1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T L.1310 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (07/2017) SERIES L: ENVIRONMENT AND ICTS, CLIMATE CHANGE, E-WASTE, ENERGY EFFICIENCY; CONSTRUCTION, INSTALLATION AND PROTECTION OF CABLES AND OTHER ELEMENTS OF OUTSIDE
2、PLANT Energy efficiency metrics and measurement methods for telecommunication equipment Recommendation ITU-T L.1310 ITU-T L-SERIES RECOMMENDATIONS ENVIRONMENT AND ICTS, CLIMATE CHANGE, E-WASTE, ENERGY EFFICIENCY; CONSTRUCTION, INSTALLATION AND PROTECTION OF CABLES AND OTHER ELEMENTS OF OUTSIDE PLANT
3、 OPTICAL FIBRE CABLES Cable structure and characteristics L.100L.124 Cable evaluation L.125L.149 Guidance and installation technique L.150L.199 OPTICAL INFRASTRUCTURES Infrastructure including node element (except cables) L.200L.249 General aspects and network design L.250L.299 MAINTENANCE AND OPERA
4、TION Optical fibre cable maintenance L.300L.329 Infrastructure maintenance L.330L.349 Operation support and infrastructure management L.350L.379 Disaster management L.380L.399 PASSIVE OPTICAL DEVICES L.400L.429 MARINIZED TERRESTRIAL CABLES L.430L.449 For further details, please refer to the list of
5、ITU-T Recommendations. Rec. ITU-T L.1310 (07/2017) i Recommendation ITU-T L.1310 Energy efficiency metrics and measurement methods for telecommunication equipment Summary Recommendation ITU-T L.1310 contains the definition of energy efficiency metrics test procedures, methodologies and measurement p
6、rofiles required to assess the energy efficiency of telecommunication equipment. Energy efficiency metrics and measurement methods are defined for telecommunication network equipment and small networking equipment. These metrics allow for the comparison of equipment within the same class, e.g., equi
7、pment using the same technologies. The comparison of equipment in different classes is out of the scope of this Recommendation. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T L.1310 2012-11-06 5 11.1002/1000/11639 2.0 ITU-T L.1310 2014-08-22 5 11.1002/1000/12205 3.0 ITU-T L
8、.1310 2017-07-29 5 11.1002/1000/13284 Keywords Energy efficiency, methodology, metrics. * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii
9、Rec. ITU-T L.1310 (07/2017) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. I
10、TU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for s
11、tudy by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on
12、a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contai
13、n certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express r
14、equirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property R
15、ight. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intel
16、lectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2017 All rig
17、hts reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T L.1310 (07/2017) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendatio
18、n . 2 4 Abbreviations and acronyms 2 5 Conventions 3 6 Metrics definitions 4 6.1 General . 4 6.2 Energy efficiency hierarchy . 4 6.3 Load-proportional efficiency 4 6.4 Metrics robustness 5 6.5 Metrics and equipment modularity . 5 7 General test methodology . 5 7.1 Environmental conditions . 5 7.2 El
19、ectrical conditions . 6 7.3 Metrology requirements . 6 8 Reporting format . 6 9 DSLAM, MSAM GPON GEPON equipment 7 9.1 Metric for DSLAM, MSAM GPON GEPON equipment 7 9.2 Equipment test methodologies for broadband access technologies 7 10 Wireless access technologies 8 10.1 Metrics for wireless access
20、 technologies 9 10.2 Tests methodologies for wireless access technologies . 9 11 Routers, Ethernet switches 9 11.1 Metrics for routers and Ethernet switches 9 11.2 Tests methodologies for routers and packet switches (Ethernet, MPLS, etc.) . 10 12 Energy efficiency metric for small networking devices
21、 . 11 12.1 Metrics for small networking devices 11 12.2 Test methodologies for small networking devices . 11 13 WDM/TDM/OTN transport MUXes/switches . 12 13.1 Metrics for WDM/TDM/OTN transport MUXes/switches 12 13.2 Test methodologies for WDM/TDM/OTN transport MUXes/switches . 12 14 Converged packet
22、 optical equipment 12 14.1 Metrics for converged packet optical equipment . 12 14.2 Test methodologies for converged packet optical equipment 12 iv Rec. ITU-T L.1310 (07/2017) Page Annex A Metrics and measurement methodologies for converged packet optical equipment with both packet signal and TDM si
23、gnal functions 13 A.1 Equipment definition 13 A.2 Energy efficiency metrics . 15 A.3 Measurement methodology 16 Annex B Metrics and measurement methodologies for converged packet optical equipment with packet signal, TDM signal and WDM signal functions . 18 B.1 Equipment definition 18 B.2 Energy eff
24、iciency metrics . 18 B.3 Measurement methodology 21 Appendix I Alternative metrics for wireline access technologies . 24 I.1 DSLAM and MSAN network equipment . 24 I.2 GPON OLT network equipment 25 I.3 GEPON OLT network equipment 25 Appendix II Alternative metrics for routers and switches 26 II.1 Rou
25、ters and switches supporting sleep (standby) mode . 26 II.2 Measurement methodology 27 II.3 Routers and switches supporting explicit power states 27 Bibliography. 28 Rec. ITU-T L.1310 (07/2017) v Introduction In general, energy efficiency is defined as the ratio of two different energy consumption v
26、alues bearing the same functional unit (i.e., the ratio of useful work (energy) to total work (energy). This definition is not easily applied to a telecommunication system, as it does not consider the telecommunication performance of the equipment being measured. Therefore, for the purposes of this
27、Recommendation, energy efficiency will be defined as the relationship between the specific functional unit for a piece of equipment (i.e., the useful work of telecommunications) and the energy consumption of that equipment. For example, when transmission time and frequency bandwidth are fixed, a tel
28、ecommunication system that can transport more data (in bits) with less energy (in joules) is considered to be more energy efficient. For this reason, metrics that can evaluate the performance of a piece of equipment against its energy consumption are to be defined. To facilitate the measurement of m
29、etrics, it is typical to use the measurement of power, rather than energy consumption, as the two quantities are correlated by time. Rec. ITU-T L.1310 (07/2017) 1 Recommendation ITU-T L.1310 Energy efficiency metrics and measurement methods for telecommunication equipment 1 Scope This Recommendation
30、 specifies the principles and concepts of energy efficiency metrics and measurement methods for telecommunication network equipment. This Recommendation also specifies the principles and concepts of energy efficiency metrics and measurement methods for small networking equipment used in the home and
31、 small enterprise locations. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other refe
32、rences are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference
33、 to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ATIS-0600015.02.2009 ATIS-0600015.02.2009, Energy Efficiency for Telecommunication Equipment: Methodology for Measurement and Reporting Transport Requirements. ATIS-0600015.03.2013
34、ATIS-0600015.03.2009, Energy Efficiency for Telecommunications Equipment: Methodology for Measurement and Reporting for Router and Ethernet Switch Products. ETSI EN 303 215 ETSI EN 303 215 V1.3.1 (2015), Environmental Engineering (EE) Measurement methods and limits for power consumption in Broadband
35、 telecommunication networks equipment. ETSI ES 202 706-1 ETSI ES 202 706-1 V1.5.0 (2016), Environmental Engineering (EE); Metrics and measurement method for energy efficiency of wireless access network equipment; Part 1: Power Consumption - Static Measurement Method. ISO 14040 ISO 14040:2006, Enviro
36、nmental management Life cycle assessment Principles and framework. ISO/IEC 17025 ISO/IEC 17025:2005, General requirements for the competence of testing and calibration laboratories. 3 Definitions 3.1 Terms defined elsewhere None. 2 Rec. ITU-T L.1310 (07/2017) 3.2 Terms defined in this Recommendation
37、 This Recommendation defines the following terms: 3.2.1 active mode: For small networking equipment, this is the operational mode where all ports (WAN and LAN) are connected, with at least one Wi-Fi connection, if a Wi-Fi function is available. 3.2.2 energy: “The capacity for doing work“. In the tel
38、ecommunication systems, where the primary source of energy is electricity, energy is measured in joules. 3.2.3 functional unit (based on ISO 14040): A performance representation of the system under analysis. For example, for transport equipment, the functional unit is the amount of information trans
39、mitted, the distance over which it is transported and its rate in Gbit/s. Sometimes the term is used to indicate useful output or work. 3.2.4 idle mode: For small networking equipment, this means the same as active mode, but with no user data traffic (it is not zero traffic, as service and protocol
40、supporting traffic are present) being used, although it is ready to be used (U1 in routers part). 3.2.5 low power (sleep) mode: For small networking equipment, this means a state that happens after the device detects no user activity for a certain period of time and reduces energy consumption. For t
41、his state, no user-facing LAN ports are connected; the Wi-Fi is active but no clients are connected. The WAN port may be inactive. The device will reactivate on detecting a connection from a user port or device. 3.2.6 small networking device: A networking device with fixed hardware configuration, de
42、signed for home/domestic or small office use, with less than 12 ports. This device can have wireless functionality implemented. Wireless functionality is not considered a port. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: AC Alternating Current ADSL
43、2+ Asymmetric Digital Subscriber Line 2 transceiver extended bandwidth BSC Base Station Controller BTS Base Transceiver Station CDMA Code Division Multiple Access DC Direct Current DSLAM Digital Subscriber Line Access Multiplexer EDGE Enhanced Data for GSM Evolution EER Energy Efficiency Rating GEPO
44、N Gigabit Ethernet Passive Optical Network GPON Gigabit Passive Optical Network GSM Global System for Mobile Communications HSPA High Speed Packet Access IF Interface IMIX Internet MIX traffic LAN Local Area Network LTE Long Term Evolution Rec. ITU-T L.1310 (07/2017) 3 MAC Media Access Control MPLS
45、Multiprotocol Label Switching MSAN Multiservice Access Node NNI Network-Network Interface OADM Optical Add-Drop Multiplexer OC Optical Carrier OLT Optical Line Termination ONT Optical Network Termination OTN Optical Transport Network OTU Optical Transport Unit OXC Optical Cross Connect P2P Point-to-
46、Point PF Power Factor PON Passive Optical Network PONIF Passive Optical Network Interface POTS Plain Old Telephone Service PSU Power Supply Unit RBS Radio Base Station RNC Radio Network Controller ROADM Reconfigurable Optical Add-Drop Multiplexer SDH Synchronous Digital Hierarchy SONET Synchronous O
47、ptical Network STM Synchronous Transport Module SW Switch TDM Time Division Multiplex TEER Telecommunications Energy Efficiency Ratio UNI User Network Interface VDSL2 Very high bit rate Digital Subscriber Line WAN Wide Area Network WCDMA Wideband Code Division Multiple Access WDM Wavelength Division
48、 Multiplexing WiMAX Worldwide Interoperability for Microwave Access 5 Conventions In this Recommendation, the term “energy consumption“ is used to describe the transformation of input energy into the functional unit and waste within telecommunication systems. 4 Rec. ITU-T L.1310 (07/2017) For all pr
49、actical purposes, it is assumed that telecommunication system devices act as single entities, with metrics estimating the total efficiency of input energy within the entire telecommunication device. In this Recommendation, the term “energy efficiency“ is used to describe the ability of a telecommunication system to minimize energy waste, although “power efficiency“ could also have been used for the same purpose. 6 Metrics definitions 6.1 General The energy efficiency metric is typically defined as the ratio between
