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 (08/2014) SERIES L: CONSTRUCTION, INSTALLATION AND PROTECTION OF CABLES AND OTHER ELEMENTS OF OUTSIDE PLANT Energy efficiency metrics and measurement methods for teleco
2、mmunication equipment Recommendation ITU-T L.1310 Rec. ITU-T L.1310 (08/2014) 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, meth
3、odologies and measurement profiles 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
4、 the same class, e.g., equipment 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.
5、1002/1000/12205 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 Rec. ITU-T L.1310 (0
6、8/2014) 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. ITU-T is responsible
7、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 study by the ITU-T st
8、udy 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 a collaborative basi
9、s 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 contain certain mandatory
10、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 requirements. The use
11、 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 Right. ITU takes no p
12、osition 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 intellectual property, pr
13、otected 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 2014 All rights reserved. No par
14、t of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T L.1310 (08/2014) 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 Recommendation . 2 4 Abbreviation
15、s and acronyms 2 5 Conventions 4 6 Metrics definitions 4 6.1 General . 4 6.2 Energy efficiency hierarchy . 4 6.3 Load-proportional efficiency 5 6.4 Metrics robustness 5 6.5 Metrics and equipment modularity . 5 7 General test methodology . 5 7.1 Environmental conditions . 5 7.2 Electrical conditions
16、. 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 technologies 9 10.2
17、 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 . 10 12.1 Metrics f
18、or small networking devices 10 12.2 Test methodologies for small networking devices . 11 13 WDM/TDM/OTN transport MUXes/switches . 11 13.1 Metrics for WDM/TDM/OTN transport MUXes/switches 11 13.2 Test methodologies for WDM/TDM/OTN transport MUXes/switches . 11 14 Converged packet optical equipment 1
19、1 14.1 Metrics for converged packet optical equipment . 11 14.2 Test methodologies for converged packet optical equipment 12 iv Rec. ITU-T L.1310 (08/2014) Page Annex A Metrics and measurement methodologies for converged packet optical equipment with both packet signal and TDM signal functions 13 A.
20、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 efficiency metrics . 18
21、 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 Routers and switches su
22、pporting sleep (stand by) mode 26 II.2 Measurement methodology 27 II.3 Routers and switches supporting explicit power states 27 Bibliography. 28 Rec. ITU-T L.1310 (08/2014) v Introduction In general, energy efficiency is defined as the ratio of two different energy consumption values bearing the sam
23、e 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 Recommendation, energ
24、y 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 telecommunication system
25、 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 metrics, it is typical
26、 to use the measurement of power, rather than energy consumption, as the two quantities are correlated by time. Rec. ITU-T L.1310 (08/2014) 1 Recommendation ITU-T L.1310 Energy efficiency metrics and measurement methods for telecommunication equipment 1 Scope This Recommendation specifies the princi
27、ples 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 small enterprise loc
28、ations. 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 references are subject to
29、 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 to a document within
30、 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 ATIS-0600015.03.2009,
31、 Energy Efficiency for Telecommunications Equipment: Methodology for Measurement and Reporting for Router and Ethernet Switch Products. ETSI ES 203 215 ETSI ES 203 215 V1.2.1 (2011), Environmental Engineering (EE) Measurement Methods and Limits for Power Consumption in Broadband Telecommunication Ne
32、tworks Equipment. ETSI TS 102 706 ETSI TS 102 706 V1.3.1 (2013-07), Environmental Engineering (EE) Measurement method for energy efficiency of wireless access network equipment. ISO 14040 ISO 14040:2006, Environmental management Life cycle assessment Principles and framework. ISO/IEC 17025 ISO/IEC 1
33、7025:2005, General requirements for the competence of testing and calibration laboratories. 3 Definitions 3.1 Terms defined elsewhere None. 2 Rec. ITU-T L.1310 (08/2014) 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 active mode: For small networking
34、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 telecommunication systems, where the primary source of energy is electricity, energy is measu
35、red 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 transmitted, the distance over which it is transported and its rate in Gbit/s. Sometimes the te
36、rm 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 supporting traffic are present) being used, although it is ready to be used (U1 in routers
37、 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 this state, no user-facing LAN ports are connected; the Wi-Fi is active but no clients are
38、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, designed for home/domestic or small office use, with less than 12 ports. This device can hav
39、e 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 ADSL2+ Asymmetric Digital Subscriber Line 2 transceiver extended bandwidth BSC Base Station Co
40、ntroller 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 GEPON Gigabit Ethernet Passive Optical Network GPON Gigabit Passive Optical Network GSM Global
41、 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 (08/2014) 3 MAC Media Access Control MPLS Multiprotocol Label Switching MSAN Multiservice Access Node NNI Network-Network Interface
42、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-Point PF Power Factor PON Passive Optical Network PONIF Passive Optical Network Interface
43、POTS Plain Old Telephone Service PSU Power Supply Unit ROADM Reconfigurable Optical Add-Drop Multiplexer RBS Radio Base Station RNC Radio Network Controller SDH Synchronous Digital Hierarchy SONET Synchronous Optical Network STM Synchronous Transport Module SW Switch TDM Time Division Multiplex TEER
44、 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 Multiplexing WiMAX Worldwide Interoperability for Microwave Access 4 Rec. ITU-T L.1310 (0
45、8/2014) 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. For all practical purposes, it is assumed that telecommunication system devices act as single entiti
46、es, 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 u
47、sed for the same purpose. 6 Metrics definitions 6.1 General The energy efficiency metric is typically defined as the ratio between the functional unit and the energy necessary to deliver the functional unit; the higher the value of the metric, the greater the efficiency of the equipment. The inverse
48、 metric, energy divided by functional unit, could be used as an alternative. The following clauses contain detailed metric definitions and test methodologies for various telecommunication equipment. The energy efficiency rating (EER) is a metric generally defined as a functional unit divided by the
49、energy used. Various types of equipment have their own EER definitions 6.2 Energy efficiency hierarchy An energy efficiency metric can be defined at the network level, the equipment/system level and the component level. In this Recommendation, only metrics at the equipment/system level are considered as mandatory; metrics at the component level are given as suggestions only, and are not mandatory. Metrics at the network level are under study. 6.2.1 Energy efficiency at the network level Network level metrics
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