1、 International Telecommunication Union ITU-T L.1340TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2014) SERIES L: CONSTRUCTION, INSTALLATION AND PROTECTION OF CABLES AND OTHER ELEMENTS OF OUTSIDE PLANT Informative values on the energy efficiency of telecommunication equipment Recommendation ITU
2、-T L.1340 Rec. ITU-T L.1340 (02/2014) i Recommendation ITU-T L.1340 Informative values on the energy efficiency of telecommunication equipment Summary Recommendation ITU-T L.1340 provides informative values on the energy efficiency of different types of telecommunication network equipment and small
3、networking equipment in use in both the fixed and mobile networks. These values are related to energy efficiency metrics, test procedures, methodologies and measurement profiles that have been defined in Recommendation ITU-T L.1310. These informative values are intended to be a valued reference reso
4、urce for those in the process of choosing the most energy-efficient technologies for network upgrade and deployment and, in so doing, reducing the carbon footprint of the Information and Communication Technology (ICT) sector. History Edition Recommendation Approval Study Group Unique ID*1.0 ITU-T L.
5、1340 2014-02-13 5 11.1002/1000/12137 Keywords Energy efficiency, informative values, 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/11.100
6、2/1000/11830-en. ii Rec. ITU-T L.1340 (02/2014) 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 perma
7、nent organ of ITU. ITU-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, establis
8、hes the topics for study 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 standa
9、rds are prepared on 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 Recom
10、mendation may contain 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 a
11、re used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed In
12、tellectual Property Right. 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 rec
13、eived notice of intellectual 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/i
14、pr/. ITU 2014 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T L.1340 (02/2014) iii Table of Contents Page 1 Scope 1 2 References. 1 3 Definitions 2 3.1 Terms defined elsewhere 2 3.2 Terms defined in
15、this Recommendation . 2 4 Abbreviations and acronyms 2 5 Conventions 4 6 Digital subscriber line access multiplexer, multi-service access node and optical line termination equipment . 4 6.1 Informative values for digital subscriber line access multiplexer (DSLAM), multi-service access code (MSAN) an
16、d optical line termination (OLT) equipment 4 7 Wireless access technologies 7 7.1 Informative values for wireless access technologies 7 8 Routers and Ethernet switches 8 8.1 Informative values for routers and Ethernet switches . 8 9 Energy efficiency metric for small networking devices . 10 9.1 Info
17、rmative values for small networking devices 10 Appendix I Alternative informative values for wireline access technologies 12 I.1 Informative values for DSLAM and MSAN network equipment 12 I.2 Informative values for OLT network equipment 13 Appendix II Examples of calculation of EER for specific rout
18、ers and switches 15 Bibliography. 17 iv Rec. ITU-T L.1340 (02/2014) Introduction The growing demand for Internet connections from both governments and citizens is driving the rapid increase in worldwide deployment of broadband and ultra-broadband networks. Depending on the specific geographic, demog
19、raphic and economic conditions, such networks can be either fixed (based on FTTx architectures and implementing technologies such as ADSL, ADSL2plus, VDSL2, GPON, GEPON, etc.) or mobile (based on HSPA, LTE, UMTS, etc.) (see Note). The increasing deployment of broadband and ultra-broadband networks h
20、as a real impact on energy consumption and, in more general terms, on the carbon footprint. To address the critical issue of energy efficiency, it is essential that particular attention be given to the choice of specific technologies during the planning phase. An informed choice of available energy-
21、efficient telecommunication equipment is fundamental to reducing energy consumption while guaranteeing the desired level of quality of service (QoS) and reliability. Recommendation ITU-T L.1340 provides informative values on the energy efficiency of different types of telecommunication network equip
22、ment and small networking equipment used in both the fixed and mobile networks. Such informative values are intended to provide a basic understanding of the energy efficiency performance of different equipment currently available and therefore serve as a useful resource in the upgrading and deployme
23、nt of green broadband networks. The informative values that are reported in this Recommendation are related to energy efficiency metrics, test procedures, methodologies and measurement profiles that have been defined in Recommendation ITU-T L.1310. NOTE See clause 4 for expanded meanings of abbrevia
24、tions and acronyms. Rec. ITU-T L.1340 (02/2014) 1 Recommendation ITU-T L.1340 Informative values on the energy efficiency of telecommunication equipment 1 Scope This Recommendation defines a set of informative values for telecommunication network equipment and small networking equipment used in the
25、home and small enterprise locations. The goal is to provide useful information to support a fast deployment of energy-efficient broadband and ultra-broadband networks. Such informative values refer to the metrics, test procedures, methodologies and measurement profiles that have been defined in ITU-
26、T L.1310. 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
27、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 to a document with
28、in this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T L.1310 Recommendation ITU-T L.1310 (2012), Energy efficiency metrics and measurement methods for telecommunication equipment. ATIS-0600015.02.2009 ATIS-06000 (2009), Energy Efficiency for Teleco
29、mmunication Equipment: Methodology for Measurement and Reporting Transport Requirements. ATIS-0600015.03.2009 ATIS-06000 (2009), Energy Efficiency for Telecommunications Equipment: Methodology for Measurement and Reporting for Router and Ethernet Switch Products. ETSI TS 102 706 ETSI TS 102 706 V1.2
30、.1 (2011), Environmental Engineering (EE) Measurement method for Energy Efficiency of Wireless Access Network Equipment. 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 Networks Equipmen
31、t. IEEE 1904.1 IEEE standard 1904.1-2013, Service Interoperability in Ethernet Passive Optical Networks (SIEPON). ISO 14040 ISO 14040:2006, Environmental management Life cycle assessment Principles and framework. ISO/IEC 17025 ISO/IEC 17025:2005, General requirements for the competence of testing an
32、d calibration laboratories. 2 Rec. ITU-T L.1340 (02/2014) 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: Terms defined in ITU-T L.1310: 3.1.1 active mode: For small networking equipment, this is the operational mode where all ports (WAN and
33、LAN) are connected, with at least one Wi-Fi connection, if a Wi-Fi function is available. 3.1.2 energy: “The capacity for doing work“. In the telecommunication systems, where the primary source of energy is electricity, energy is measured in Joules. 3.1.3 energy efficiency metric: Ratio between the
34、functional unit and the energy necessary to deliver the functional unit. The higher the value of the metric is, the higher the efficiency of the equipment is. 3.1.4 idle mode: For small networking equipment, this means the same as active mode, but with no user data traffic (it is not zero traffic, a
35、s service and protocol supporting traffic are present) being used, although it is ready to be used (U1 in routers part). 3.1.5 line rate/speed: For small network equipment, this is the maximum possible number of transmitted/received bits per second. 3.1.6 load-proportional metric: A metric which is
36、related to equipment that operates under variable-load conditions, where the measured value of the functional unit can fluctuate based on user demand. 3.1.7 low power (sleep) mode: For small networking equipment, this means a state that happens after the device detects no user activity for a certain
37、 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 connected. The WAN port may be inactive. The device will reactivate on detecting a connection from a user port or device. 3.1.8 small networking device: A ne
38、tworking device with fixed hardware configuration, designed 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. 3.1.9 throughput: For small network equipment, this is the maximum non
39、-drop data rate between WAN and LAN port in ingress direction 3.1.10 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 tran
40、sported and its rate in Gbit/s. Sometimes the term is used to indicate useful output or work. 3.2 Terms defined in this Recommendation None. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: AC Alternating Current ADSL2plus Asymmetric Digital Subscriber
41、Line 2 transceiver extended bandwidth BS Base Station Rec. ITU-T L.1340 (02/2014) 3 BSC Base Station Controller BTS Base Transceiver Station CDMA Code Division Multiple Access DC Direct Current DSL Digital Subscriber Line DSLAM Digital Subscriber Line Access Multiplexer EDGE Enhanced Data for GSM Ev
42、olution EER Energy Efficiency Rating FTTx Fibre To The x- where x stands for the final location on the end-user side G-EPON Gigabit Ethernet Passive Optical Network G-PON Gigabit-capable Passive Optical Network GSM Global System for Mobile Communications HSPA High Speed Packet Access ICT Information
43、 and Communication Technology IMIX Internet MIX traffic LAN Local Area Network LTE Long Term Evolution MPLS Multi-Protocol Label Switching MSAN Multi Service Access Node NNI Network-Network Interface OLT Optical Line Termination ONT Optical Network Termination OTN Optical Transport Network P2P Point
44、-to-Point PF Power Factor PON Passive Optical Network POTS Plain Old Telephone Service PSU Power Supply Unit PtP Point-to-Point RBS Radio Base Station RNC Radio Network Controller SIEPON Service Interoperability in Ethernet Passive Optical Networks TDM Time Division Multiplex UMTS Universal Mobile T
45、elecommunications Service UNI User Network Interface UUT Unit Under Test VDSL2 Very high bit rate Digital Subscriber Line 4 Rec. ITU-T L.1340 (02/2014) WAN Wide Access Network WCDMA Wideband Code Division Multiple Access WDM Wavelength Division Multiplexing WiMAX Worldwide Interoperability for Micro
46、wave Access 5 Conventions Throughout this Recommendation, it is preferred to use the terms: “energy consumption“ to describe the transformation of input energy into the functional unit and waste within telecommunication systems; “energy efficiency“ to describe the ability of a telecommunication syst
47、em to minimize energy waste, although the term “power efficiency“ can be used to convey the same meaning. For all practical purposes, it is assumed that telecommunication system devices act as single entities, with metrics estimating the total efficiency of input energy within the entire telecommuni
48、cation device. 6 Digital subscriber line access multiplexer, multi-service access node and optical line termination equipment 6.1 Informative values for digital subscriber line access multiplexer (DSLAM), multi-service access code (MSAN) and optical line termination (OLT) equipment This clause defin
49、es the informative values with respect to the energy efficiency metrics defined for the specific technologies used by DSLAM, MSAN and OLT equipment. More precisely, this clause covers the: DSLAM equipment and MSAN equipment implementing ADSL2plus, VDSL2 and POTS technologies OLT equipment implementing the gigabit passive optical network (GPON), gigabit Ethernet passive optical network (GEPON) and point-to-point (PtP) technologies. For these equipment typologies, the most commonly used metric is the Pport,
