1、 International Telecommunication Union ITU-T H.622.1TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (10/2008) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMSBroadband, triple-play and advanced multimedia services Advanced multimedia services and applicationsArchitecture and functional requirements for
2、home networks supporting IPTV services Recommendation ITU-T H.622.1 ITU-T H-SERIES RECOMMENDATIONS AUDIOVISUAL AND MULTIMEDIA SYSTEMS CHARACTERISTICS OF VISUAL TELEPHONE SYSTEMS H.100H.199 INFRASTRUCTURE OF AUDIOVISUAL SERVICES General H.200H.219 Transmission multiplexing and synchronization H.220H.
3、229 Systems aspects H.230H.239 Communication procedures H.240H.259 Coding of moving video H.260H.279 Related systems aspects H.280H.299 Systems and terminal equipment for audiovisual services H.300H.349 Directory services architecture for audiovisual and multimedia services H.350H.359 Quality of ser
4、vice architecture for audiovisual and multimedia services H.360H.369 Supplementary services for multimedia H.450H.499 MOBILITY AND COLLABORATION PROCEDURES Overview of Mobility and Collaboration, definitions, protocols and procedures H.500H.509 Mobility for H-Series multimedia systems and services H
5、.510H.519 Mobile multimedia collaboration applications and services H.520H.529 Security for mobile multimedia systems and services H.530H.539 Security for mobile multimedia collaboration applications and services H.540H.549 Mobility interworking procedures H.550H.559Mobile multimedia collaboration i
6、nter-working procedures H.560H.569 BROADBAND, TRIPLE-PLAY AND ADVANCED MULTIMEDIA SERVICES Broadband multimedia services over VDSL H.610H.619 Advanced multimedia services and applications H.620H.629 IPTV MULTIMEDIA SERVICES AND APPLICATIONS FOR IPTV General aspects H.700H.719 IPTV terminal devices H
7、.720H.729 IPTV middleware H.730H.739 IPTV application event handling H.740H.749 IPTV metadata H.750H.759 IPTV multimedia application frameworks H.760H.769 IPTV service discovery up to consumption H.770H.779 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T H.622.1 (1
8、0/2008) i Recommendation ITU-T H.622.1 Architecture and functional requirements for home networks supporting IPTV services Summary Recommendation ITU-T H.622.1 describes an architecture for home networks supporting IPTV services and its functional requirements. In this Recommendation, home networks
9、and IPTV-related entities are defined, and interfaces between these entities are identified. Functions needed for the home network to support IPTV services are described. Requirements for these functions are also described in this Recommendation. Source Recommendation ITU-T H.622.1 was approved on 1
10、4 October 2008 by ITU-T Study Group 16 (2005-2008) under the Recommendation ITU-T A.8 procedure. Keywords Delivery network gateway, home network, interoperability, IPTV services, IPTV terminal device, QoS, remote management, residential gateway, security. ii Rec. ITU-T H.622.1 (10/2008) FOREWORD The
11、 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 responsible for studying technic
12、al, 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-T study groups which, in
13、 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 basis with ISO and IEC.
14、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 mandatory provisions (to ensur
15、e 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 use of such words does no
16、t 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 no position concerning th
17、e 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 property, protected by patents, w
18、hich 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. No part of this publication
19、 may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T H.622.1 (10/2008) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 3 3.1 Terms defined elsewhere 3 3.2 Terms defined in this Recommendation. 3 4 Abbreviations and acronyms 3 5 Conventions 5
20、6 Home network architecture. 6 7 Quality of service (QoS). 8 7.1 Home network QoS architecture 8 7.2 Quality of service requirements 13 8 Security. 17 8.1 Home network security threats. 18 8.2 Home network security requirements. 18 8.3 Link protection requirements . 18 9 Interoperability . 18 9.1 In
21、teroperability between the IPTV access network and home network. 18 9.2 Interoperability among home network devices 19 10 Delivery network gateway (DNG) 19 10.1 DNG functional overview 19 10.2 IPI-4 interfaces . 21 10.3 IPI-3 interfaces . 23 10.4 Packet processing . 24 10.5 Network services support
22、. 25 10.6 IGMP functionality. 26 11 Network management. 27 11.1 Remote management 27 11.2 QoS management functions on the DNG . 28 11.3 Security management functions on the DNG. 28 11.4 Performance monitoring and diagnostics, and troubleshooting functions on the DNG. 28 11.5 Local management applica
23、tion for the DNG 28 11.6 IPTV service information report 29 Annex A Considerations on ISO/IEC 15045-1 for IPTV services . 30 A.1 Introduction 30 A.2 Comparison of terminology 30 iv Rec. ITU-T H.622.1 (10/2008) Page A.3 Packet processing and interfaces of the DNG 30 A.4 Security consideration 31 Appe
24、ndix I An explanation of the layered model for the IPTV home network 32 Appendix II UPnP-based home network for IPTV services. 34 Appendix III Consideration of retransmission of free-to-air broadcast content . 35 III.1 Middleware aspect 35 III.2 Content protection issue . 35 III.3 Privacy protection
25、 issue 35 III.4 Delivery control of retransmission . 35 III.5 Provision of emergency broadcast 35 Appendix IV Example configurations for an IP-based home network. 36 Bibliography. 37 Rec. ITU-T H.622.1 (10/2008) 1 Recommendation ITU-T H.622.1 Architecture and functional requirements for home network
26、s supporting IPTV services 1 Scope This Recommendation describes the relationship between the home network (HN) and IPTV-related entities. It also identifies rules and requirements for functions needed on the home network to support IPTV services. It further sets criteria to verify compliance of hom
27、e network devices, e.g., IPTV terminal devices, to the identified rules and requirements. The architecture and requirements described in this Recommendation are based on current delivery network technology and thus advanced IPTV services and features that are possible with emerging NGN (next generat
28、ion network) architecture, e.g., multicast control, are not covered. Advanced IPTV features and services in NGN-based home networks are for further study. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provis
29、ions 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 Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendation
30、s 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 give it, as a stand-alone document, the status of a Recommendation. ITU-T G.983.x Recommendation ITU-T G.983.x-series (in f
31、orce), Broadband optical access systems. ITU-T G.984.x Recommendation ITU-T G.984.x-series (in force), Gigabit-capable Passive Optical Networks (GPON). ITU-T G.992.1 Recommendation ITU-T G.992.1 (1999), Asymmetric digital subscriber line (ADSL) transceivers. ITU-T G.992.3 Recommendation ITU-T G.992.
32、3 (2005), Asymmetric digital subscriber line transceivers 2 (ADSL2). ITU-T G.992.5 Recommendation ITU-T G.992.5 (2005), Asymmetric digital subscriber line (ADSL) transceivers Extended bandwidth ADSL2 (ADSL2plus). ITU-T G.993.2 Recommendation ITU-T G.993.2 (2006), Very high speed digital subscriber l
33、ine transceivers 2 (VDSL2). ITU-T H.622 Recommendation ITU-T H.622 (2008), A generic home network architecture with support for multimedia services. ITU-T J.190 Recommendation ITU-T J.190 (2007), Architecture of MediaHomeNet. 2 Rec. ITU-T H.622.1 (10/2008) ITU-T X.1111 Recommendation ITU-T X.1111 (2
34、007), Framework of security technologies for home network. ATIS-0800002 ATIS standard ATIS-0800002 (2006), IPTV Architecture Requirements. HGI HGI-RD001-R1-obs Home Gateway Initiative (2006), Home Gateway Technical Requirements: Release 1.0. IETF RFC 2236 IETF RFC 2236 (1997), Internet Group Managem
35、ent Protocol, Version 2. IETF RFC 2710 IETF RFC 2710 (1999), Multicast Listener Discovery (MLD) for IPv6. IETF RFC 3376 IETF RFC 3376 (2002), Internet Group Management Protocol, Version 3. IEEE 802.1D IEEE Std. 802.1D (2004), IEEE standard for local and metropolitan area networks Media Access Contro
36、l (MAC) Bridges. IEEE 802.1Q IEEE Std. 802.1Q (2005), IEEE Standard for Local and Metropolitan Area Networks Virtual Bridged Local Area Networks. IEEE 802.3 IEEE Std. 802.3 (2005), IEEE standard for Information technology Telecommunications and information exchange between systems-Local and metropol
37、itan area networks Specific requirements Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications. IEEE 802.11 IEEE Std. 802.11 (2007), IEEE Standard for Information technology Telecommunications and information exchange between systems
38、 Local and metropolitan area networks Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications. IEC 62481-1 IEC 62481-1 (2007), Digital living network alliance (DLNA) home networked device interoperability guidelines Part 1: Architecture and pro
39、tocols. IEC 62481-2 IEC 62481-2 (2007), Digital living network alliance (DLNA) home networked device interoperability guidelines Part 2: DLNA media formats. ISO/IEC 8802-1 ISO/IEC 8802-1 (2001), Information technology Telecommunications and information exchange between systems Local and metropolitan
40、 area networks Specific requirements Part 1: Overview of Local Area Network Standards. ISO/IEC 15045-1 ISO/IEC 15045-1 (2004), Information technology Home electronic system (HES) gateway Part 1: A residential gateway model for HES. Rec. ITU-T H.622.1 (10/2008) 3 3 Definitions 3.1 Terms defined elsew
41、here This Recommendation uses the following terms defined elsewhere: 3.1.1 delivery network gateway (DNG) ATIS-0800002: A device implementing the delivery network gateway function (DNGF). NOTE Many terms such as home access (HA) ITU-T J.190, home gateway, residential gateway, delivery network gatewa
42、y and so on are used for the same device. 3.1.2 home network (HN) ITU-T H.622: A home network is the collection of elements that process, manage, transport and store information, thus enabling the connection and integration of multiple computing, control, monitoring, communication and entertainment
43、devices in the home. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 delivery network gateway functions (DNGF): Set of functions that mediate between the network and service provider domains and the IPTV terminal function (ITF). NOTE A device implement
44、ing the DNGF is commonly referred to as the residential gateway (RG) or delivery network gateway (DNG). 3.2.2 home network (HN) capable IPTV TD: An IPTV TD which has HN capability. This is typically a server and/or a client to HN devices. 3.2.3 HN capable TD: A TD which has HN capability. This is ty
45、pically a server and/or a client to HN devices. 3.2.4 IPTV TD: A terminal device which has IPTV terminal function (ITF) functionality, e.g., a set-top box. 3.2.5 IPTV terminal function (ITF): The end-user function(s) associated with a) receiving and responding to network control channel messages reg
46、arding session set-up, maintenance and tear-down, and b) receiving the content of an IP transport from the network and rendering. 3.2.6 terminal device (TD): A device which typically presents and/or processes content, such as a personal computer, a computer peripheral, a network appliance, a mobile
47、device, a television set, a monitor, a voice over IP terminal or an audiovisual media player. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: ACL Access Control List ALG Application Layer Gateway ALL Application Layer Logic AN Access Network BC-NW Broa
48、dcast Network DA Destination Address DHCP Dynamic Host Configuration Protocol DLNA Digital Living Network Alliance DMP Digital Media Player DMS Digital Media Server 4 Rec. ITU-T H.622.1 (10/2008) DMZ Demilitarized Zone DNG Delivery Network Gateway DNGF Delivery Network Gateway Function DNS Domain Na
49、me System DoS Denial of Service DSCP Differentiated Services Code Point DSL Digital Subscriber Line DTCP Digital Transmission Content Protection ECG Electronic Content Guide EPG Electronic Programme Guide FEC Forward Error Correction GUI Graphical User Interface HA Home Access HN Home Network IGMP Internet Group Management Protocol IP Internet Protocol IPI Internet Protocol Interface IPTV Internet Protocol Television L2 Layer 2 LAN Local Area Network MAC Media Acces
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