EN 50132-5-1-2011 en Alarm systems - CCTV surveillance systems for use in security applications - Part 5-1 Video transmission - General video transmission performance requirements .pdf

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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 50132-5-1:2011Alarm systems CCTV surveillance systems for use in security applicationsPart 5-1: Video transmission General video transmission performance requirementsIncorp

2、orating corrigendum July 2012BS EN 50132-5-1:2011National forewordThis British Standard is the UK implementation of EN 50132-5-1:2011, incorporating corrigendum July 2012. Together with BS EN 50132-5-2:2011 and BS EN 50132-5-3:2012, it supersedes BS EN 50132-5:2001, which is withdrawn.CENELEC corrig

3、endum July 2012 updates clause 3.1.28 and Table 2.The UK participation in its preparation was entrusted by Technical Committee GW/1, Electronic security systems, to Subcommittee GW/1/10, Closed circuit television (CCTV).A list of organizations represented on this subcommittee can be obtained on requ

4、est to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 73186 0Compliance with a British Standard can

5、not confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2012.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDICS 13.310; 33.160.40EUROPEAN STANDARD EN 50132-5-1 NO

6、RME EUROPENNE EUROPISCHE NORM December 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitatio

7、n in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50132-5-1:2011 E ICS 13.310; 33.160.40 English version Alarm systems - CCTV surveillance systems for use in security applications - Part 5-1: Video transmission - General video transmission performance requirements Sy

8、stmes dalarme Systmes de surveillance CCTV usage dans les applications de scurit - Partie 5-1:Exigences gnrales de performance pour la vidotransmission Alarmanlagen - CCTV-berwachungsanlagen fr Sicherungsanwendungen - Teil 5-1: Allgemeine Leistungsanforderungen an die Videobertragung This European S

9、tandard was approved by CENELEC on 2011-10-31. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references conc

10、erning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC m

11、ember into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Gre

12、ece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Incorporating corrigendum July 2012EN 50132-5-1:2011 (E) 2 Contents Page Foreword . 4 1 Scope 7 2 No

13、rmative references 7 3 Terms, definitions and abbreviations 7 3.1 Terms and definitions 7 3.2 Abbreviations . 19 4 Introduction 21 5 Performance requirements . 22 5.1 General 22 5.2 Network time services . 22 5.3 Video transmission timing requirements 23 5.4 Performance requirements on streaming vid

14、eo . 24 6 IP video transmission network design requirements 26 6.1 General 26 6.2 Overview . 27 6.3 Digital network planning . 27 6.4 Additional architecture principles 30 6.5 Network design 30 6.6 Replacement and redundancy 33 6.7 Centralized and decentralized network recording and video content an

15、alytics . 34 7 General IP requirements . 35 7.1 General 35 7.2 IP ISO Layer 3 35 7.3 Addressing . 35 7.4 Internet Control Message Protocol (ICMP) 36 7.5 Diagnostics . 37 7.6 IP multicast . 37 8 Video streaming requirements . 37 8.1 General 37 8.2 Transport protocol . 38 8.3 Documentation and specifi

16、cation 39 8.4 RTP introduction 39 8.5 RTP payload formats . 40 8.6 Streaming of metadata 45 9 Video stream control requirements . 48 9.1 General 48 9.2 Usage of RTSP in video transmission devices . 48 9.3 RTSP standards track requirements 49 BS EN 50132-5-1:2011EN 50132-5-1:2011 (E) 3 10 Device disc

17、overy and description requirements 50 11 Eventing requirements 50 12 Network device management requirements 51 12.1 General .51 12.2 General (informative) 51 12.3 MIB overview .52 12.4 Introduction .52 12.5 The SNMPv2 management framework requirements .53 12.6 Object definitions .53 12.7 The SNMP ag

18、ent and manager model for video transmission devices 54 12.8 CCTV SNMP trap requirements for event management .55 12.9 Security requirements SNMP 56 13 network security requirements .56 13.1 General .56 13.2 Transport level security requirements for SG4 transmission 56 Bibliography 58 Figures Figure

19、 1 network buffer. 24Figure 2 Network latency, jitter, loss . 28Figure 3 System design 30Figure 4 Small network . 31Figure 5 Multicast network . 31Figure 6 Hierarchical network 32Figure 7 Redundant network 34Figure 8 Video transport protocol stack . 39Figure 9 Overview of the protocol stack for RTP

20、transport 40Figure 10 KLV pack . 47Figure 11 MIB structure . 52Tables Table 1 Time service accuracy for video transport stream. 22Table 2 Interconnections Timing requirements 23Table 3 Video transmission network requirements . 23BS EN 50132-5-1:2011EN 50132-5-1:2011 (E) 4 Table 4 Video transmission

21、network requirements 23Table 5 Performance requirements video streaming and stream display 25Table 6 Video stream network packet jitter 26Table 7 Monitoring of interconnections . 26BS EN 50132-5-1:2011EN 50132-5-1:2011 (E) 5 Foreword This document (EN 50132-5-1:2011) has been prepared by CLC/TC 79,

22、“Alarm systems“. The following dates are fixed: latest date by which this document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2012-10-31 latest date by which the national standards conflicting with this document have to be withdra

23、wn (dow) 2014-10-31 This document, together with EN 50132-5-2 and future EN 50132-5-3, supersedes EN 50132-5:2001. This document introduces new general requirements on video transmission. EN 50132 consists of the following parts, under the generic title Alarm systems CCTV surveillance systems for us

24、e in security applications Part 1 System requirements Part 5-1 General video transmission performance requirements Part 5-2 IP video transmission protocols Part 5-3 Video transmission Analog and digital video transmission Part 7 Application guidelines Attention is drawn to the possibility that some

25、of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. BS EN 50132-5-1:2011EN 50132-5-1:2011 (E) 6 Introduction The European Electrotechnical Standardisation Organisation for alarm systems

26、together with many governmental organisations, test houses and equipment manufacturers has defined a common framework for surveillance video transmission in order to achieve interoperability between products. This video transmission standard is divided into 3 independent parts and sections: Part 1:

27、General video transmission performance requirements Part 2: IP video transmission protocols Part 3: Analog and digital video transmission Each part offers its own clauses on scope, references, definitions, requirements. The purpose of the transmission system in a closed circuit television (CCTV) ins

28、tallation is to provide reliable transmission of video signals between the different types of CCTV equipment in security, safety and monitoring applications. Today CCTV surveillance systems reside in security networks using IT infrastructure, equipment and connections within the protected site itsel

29、f. BS EN 50132-5-1:2011EN 50132-5-1:2011 (E) 7 1 Scope This European Standard introduces general requirements on video transmission. A detailed specification on analog video transmission over different media including signal and performance requirements is already defined in prEN 50132-5-3. For the

30、growing number of surveillance applications based on IP video transmission the requirements are defined in 2 standards. This standard covers in the following clauses the general requirements for video transmissions on performance, security and conformance to basic IP connectivity, based on available

31、, well-known, international standards. In areas where more detailed IP requirements are necessary additional specifications are given, in order to reach compatibility. In this European Standard no detailed and special CCTV protocols are defined. In Part 2 of this European Standard, a detailed video

32、IP protocol, messages and commands on top of the general connectivity and performance requirements of Part 1 are defined. Part 2 defines an IP protocol for full interoperability (e.g. PTZ control, eventing, etc.) of video transmission devices used in surveillance applications. The first section of t

33、his standard defines the minimum performance requirements on video transmission for security applications in IP networks. In surveillance applications, the requirements on timing, quality and availability are strict and defined in the last section of this standard. Guidelines for network architectur

34、e on how these requirements can be fulfilled are given. The second section of this European Standard defines requirements on basic IP connectivity of video transmission devices to be used in security applications. If a video transmission device is used in security, certain basic requirements apply.

35、First of all a basic understanding of IP connectivity needs to be introduced which requests the device to be compliant to fundamental network protocols. These could be requirements which may be applied to all IP security devices even beyond IP video. For this reason, requirements are introduced in a

36、 second step for compliance to basic streaming protocols, used in this standard for video streaming and stream control. Since security applications need high availability and reliability, general means for the transmission of the video status and health check events need to be covered. Theses are de

37、fined in general requirements on eventing and network device management. In security proper maintenance and setup is essential for the functioning of the video transmission device: Locating streaming devices and their capabilities is a basic requirement and covered in “device discovery and descripti

38、on“. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50132-1, Alarm sys

39、tems CCTV surveillance systems for use in security applications Part 1: System requirements EN 50132-7, Alarm systems CCTV surveillance systems for use in security applications Part 7: Application guidelines 3 Terms, definitions and abbreviations 3.1 Terms and definitions For the purposes of this do

40、cument, the following terms and definitions apply. 3.1.1 adaptive jitter buffering queuing of packet s in switched networks exposed to unwanted variations in the communications signal to ensure the continuous video transmission over a network supported by the “Adaptive“ ability to adjust the size of

41、 the jitter buffer based on the measured jitter in the network BS EN 50132-5-1:2011EN 50132-5-1:2011 (E) 8 EXAMPLE If the jitter increases, the buffer becomes larger and can store more packets; if the jitter decreases, the buffer becomes smaller and stores fewer packets. 3.1.2 advanced Encryption St

42、andard (AES) NIST encryption standard, also known as Rijndael, specified as unclassified, publicly-disclosed, symmetric encryption algorithm with a fixed block size of 128 bits and a key size of 128 bits, 192 bits or 256 bits according to the Federal Information Processing Standards Publication 197

43、3.1.3 ASCII (American Standard Code for Information Interchange) de-facto world-wide standard for the code numbers used by computers to represent all the upper and lower-case characters 3.1.4 asymmetric algorithm algorithm used in the asymmetric cryptography, in which a pair of keys (a private key a

44、nd a public key) is used to encrypt and decrypt a message to ensure the privacy of communications 3.1.5 authentication process where an operators or systems identity is checked within a network EXAMPLE In networks, authentication is commonly done using logon passwords. 3.1.6 authentication server de

45、vice used in network access control which stores the usernames and passwords that identify the clients logging on or which may hold the algorithms for access NOTE For access to specific network resources, the server may itself store user permissions and company policies or provide access to director

46、ies that contain the information. Protocols such as RADIUS, Kerberos and TACACS+, and 802.1x are implemented in an authentication server to perform user authentications. 3.1.7 authenticity integrity and trustworthiness of data or an entity; validity and conformance of the information, or identity of

47、 a user NOTE The authenticity can be secured and verified using cryptographic methods. 3.1.8 authorization approval, permission, or empowerment for a user or a component to do something 3.1.9 backbone high-speed line or series of connections that forms a major pathway within a network 3.1.10 backbon

48、e layer larger transmission line that carries data gathered from smaller communication lines that interconnect with it, e.g. a line or set of lines that local area networks connect to, in order to span distances efficiently e.g. between buildings 3.1.11 Bits-per-Second (BpS) unit or measurement of h

49、ow fast data is transferred from one node to another BS EN 50132-5-1:2011EN 50132-5-1:2011 (E) 9 3.1.12 bridge device used to connect two networks including passing data packets between them using the same protocols 3.1.13 certificate authority issuer of security certificates used in SSL connections 3.1.14 client component that contacts and obtains data from a server 3.1.15 client/server communication system providing services like video streams, storage, logon access, data