1、 International Telecommunication Union ITU-T G.9903TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2014) 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 (02/2014) 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 de
8、termine spectral content, power spectral density (PSD) mask requirements and the set of tools to support the reduction of the transmit PSD can be found in Recommendation ITU-T G.9901. Recommendation ITU-T G.9903 (2012) used material from Recommendations ITU-T G.9955 and ITU-T G.9956; specifically fr
9、om Annexes A and D of ITU-T G.9955 and Annex A of ITU-T G.9956. This revised Recommendation further adds several improvements to the PHY, the MAC and the routing parts of the specification. History Edition Recommendation Approval Study Group Unique ID*1.0 ITU-T G.9903 2012-10-29 15 11.1002/1000/1182
10、3 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 _ *To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommen
11、dations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T G.9903 (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
12、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 Telecommunication Standardizat
13、ion 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 of information techno
14、logy 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 operating agency. Complianc
15、e 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“ or some other obliga
16、tory 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 practice or implementation
17、 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 development process. As of t
18、he 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 strongly urged to consu
19、lt the TSB patent database at http:/www.itu.int/ITU-T/ipr/. 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 G.9903 (02/2014) iii Table of Contents Page 1 Scope 1 2 References. 1 3 Definition
20、s 2 3.1 Terms defined elsewhere 2 3.2 Terms defined in this Recommendation . 2 4 Abbreviations and acronyms 3 5 Introduction 5 6 General description . 6 6.1 Overall infrastructure 6 6.2 Coexistence with other PLC networks . 6 7 Physical layer specification 7 7.1 Introduction 7 7.2 System parameters
21、8 7.3 Data rate, Reed-Solomon block size and maximum PSDU length 8 7.4 Frame structure . 14 7.5 Preamble . 15 7.6 Frame control header 17 7.7 Payload of PHY frame 21 7.8 Scrambler 21 7.9 FEC coding . 22 7.10 Interleaver . 24 7.11 Mapping for DBPSK/DQPSK/D8PSK. 29 7.12 Frequency domain pre-emphasis 3
22、1 7.13 OFDM generation (IFFT and CP addition) 31 7.14 Windowing . 31 7.15 Tone masking and tone mapping 33 7.16 Coherent modulation scheme . 34 7.17 PHY primitives . 39 8 Transmitter specifications . 48 8.1 Output level measurement 48 8.2 Transmit spectrum mask . 48 8.3 Spurious transmission . 48 8.
23、4 System clock frequency tolerance 48 8.5 Transmitter constellation 48 8.6 Transmitter spectral flatness . 50 8.7 Crossing MV/LV transformer 50 8.8 MV coupler (informative) 50 iv Rec. ITU-T G.9903 (02/2014) Page 8.9 AC phase detection . 51 9 Data link layer specifications 53 9.1 Introduction 53 9.2
24、Conventions 53 9.3 MAC sublayer specification . 54 9.4 IPv6 adaptation sublayer specifications . 100 9.5 Functional description 159 10 Security . 160 10.1 Access control and authentication 160 10.2 Confidentiality and integrity . 162 10.3 Anti-replay and DoS prevention . 162 10.4 Authentication and
25、key distribution protocol Selections from IETF RFC 3748 163 10.5 EAP method 164 Annex A Protocol implementation conformance statement . 169 A.1 Overview 169 A.2 PICS proforma tables . 169 Annex B Routing cost . 172 B.1 Composite metric method . 172 Annex C Device starting sequence of messages . 174
26、Annex D The lightweight on-demand Ad hoc distance-vector routing protocol next generation (LOADng) . 175 D.1 Introduction 175 D.2 Terminology and notation 175 D.3 Applicability statement . 176 D.4 Protocol overview and functioning 177 D.5 Protocol parameters 179 D.6 Protocol message content . 180 D.
27、7 Information base . 183 D.8 LOADng router sequence numbers 185 D.9 Route maintenance . 185 D.10 Unidirectional link handling . 186 D.11 Common rules for RREQ and RREP messages . 186 D.12 Route requests (RREQs) . 189 D.13 Route replies (RREPs) 191 D.14 Route errors (RERRs) . 193 D.15 Route reply ack
28、nowledgments (RREP_ACKs) 195 D.16 Metrics 196 D.17 Security considerations . 196 Rec. ITU-T G.9903 (02/2014) v Page Annex E Commissioning in 6LoWPAN . 200 E.1 Introduction 200 E.2 Terminology . 200 E.3 Bootstrapping . 202 E.4 IANA consideration 209 E.5 Security considerations . 209 Annex F Regional
29、requirements for Japan 210 F.1 Overview 210 F.2 Physical layer specifications for ARIB bandplan . 210 F.3 Data link layer specifications . 211 Appendix I Examples on encoding and decoding . 212 I.1 Example for data encoding . 212 I.2 Example for data decoding . 212 Appendix II Test vectors for crypt
30、ographic building blocks 213 II.1 Introduction 213 Bibliography. 215 Rec. ITU-T G.9903 (02/2014) 1 Recommendation ITU-T G.9903 Narrowband orthogonal frequency division multiplexing power line communication transceivers for G3-PLC networks 1 Scope Recommendation ITU-T G.9903 contains the physical lay
31、er (PHY) 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. This Recommendation su
32、pports indoor and outdoor communications over low-voltage lines, medium-voltage lines, through transformer low-voltage to medium-voltage and through transformer medium-voltage to low-voltage power lines in both urban and long distance rural communications. This Recommendation addresses grid to utili
33、ty meter applications, advanced metering infrastructure (AMI), and other Smart Grid applications such as the charging of electric vehicles, home automation and home area networking (HAN) communications scenarios. This Recommendation does not contain the control parameters that determine spectral con
34、tent, power spectral density (PSD) mask requirements and the set of tools to support a reduction of the transmit PSD; all of which are detailed in Recommendation ITU-T G.9901. The ITU-T would like to acknowledge the IEEE Std 1901.2(TM)-2013 for the information related to some features that are speci
35、fied in this Recommendation (ADMI, AC phase detection, and some aspects of Reed-Solomon encoding and full block interleaving) b-IEEE 1901.2-2013. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of t
36、his 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 recent edition of the Recommendations and oth
37、er 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 G.9901 Recommendation ITU-T G.9901 (2014), Narrowband orth
38、ogonal 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. ARIB STD-T84 ARIB STD-T84, Power Line Communication Equipment (10kHz 450kHz). IEEE 802-2001 IEE
39、E 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 metropolitan area networks Specific requirements Part 2: Logical Link Co
40、ntrol. 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 Part 15.4: Wireless Medium Access (MAC) and Physical Layer (PHY) Specifications for Low-Rate Wirele
41、ss Personal Area Networks (WPANs). 2 Rec. ITU-T G.9903 (02/2014) IETF RFC 2119 IETF 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 D
42、ial In User Service (RADIUS). IETF RFC 3748 IETF RFC 3748 (2004), Extensible Authentication 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) Me
43、thod. IETF RFC 4861 IETF RFC 4861 (2007), Neighbor Discovery for IP version 6 (IPv6). 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), Genera
44、lized Mobile Ad Hoc Network (MANET) Packet/Message Format. IETF RFC 6282 IETF RFC 6282 (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 (6LoWPAN
45、s). TTC JJ-300.11 TTC standard JJ-300.11 (2014): Homenetwork Communication Interface for ECHONET Lite (ITU-T G.9903 Narrow band OFDM PLC), version 2.0. 3 Definitions 3.1 Terms defined elsewhere None. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 acti
46、ve tone: A tone that carries data according to the tone map field. Masked tones and pilot tones are not active tones. 3.2.2 inactive tone: A tone that carries dummy data according to the tone map field. Masked tones and pilot tones are not inactive tones. 3.2.3 masked tone: A tone with a null amplit
47、ude according to the tone mask parameter. Thus, it contributes neither to the OFDM signals power spectrum density nor to the LQI calculation. 3.2.4 modulation scheme: Two modulation schemes are defined: differential and coherent. 3.2.5 modulation type: The following modulation types are defined: rob
48、ust modes, BPSK, DBPSK, QPSK, DQPSK, 8-PSK, D8PSK, and 16-QAM. 3.2.6 pilot tone: A tone used in coherent modulation schemes that carries a specific pattern in order to help the receiver with clock recovery and channel estimation. 3.2.7 tone map: A bitmap containing a list of the sub-bands (groups of
49、 tones) that are either active (bit set to 1) or inactive (bit set to zero). A bit in the bitmap represents a group of consecutive tones and the number of tones per group depends on the bandplan. Rec. ITU-T G.9903 (02/2014) 3 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: 6LoWPAN IPv6 over Low power Wireless Personal Area Network 8-PSK 8 Phase Shift Keyin
