1、 International Telecommunication Union ITU-T G.9902TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (10/2012) 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 ITU-T G.hnem networks Recommendation ITU-T G.9902 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.29
3、9 INDIVIDUAL 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 TELEPHO
4、NY G.450G.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 TRANSMISS
5、ION MEDIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS G.7000G.7999 PACKET OVER TRANSPORT ASPECTS G.8000G.8999 ACCESS NETWORKS G.9000G.9999 In premises networks G.9900G.9999For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T G.9902 (10/2012) i Recom
6、mendation ITU-T G.9902 Narrowband orthogonal frequency division multiplexing power line communication transceivers for ITU-T G.hnem networks Summary Recommendation ITU-T G.9902 contains the physical layer (PHY) and the data link layer (DLL) specifications for the ITU-T G.9902 narrowband orthogonal f
7、requency division multiplexing (OFDM) power line communication transceivers, operating over alternating current and direct current electric power lines over frequencies below 500 kHz. This Recommendation uses material from Recommendations ITU-T G.9955 and ITU-T G.9956; specifically material from the
8、 main body and the annexes pertaining to the main body. New technical material has not been introduced in this version. The control parameters that determine spectral content, power spectral density (PSD) mask requirements and the set of tools to support the reduction of the transmit PSD can be foun
9、d in Recommendation ITU-T G.9901. History Edition Recommendation Approval Study Group 1.0 ITU-T G.9902 2012-10-29 15 ii Rec. ITU-T G.9902 (10/2012) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and co
10、mmunication technologies (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.
11、 The World Telecommunication 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 Resoluti
12、on 1. In some areas of 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
13、 a recognized operating 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 me
14、t. The words “shall“ 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 possib
15、ility that the practice 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 Re
16、commendation development process. As of the date of approval of this Recommendation, ITU had not 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 informat
17、ion and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2013 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.9902 (10/2012) iii Table of Content
18、s Page 1 Scope 1 2 References. 1 3 Definitions 2 3.1 Terms defined in this Recommendation . 2 4 Abbreviations and acronyms 5 5 Network architecture and reference models . 9 5.1 Network architecture and topology 9 5.2 Reference models . 18 6 Conventions 25 6.1 Bit ordering convention 25 6.2 Message n
19、omenclature convention . 26 7 Profiles 27 7.1 Low complexity profile (LCP) . 28 8 Physical layer (PHY) specification . 28 8.1 Functional model of the PHY . 28 8.2 Physical coding sublayer (PCS) . 29 8.3 Physical medium attachment sublayer (PMA) . 38 8.4 Physical medium dependent sublayer (PMD) 50 8.
20、5 Frequency band specification . 66 8.6 Transmit PSD mask 66 8.7 Electrical specification . 67 8.8 PHY data, management and control primitives 69 9 Data link layer (DLL) specification 79 9.1 Functional model of DLL and frame formats . 79 9.2 Medium access procedures . 98 9.3 Domain operation . 105 9
21、.4 Management plane 122 9.5 Domain management protocols 136 9.6 Security . 138 Annex A Extremely robust mode . 146 A.1 Use of PFH fields in ERM 146 A.2 ERM extensions to PMA functionality 146 A.3 ERM extensions of PMD functionality 147 Annex B Application protocol convergence sublayer 150 B.1 IP6-AP
22、C . 150 iv Rec. ITU-T G.9902 (10/2012) Page Annex C IP6 header compression methods 157 Annex D Examples and use cases of ITU-T G.9902 network topologies 159 D.1 Examples of UAN topologies and deployments scenarios . 159 Rec. ITU-T G.9902 (10/2012) 1 Recommendation ITU-T G.9902 Narrowband orthogonal
23、frequency division multiplexing power line communication transceivers for ITU-T G.hnem networks 1 Scope Recommendation ITU-T G.9902 contains the physical layer (PHY) and the data link layer (DLL) specifications for the ITU-T G.9902 narrowband orthogonal frequency division multiplexing (OFDM) power l
24、ine communication transceivers operating over 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
25、 through transformer medium-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, h
26、ome automation and home area network (HAN) communications scenarios. This Recommendation does not contain the control parameters that determine spectral content, power spectral density (PSD) mask requirements and the set of tools to support a reduction of the transmit PSD; all of which are detailed
27、in ITU-T G.9901. 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 s
28、ubject 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 docume
29、nt 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 (2012), Narrowband orthogonal frequency division multiplexing power line communication transceivers Power spectral density specification. IEEE 802.3 IEE
30、E 802.3 (2005), Local and metropolitan area networks Specific requirements. Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) access method and Physical Layer specifications. IETF RFC 791 IETF RFC 791 (1981), Internet Protocol, DARPA Internet Program, Protocol Specification. I
31、ETF RFC 2460 IETF RFC 2460 (1998), Internet Protocol, Version 6 (IPv6) Specification. IETF RFC 4861 IETF RFC 4861 (2007), Neighbor Discovery for IP version 6 (IPv6). IETF RFC 4944 IETF RFC 4944 (2007), Transmission of IPv6 Packets over IEEE 802.15.4 Networks. IETF RFC 6282 IETF RFC 6282 (2011), Comp
32、ression Format for IPv6 Datagrams over IEEE 802.15.4-Based Networks. NIST PUB 197 NIST FIPS PUB 197 (2001), Advanced Encryption Standard (AES). NIST SP 800-38C NIST SP 800-38C (2004), Recommendation for Block Cipher Modes of Operation: The CCM Mode for Authentication and Confidentiality. 2 Rec. ITU-
33、T G.9902 (10/2012) EUI-64 EUI-64 (in force), Guidelines for 64-bit Global Identifier, IEEE. 3 Definitions 3.1 Terms defined in this Recommendation This Recommendation defines the following terms: 3.1.1 alien domain: This is any group of non-ITU-T G.9902 nodes connected to the same or different mediu
34、m (wired or wireless) operating in close proximity. These domains can be used as backbones to the ITU-T G.9902 network or as separate networks. The L3 bridging function to an alien domain, as well as coordination with an alien domain to avoid mutual interference is beyond the scope of this Recommend
35、ation. 3.1.2 advanced metering infrastructure (AMI): The primary means for utilities to interact with meters on customer sites. In addition to basic meter reading, AMI provides two-way communication which allows energy usage data to be collected and analysed and it enables the interaction with advan
36、ced devices such as electricity meters, gas meters, heat meters, and water meters, through various communications media. 3.1.3 bandplan: This is a specific range of the frequency spectrum that is defined by a lower frequency and upper frequency. 3.1.4 baseband: This is a frequency band defined by an
37、 up-convert frequency FUC = 0 and an up-shift frequency FUS = FSCN/2 (see Table 8-27). 3.1.5 bridge to alien domain/network: An application device implementing an L2 or L3-bridging function to interconnect an ITU-T G.9902 domain to an alien domain (or alien network). Bridging to alien domains/networ
38、ks is beyond the scope of this Recommendation. 3.1.6 broadcast: This is a type of communication where a node sends the same frame simultaneously to all other nodes in the home network or in the domain. 3.1.7 carrier sense (CRS): This is generated by the receiver and indicates that the medium is busy
39、, i.e., a PHY frame or sequence of PHY frames, or a special signal (e.g., INUSE, PR) is currently being transmitted on the medium by another node. CRS may be either a physical carrier sense signal or a virtual carrier sense indicator. Physical carrier sense signal: generated by analysing physical si
40、gnals that are present on the medium. Virtual carrier sense signal: generated based on the information on the PHY frame duration or PHY frame sequence duration derived from the frame header or communicated to a node by other means (e.g., in another frame). 3.1.8 ceiling(x): A function that returns t
41、he minimum integer value bigger than or equal to x. 3.1.9 CENELEC band: Frequency band between 3 kHz and 148.5 KHz which is allowed to be used for power line communications. Four CENELEC (European Committee for Electrotechnical Standardization) bands are defined: A: 3-95 kHz, B: 95-125 kHz, C: 125-1
42、40 kHz and D: 140-148.5 kHz. For more details, see ITU-T G.9901. 3.1.10 channel: A transmission path between nodes. One channel is considered to be one transmission path. Logically, a channel is an instance of where a communications medium is used for the purposes of passing data between two or more
43、 nodes. 3.1.11 coding overhead: Part of the overhead used to carry coding redundancy (such as redundancy bits of error correction coding or CRC). Rec. ITU-T G.9902 (10/2012) 3 3.1.12 data: Bits or bytes transported over a medium or via a reference point that individually conveys information. Data in
44、cludes both user (application) data and any other auxiliary information (overhead, including control, management, etc.). Data does not include bits or bytes that, by themselves, do not convey any information, such as preamble. 3.1.13 data rate: The average number of data elements (bits, bytes, or fr
45、ames) communicated (transmitted) in a unit of time. Depending on the data element, data bit rate, data byte rate, and symbol frame rate may be used. The usual unit of time for data rate is 1 second. 3.1.14 domain: A part of an ITU-T G.9902 home network comprising a domain master and all those nodes
46、that are registered with this same domain master. In the context of this Recommendation, use of the term domain without a qualifier means ITU-T G.9902 domain, and use of the term alien domain means non-ITU-T G.9902 domain. 3.1.15 domain access point (DAP): The unique node in a centralized mode (CM)
47、that supports relay functionality through which all nodes communicate. 3.1.16 domain ID: A unique identifier of a domain. 3.1.17 domain master (DM): A node that manages (coordinates) all other nodes of the same domain. Domain master is a node with extended management capabilities that enables the fo
48、rming, controlling and maintaining of the nodes associated with its domain. 3.1.18 end-node: A node that is not a domain master; all nodes in the domain except the domain master are end-nodes. 3.1.19 FCC band: FCC (Federal Communications Commission) frequency band between 9 kHz and 490 KHz allowed t
49、o be used for power line communications. For more details, see ITU-T G.9901 . 3.1.20 floor(x): A function that returns the maximum integer value smaller than or equal to x. 3.1.21 global master (GM): A function that provides coordination between different domains of the same network (such as communication resources, priority settings, policies of domain masters, and interference mitigation). A GM may also convey management functions initiated by the remote management system. Detailed specificat
