLAM equipment, wait 1 minute to settle bitswap after entering L0 mode. After entering L2 mode,
wait one more minute after achieving the final trimmed power level.
- For OLT equipment, wait till OLT and the connected ONUs have finished ranging and dynamic
bandwidth allocation (DBA). The DBA will ensure that any unused bandwidth on a specific GPON port
is allocated to the ONUs connected to it.
5.1.2 Measurement instruments requirements
All measurement instruments used should be calibrated by counterpart national metrology institute and within
calibration due date:
• Power Source: Power sources used to provide power to the equipment under test shall be capable of providing
a minimum of 1,5 times the power rating of the equipment under test.
• Input power:
- Resolution: ≤ 10 mA; ≤ 100 mV; ≤ 100 mW
- DC current: ± 1 %
- DC voltage: ± 1 %
- AC power: ± 1 %:
An available current crest factor of 5 or more
The test instrument shall have a bandwidth of at least 1 kHz
NOTE 1: Measurement equipment with higher digitizing rates and higher accuracy may be desirable to ensure
accurate measurement.
NOTE 2: Additional information on accuracy can be found in IEC 62018 [i.8].
5.1.3 Considered equipment
The following items are considered part of the broadband network equipment and therefore their power consumption
shall be taken into account to get the total power consumption (P ) of the broadband network equipment:
BBeq
• Network Termination board, providing one or more links to the Core or Backhaul Network.
NOTE: The actual number of links should reflect the normal resilience practice for that type of equipment.
Furthermore, all uplink ports should carry test traffic averaged or approximatively averaged.
ETSI
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10 ETSI EN 303 215 V1.3.1 (2015-04)
• Line Termination board, providing a number of DSL, POTS, GPON or Point to Point Ethernet ports connected
to the end-user through the metallic lines or optical fibre.
• Backplane (or other) to interconnect the different blocks of the broadband network equipment.
• Inside Rack Cooling system (e.g. fans drawer inside cabinet based broadband systems).
• Normal operational power supply unit.
5.1.4 Not considered equipment
The following items are not considered part of the broadband network equipment and therefore their power
consumption shall not be added to the power consumption of the broadband network equipment:
• External rectifier (AC - DC converter).
• Room or outdoor Cabinet Ventilation and Air Conditioning Unit (VAC Unit).
• Auxiliary or redundant power unit.
• Battery.
• For DSLAM equipment, Additional External signal processing (Dynamic Spectrum Management (DSM) and
Multiple Input Multiple Output (MIMO) techniques if not implemented as part of the Line Termination board).
For those boards which have more than the bare DSL functionality but have additional functions (e.g. MELT, vectoring,
test access and channel bonding, etc.), these boards are to be used in normal DSL mode of operation with such
additional functions disabled. Optionally a measurement with these functions enabled can be described/requested. In
case such additional functions cannot be fully disabled, manufacturer will declare what is the extra power budget due to
.
the added functionality. Such extra budget will not be considered in P
BBport
5.1.5 Measurement reference points
Core
Enclosure
DC1 DC2
AC1 AC2
- 48V .
Recti-
.
fier
Broadband .
Interface
Equipment
.
“A”
.
AC
Climate
.
Input
Unit
Battery
Line
Input /
3pp/Aux Eq
Output
Signal
Figure 1: Broadband Node site reference model
The power consumption requirements of the present document apply at Interface "A" [2] as shown in figure 1 (i.e. at the
point DC2 for the configuration in figure 1).
ETSI
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11 ETSI EN 303 215 V1.3.1 (2015-04)
5.1.6 Traffic profile
Definition of Ethernet traffic:
• Bridge mode.
• Random variable packet size distribution from 64 octets to 1 518 octets (bytes).
• Traffic rates limited to 80 % of net activation rate (takes overhead into account).
Traffic shall flow in both directions, but due in case of Upstream and Downstream possible asymmetry, loop-back mode
is not allowed except for Point-to-Point OLT.
5.2 Measurement method for DSLAM/MSAN equipment
In the present document only homogenous configuration are measured. Mixed configuration (e.g. DSLAM with a mix
of ADSL2/2plus, VDSL2 and optical interfaces) are not considered.
5.2.1 Equipment configuration
DSLAM/MSAN equipment shall be configured as defined below. Active lines shall be carrying traffic over an ETSI
loop 1, as defined in ETSI TS 101 388 [1] and ETSI TS 101 271 [3], without any additional noise. The loop length is
dependent on the DSL technology (see Recommendations ITU-T G.992.3 [i.1], G.992.5 [i.2] and G.993.2 [i.3])
activated on the line. The test set-up is as shown in figure 2.
Equipment conditions:
• ADSL2plus configuration:
- Loop length/type: see table 1.
- Full power state is configured as follows:
Common line settings: as defined in BBF TR-100, table 7-1 [9].
General test profile: F-1/0 as defined in BBF TR-100, table 7-2 [9].
Specific test Profile: A2P_RA_F_30000k as defined in BBF TR-100, table 7-3 [9].
DPBO shall be off.
- Low power state is configured as following:
PMMODE: L2 state enabled (Low power state).
L0-TIME: as defined in BBF TR-100, table B.2-25 [9].
L2-TIME: as defined in BBF TR-100, table B.2-25 [9].
L2-ATPR: 1 dB.
L2-ATPRT: in the range -1 dB to -31 dB. Manufacturer shall declare the minimum L2-ATPRT
value necessary to respect the requirements of table A.1.
NOTE 1: L2-ATPRT parameter defines the total maximum aggregate transmit power reduction that is allowed in
L2 state. As such matching L2 power consumption targets with L2 value close to -1 dB is better (higher
efficient) than matching the same targets but with L2 value close to -31 dB.
L2-MinDatarate: ≥ 128 kbps.
NOTE 2: For real network implementation a reference for the setting can be found in BroadBand Forum documents
TR-202 [i.5], for example L2 ATPRT ≤ 10 dB.
ETSI
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12 ETSI EN 303 215 V1.3.1 (2015-04)
• VDSL2 configuration:
- Loop-length/type: see table 1.
- Common line settings: as defined in BBF TR-114, table 11 [10].
- General line settings: I-8/2 as defined in BBF TR-114, table 12 [10].
- Specific test Profile: RA_I_150_150 as defined in BBF TR-114, table 13 [10].
- Both DPBO and UPBO shall be off.
• VDSL2 configuration with vectoring functionality enabled:
- Loop-length/type: see table 1.
- Common line settings: as defined in BBF TR-114, table 11 [10].
- General line settings: I-8/2 as defined in BBF TR-114, table 12 [10].
- Specific test Profile: RA_I_150_150 as defined in BBF TR-114, table 13 [10].
- Both DPBO and UPBO shall be off.
- The DSLAM is configured for VDSL2 operation with upstream and downstream vectoring enabled on
all its lines. For the configured profile, the DSLAM operates on all its lines at its maximum supported
transmit power and over the widest frequency bands over which it supports vectoring. The DSLAM
operates at its maximum cancellation capabilities in terms of number of cancelled disturbers and of SNR
improvement gained with cancellation.
Table 1: Loop-lengths for various DSL technologies
Technology Loop length Reference loop R
...
Draft ETSI EN 303 215 V1.2.11 (2014-12)
EUROPEAN STANDARD
Environmental Engineering (EE);
Measurement methods and limits for power consumption in
broadband telecommunication networks equipment
---------------------- Page: 1 ----------------------
2 Draft ETSI EN 303 215 V1.2.11 (2014-12)
Reference
REN/EE-EEPS008
Keywords
broadband, energy efficiency, power supply
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ETSI
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3 Draft ETSI EN 303 215 V1.2.11 (2014-12)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 4
Introduction . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 6
3 Definitions and abbreviations . 6
3.1 Definitions . 6
3.2 Abbreviations . 7
4 Definition of power consumption . 8
4.1 Definition of power consumption per port of broadband network equipment . 8
4.2 Power consumption taking into account the low-power states . 8
5 Measurement methods . 9
5.1 General requirements . 9
5.1.1 Measurement conditions . 9
5.1.2 Measurement instruments requirements . 9
5.1.3 Considered equipment . 10
5.1.4 Not considered equipment . 10
5.1.5 Measurement reference points . 11
5.1.6 Traffic profile . 11
5.2 Measurement method for DSLAM/MSAN equipment . 11
5.2.1 Equipment configuration . 11
5.2.2 Reference measurement method . 13
5.3 Measurement method for OLT equipment . 14
5.3.1 Equipment configuration . 14
5.3.2 Reference measurement method . 15
5.4 Alternative measurement method . 15
5.5 Reporting of the measurements . 16
Annex A (informative): Example hourly traffic distribution profiles . 18
Annex B (informative): NPC definition and calculation examples . 19
Annex C (informative): Measurement power consumption for DSLAM/MSAN and OLT
equipment for different number of active ports . 20
History . 21
ETSI
---------------------- Page: 3 ----------------------
4 Draft ETSI EN 303 215 V1.2.11 (2014-12)
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 draft European Standard (EN) has been produced by ETSI Technical Committee Environmental Engineering (EE),
and is now submitted for the combined Public Enquiry and Vote phase of the ETSI standards EN Approval Procedure.
Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 6 months after doa
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "may not", "need", "need not", "will",
(Verbal forms
"will not", "can" and "cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules
for the expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
The present document defines the energy consumption metrics and measurement methods for fixed broadband
telecommunication network equipment.
ETSI
---------------------- Page: 4 ----------------------
5 Draft ETSI EN 303 215 V1.2.11 (2014-12)
1 Scope
The present document defines the power consumption metrics, the methodology and the test conditions to measure the
power consumption of broadband fixed telecommunication networks equipment. The present document does not cover
all possible configuration of equipment but only homogenous configurations.
The types of broadband access technologies covered by the present document are the ones widely deployed at the date
of publication. Currently, the present document considers DSLAM DSL, MSAN, GPON OLT and Point to Point OLT
equipment. Other access technologies may be included in further versions of the present document.
The present document also considers measurement methodology for VDSL2 equipment with vectoring functionality.
In addition to the full power state, power-saving states as defined in DSL standards [i.1] and [i.2] are also covered.
The present document focuses on Network Equipment. The end-user equipment will be handled in another document.
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 TS 101 388: "Access Terminals Transmission and Multiplexing (ATTM); Access
transmission systems on metallic access cables; Asymmetric Digital Subscriber Line (ADSL) -
European specific requirements [ITU-T Recommendation G.992.1 modified]".
[2] ETSI EN 300 132-2: "Environmental Engineering (EE); Power supply interface at the input to
telecommunications and datacom (ICT) equipment; Part 2: Operated by -48 V direct current (dc)".
[3] ETSI TS 101 271 (V1.1.1): "Access Terminals Transmission and Multiplexing (ATTM); Access
transmission system on metallic pairs; Very High Speed digital subscriber line system (VDSL2);
[ITU-T Recommendation G.993.2 modified]".
[4] Void.
[5] ETSI ES 201 970: "Access and Terminals (AT); Public Switched Telephone Network (PSTN);
Harmonized specification of physical and electrical characteristics at a 2-wire analogue presented
Network Termination Point (NTP)".
[6] Recommendation ITU-T G.984: "Gigabit-capable passive optical networks (GPON)".
[7] Recommendation ITU-T G.984.2: "Gigabit-capable Passive Optical Networks (G-PON): Physical
Media Dependent (PMD) layer specification".
[8] IEEE 802.3: "IEEE Standard for Information technology -- Telecommunications and information
exchange between systems --Local and metropolitan area networks -- Specific requirements --
Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and
Physical Layer Specifications".
[9] Broadband Forum TR-100: "ADSL2/ADSL2plus; Performance Test Plan".
ETSI
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6 Draft ETSI EN 303 215 V1.2.11 (2014-12)
[10] Broadband Forum TR-114: "VDSL2 Performance Test Plan".
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] Recommendation ITU-T G.992.3 (2005): "Asymmetric digital subscriber line transceivers 2
(ADSL2)".
[i.2] Recommendation ITU-T G.992.5 (2005): "Asymmetric Digital Subscriber Line (ADSL)
transceivers - Extended bandwidth ADSL2 (ADSL2plus)".
[i.3] Recommendation ITU-T G.993.2 (2006): "Very high speed digital subscriber line 2 (VDSL2)".
[i.4] ETSI TR 102 530: "Environmental Engineering (EE); The reduction of energy consumption in
telecommunications equipment and related infrastructure".
[i.5] Broadband Forum TR-202: "ADSL2/ADSL2plus Low-Power Mode Guidelines".
[i.6] Void.
[i.7] IEC 60050: "International Electrotechnical Vocabulary - Electrical and electronic measurements
and measuring instruments - Part 311: General terms relating to measurements - Part 312: General
terms relating to electrical measurements - Part 313: Types of electrical measuring instruments -
Part 314: Specific terms according to the type of instrument".
NOTE: Available at http://webstore.iec.ch/webstore/webstore.nsf/artnum/027448!opendocument.
[i.8] IEC 62018: "Power consumption of information technology equipment - Measurement methods".
NOTE: Equivalent to CENELEC EN 62018.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
accuracy (of a measuring instrument): quality which characterizes the ability of a measuring instrument to provide an
indicated value close to a true value of the measurand
NOTE 1: This term is used in the "true value" approach.
NOTE 2: Accuracy is all the better when the indicated value is closer to the corresponding true value.
NOTE 3: See IEC 60050 [i.7], definition (311-06-08).
active line: line in operational mode and carrying traffic as specified for that mode of operation (ADSL2plus or
VDSL2)
broadband telecommunication network equipment: equipment of broadband technology that is part of a
telecommunication network
broadband terminal equipment: equipment of broadband technology that is connected beyond the Network
Termination Point of a telecommunication network
full-power state: state in which the maximal allowed data transmission is possible
NOTE: The maximum is defined by the physical properties of the line and the settings of the operator (e.g. L0 for
ADSL2/2plus).
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7 Draft ETSI EN 303 215 V1.2.11 (2014-12)
low-power state: state in which a limited power reduction capability and a limited data transmission is allowed
NOTE: It is entered automatically from the full power state after the data transmission during a certain time is
lower than the limit. If more than the limited data has to be transmitted from either side a state change to
the full power state is entered automatically. The low power state may comprise multiple sub-states with
history dependant state transition rules (e.g. L2 for ADSL2/2plus).
power consumption: power used by a device to achieve an intended application performance
stand-by state: state in which the largest power reduction capability and no transmission of data is possible
NOTE: From this state a direct state change to the full-transmission state is possible, if data has to be transmitted
from either side (e.g. L3 for ADSL2/2plus).
telecommunication network: network operated under a license granted by a national telecommunications authority,
which provides telecommunications between Network Termination Points (NTPs) (i.e. excluding terminal equipment
beyond the NTPs)
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternative Current
ADSL Asymmetric Digital Subscriber Line
ADSL2plus Second generation ADSL with extended bandwidth
BBF Broadband Forum
CPE Customer Premises Equipment
DBA Dynamic Bandwidth Allocation
DC Directive Current
DPBO Downstream Power Back-Off
DSL Digital Subscriber Line
DSLAM Digital Subscriber Line Access Multiplexer
DSM Dynamic Spectrum Management
GPON Gigabit Passive Optical Network
IP Internet Protocol
MAC Media Access Control
MELT Metallic Loop Test
MIMO Multiple Input Multiple Output
MPLS Multiprotocol Label Switching
MSAN Multi Service Access Node
NPC Normalized Power Consumption
OLT Optical Line Termination
ONU Optical Network Unit
POTS Plain Old Telephone Service
PSTN Public Switched Telephone Network
QoS Quality of Service
SNR Signal Noise Ratio
SOHO Small Office/Home Office
UPBO Upstream Power Back-Off
VAC Ventilation Air Conditioning
VDSL Very high speed Digital Subscriber Line
VDSL2 second generation VDSL
VLAN Virtual Local Area Network
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8 Draft ETSI EN 303 215 V1.2.11 (2014-12)
4 Definition of power consumption
4.1 Definition of power consumption per port of broadband
network equipment
The power consumption of broadband telecommunication network equipment is defined as:
P = P / N
BBport BBeq ports
Where:
P is the power consumption (in W) of a fully equipped broadband network equipment, measured at the electric
BBeq
power input interface, placed at the premises of the operator or the equipment supplier, which connects multiple
broadband subscribers to a backbone. P is measured in determined environmental conditions defined in
BBeq
clause 5.1.1.
P is the power consumption per port in W of the broadband network equipment for which the limits are defined in
BBport
the present document.
N is the maximum number of subscriber lines access ports served by the broadband network equipment under test.
ports
4.2 Power consumption taking into account the low-power
states
The low-power states are intended to reduce the power consumption during periods of no or minimal traffic needs
(e.g. low data-rate applications or control signalling only). When these low-power states are used, the achievable power
consumption reduction can be estimated by using profiles based on user traffic assumptions, some example of user
hourly traffic as illustrated in annex A.
NOTE 1: Example of power-saving states usage.
A number of power-saving states are defined in the DSL standards (L2, L3,
Recommendations ITU-T G.992.3 [i.1] and G.992.5 [i.2]). These power-saving states are implemented,
both in the Network equipment (i.e. the subject of the present document) and the CPE/end-user equipment
deployed at the premises of the user of the broadband line; this will enable the operator to use these to
further limit the power consumption of the equipment. Further study is required to optimize the way in
which the low-power states are controlled. In particular, to determine the levels of interference that might
arise due to the fluctuating crosstalk caused by frequent multi-state power transitions.
It is important to notice that it is only possible for GPON to use stand-by state if all ONU are in stand-by
state and not individually as possible for Point-to-Point transmission.
NOTE 2: Additional power saving solutions. A number of additional power saving solutions are available. Some of
these are listed below. However the list is not complete and both the developers and users of broadband
network equipment are encouraged to investigate and introduce new power saving solutions:
Politeness algorithms.
Dynamic Spectrum Management.
Boards optimized for remote applications (reduced line power).
Dynamic power saving for unused components such as line card, chipset, port, etc.
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9 Draft ETSI EN 303 215 V1.2.11 (2014-12)
5 Measurement methods
This clause describes the methods to measure the power consumption of broadband network equipment and also gives
the conditions under which these measurements shall be performed.
5.1 General requirements
5.1.1 Measurement conditions
The power measurements shall be performed in a laboratory environment under the following conditions:
• Room Temperature: 25 °C ± 2 °C.
• Room Relative Humidity: 30 % to 75 %.
• Operating voltage:
- DC Powered Equipment: According to ETSI EN 300 132-2 [2], -54,5 V ± 1,5 V for nominal voltage of
-48 V DC powered equipment. Equipment using voltage other than -48 V DC shall be tested at ± 1 % of
the nominal voltage.
- AC Powered Equipment: 230 V ± 1 % for nominal voltage of 230 V AC and frequency 50 Hz ± 1 %.
• Minimum Measurement Duration: Equipment shall be allowed to stabilize to get stable power measurement. If
power varies over the measurement interval time, an average of measurement shall be calculated:
- For DSLAM equipment, wait 1 minute to settle bitswap after entering L0 mode. After entering L2 mode,
wait one more minute after achieving the final trimmed power level.
- For OLT equipment, wait till OLT and the connected ONUs have finished ranging and dynamic
bandwidth allocation (DBA). The DBA will ensure that any unused bandwidth on a specific GPON port
is allocated to the ONUs connected to it.
5.1.2 Measurement instruments requirements
All measurement instruments used should be calibrated by counterpart national metrology institute and within
calibration due date:
• Power Source: Power sources used to provide power to the equipment under test shall be capable of providing
a minimum of 1,5 times the power rating of the equipment under test.
• Input power:
- Resolution: ≤ 10 mA; ≤ 100 mV; ≤ 100 mW
- DC current: ± 1 %
- DC voltage: ± 1 %
- AC power: ± 1 %:
An available current crest factor of 5 or more
The test instrument shall have a bandwidth of at least 1 kHz
NOTE 1: Measurement equipment with higher digitizing rates and higher accuracy may be desirable to ensure
accurate measurement.
NOTE 2: Additional information on accuracy can be found in IEC 62018 [i.8].
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10 Draft ETSI EN 303 215 V1.2.11 (2014-12)
5.1.3 Considered equipment
The following items are considered part of the broadband network equipment and therefore their power consumption
shall be taken into account to get the total power consumption (P ) of the broadband network equipment:
BBeq
• Network Termination board, providing one or more links to the Core or Backhaul Network.
NOTE: The actual number of links should reflect the normal resilience practice for that type of equipment.
Furthermore, all uplink ports should carry test traffic averaged or approximatively averaged.
• Line Termination board, providing a number of DSL, POTS, GPON or Point to Point Ethernet ports connected
to the end-user through the metallic lines or optical fibre.
• Backplane (or other) to interconnect the different blocks of the broadband network equipment.
• Inside Rack Cooling system (e.g. fans drawer inside cabinet based broadband systems).
• Normal operational power supply unit.
5.1.4 Not considered equipment
The following items are not considered part of the broadband network equipment and therefore their power
consumption shall not be added to the power consumption of the broadband network equipment:
• External rectifier (AC - DC converter).
• Room or outdoor Cabinet Ventilation and Air Conditioning Unit (VAC Unit).
• Auxiliary or redundant power unit.
• Battery.
• For DSLAM equipment, Additional External signal processing (Dynamic Spectrum Management (DSM) and
Multiple Input Multiple Output (MIMO) techniques if not implemented as part of the Line Termination board).
For those boards which have more than the bare DSL functionality but have additional functions (e.g. MELT, vectoring,
test access and channel bonding, etc.), these boards are to be used in normal DSL mode of operation with such
additional functions disabled. Optionally a measurement with these functions enabled can be described/requested. In
case such additional functions cannot be fully disabled, manufacturer will declare what is the extra power budget due to
the added functionality. Such extra budget will not be considered in P .
BBport
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11 Draft ETSI EN 303 215 V1.2.11 (2014-12)
5.1.5 Measurement reference points
Core
Enclosure
DC1 DC2
AC1 AC2
- 48V .
Recti-
.
fier
Broadband .
Interface
Equipment
.
“A”
.
AC
Climate
.
Input
Unit
Battery
Line
Input /
3pp/Aux Eq
Output
Signal
Figure 1: Broadband Node site reference model
The power consumption requirements of the present document apply at Interface "A" [2] as shown in figure 1 (i.e. at the
point DC2 for the configuration in figure 1).
5.1.6 Traffic profile
Definition of Ethernet traffic:
• Bridge mode.
• Random variable packet size distribution from 64 octets to 1 518 octets (bytes).
• Traffic rates limited to 80 % of net activation rate (takes overhead into account).
Traffic shall flow in both directions, but due in case of Upstream and Downstream possible asymmetry, loop-back mode
is not allowed except for Point-to-Point OLT.
5.2 Measurement method for DSLAM/MSAN equipment
In the present document only homogenous configuration are measured. Mixed configuration (e.g. DSLAM with a mix
of ADSL2/2plus, VDSL2 and optical interfaces) are not considered.
5.2.1 Equipment configuration
DSLAM/MSAN equipment shall be configured as defined below. Active lines shall be carrying traffic over an ETSI
loop 1, as defined in ETSI TS 101 388 [1] and ETSI TS 101 271 [3], without any additional noise. The loop length is
dependent on the DSL technology (see Recommendations ITU-T G.992.3 [i.1], G.992.5 [i.2] and G.993.2 [i.3])
activated on the line. The test set-up is as shown in figure 2.
Equipment conditions:
• ADSL2plus configuration:
- Loop length/type: see table 1.
- Full power state is configured as follows:
Common line settings: as defined in BBF TR-100, table 7-1 [9].
General test profile: F-1/0 as defined in BBF TR-100, table 7-2 [9].
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12 Draft ETSI EN 303 215 V1.2.11 (2014-12)
Specific test Profile: A2P_RA_F_30000k as defined in BBF TR-100, table 7-3 [9].
DPBO shall be off.
- Low power state is configured as following:
PMMODE: L2 state enabled (Low power state).
L0-TIME: as defined in BBF TR-100, table B.2-25 [9].
L2-TIME: as defined in BBF TR-100, table B.2-25 [9].
L2-ATPR: 1 dB.
L2-ATPRT: in the range -1 dB to -31 dB. Manufacturer shall declare the minimum L2-ATPRT
value necessary to respect the requirements of table A.1.
NOTE 1: L2-ATPRT parameter defines the total maximum aggregate transmit power reduction that is allowed in
L2 state. As such matching L2 power consumption targets with L2 value close to -1 dB is better (higher
efficient) than matching the same targets but with L2 value close to -31 dB.
L2-MinDatarate: ≥ 128 kbps.
NOTE 2: For real network implementation a reference for the setting can be found in BroadBand Forum documents
TR-202 [i.5], for example L2 ATPRT ≤ 10 dB.
• VDSL2 configuration:
- Loop-length/type: see table 1.
- Common line settings: as defined in BBF TR-114, table 11 [10].
- General line settings: I-8/2 as defined in BBF TR-114, table 12 [10].
- Specific test Profile: RA_I_150_150 as defined in BBF TR-114, table 13 [10].
- Both DPBO and UPBO shall be off.
• VDSL2 configuration with vectoring functionality enabled:
- Loop-length/type: see table 1.
- Common line settings: as defined in BBF TR-114, table 11 [10].
- General line settings: I-8/2 as defined in BBF TR-114, table 12 [10].
- Specific test Profile: RA_I_150_150 as defined in BBF TR-114, table 13 [10].
- Both DPBO and UPBO shall be off.
- The DSLAM is configured for VDSL2 operation with upstream and downstream vectoring enabled on
all its lines. For the configured profile, the DSLAM operates on all its lines at its maximum supported
transmit power and over the widest frequency bands over which it supports vectoring. The DSLAM
operates at its maximum cancellation capabilities in terms of number of cancelled disturbers and of SNR
improvement gained with cancellation.
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13 Draft ETSI EN 303 215 V1.2.11 (2014-12)
Table 1: Loop-lengths for various DSL technologies
Technology Loop length Reference loop Reference document
ADSL2plus 2 500 m ETSI TS 101 388 [1] BBF TR-100, table A.2-19 [9]
loop#1
VDSL2 profile 8a, 8b, 8d 1 200 m ETSI PE04 BBF TR-114,
...
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