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.9961 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 2 (07/2016) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Access networks In premises networks Unified high-speed wire-line based hom
2、e networking transceivers Data link layer specification Amendment 2 Recommendation ITU-T G.9961 (2015) Amendment 2 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
3、 ALL ANALOGUE CARRIER-TRANSMISSION 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
4、.449 COORDINATION OF RADIOTELEPHONY 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 GEN
5、ERIC AND USER-RELATED ASPECTS 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
6、 G.9800G.9899 In premises networks G.9900G.9999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T G.9961 (2015)/Amd.2 (07/2016) i Recommendation ITU-T G.9961 Unified high-speed wireline-based home networking transceivers Data link layer specification Amendment 2 Summ
7、ary Recommendation ITU-T G.9961 belongs to the family of ITU-T G.996x Recommendations. Recommendation ITU-T G.9961 specifies the data link layer (DLL) for wireline-based home networking transceivers capable of operating over premises wiring including inside telephone wiring, coaxial cable, and power
8、-line wiring. It complements the system architecture and physical (PHY) layer specification in Recommendation ITU-T G.9960, and the power spectral density (PSD) specification in Recommendation ITU-T G.9964. Amendment 1 included a new way of generating LPDUs, a piggybacked acknowledgement mechanism a
9、nd an alternative method for flow establishment. This amendment 2 includes support for compression of BAT and BMAT messages, and support for indicating PSD capabilities of a node. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T G.9961 2010-06-11 15 11.1002/1000/10706 1.1 ITU
10、-T G.9961 (2010) Cor. 1 2011-12-16 15 11.1002/1000/11145 1.2 ITU-T G.9961 (2010) Amd. 1 2012-09-21 15 11.1002/1000/11144 1.3 ITU-T G.9961 (2010) Cor. 2 2013-07-12 15 11.1002/1000/11899 1.4 ITU-T G.9961 (2010) Amd.2 2014-04-04 15 11.1002/1000/12085 2.0 ITU-T G.9961 2014-04-04 15 11.1002/1000/12086 3.
11、0 ITU-T G.9961 2015-07-03 15 11.1002/1000/12401 3.1 ITU-T G.9961 (2015) Cor. 1 2015-11-22 15 11.1002/1000/12535 3.2 ITU-T G.9961 (2015) Amd. 1 2015-11-22 15 11.1002/1000/12536 3.3 ITU-T G.9961 (2015) Cor. 2 2016-04-13 15 11.1002/1000/12822 3.4 ITU-T G.9961 (2015) Amd. 2 2016-07-22 15 11.1002/1000/12
12、823 * 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-en. ii Rec. ITU-T G.9961 (2015)/Amd.2 (07/2016) FOREWORD The International Telecommunicatio
13、n 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 of ITU. ITU-T is responsible for studying technical, operating and tariff questi
14、ons 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 topics for study by the ITU-T study groups which, in turn, produce Recommendations
15、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 prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, th
16、e 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 may contain certain mandatory provisions (to ensure, e.g., interoperability or ap
17、plicability) 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 express requirements. The use of such words does not suggest that compliance wit
18、h 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 Property Right. ITU takes no position concerning the evidence, validity or applic
19、ability 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 received notice of intellectual property, protected by patents, which may be required to implement
20、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 2016 All rights reserved. No part of this publication may be reproduced, by any means w
21、hatsoever, without the prior written permission of ITU. Rec. ITU-T G.9961 (2015)/Amd.2 (07/2016) iii Table of Contents Page 1 Scope . 1 2 References . 2 3 Definitions 2 3.1 Terms defined elsewhere 2 3.2 Terms defined in this Recommendation . 3 4 Abbreviations and acronyms 6 5 Home network architectu
22、re and reference models . 10 6 Profiles 10 7 Physical layer specification 10 8 Data link layer specification . 11 8.1 Functional model and frame formats 11 8.2 MAP controlled medium access . 25 8.3 Transmission opportunities (TXOPs) and time slots (TSs) 27 8.4 Control parameters for APC, LLC, and MA
23、C . 55 8.5 Functions of the endpoint node 59 8.6 Domain master node functional capabilities 75 8.7 Addressing scheme . 174 8.8 Medium access plan (MAP) frame . 175 8.9 Retransmission and acknowledgement protocol 207 8.10 Management and control message format 220 8.11 Channel estimation protocol . 23
24、2 8.12 Connection management 253 8.13 Message flooding 259 8.14 Operation in the presence of neighbouring domains 259 8.15 Coexistence with alien power-line networks 308 8.16 PHY multicast binding protocol . 308 8.17 DLL multicast stream . 318 8.18 Inter-bandplan interoperability . 330 8.19 Node inf
25、ormation and capabilities exchange . 332 8.20 Metrics acquisition . 332 8.21 Operation in power saving modes 334 8.22 Layer 2 Configuration and Management Protocol (LCMP) . 341 8.23 Run-length compression of fields of management messages . 346 9 Security . 348 9.1 Encryption 348 9.2 Authentication a
26、nd key management procedures . 354 iv Rec. ITU-T G.9961 (2015)/Amd.2 (07/2016) Page Annex A Application protocol convergence sublayer 377 A.1 Ethernet APC (EAPC) 377 A.2 Other types of APC 380 Annex X Test vectors 382 X.1 CCM encryption . 382 X.2 PAK test vectors . 383 Bibliography. 387 Rec. ITU-T G
27、.9961 (2015)/Amd.2 (07/2016) 1 Recommendation ITU-T G.9961 Unified high-speed wireline-based home networking transceivers Data link layer specification Amendment 2 Editorial note: This is a complete-text publication. Modifications introduced by this amendment are shown in revision marks relative to
28、Recommendation ITU-T G.9961 (2015) plus its Corrigendum 1, Amendment 1 and Corrigendum 2. 1 Scope This Recommendation specifies reference models and functionality for all components of the data link layer (DLL) of home network transceivers designed for the transmission of data over premises wiring i
29、ncluding inside telephone wiring, coaxial cable, and power-line wiring, and combinations of these. This includes support of: contention-free TDMA and contention-based CSMA medium access control; parameter-based and priority-based QoS; security and confidentiality for the home network, including auth
30、entication, encryption and key management procedures; hidden nodes and data relaying; internal and external management communications; unicast and multicast retransmission based on selective acknowledgement and frame-based acknowledgement protocols; power-saving mechanisms; bidirectional transmissio
31、n; neighbouring domain interference mitigation; network management procedures, such as: network initialization procedures, admission control, node authentication and encryption key assignment, connection management, channel estimation, bandwidth reservation and flow control, topology maintenance and
32、 routing mechanisms, and recovery procedures after domain master failure. 2 Rec. ITU-T G.9961 (2015)/Amd.2 (07/2016) 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 ti
33、me 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 other references listed below. A
34、 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.9960 Recommendation ITU-T G.9960 (2015), Unified high-speed wireline-based home netwo
35、rking transceivers System architecture and physical layer specification. ITU-T G.9963 Recommendation ITU-T G.9963 (2015), Unified high-speed wireline-based home networking transceivers Multiple input/multiple output specification. ITU-T G.9972 Recommendation ITU-T G.9972 (2010), Coexistence mechanis
36、m for wireline home networking transceivers. ITU-T X.1035 Recommendation ITU-T X.1035 (2007), Password-authenticated key exchange (PAK) protocol. IEEE 802.1ad IEEE 802.1ad-2005, IEEE Standard for Local and metropolitan area networks: Provider Bridges. IEEE 802.1D IEEE 802.1D-2004, IEEE Standard for
37、Local and metropolitan area networks Media Access Control (MAC) Bridges. IEEE 802.1Q IEEE 802.1Q-2005, IEEE Standard for Local and Metropolitan Area Networks Virtual Bridged Local Area Networks Revision. IEEE 802.3 IEEE 802.3-2008, IEEE Standard for Information technology-Specific requirements Part
38、3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications. NIST FIPS 197 FIPS-PUB-197-2002, Specification for the Advanced Encryption Standard (AES), National Institute of Standards and Technology, November, 2001. NIST 800-38C Special Publica
39、tion 800-38C, Recommendation for Block Cipher Modes of Operation: the CCM Mode for Authentication and Confidentiality, National Institute of Standards and Technology, May 2004. NIST FIPS 180-3 FIPS PUB 180-3 (2008), Secure Hash Standard (SHS), National Institute of Standards and Technology, October,
40、 2008. 3 Definitions 3.1 Terms defined elsewhere None. Rec. ITU-T G.9961 (2015)/Amd.2 (07/2016) 3 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 address association table (AAT): A table that associates MAC addresses of the application entities with th
41、e DEVICE_ID of the nodes through which these application entities can be reached. 3.2.2 automatic traffic classification: A service that enables a node to establish a data flow automatically. This service is required to support client-based applications that are not capable of generating and transmi
42、tting a TSpec prior to data communication. The TSpec in this case is preconfigured in the node. 3.2.3 bit error ratio: A ratio of the number of data bits received in error to the total number of received data bits. The bit error ratio can be used for the total stream of data bits and for any of its
43、tributary bit streams. 3.2.4 broadcast: A type of communication where a node sends the same frame simultaneously to all other nodes in the home network or in the domain. 3.2.5 channel: A transmission path between nodes. One channel is considered to be one transmission path. Logically, a channel is a
44、n instance of a communications medium used for the purpose of passing data between two or more nodes. 3.2.6 client: An application entity distinguished in the network by its unique address (e.g., MAC address). 3.2.7 connection: A flow between a node and one or more other nodes uniquely identified by
45、 the following parameters carried in the PHY-frame header: Source ID (SID); Destination ID (DID); Multicast indication (MI); and Connection identifier (CONNECTION_ID). and the following parameter carried in the LPH of the associated LPDUs: Management queue flag (MQF). 3.2.8 contention-based time slo
46、t (CBTS): A time slot for which contention-based access is allowed amongst a group of nodes. 3.2.9 contention-based transmission opportunity (CBTXOP): A shared transmission opportunity for which only contention-based access is defined. 3.2.10 contention-free time slot (CFTS): A time slot within a sh
47、ared transmission opportunity assigned to a single node. 3.2.11 contention-free transmission opportunity (CFTXOP): A transmission opportunity allocated to a single node. 3.2.12 data: Bits or bytes transported over the medium or across a reference point that individually convey information. Data incl
48、udes 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. 3.2.13 data connection: A connection for delivering data LLC frame blocks.
49、3.2.14 data frame: An ordered group of bits or bytes, specific to the application layer (e.g., Ethernet frame), with start and stop delimiters. 3.2.15 data LPDU: LPDU with MQF set to zero. 3.2.16 data LLC frame: An LLC frame carrying an APDU. 4 Rec. ITU-T G.9961 (2015)/Amd.2 (07/2016) 3.2.17 data rate: The average number of bits communicated (transmitted) in a unit of time. The usual unit of time for data rate is 1 second. 3.2.18 DEV
