1、ETSI TS 102 032 1.1.1 (2002-04) Technical Specificafion Digital Video Broadcasting (DVB); SNMP MIB for test and measurement applications in DVB systems 2 ETSI TS 102 032 VI .I .I (2002-04) The pre ent d Reference DTS/JTC-DVB-133 Keywords broadcasting, digital, DVB, testing, video ETSI 650 Route des
2、Lucioles F-O6921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Siret No 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-prfecture de Grasse (06) No 7803/88 Important notice Individual copies of the present document can be downloaded from
3、: http:lwmv.etsi .arq cument may be made available in more than one electronic version or in print. In any ca e of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing
4、on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at ha p:/pa rt
5、a I. etsi I a rgltbistat uslstatus .as p If you find errors in the present document, send your comment to: Cori vriaht Notifica tion No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telec
6、ommunications Standards Institute 2002. O European Broadcasting Union 2002. All rights reserved. DECTTM, PLUGTESTSTMand UMTSTMare Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Memb
7、ers. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI 3 ETSI TS 102 032 VI .I .I (2002-04) Contents Intellectual Property Rights . .4 Foreword . 4 1 2 3 3.1 3.2 4 4.1 4.2 5 6 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.7.1 6.7.2 6.7.3 6.8 6.8.1
8、 6.8.2 7 8 9 Scope 5 References . .5 Definitions and abbreviations. . .6 6 6 General .7 Introduction 7 The DVB Measurement Guidelines . 7 . . Requirements for the SNMP Management Information Base (MIB) . 8 Detailed TR 10 1 290 MIB structure . 9 . . . Counter objects . . ActiveTime. . . Status error
9、and Event e Traps . . . . TR 101 290 MIB . . . . 14 14 14 . Use of SMI V2 conformance statements . Capabilities . 14 DVB-MGSY STEM-MIB .15 DVB -MGSIGNALCHARACTERISTIC S -MIB . .17 DVB-MGTR101290-MIB 36 Annex A (informative): Bibliography . 191 History . .192 ETSI 4 ETSI TS 102 032 VI .I .I (2002-04)
10、 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR O00 3 14: “Intellectual Proper
11、ty Rights (7PRs); Essential, orpotentially Essential, IPRs notlJied to ETSI in respect ofETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (5). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried
12、 out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR O00 3 14 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by Joint Technical
13、 Committee (JTC) of the European Broadcasting Union (EBU), Comit Europen de Normalisation ELECtrotechnique (CENELEC) and the European Telecommunications Standards Institute (ETSI). NOTE: The EBU/ETSI JTC Broadcast was established in 1990 to Co-ordinate the drafting of standards in the specific field
14、 of broadcasting and related fields. Since 1995 the JTC Broadcast became a tripartite body by including in the Memorandum of Understanding also CENELEC, which is responsible for the standardization of radio and television receivers. The EBU is a professional association of broadcasting organizations
15、 whose work includes the Co-ordination of its members activities in the technical, legal, programme-making and programme-exchange domains. The EBU has active members in about 60 countries in the European broadcasting area; its headquarters is in Geneva. European Broadcasting Union CH-I218 GRAND SACO
16、NNEX (Geneva) Switzerland Tel: +41 22 717 21 11 Fax: +41 22 717 24 81 Founded in September 1993, the DVB Project is a market-led consortium of public and private sector organizations in the television industry. Its aim is to establish the framework for the introduction of MPEG-2 based digital televi
17、sion services. Now comprising over 200 organizations from more than 25 countries around the world, DVB fosters market-led systems, which meet the real needs, and economic circumstances, of the consumer electronics and the broadcast industry. ETSI 5 ETSI TS 102 032 VI .I .I (2002-04) 1 Scope The pres
18、ent document contains a recommendation for the SNMP MIB (Simple Network Management Protocol Management Information Base) that addresses the relevant issues of the DVB Measurement Guidelines i. The intention of this recommendation was to create a MIB that can be used in all test and measurement instr
19、uments which provide information on parameters defined in the DVB Measurement Guidelines i. It can also be implemented in other equipment that provides, besides its main fnctionalities, information on parameters as defined in the DVB Measurement Guidelines, and which is strictly speaking not a test
20、and measurement instrument. This MG MIB is self-sufficient in the sense that it does not require any other MIB for proper operation. It contains all administrative information necessary for its operation, and it provides a description of the data base for all parameters in TR 101 290 i that are suit
21、able for network management; i.e. it does not address out-of-service measurements or similar issues. Although this MIB is comprehensive in this sense for the time being, the plan is to update it whenever the DVB Measurement Guidelines should be updated. The lower layers of the SNMP protocol stack we
22、re not addressed for the purpose of the present document. It was understood that there is a variety of existing standards which are applicable for different application scenarios. The selection of such a standard e.g. for the physical layer will most likely be determined by the existing network mana
23、gement systems and their communications means. Neither the speed of the links in the management network is considered, nor are the security aspects addressed. 2 Re fe re nces The following documents contain provisions which, through reference in this text, constitute provisions of the present docume
24、nt. References are either specific (identified by date of publication andor edition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. il ETSI TR 101 290: “Digital Video Broadcasting (DVB);
25、 Measurement guidelines for DVB systems“. IETF RFC 2579 (1999) Textual Conventions for SMIv2“. IETF RFC 2578 (1999) Structure of Management Information Version 2 (SMIv2)“. IETF RFC 2576 (2000) Coexistence between Version 1, Version 2, and Version 3 of the Internet standard Network Management Framewo
26、rk“. ISO/IEC 13 8 18-1 : “Information Technology - Generic coding of moving pictures and associated audio: Systems, Recommendation H.222.0“. ETSI EN 300 421: “Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for 11/12 GHz satellite services“. 21 31 41 51 61 71 ETSI
27、EN 300 429: “Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for cable systems“. ETSI EN 300 468: “Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems“. ETSI EN 300 744: “Digital Video Broadcasting (DVB); Framing structure, c
28、hannel coding and modulation for digital terrestrial television“. SI 91 ETSI 6 ETSI TS 102 032 VI .I .I (2002-04) 3 3.1 Definitions and abbreviations De fi nit ions For the purposes of the present document, the following terms and defmitions apply: MPEG-2: Refers to the ISO/IEC 13818 series. Systems
29、 coding is defined in part 1. Video coding is defined in part 2. Audio coding is defined in part 3. multiplex: stream of all the digital data carrying one or more services within a single physical channel Service Information (SI): Digital data describing the delivery system, content and scheduling/t
30、iming of broadcast data streams, etc. It includes MPEG-2 Program Specific Information (PSI) together with independently defined extensions. Transport Stream (TS): A TS is a data structure defined in ISO/IEC 13818-1 5. It is the basis of the Digital Video Broadcasting (DVB) related standards. 3.2 Abb
31、reviations For the purposes of the present document, the following abbreviations apply: BAT BER CA ECM EIT EMM IEC IS0 MER MIB MIP MPEG NIT OID PAT PCR PID PMT PSI RF RST SDT SFN SI SNMP TDT TOT TS TV UTC DVB-T Bouquet Association Table Bit Error Rate Conditional Access Digital Video Broadcasting ba
32、seline system for digital Terrestrial television (see EN 300 744 9) Entitlement Control Message Event Information Table Entitlement Management Message International Electrotechnical Commission International Organization for Standardization Modulation Error Ratio Management Information Base Mega-fram
33、e Initialization Packet Moving Picture Experts Group Network Information Table Object IDentifier Program Association Table Program Clock Reference Packet IDentifier Program Map Table MPEG-2 Program Specific Information (as defined in ISO/IEC 13818-1 5) Radio Frequency Running Status Table (see EN 30
34、0 468 SI) Service Description Table Single Frequency Network Service Information Simple Network Management Protocol Time and Date Table Time Offset Table Transport Stream Television Universal Time Co-ordinated ETSI 7 ETSI TS 102 032 VI .I .I (2002-04) 4 General 4.1 I n trod u ction The management of
35、 complex networks is an important task, especially today when content in different formats is supposed to be passed through different networks in an almost transparent way. The timely information on irregularity, disruptions, or even only significant changes in the networks, is an important and indi
36、spensable tool for the maintenance of a certain Quality-of-Service (QoS). It also is a necessary tool for optimizing the performance of these networks. For the collection of this information, its processing and provision to a central point for decision making, i.e. the “manager“, different approache
37、s have been developed for different types of networks. Procedures for network management have long been standardized in the telecommunications world, and virtually all network equipment supports these standards. This also holds for the Internet which is largely based on telecommunications networks.
38、For analogue TV broadcast networks, the history gives us a very different picture. Although test signals were standardized at a rather early stage, the actual network management information relied very much on proprietary standards developed typically by national broadcasters over the last five deca
39、des. These proprietary solutions still dominate most analogue TV networks. They have grown and have been amended in the past to fulfil ever new requirement s. With the introduction of digital television, there is now a new chance to work towards a standardized approach for the management of such net
40、works. Within the DVB world, the Measurement Guidelines recommendation has developed into a quasi-standard in which most of the important tests and measurements have been defined. This creates a unique opportunity for a standardized solution for most network management tasks in DVB networks. The exp
41、erience of network management in the telecommunications world is available and can be used. Open software platforms for the network managers which can utilize the Management Information resident in the test equipment, are also available. Another great advantages could be the easy exchange of informa
42、tion between different network managers for different networks, especially in a scenario dominated by the convergence between the telecommunications world and the broadcast world. The final aim is that whatever equipment is used, the measurements and tests will be directly comparable to those with a
43、nother equipment. 4.2 The DVB Measurement Guidelines The recommendations for test and measurements in DVB systems were developed by the DVB Measurement Group. The first version was published by ETSI in 1997 as ETR 290 “Measurement Guidelines for DVB sytems“. A revised and amended version 1.2.1 was p
44、ublished by ETSI as TR 101 290 i in May 2001 under the same title. Here the experience with the implementation of tests and measurements in the first generation of instruments could be built on. In addition, further inputs came from the results of several European research projects as well as from t
45、he usage of T 2) reading the . . . Counter value at the start and end of a measurement period, then subtracting the values to find the number of errors in that period. . . .ActiveTime This is a monotonically increasing value in units of seconds that represents the total amount of time for which the
46、instrument has been able to perform a particular test or measurement. The existence of this attribute allows a management system to calculate a realistic errors per second value for any test. “Able to perform the test“ corresponds to the . . . State objects having the value pass or fail. Here are so
47、me reasons which might prevent the measuring equipment from perfonning the test: 1) because some more serious error condition (for example loss of input signal) means that the measuring equipment does not have the information it needs to perform the test; 2) because the measuring equipment is design
48、ed to operate in a polled mode where it looks at one input at a time for certain measurements; 3) because the measuring equipment has been placed in an inactive state by an operator. 6.5 Status error and Event error The TR 101 290 MIB classifies test failures into two categories, “Status error“ and
49、“Event error“. A “Status error“ is one whose padfail state is well defined at any point in time. For example, Transport Stream test 1.1, TS-sync-loss is is a “Status error“ because there are well defined transitions into and out of the loss of synchronization state. When the Transport Stream is synchronized, the test passes, when the Transport Stream is not synchronized the te st fails. An “Event error“ is defiied as the occurrence of a discrete event. For example, Transport Stream test 1.2, Syncbyte-error is an “Event error“ because an incorrect sync.
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