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1、INTERNATIONAL STANDARD IEC 61162-410 First edition 2001-11 Maritime navigation and radiocommunication equipment and systems Digital interfaces Part 410: Multiple talkers and multiple listeners Ship systems interconnection Transport profile requirements and basic transport profile Reference number IE
2、C 61162-410:2001(E) Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1. Consolidated editions The IEC is now publishing consolidated versions of its publications. For example, ed
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8、tserviec.ch Tel: +41 22 919 02 11 Fax: +41 22 919 03 00 -,-,- INTERNATIONAL STANDARD IEC 61162-410 First edition 2001-11 Maritime navigation and radiocommunication equipment and systems Digital interfaces Part 410: Multiple talkers and multiple listeners Ship systems interconnection Transport profil
9、e requirements and basic transport profile PRICE CODE IEC 2001 Copyright - all rights reserved No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Inte
10、rnational Electrotechnical Commission3, rue de Varemb Geneva, Switzerland Telefax: +41 22 919 0300e-mail: inmailiec.ch IEC web site http:/www.iec.ch For price, see current catalogue Commission Electrotechnique Internationale International Electrotechnical Commission V 2 61162-410 IEC:2001(E) CONTENT
11、S FOREWORD.5 INTRODUCTION.7 1Scope and object8 2Normative references9 3Definitions 10 4Transport layer service specification .15 4.1General .15 4.2T-profile network and host computer addressing 15 4.2.1Introduction .15 4.2.2Addressing scheme .15 4.2.3Unique and singular hosts on the network 16 4.2.4
12、Non-segmented logical network .16 4.2.5Size of network 16 4.3Communication services requirements.16 4.3.1Introduction .16 4.3.2Connectivity and data transfer internally and externally.16 4.3.3Service classes16 4.4Time services19 4.4.1General .19 4.4.2Services 19 4.5Management services20 4.5.1General
13、 .20 4.5.2Services 20 4.6Graceful degradation facility.21 5Transport layer interface (TLI).21 5.1Overview .21 5.1.1LNAC and TLI22 5.2General principles22 5.2.1TLI, TP network service classes and connection points 22 5.2.2Connection point capabilities23 5.2.3Attributes of TP network.25 5.2.4Attribute
14、s of connection point.26 5.2.5Connection point states26 5.3TLI service overview29 5.3.1General .29 5.3.2TLI management services29 5.3.3Connection point management.30 5.3.4Data management .33 6T-profile for redundant Internet .36 6.1Introduction .36 6.1.1Rationale for the use of Internet protocols36
15、6.1.2Relationship to basic Internet protocols36 6.1.3Rationale for use of Ethernet37 61162-410 IEC:2001(E) 3 6.2Transport profile architecture.37 6.2.1General .37 6.2.2Redundancy.38 6.2.3Communication services 39 6.3Message formats.39 6.3.1General format.39 6.3.2Special reliable link messages .40 6.
16、3.3Broadcast messages40 6.4Reliable stream protocol 41 6.4.1Introduction .41 6.4.2Connection management .41 6.4.3Data transmission45 6.4.4Data reception .46 6.4.5Link close 47 6.5Reliable message service 47 6.5.1Introduction .47 6.5.2Data reception .47 6.5.3Data transmission on the urgent link 47 6.
17、6Unreliable message service .47 6.6.1Introduction .47 6.6.2Connection management .47 6.6.3Message length limitation.49 6.6.4Data transmission49 6.6.5Data reception .49 6.7Time services50 6.7.1Introduction .50 6.7.2Time management architecture50 6.7.3Client interfaces.50 6.7.4System integration requi
18、rements51 6.8Network management services 51 6.8.1Introduction .51 6.8.2Physical architecture51 6.8.3Required safety precautions.51 6.8.4NMA requirements.51 6.8.5Network element requirements.51 7T-profile for non-redundant Internet.52 7.1Introduction .52 7.2Relationship to redundant Internet protocol
19、 52 7.3Redundancy 52 7.4Reliable stream protocol 53 7.5Reliable message service 53 7.6Unreliable message service .53 7.7Time services53 7.8Network management services 53 8T-profile for wide area networks (MAU-LNA communication link) .53 8.1Introduction .53 8.1.1General architecture 53 8.1.2TP networ
20、k and NNN code definitions 54 -,-,- 4 61162-410 IEC:2001(E) 8.2Relationship to non-redundant Internet T-profile.54 8.3Reliable stream service .55 8.4Reliable message service 55 8.5Other services .55 Annex A (informative) Typical software library structure56 Annex B (informative) Channel synchronizat
21、ion example 57 Annex C (informative) NTP and SNTP overview58 Annex D (informative) Overview of Internet network management services .59 61162-410 IEC:2001(E) 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MARITIME NAVIGATION AND RADIOCOMMUNICATION EQUIPMENT AND SYSTEMS DIGITAL INTERFACES Part 410: Mu
22、ltiple talkers and multiple listeners Ship systems interconnection Transport profile requirements and basic transport profile FOREWORD 1)The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC Nation
23、al Committees). The object of the IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, the IEC publishes International Standards. Their preparation is entrusted to technical
24、committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organiz
25、ation for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2)The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technica
26、l committee has representation from all interested National Committees. 3)The documents produced have the form of recommendations for international use and are published in the form of standards, technical specifications, technical reports or guides and they are accepted by the National Committees i
27、n that sense. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regi
28、onal standard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards. 6) Attention is drawn to the possibility that some of the elements of
29、 this International Standard may be the subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61162-410 has been prepared by IEC technical committee 80: Maritime navigation and radiocommunication equipment and system
30、s The text of this standard is based on the following documents: FDISReport on voting 80/311/FDIS80/326/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO
31、/IEC Directives, Part 3. The special typographical conventions and nomenclature used in this standard are defined in IEC 61162-400 annex A. 6 61162-410 IEC:2001(E) Annexes A, B, C and D are for information only. The committee has decided that the contents of this publication will remain unchanged un
32、til June 2005. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. -,-,- 61162-410 IEC:2001(E) 7 INTRODUCTION International Standard IEC 61162 is a four-part standard which specifies four digital interfaces for applications in marine navigation, r
33、adiocommunication and system integration. The four parts are: IEC 61162-1Single talker and multiple listeners IEC 61162-2Single talker and multiple listeners, high speed transmission IEC 61162-3Multiple talkers and multiple listeners Serial data instrument network IEC 61162-4Multiple talkers and mul
34、tiple listeners Ship systems interconnection. Part 4 of the standard is subdivided into a number of individual standards with part numbers in the 400 series. This part of the standard contains the specification of the requirements to an IEC 61162-4 transport profile (T-profile) and also the specific
35、ation of one implementation, based on redundant Ethernet and Internet protocol functionality. The T-profile is the protocol transport mechanisms that offer simple message or byte stream transport services to the higher protocol layers (defined in other parts of the standard). In addition, the T-prof
36、ile also offers services for time distribution and physical network management. The use of Internet and Ethernet protocols offer low cost and high efficiency data transport in any kind of system. However, for safety related applications, certain measures have to be taken to avoid that particulars of
37、 office-quality and off-the-shelf technology create safety risks. This part of the standard specifies mechanisms by which a certain degree of quality of service can be guaranteed from these networks, including the provision of redundancy. Other T-profile documents will be prepared with specification
38、s of the same T-profile require- ments over other transport protocols. This will be issued in the same number series as this standard (IEC 61162-41x). Relationship with the other parts of the IEC 61162 series of standards is defined in annex B to IEC 61162-400. -,-,- 8 61162-410 IEC:2001(E) MARITIME
39、 NAVIGATION AND RADIOCOMMUNICATION EQUIPMENT AND SYSTEMS DIGITAL INTERFACES Part 410: Multiple talkers and multiple listeners Ship systems interconnection Transport profile requirements and basic transport profile 1 Scope and object This part of IEC 61162-4 defines the general requirements of the T-
40、profile and three implementations of the T-profile over the Internet V4 (IPV4) protocol suite. Part 400 of this standard defines the relationship between the different protocol levels (T-profile, A-profile and companion standards) and part 401 defines the A-profile, the immediate user of the protoco
41、l level defined in this part. The different components of the IEC 61162-4 standard are defined in IEC 61162-400. The T-profile is the specification of the communication services and the communication protocols used by the LNA to implement the A-profile functionality. Basically, the T-profile consist
42、s of the following components: a) a transport layer interface (TLI) definition that specifies the services and the semantics that will be available to the application level of the LNA (and in some cases the MAU). This includes data transport as well as time and network management services. The TLI w
43、ill be general to all T-profiles and is defined in this part 410 of the standard, b) A T-profile protocol definition that specifies how the services provided by the TLI and additional time distribution and physical network management services are implemented on the protocol level. This part 410 cont
44、ains a number of alternative T-profile protocol specifications using the Internet V4 series of standards. Additional parts of this standard will address other T-profiles based on other protocol families. Note that the time distribution and network management functionality may or may not include spec
45、ific TLI services. For some systems this functionality may be interfaced to directly by the underlying operating system. Note also that time distribution and network management are not strictly speaking transport related protocol functionality. However, the implementation of these services is normal
46、ly dependent on the transport protocols in use and is, thus, placed in the T-profile part of the standard. The purpose of this standard is to define and describe the services that will be provided at the transport level interface in a way which is completely independent of the underlying network env
47、ironment as well as defining one possible implementation of these services over the Internet V4 protocols. The separation of service and protocol definitions allows the specification of several different transport profiles, each one dedicated to a specific network environment, and to use the same tr
48、ansport service interface in all cases. Clause 4 defines the transport level services and clause 5 describes the transport layer interface through which the services are offered. These clauses define the general, network independent services. Clause 6 defines the transport profile architecture for redundant Ethernet and Internet protocols version 4 (IPV4). Clause 7 defines the architecture for a local area non-redundant Internet network. These clauses define two specific implementations of the T-profile services. -,-,- 61162-410 IEC:2001(E) 9 Clause 8 defines a simple MAU-LNA