1、 ISO/IEC 15045-2 Edition 1.0 2012-07 INTERNATIONAL STANDARD Information technology Home electronic system (HES) gateway Part 2: Modularity and protocol ISO/IEC 15045-2:2012(E) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2012 ISO/IEC, Geneva, Switzerland All rights reserved. Unles
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9、hnology Home electronic system (HES) gateway Part 2: Modularity and protocol INTERNATIONAL ELECTROTECHNICAL COMMISSION P ICS 35.200 PRICE CODE ISBN 978-2-83220-190-9 Warning! Make sure that you obtained this publication from an authorized distributor. colour inside 2 15045-2 ISO/IEC:2012(E) CONTENTS
10、 FOREWORD . 4 INTRODUCTION . 6 1 Scope . 8 2 Normative references . 8 3 Terms, definitions and abbreviations 8 3.1 Terms and definitions 8 3.2 Abbreviations 11 4 Conformance 12 5 Architecture 12 5.1 Architectural model . 12 5.2 Design philosophy . 14 5.2.1 General approach 14 5.2.2 Distributed gatew
11、ay system (DGS) 14 5.2.3 Modularity . 15 5.2.4 Common interoperability platform 15 6 Modularity requirements . 15 7 HES-gateway system . 16 7.1 Conceptual process model 16 7.1.1 Common interoperability framework (CIF) 16 7.1.2 Generic interworking function (GIWF) 17 7.2 Physical architecture . 17 7.
12、3 Modularity . 18 7.3.1 General . 18 7.3.2 WAN access module 19 7.3.3 HAN access module 21 7.3.4 Service module 22 7.4 Data flows . 23 7.4.1 General . 23 7.4.2 Control plane . 24 7.4.3 Content (data) plane 24 8 Intermediate processes 24 8.1 General . 24 8.2 Protocol stacks 24 8.2.1 Generalised model
13、 24 8.2.2 Specific model Simple gateway. 25 8.2.3 GIWF application . 26 8.2.4 Data flow control plane signalling 26 8.3 Intermediate bus (GL bus) and protocol (GL protocol) . 27 8.3.1 General . 27 8.3.2 Lower layers 27 8.3.3 Middle layers . 27 8.3.4 Upper layers 27 8.4 Gateway management . 28 Annex
14、A (informative) Case examples . 29 A.1 Overview of case examples 29 15045-2 ISO/IEC:2012(E) 3 A.2 VDSL scenario . 29 A.3 DBS/DSL scenario 30 A.4 Healthcare management scenario 31 A.5 DSL/HomePNA scenario . 31 Annex B (informative) Intermediate logical bus topologies . 33 B.1 Overview of intermediate
15、 bus topologies 33 B.2 Mesh topology 33 B.3 Star topology 33 B.4 Combined mesh and star topology 34 Annex C (informative) Distributed gateway extension methods 35 Bibliography 36 Figure 1 Options for home-gateway configurations . 8 Figure 2 Interoperating networks and domain of HES-gateway standard
16、13 Figure 3 Alternative distributed modular architectural models. 14 Figure 4 Common interoperability framework (CIF) 17 Figure 5 HES-gateway architectural domains . 18 Figure 6 HES-link module linkage model 19 Figure 7 WAN access module block diagram . 20 Figure 8 HAN access module block diagram 21
17、 Figure 9 Service module block diagram 22 Figure 10 Data flows 23 Figure 11 HES-gateway generalised protocol stack model . 25 Figure 12 HES-gateway special case: simple gateway protocol stack model 26 Figure A.1 VDSL scenario 29 Figure A.2 DBS/DSL scenario 30 Figure A.3 Cable/DSL/energy management/Z
18、igBee scenario . 30 Figure A.4 Healthcare management scenario . 31 Figure A.5 DSL/HomePNA Scenario 31 Figure B.1 Mesh topology 33 Figure B.2 Star topology 34 Figure B.3 Combined mesh and star topology 34 Figure C.1 HES-gateway GL bus extension methods . 35 4 15045-2 ISO/IEC:2012(E) INFORMATION TECHN
19、OLOGY HOME ELECTRONIC SYSTEM (HES) GATEWAY Part 2: Modularity and protocol FOREWORD 1) ISO (International Organization for Standardization) and IEC (International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC pa
20、rticipate in the development of International Standards. Their preparation is entrusted to technical committees; any ISO and IEC member body interested in the subject dealt with may participate in this preparatory work. International governmental and non-governmental organizations liaising with ISO
21、and IEC also participate in this preparation. 2) In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an Int
22、ernational Standard requires approval by at least 75 % of the national bodies casting a vote. 3) The formal decisions or agreements of IEC and ISO on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has re
23、presentation from all interested IEC and ISO member bodies. 4) IEC, ISO and ISO/IEC publications have the form of recommendations for international use and are accepted by IEC and ISO member bodies in that sense. While all reasonable efforts are made to ensure that the technical content of IEC, ISO
24、and ISO/IEC publications is accurate, IEC or ISO cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 5) In order to promote international uniformity, IEC and ISO member bodies undertake to apply IEC, ISO and ISO/IEC publications transparently t
25、o the maximum extent possible in their national and regional publications. Any divergence between any ISO/IEC publication and the corresponding national or regional publication should be clearly indicated in the latter. 6) ISO and IEC provide no marking procedure to indicate their approval and canno
26、t be rendered responsible for any equipment declared to be in conformity with an ISO/IEC publication. 7) All users should ensure that they have the latest edition of this publication. 8) No liability shall attach to IEC or ISO or its directors, employees, servants or agents including individual expe
27、rts and members of their technical committees and IEC or ISO member bodies for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication of, use of, or reliance upon, this
28、 ISO/IEC publication or any other IEC, ISO or ISO/IEC publications. 9) Attention is drawn to the normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 10) Attention is drawn to the possibility that some of
29、 the elements of this International Standard may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. International Standard ISO/IEC 15045-2 was prepared by subcommittee 25: Interconnection of information technology equipment, of I
30、SO/IEC joint technical committee 1: Information technology. The list of all currently available parts of the ISO/IEC 15045 series, under the general title Information technology Home electronic system (HES) gateway, can be found on the IEC web site. This International Standard has been approved by v
31、ote of the member bodies, and the voting results may be obtained from the address given on the second title page. 15045-2 ISO/IEC:2012(E) 5 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. IMPORTANT The colour inside logo on the cover page of this publication indi
32、cates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 6 15045-2 ISO/IEC:2012(E) INTRODUCTION As the market has developed for home systems, the number of communications protoco
33、ls for home networks and for access to the home has increased. This has occurred even while ISO/IEC standards for these networks have been developed and published. Continuing technological progress also suggests that such proliferation will persist, and that no single technology or standard is likel
34、y to prevail. Therefore, standards to enable interoperability among applications implemented on incompatible networks are being written. This standard addresses the gateway, which provides an interconnection between an access network (a wide area network) and one or more home networks (home area net
35、works). This standard is part of a series of standards and technical reports for the Home Electronic System (HES) that deal with the topic of control and communication networks in homes and small buildings. ISO/IEC 15045-1, published in 2004, defines a basic model of the residential gateway, includi
36、ng functional requirements. This standard defines a common framework for implementing gateway platforms to achieve interconnection and interoperability of home system products and applications. The objective is to support products from any manufacturer or provider in a manner that is safe, reliable,
37、 predictable and consistent. Service providers such as cable TV companies, Internet service providers and telephone companies are each installing a gateway to deliver digital data and audio/video streams, therefore some houses contain multiple gateways. As a consequence, an optional feature of this
38、standard specifies how to interconnect multiple gateways in one house so that these gateways can co-ordinate service offerings. A communications gateway provides an interconnection between a wide area network (WAN) and local area network (LAN) where the protocols on each network differ. The gateway
39、is responsible for protocol translation of signals, message formats and timing. The home systems industry has adapted LAN technology for Home Area Networks (HANs). Ideally, each home system would be based on one HAN and all attached devices and appliances would use one communications protocol. In re
40、ality, multiple incompatible HAN technologies are being marketed. Also, each service provider is installing a separate gateway (e.g., DSL, cable broadband and satellite). Therefore, it is possible that a user will purchase and install products employing two (or more) dissimilar HANs within the same
41、premises. These HANs may be connected to WANs via separate incompatible gateways. However, the user expects these products and networks to behave as if they were the same logical network in order to deliver home services, such as: entertainment (audio/video); data/internet access; communication (tel
42、ephony); energy management; health care and monitoring; environmental control (heating and cooling); security and safety monitoring; appliance telemetry; lighting control. This standard accomplishes interoperability by specifying a modular architecture and set of protocols for interconnecting the mo
43、dular elements with a common signalling bus. It relies on a common intermediate language to achieve interoperability among applications called the Common Interoperability Framework (HES-CIF), described in this standard. Parts of ISO/IEC 18012 define the network-specific interworking functions needed
44、 to provide conforming products. 15045-2 ISO/IEC:2012(E) 7 This International Standard defines a universal gateway system by specifying interfaces between standalone local/Home Area Networks (HANs) and connected devices, multiple implementations of local/home area networks (HANs) and connected devic
45、es, Wide Area Networks (WANs) (also known as access networks) and applications connected to Home Area Networks (HANs) and connected devices. This standard establishes a framework for implementation of a general-purpose interoperability platform or “translator” among home area networks or between wid
46、e area networks and home area networks. It represents one approach to implementation of the interoperability standard ISO/IEC 18012. This standard does not attempt to specify a central controller or control system; and does not attempt to improve or resolve disparities or shortcomings among transmis
47、sion technologies, protocols, or application languages. However, this standard does provide the premises with a platform for supporting any number of specific services and supporting fundamental elements of consumer security (i.e., firewall services), safety and privacy. This standard is not a desig
48、n for a specific gateway, but rather it offers an architecture, and therefore it is necessarily abstract. However, this standard is relevant for many commercial gateway configurations. Examples of such implementations are included for information in Annex A. Summing up, this standard shows how to bu
49、ild a gateway out of modular building blocks. This International Standard does not describe or specify gateway applications, service requirements, network topologies, or how gateways are to be applied within home networks and systems. These specifications are left to other home gateway-related standards. 8 15045-2 ISO/IEC:2012(E) INFORMATION TECHNOLOGY HOME ELECTRONIC SYSTEM (HES) GATEWAY Part 2: Modularity and protocol 1 Scope This part of ISO/IEC 15045 s
