ITU-T G 9970-2009 Generic home network transport architecture (Study Group 15)《一般家庭网络传输架构 15号研究组》.pdf
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1、 International Telecommunication Union ITU-T G.9970TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (01/2009) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Access networks In premises networks Generic home network transport architecture Recommendation ITU-T G.9970 ITU-T G-SER
2、IES 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 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON
3、 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.450G.499 TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600
4、G.699 DIGITAL TERMINAL EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900G.999 QUALITY OF SERVICE AND PERFORMANCE GENERIC AND USER-RELATED ASPECTS G.1000G.1999 TRANSMISSION MEDIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS G.7000G.79
5、99 PACKET OVER TRANSPORT ASPECTS G.8000G.8999ACCESS NETWORKS G.9000G.9999 In premises networks G.9950G.9999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T G.9970 (01/2009) i Recommendation ITU-T G.9970 Generic home network transport architecture Summary Recommenda
6、tion ITU-T G.9970 describes the generic architecture for home networks and their interfaces to the operators broadband access networks. Source Recommendation ITU-T G.9970 was approved on 13 January 2009 by ITU-T Study Group 15 (2009-2012) under Recommendation ITU-T A.8 procedures. ii Rec. ITU-T G.99
7、70 (01/2009) FOREWORD The International Telecommunication 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 respons
8、ible 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 Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU
9、-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 technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative
10、 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. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain manda
11、tory 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 obligatory language such as “must“ and the negative equivalents are used to express requirements. The
12、 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 of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes
13、 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 the date of approval of this Recommendation, ITU had not received notice of intellectual propert
14、y, 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 consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2009 All rights reserved. N
15、o part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T G.9970 (01/2009) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 2 4 Abbreviations 2 5 Conventions 4 6 Generic home network architecture 4 6.1 Application layer ge
16、neric home network model 4 6.2 Transport layer generic home network model 4 6.3 Relationship between the home network architecture for the transport layer and that of the application layer 9 7 Possible demarcation points . 12 7.1 Possible demarcation points for IP terminals . 12 7.2 Possible demarca
17、tion points for non-IP terminals 12 8 High level requirements 13 8.1 QoS control. 13 8.2 Device management . 14 8.3 IP addressing 16 8.4 Security. 17 Annex A The relationship between Recommendation ITU-T G.9960 and this Recommendation 18 Appendix I Example applications of the generic home network ar
18、chitecture 20 Bibliography. 22 iv Rec. ITU-T G.9970 (01/2009) Introduction As the use of electronics and communications equipment proliferates in the home, as well as their technologies and protocols, there have been several proposals for standardization of equipment, transport and networking within
19、 the “home network“. Recommendation ITU-T G.9970 proposes the generic home network architecture for the transport layer that can become the platform for the development of home networking standards. Rec. ITU-T G.9970 (01/2009) 1 Recommendation ITU-T G.9970 Generic home network transport architecture
20、 1 Scope Considering that, in the future, the home network will be interconnected with the next generation network (NGN), this Recommendation describes the generic home network architecture from the viewpoint of the NGN architecture. ITU-T Y.2012 defines the transport stratum as well as the service
21、stratum. Considering these, the generic home network architecture can be separately discussed both in the transport layer categorized in the transport stratum and the application layer categorized in the service stratum. This Recommendation references the former model. Note that the latter model is
22、specified in the companion recommendation, ITU-T H.622. Its detail will be described in clause 6. This Recommendation discusses the interfaces between access networks and home networks, including interfaces within home networks as well as legacy interfaces. However, interfaces for off-air broadcast
23、services are not considered in this Recommendation. Interfaces in the home network as well as the interface to the access network are shown as reference points, while proposed demarcation points for the customer and the operator are also shown in this Recommendation. Moreover, this Recommendation id
24、entifies key transport technologies for an operator to consider when providing services relevant to home networking. In summary, this Recommendation addresses layer 3 of the home network architecture, while ITU-T G.9960 addresses the home network architecture in layers 2 and 1. Moreover, this Recomm
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