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 G.9963 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (07/2015) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Access networks In premises networks Unified high-speed wireline-based home networking
2、transceivers Multiple input/multiple output specification Recommendation ITU-T G.9963 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-TRANSMI
3、SSION SYSTEMS G.200G.299 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 RADIOTEL
4、EPHONY AND LINE TELEPHONY 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
5、 G.1000G.1999 TRANSMISSION 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 Metallic access networks G.9700G.9799 Optical line systems for local and access networks G.9800G.9899 In premises net
6、works G.9900G.9999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T G.9963 (07/2015) i Recommendation ITU-T G.9963 Unified high-speed wireline-based home networking transceivers Multiple input/multiple output specification Summary Recommendation ITU-T G.9963 belongs
7、 to the family of ITU-T G.996x Recommendations. Recommendation ITU-T G.9963 specifies the additions and modifications to Recommendations ITU-T G.9960 and ITU-T G.9961 that are needed for a multiple input multiple output (MIMO) home networking transceiver capable of operating over premises power-line
8、 wiring. MIMO transceivers are able to transmit and receive over three power-line conductors (phase, neutral and ground). This Recommendation also specifies the means by which transceivers that comply with ITU-T G.9960, ITU-T G.9961 and ITU-T G.9963 interoperate when used on the same wires. History
9、Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T G.9963 2011-12-16 15 11.1002/1000/11404 1.1 ITU-T G.9963 (2011) Amd.1 2014-01-13 15 11.1002/1000/12083 1.2 ITU-T G.9963 (2011) Cor.1 2014-04-04 15 11.1002/1000/12082 2.0 ITU-T G.9963 2015-07-03 15 11.1002/1000/12402 _ * To access the R
10、ecommendation, 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-en. ii Rec. ITU-T G.9963 (07/2015) FOREWORD The International Telecommunication Union (ITU) is the United Nation
11、s specialized agency in the field of telecommunications, information and communication 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
12、 them with a view to standardizing telecommunications on a worldwide basis. 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 I
13、TU-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 prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is u
14、sed for conciseness to indicate both a telecommunication administration and 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 t
15、he 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 express requirements. The use of such words does not suggest that compliance with the Recommendation is required o
16、f 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 Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Pr
17、operty 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 received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, impl
18、ementers 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 2016 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior writt
19、en permission of ITU. Rec. ITU-T G.9963 (07/2015) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 1 4 Abbreviations and acronyms 2 5 Home network architecture and reference models . 3 6 Profiles 3 7 Physical layer specification 4 7.1 Medium independent specification . 4 7.2 Med
20、ium dependent specification 48 8 Data link layer specification of the MIMO transceiver 48 8.1 Functional model and frame formats 48 8.2 MAP controlled medium access . 48 8.3 Transmission opportunities (TXOPs) and time slots (TSs) 48 8.4 Control parameters for APC, LLC and MAC 48 8.5 Functions of the
21、 endpoint node 48 8.6 Domain master node functional capabilities 48 8.7 Addressing scheme . 49 8.8 Medium access plan (MAP) frame . 49 8.9 Retransmission and acknowledgement protocol 50 8.10 Management and control message format 50 8.11 Channel estimation protocol . 52 8.12 Connection management 80
22、8.13 Message flooding 80 8.14 Operation in the presence of neighbouring domains 80 8.15 Coexistence with alien power-line networks 80 8.16 PHY multicast binding protocol . 80 8.17 DLL multicast stream . 80 8.18 Inter-bandplan interoperability . 80 8.19 Version control and capabilities exchange . 80
23、8.20 Metrics acquisition . 80 8.21 Operation in power saving modes 80 8.22 Layer 2 configuration and management protocol (LCMP) 81 8.23 MIMO transmission 81 9 Security . 83 Annex A Regional requirements for North America 84 Annex B 84 Annex C Regional requirements for Japan . 84 iv Rec. ITU-T G.9963
24、 (07/2015) Page Annex D International amateur radio bands . 84 Annex E Impact of ITU-T G.9960 on VDSL2 service . 84 Annex F 84 Annex G Test vectors 85 Annex H Application protocol convergence sublayer 85 Annex X Test vectors 85 Rec. ITU-T G.9963 (07/2015) 1 Recommendation ITU-T G.9963 Unified high-s
25、peed wireline-based home networking transceivers Multiple input/multiple output specification 1 Scope This Recommendation describes the modifications to ITU-T G.9960 and ITU-T G.9961 that are needed to define MIMO home networking transceivers for operation over power-line wiring. More specifically,
26、this Recommendation includes the following: the PHY functional models of the MIMO transceivers; detailed descriptions of the modifications (changes and additions) needed in the PHY and DLL sections relative to ITU-T G.9960 and ITU-T G.9961; the means by which transceivers that comply with ITU-T G.99
27、60, ITU-T G.9961 and this Recommendation ITU-T G.9963 interoperate when operating on the same wires; and the means by which transmissions from ITU-T G.9963 transceivers do not degrade the performance of transceivers that comply with ITU-T G.9960 and ITU-T G.9961 when operating on the same wires. An
28、ITU-T G.9963 transceiver shall be fully compliant with ITU-T G.9960 and ITU-T G.9961. NOTE In those regions, or particular installations, where only two conductors are used for mains sockets, a modem equipped with a MIMO transceiver will behave as an ITU-T G.9960 transceiver. 2 References The follow
29、ing 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 to revision; users of this Recomm
30、endation 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 within this Recommendation does not g
31、ive it, as a stand-alone document, the status of a Recommendation. ITU-T G.9960 Recommendation ITU-T G.9960 (2015), Unified high-speed wireline-based home networking transceivers System architecture and physical layer specification. ITU-T G.9961 Recommendation ITU-T G.9961 (2015), Unified high-speed
32、 wireline-based home networking transceivers Data link layer specification. ITU-T G.9964 Recommendation ITU-T G.9964 (2011), Unified high-speed wireline-based home networking transceivers Power spectral density specification. 3 Definitions 3.1 Terms defined elsewhere Unless otherwise noted, the defi
33、nitions in ITU-T G.9960 and ITU-T G.9961 shall apply. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 ground conductor (G): A conductor in an electrical branch circuit that does not carry mains current under normal operation. It provides a low-impedanc
34、e return path for ground-fault current back 2 Rec. ITU-T G.9963 (07/2015) to the service entrance panel for the purposes of protecting personnel and equipment and ensuring circuit breaker trip. At the service entrance panel, this conductor is bonded to an earthing (grounding) electrode. In regulatio
35、ns in some regions this is commonly referred to as the equipment grounding conductor (EGC). NOTE 1 Some electrical appliances do not connect to the ground conductor. NOTE 2 The neutral and ground conductors are commonly bonded together in the service entrance panel and nowhere else, by virtue of the
36、ir common bonding to the earthing electrode. 3.2.2 MIMO channel: A channel that has multiple input ports (Tx ports) and multiple output ports (Rx ports). A “2 X 2“ MIMO channel has 2 Tx ports and 2 Rx ports. 3.2.3 MIMO transmission: Transmission where one or two spatial streams are converted into tw
37、o transmit streams. 3.2.4 neutral conductor (N): A conductor in an electrical branch circuit that serves as the reference conductor and return path for current supplied by the circuits phase conductor(s). At the service entrance panel, this conductor may be bonded to an earthing (ground) electrode.
38、In such cases, regulations in some regions refer to it as the “grounded conductor“. NOTE Not all branch circuits include a neutral conductor. The term “grounded conductor“ should not be confused with the term “ground conductor“ or EGC. 3.2.5 phase conductor (P): A conductor in an electrical branch c
39、ircuit that is energized with mains voltage with respect to the circuits reference conductor. In regulations in some regions, this is commonly referred to as a “line conductor“. 3.2.6 spatial stream: A stream of data that may be mapped for transmission over one or more ports. 3.2.7 transmit stream:
40、A stream of symbols created by the Tx port mapper. Each transmit stream is assigned for transmission over a specific Tx port. 3.2.8 Tx (or Rx) port: A physical connection to the power-line medium using a combination of the available three conductors (phase (P), neutral (N) and ground (G) for transmi
41、tting and receiving signals. An example of a port is a pair of conductors, such as P-N, N-G or P-G. A port used for transmission is called a “Tx port“. A port used for reception is called an “Rx port“. 3.2.9 Tx port mapper: A function that maps pairs of constellation points assigned to the two spati
42、al streams on the same sub-carrier, to a modified pair of signals that (after orthogonal frequency division multiplexing (OFDM) modulation, i.e., inverse discrete Fourier transform (IDFT) are connected to Tx ports. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and
43、 acronyms: ACE Additional Channel Estimation APC Application Protocol Convergence BAT Bit Allocation Table BMAT Bit and Tx port Mapping Allocation Table DLL Data Link Layer DOD Domain identifier DSL Digital Subscriber Line EGC Equipment Grounding Conductor FEC Forward Error Correction Rec. ITU-T G.9
44、963 (07/2015) 3 IDFT Inverse Discrete Fourier Transform IDPS Inter-Domain Presence Signal ISC Inactive Sub-Carrier LFSR Linear Feedback Shift Register LSB Least Significant Bit MAC Medium Access Control MAP Medium Access Plan MAT Mapping Allocation Table MDI Medium-Dependent Interface MIMO Multiple
45、Input/Multiple Output MPDU Media access control Protocol Data Unit MSC Masked Sub-Carrier OFDM Orthogonal Frequency Division Multiplexing PCS Physical Coding Sub-layer PG Precoding Grouping PHY Physical layer PMA Physical Medium Attachment PMD Physical Medium Dependent PMI Physical Medium-independen
46、t Interface PMSC Permanently Masked Sub-Carrier PR Priority Resolution PSD Power Spectral Density QoS Quality of Service RMAP Relayed Medium Access Plan RMSC Regionally Masked Sub-Carrier SM Sub-carrier Mark SS Spatial Stream SSC Supported Sub-Carrier TPM Tx Port Mapping TS Time Slot TXOP Transmissi
47、on Opportunity 5 Home network architecture and reference models See clause 5 of ITU-T G.9960. 6 Profiles See clause 6 of ITU-T G.9960. 4 Rec. ITU-T G.9963 (07/2015) 7 Physical layer specification 7.1 Medium independent specification 7.1.1 Functional model of the physical layer (PHY) As stated in cla
48、use 1, an ITU-T G.9963 compliant transceiver (i.e., a MIMO transceiver) shall be fully compliant with ITU-T G.9960 and ITU-T G.9961. As such, a MIMO transceiver is able to operate based upon the functional models described in clause 7.1.1 (general PHY model), clause 7.1.2 (PCS), clause 7.1.3 (PMA) a
49、nd clause 7.1.4 (PMD) of ITU-T G.9960. Such an operation, resulting in ITU-T G.9960 transmission, may be used for certain transmission cases, as described in clause 7.1.2.1. The functional model of the PHY layer of a MIMO transceiver, for cases of MIMO transmission, is presented in Figure 7-1. The physical medium-independent interface (PMI) and the medium-dependent interface MDI are, respectively, two demarcation
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