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.1331 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (04/2017) SERIES L: ENVIRONMENT AND ICTS, CLIMATE CHANGE, E-WASTE, ENERGY EFFICIENCY; CONSTRUCTION, INSTALLATION AND PROTECTION OF CABLES AND OTHER ELEMENTS OF OUTSIDE
2、PLANT Assessment of mobile network energy efficiency Recommendation ITU-T L.1331 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 OPTICAL FIBRE CABLES Cable structu
3、re 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 OPERATION Optical fibre cable maintenanc
4、e 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 ITU-T Recommendations. Rec. ITU-T L
5、.1331 (04/2017) i Recommendation ITU-T L.1331 Assessment of mobile network energy efficiency Summary Recommendation ITU-T L.1331 aims to provide a better understanding of the energy efficiency of mobile networks. The focus of this Recommendation is on the metrics and methods of assessing energy effi
6、ciency in operational networks. The networks considered are those whose size and scale could be defined by topologic, geographic or demographic boundaries. This Recommendation explains how to extrapolate the measurements made on partial networks to the level of the total network. Such a simplified a
7、pproach is proposed as a way of making approximate energy efficiency evaluations at the level of network elements, and cannot therefore be considered sufficient for the entire network operation including, for example, transport. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-
8、T L.1331 2017-04-06 5 11.1002/1000/13147 Keywords Energy efficiency, metrics, mobile, networks. * 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
9、-en. ii Rec. ITU-T L.1331 (04/2017) 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 o
10、f 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, establishes the topi
11、cs 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 standards are prep
12、ared 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 Recommendation ma
13、y 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 are used to e
14、xpress requirements. 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 Pr
15、operty 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 received notice
16、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/ipr/. ITU 2017
17、 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.1331 (04/2017) 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 this Recom
18、mendation . 3 4 Abbreviations and acronyms 3 5 Conventions 5 6 Network under test definition . 5 6.1 Introduction 5 6.2 Test parameter categorization . 7 6.3 Network classification 7 7 Metrics for energy efficiency assessment . 10 7.1 Introduction 10 7.2 Energy consumption metrics 10 7.3 Performance
19、 metrics . 12 7.4 Mobile network energy efficiency metrics . 13 8 Measurement of energy efficiency . 13 8.1 Introduction 13 8.2 Time duration of the measurement . 13 8.3 Measurement procedures 14 9 Extrapolation for overall networks . 18 9.1 Extrapolation approach . 18 9.2 Extrapolation method . 19
20、9.3 Extrapolation reporting tables 20 10 Assessment report . 21 10.1 Introduction of assessment report . 21 10.2 Report of network area under test 22 10.3 Report of sites under test 23 10.4 Report of site measurement 25 11 Implementation guidelines 26 Appendix I Implementation examples 28 I.1 Implem
21、entation examples . 28 I.2 Examples of reporting data . 28 Appendix II Cloud RAN energy efficiency 34 II.1 Generic CRAN architecture layout and definitions 34 II.2 Energy consumption and efficiency assessment 35 Bibliography. 36 iv Rec. ITU-T L.1331 (04/2017) Introduction Recommendation ITU-T L.1331
22、 considers the definition of metrics and methods used to measure energy efficiency performance of mobile radio access networks and adopts an approach based on the measurement of such performance on small networks, for feasibility and simplicity purposes. Such a simplified approach is proposed for ap
23、proximating energy efficiency evaluations and cannot be considered as a reference for planning evaluation purposes throughout the network operation process. The same approach was introduced in ETSI TR 103 117; the measurements in testing laboratories of the efficiency of the base stations is the top
24、ic treated in ETSI ES 202 706. The measurement of this performance is useful for many reasons, and implementation guidelines are given in clause 11. Recommendation ITU-T L.1331 also provides an extrapolation method to extend the applicability of the assessment of energy efficiency to wider networks.
25、 The general outcome of the application of the method specified is based on the “Assessment report“ introduced in clause 10. An example of an application of the method is given for better readability and ease of use in Appendix I. Recommendation ITU-T L.1331 was developed jointly by ETSI TC EE and I
26、TU-T Study Group 5 and published by ITU and ETSI as Recommendation ITU-T L.1331 and ETSI Standard ETSI ES 203 228 respectively, which are technically equivalent. Rec. ITU-T L.1331 (04/2017) 1 Recommendation ITU-T L.1331 Assessment of mobile network energy efficiency 1 Scope This Recommendation aims
27、to provide a better understanding of the energy efficiency of mobile networks. The focus of this Recommendation is on metrics for energy efficiency and methods of assessing (and measuring) energy efficiency in operational networks. This Recommendation defines the topology and level of analysis neede
28、d to assess the energy efficiency. The analysis includes radio base stations, backhauling systems, radio controllers (RCs) and other infrastructure radio site equipment. The technologies involved are global system for mobile communication (GSM), universal mobile telecommunications service (UMTS) and
29、 long term evolution (LTE) (including LTE advanced (LTE-A). Both homogeneous and heterogeneous networks are considered, whose size and scale could be defined by topologic, geographic or demographic boundaries. An example of a network defined by topologic boundaries consists of a control node (whenev
30、er applicable), its supported access nodes and related network elements. Networks could also be defined by geographic boundaries, such as city-wide, national or continental, or they could be defined by demographic boundaries, such as urban or rural networks. This Recommendation also applies to so-ca
31、lled “partial“ networks, where energy efficiency is measured in some recommended way. The specification extends the measurements made in partial networks to the wider, so-called “total“ network energy efficiency estimation, such as the network in a geographical area, the network in an entire country
32、 or the network of a mobile network operator (MNO). Terminal (end-user) equipment is outside the scope of this Recommendation and is not considered in the energy efficiency measurement. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference
33、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 revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recen
34、t 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 this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T L.1330 Recommendat
35、ion ITU-T L.1330 (2015), Energy efficiency measurement and metrics for telecommunication networks. ITU-T Q.1742.1 Recommendation ITU-T Q.1742.1 (2002), IMT-2000 references to ANSI-41 evolved core network with cdma2000 access network. ETSI ES 202 336-12 ETSI ES 202 336-12 V1.1.1 (2015), Environmental
36、 Engineering; Monitoring and control interface for infrastructure equipment (power, cooling and building environment systems used in telecommunications networks); Part 12: ICT equipment power, energy and environmental parameters monitoring information model. 2 Rec. ITU-T L.1331 (04/2017) ETSI TS 123
37、 203 ETSI TS 123 203 V12.7.0 (2015), Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Policy and charging control architecture (3GPP TS 23.203 version 12.7.0 Release 12). ETSI TS 125 104 ETSI TS 125 104 V11.3.0 (2012), Universal Mobile Te
38、lecommunications System (UMTS); Base Station (BS) radio transmission and reception (FDD) (3GPP TS 25.104 version 11.3.0 Release 11). ETSI TS 132 405 ETSI TS 132 405 V11.1.1 (2013), Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Telecomm
39、unication management; Performance Management (PM); Performance measurements; Universal Terrestrial Radio Access Network (UTRAN) (3GPP TS 32.405 version 11.1.1 Release 11). ETSI TS 132 412 ETSI TS 132 412 V11.1.0 (2013), Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecomm
40、unications System (UMTS); LTE; Telecommunication management; Performance Management (PM) Integration Reference Point (IRP): Information Service (IS) (3GPP TS 32.412 version 11.1.0 Release 11). ETSI TS 132 425 ETSI TS 132 425 V12.0.0 (2014), LTE; Telecommunication management; Performance Management (
41、PM); Performance measurements Evolved Universal Terrestrial Radio Access Network (E-UTRAN) (3GPP TS 32.425 version 12.0.0 Release 12). ETSI TS 136 104 ETSI TS 136 104 V11.2.0 (2012), LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) radio transmission and reception (3GPP TS
42、 36.104 version 11.2.0 Release 11). ETSI TS 136 314 ETSI TS 136 314 V11.1.0 (2013), LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Layer 2 Measurements (3GPP TS 36.314 version 11.1.0 Release 11). ETSI TS 152 402 ETSI TS 152 402 V11.0.0 (2012), Digital cellular telecommunications system (P
43、hase 2+); Telecommunication management; Performance Management (PM); Performance measurements GSM (3GPP TS 52.402 version 11.0.0 Release 11). ISO/IEC 17025 ISO/IEC 17025:2005, General requirements for the competence of testing and calibration laboratories. 3 Definitions 3.1 Terms defined elsewhere T
44、his Recommendation uses the following terms defined elsewhere: 3.1.1 backhaul equipment: See ITU-T L.1330 3.1.2 base station U: See ITU-T L.1330 3.1.3 distributed RBS: See ITU-T L.1330 3.1.4 energy efficiency (EE): See ITU-T L.1330 3.1.5 energy saving feature: See ITU-T L.1330 3.1.6 integrated BS: S
45、ee ITU-T L.1330 3.1.7 mobile network (MN): See ITU-T L.1330 Rec. ITU-T L.1331 (04/2017) 3 3.1.8 mobile network coverage energy efficiency: See ITU-T L.1330 3.1.9 mobile network data energy efficiency: See ITU-T L.1330 3.1.10 mobile network energy consumption: See ITU-T L.1330 3.1.11 mobile network e
46、nergy efficiency: See ITU-T L.1330 3.1.12 mobile network operator (MNO): See ITU-T L.1330 3.1.13 mobile network operator penetration ratio: See ITU-T L.1330 3.1.14 mobile network performance delivered: See ITU-T L.1330 3.1.15 power consumption: See ITU-T L.1330 3.1.16 radio access network: See ITU-T
47、 Q.1742.1 3.1.17 telecommunication network: See ITU-T L.1330 3.1.18 virtualized network function (VNF) b-ETSI GS NFV 003: Implementation of an NF that can be deployed on a Network Function Virtualisation Infrastructure (NFVI). 3.2 Terms defined in this Recommendation This Recommendation defines the
48、following term: 3.2.1 site energy efficiency (SEE): A metric used to determine the energy efficiency of a telecom site. SEE is defined by the ratio of “IT equipment energy“ and “Total site energy“, which generally includes rectifiers, cooling, storage, security and IT equipment. 4 Abbreviations and
49、acronyms This Recommendation uses the following abbreviations and acronyms: 3GPP 3G (mobile) Partnership Project BH Backhaul BS Base Station CC Central Cloud CoA Coverage Area CoA_geo total geographical area under investigation and within the operators license agreement CoA_des designated coverage area as designed by network planning CoA_qdes quality factor describing how well users are covered within the coverage area CR Coverage Ratio CRAN Cloud Radio Access Network CS Circuit Swi
