1、 International Telecommunication Union ITU-T G.9903TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (08/2017) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Access networks In premises networks Narrowband orthogonal frequency division multiplexing power line communication tran
2、sceivers for G3-PLC networks Recommendation ITU-T G.9903 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSION SYSTEMS G.200G.299 INDI
3、VIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES G.300G.399 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES G.400G.449 COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.4
4、50G.499 TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600G.699 DIGITAL TERMINAL EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900G.999 MULTIMEDIA QUALITY OF SERVICE AND PERFORMANCE GENERIC AND USER-RELATED ASPECTS G.1000G.1999 TRANSMISSION ME
5、DIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS G.7000G.7999 PACKET OVER TRANSPORT ASPECTS G.8000G.8999 ACCESS NETWORKS G.9000G.9999 Metallic access networks G.9700G.9799 Optical line systems for local and access networks G.9800G.9899 In premises networks G.9900G.9999For further
6、 details, please refer to the list of ITU-T Recommendations. Rec. ITU-T G.9903 (08/2017) i Recommendation ITU-T G.9903 Narrowband orthogonal frequency division multiplexing power line communication transceivers for G3-PLC networks Summary Recommendation ITU-T G.9903 contains the physical layer (PHY)
7、 and data link layer (DLL) specification for the G3-PLC narrowband orthogonal frequency division multiplexing (OFDM) power line communication transceivers, for communications via alternating current and direct current electric power lines over frequencies below 500 kHz. The control parameters that d
8、etermine spectral content, power spectral density (PSD) mask requirements, and the set of tools and procedures to support the measurement and reduction of the transmit PSD can be found in Recommendation ITU-T G.9901. This Recommendation adds several corrections of and improvements to the PHY, the DL
9、L, and the routing parts of the specification. It also integrates Amendment 1 to Recommendation ITU-T G.9903 (2014), adding support for coexistence with other narrowband PLC technologies via the preamble-based coexistence mechanism specified in clause 10 of IEEE 1901.2. History Edition Recommendatio
10、n Approval Study Group Unique ID*1.0 ITU-T G.9903 2012-10-29 15 11.1002/1000/11823 1.1 ITU-T G.9903 (2012) Amd. 1 2013-05-07 15 11.1002/1000/11897 2.0 ITU-T G.9903 2013-05-07 15 11.1002/1000/12049 3.0 ITU-T G.9903 2014-02-22 15 11.1002/1000/12088 3.1 ITU-T G.9903 (2014) Amd. 1 2015-08-13 15 11.1002/
11、1000/12539 4.0 ITU-T G.9903 2017-08-13 15 11.1002/1000/13333 Keywords Narrowband power line communications, G3-PLC, OFDM, PHY, physical layer, MAC medium access control, routing, LOADng _ *To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, foll
12、owed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T G.9903 (08/2017) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technolog
13、ies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent 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 Telecommun
14、ication Standardization Assembly (WTSA), which meets every four years, establishes 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 o
15、f information technology which fall within ITU-Ts purview, the necessary standards 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 operati
16、ng agency. Compliance with this Recommendation is voluntary. However, the Recommendation 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“
17、or some other obligatory language such as “must“ and the negative equivalents are 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 practi
18、ce or implementation of this Recommendation may involve the use of a claimed Intellectual 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 developm
19、ent process. As of the date of approval of this Recommendation, ITU had received 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 str
20、ongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2017 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 G.9903 (08/2017) iii Table of Contents Page 1 Scope 1 2 Refere
21、nces. 1 3 Conventions and definitions . 2 3.1 Conventions 2 3.2 Terms defined elsewhere 2 3.3 Terms defined in this Recommendation . 2 4 Abbreviations and acronyms 3 5 Introduction to OFDM and the power line channel 5 6 General description . 6 6.1 Overall infrastructure 6 6.2 Coexistence with other
22、PLC networks . 7 7 Physical layer specification 8 7.1 Introduction 8 7.2 System parameters 9 7.3 Data rate, Reed-Solomon block size and maximum PSDU length 9 7.4 Frame structure . 15 7.5 Preamble . 16 7.6 Frame control header 18 7.7 Payload of PHY frame 22 7.8 Scrambler 22 7.9 FEC coding . 23 7.10 I
23、nterleaver . 25 7.11 Mapping for DBPSK/DQPSK/D8PSK. 30 7.12 Frequency domain pre-emphasis 32 7.13 OFDM generation (IFFT and CP addition) 32 7.14 Windowing . 32 7.15 Tone masking and tone mapping 33 7.16 Coherent modulation scheme . 34 7.17 PHY primitives . 40 8 Transmitter specifications . 50 8.1 Ou
24、tput level measurement 50 8.2 Transmit spectrum mask . 50 8.3 Transmitter attenuation . 50 8.4 Spurious transmission . 50 8.5 System clock frequency tolerance 50 8.6 Transmitter spectral flatness . 52 8.7 Crossing MV/LV transformer 52 iv Rec. ITU-T G.9903 (08/2017) Page 8.8 MV coupler (informative)
25、52 8.9 AC phase detection . 54 9 Data link layer specifications 56 9.1 Introduction 56 9.2 Conventions 56 9.3 MAC sublayer specification . 56 9.4 IPv6 adaptation sublayer specifications . 104 9.5 Functional description 165 10 Security . 166 10.1 Access control and authentication 166 10.2 Confidentia
26、lity and integrity . 168 10.3 Anti-replay and DoS prevention . 168 10.4 Authentication and key distribution protocol Selections from IETF RFC 3748 169 10.5 EAP method 170 Annex A Protocol implementation conformance statement . 175 A.1 Overview 175 A.2 PICS proforma tables . 175 Annex B Routing cost
27、. 178 B.1 Composite metric method . 178 Annex C Device starting sequence of messages . 180 Annex D The lightweight on-demand Ad hoc distance-vector routing protocol next generation (LOADng) . 181 D.1 Introduction 181 D.2 Terminology and notation 181 D.3 Applicability statement . 182 D.4 Protocol ove
28、rview and functioning 182 D.5 Protocol parameters 185 D.6 Protocol message content . 186 D.7 Information base . 188 D.8 LOADng router sequence numbers 190 D.9 Route maintenance . 191 D.10 Unidirectional link handling . 191 D.11 Common rules for RREQ and RREP messages . 192 D.12 Route requests (RREQs
29、) . 195 D.13 Route replies (RREPs) 196 D.14 Route errors (RERRs) . 199 D.15 Route reply acknowledgments (RREP_ACKs) 201 D.16 Metrics 202 Rec. ITU-T G.9903 (08/2017) v Page D.17 Security considerations . 202 Annex E Commissioning in 6LoWPAN . 205 E.1 Introduction 205 E.2 Terminology . 205 E.3 Bootstr
30、apping . 207 E.4 IANA consideration 214 E.5 Security considerations . 214 Annex F Regional requirements for Japan 215 F.1 Overview 215 F.2 Physical layer specifications for ARIB bandplan . 215 F.3 Data link layer specifications . 216 Annex G Regional requirements for the USA 217 Appendix I Examples
31、on encoding and decoding . 218 I.1 Example for data encoding . 218 I.2 Example for data decoding . 218 Appendix II Test vectors for cryptographic building blocks 219 II.1 Introduction 219 Bibliography. 221 Rec. ITU-T G.9903 (08/2017) 1 Recommendation ITU-T G.9903 Narrowband orthogonal frequency divi
32、sion multiplexing power line communication transceivers for G3-PLC networks 1 Scope Recommendation ITU-T G.9903 contains the physical layer (PHY) and data link layer (DLL) specification for the G3-PLC narrowband orthogonal frequency division multiplexing (OFDM) power line communication transceivers,
33、 for communications via alternating current and direct current electric power lines over frequencies below 500 kHz. This Recommendation supports indoor and outdoor communications over low-voltage lines, medium-voltage lines, through transformer low-voltage to medium-voltage and through transformer m
34、edium-voltage to low-voltage power lines in both urban and long distance rural communications. This Recommendation addresses grid to utility meter applications, advanced metering infrastructure (AMI), and other Smart Grid applications such as the charging of electric vehicles, home automation, and h
35、ome area networking (HAN) communications scenarios. This Recommendation supports coexistence with other narrowband PLC technologies via frequency division and via the preamble-based coexistence mechanism specified in clause 10 of IEEE 1901.2. This Recommendation does not contain the control paramete
36、rs that determine spectral content, power spectral density (PSD) mask requirements and the set of tools and procedures to support the reduction and measurement of the transmit PSD; all of which are detailed in Recommendation ITU-T G.9901. 2 References The following ITU-T Recommendations and other re
37、ferences 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 revision; users of this Recommendation are therefore encouraged to i
38、nvestigate 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 this Recommendation does not give it, as a stand-alone document, the
39、 status of a Recommendation. ITU-T G.9901 Recommendation ITU-T G.9901 (2014), Narrowband orthogonal frequency division multiplexing power line communication transceivers Power spectral density specification. ITU-T G.9905 Recommendation ITU-T G.9905 (2013), Centralized metric-based source routing. AR
40、IB STD-T84 ARIB STD-T84, Power Line Communication Equipment (10kHz 450kHz). CISPR16-1-2 International Electrotechnical Commission, CISPR 16-1-2:2014, Specification for radio disturbance and immunity measuring apparatus and methods Part 1-2: Radio disturbance and immunity measuring apparatus Coupling
41、 devices for conducted disturbance measurements. IEEE 802-2001 IEEE Std 802-2001 (R2007), IEEE Standard for Local and Metropolitan Area Networks. Overview and Architecture. IEEE 802.2 IEEE 802.2:1998, Information technology Telecommunications and information exchange between systems Local and metrop
42、olitan area networks Specific requirements Part 2: Logical Link Control. 2 Rec. ITU-T G.9903 (08/2017) IEEE 802.15.4 IEEE 802.15.4:2006, IEEE Standard for Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Par
43、t 15.4: Wireless Medium Access (MAC) and Physical Layer (PHY) Specifications for Low-Rate Wireless Personal Area Networks (WPANs). IEEE 1901.2 IEEE 1901.2 (2013), IEEE Standard for Low-Frequency (less than 500 kHz) Narrowband Power Line Communications for Smart Grid Applications. IETF RFC 2119 IETF
44、RFC 2119 (1997), Key words for use in RFCs to Indicate Requirement Levels. IETF RFC 2284 IETF RFC 2284 (1998), PPP Extensible Authentication Protocol (EAP). IETF RFC 2865 IETF RFC 2865 (2000), Remote Authentication Dial In User Service (RADIUS). IETF RFC 3748 IETF RFC 3748 (2004), Extensible Authent
45、ication Protocol (EAP). IETF RFC 4291 IETF RFC 4291 (2006), IP Version 6 Addressing Architecture. IETF RFC 4764 IETF RFC 4764 (2007), The EAP-PSK Protocol: A Pre-Shared Key Extensible Authentication Protocol (EAP) Method. IETF RFC 4861 IETF RFC 4861 (2007), Neighbor Discovery for IP version 6 (IPv6)
46、. IETF RFC 4862 IETF RFC 4862 (2007), Ipv6 Stateless Address Autoconfiguration. IETF RFC 4944 IETF RFC 4944 (2007), Transmission of IPv6 Packets over IEEE 802.15.4 Networks. IETF RFC 5444 IETF RFC 5444 (2009), Generalized Mobile Ad Hoc Network (MANET) Packet/Message Format. IETF RFC 6282 IETF RFC 62
47、82 (2011), Compression Format for IPv6 Datagrams over IEEE 802.15.4-Based Networks. IETF RFC 6775 IETF RFC 6775 (2012), Neighbor Discovery Optimization for IPv6 over Low-Power Wireless Personal Area Networks (6LoWPANs). TTC JJ-300.11 TTC standard JJ-300.11 (2014): Homenetwork Communication Interface
48、 for ECHONET Lite (ITU-T G.9903 Narrow band OFDM PLC), version 2.0. 3 Conventions and definitions 3.1 Conventions Binary numbers are indicated by the prefix 0b followed by the binary digits. Hexadecimal numbers are indicated by the prefix 0x followed by the hexadecimal digits. 3.2 Terms defined else
49、where None. 3.3 Terms defined in this Recommendation This Recommendation defines the following terms: 3.3.1 active tone: A tone that carries data according to the tone map field. Masked tones and pilot tones are not active tones. 3.3.2 inactive tone: A tone that carries dummy data according to the tone map field. Masked tones and pilot tones are not inactive tones. Rec. ITU-T G.9903 (08
