1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T H.627.1 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (03/2017) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Broadband, triple-play and advanced multimedia services Advanced multimedia services and applications Protocols
2、for mobile visual surveillance Recommendation ITU-T H.627.1 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.229 Syst
3、ems 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 service arc
4、hitecture for audiovisual and multimedia services H.360H.369 Telepresence H.420H.429 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 system
5、s and services H.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.559 Mobile multimedi
6、a collaboration inter-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 Ubiquitous sensor network applications and Internet of Things H.640H.649 IPTV MULTIM
7、EDIA SERVICES AND APPLICATIONS FOR IPTV General aspects H.700H.719 IPTV terminal devices H.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 Dig
8、ital Signage H.780H.789 E-HEALTH MULTIMEDIA SERVICES AND APPLICATIONS Personal health systems H.810H.819 Interoperability compliance testing of personal health systems (HRN, PAN, LAN, TAN and WAN) H.820H.859 Multimedia e-health data exchange services H.860H.869 For further details, please refer to t
9、he list of ITU-T Recommendations. Rec. ITU-T H.627.1 (03/2017) i Recommendation ITU-T H.627.1 Protocols for mobile visual surveillance Summary Recommendation ITU-T H.627.1 describes the detailed specification of reference points, message flows control methods and overall protocols of a mobile visual
10、 surveillance system based on the requirements described in Recommendation ITU-T F.743 and functional architecture described in Recommendation ITU-T H.626.1. This Recommendation focuses on the protocols of a visual surveillance system with mobile units and the services related to mobile units, such
11、as a mobile customer unit accessing real-time video stream from a visual surveillance system. This Recommendation defines reference points, message syntax and semantics and relevant protocols. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T H.627.1 2017-03-01 16 11.1002/1000
12、/13191 Keywords Message flows, mobile visual surveillance, protocols, reference points. * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii
13、Rec. ITU-T H.627.1 (03/2017) FOREWORD The 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.
14、ITU-T is responsible for studying technical, 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
15、study by the ITU-T study groups which, in 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
16、 a collaborative basis with ISO and IEC. 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 conta
17、in certain mandatory provisions (to ensure, 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
18、requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property
19、Right. ITU takes no position concerning the 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 inte
20、llectual property, protected by patents, which 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 2017 All ri
21、ghts reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T H.627.1 (03/2017) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendat
22、ion . 3 4 Abbreviations and acronyms 3 5 Conventions 4 6 Message syntax and semantics . 4 6.1 Reference point Cms: CMU-MSP 5 6.2 Reference point Msm: MSP-M_CU . 10 6.3 Reference point Psm: M_CU- PSS . 13 6.4 Reference point Vm: M_CU- VAU . 15 6.5 Reference point Mv: M_CU-VAU . 17 6.6 Reference point
23、 Vp: VAU-PSS 19 6.7 Reference points Mdv/Pv/Vs:VAU-VS system . 21 7 Message flows 21 7.1 Real-time video/audio acquisition 21 7.2 Recording and playback . 22 7.3 PTZ control . 26 7.4 Resource query . 27 7.5 Service management . 28 Bibliography. 30 Rec. ITU-T H.627.1 (03/2017) 1 Recommendation ITU-T
24、H.627.1 Protocols for mobile visual surveillance 1 Scope This Recommendation focuses on the protocols of a visual surveillance system with mobile units and the services related to mobile units, such as a mobile customer unit accessing real-time video stream from a visual surveillance system. This Re
25、commendation defines the reference points and focuses on the protocols for a mobile visual surveillance system, based on the architecture defined in ITU-T H.626.1. Furthermore, this Recommendation utilizes and extends some existing protocols such as session initiation protocol (SIP), real-time trans
26、port protocol (RTP), real-time streaming protocol (RTSP) and hypertext transfer protocol (HTTP) and also defines the message format and text. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this
27、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 Recommendations and other r
28、eferences 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 F.743 Recommendation ITU-T F.743 (2009), Requirements and serv
29、ice description for visual surveillance. ITU-T H.626 Recommendation ITU-T H.626 (2011), Architectural requirements for visual surveillance. ITU-T H.626.1 Recommendation ITU-TH.626.1 (2013), Architecture for mobile visual surveillance. ITU-T H.627 Recommendation ITU-T H.627 (2012), Signalling and pro
30、tocols for visual surveillance. IETF RFC 3261 IETF RFC 3261 (2002), SIP: Session Initiation Protocol. https:/datatracker.ietf.org/doc/rfc3261/ IETF RFC 3550 IETF RFC 3550 (2003), RTP: A Transport Protocol for Real-Time Applications. https:/datatracker.ietf.org/doc/rfc3550/ IETF RFC 7231 IETF RFC 723
31、1 (2014), Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content. https:/datatracker.ietf.org/doc/rfc7231/ IETF RFC 7826 IETF RFC 7826 (2016), Real-Time Streaming Protocol Version 2.0. https:/datatracker.ietf.org/doc/rfc7826/ 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses
32、the following terms defined elsewhere: 3.1.1 application b-ITU-T Y.101: A structured set of capabilities, which provide value-added functionality supported by one or more services. 2 Rec. ITU-T H.627.1 (03/2017) 3.1.2 customer b-ITU-T M.60: A customer is an entity which receives services offered by
33、a service provider based on a contractual relationship. It may include the role of a network user. 3.1.3 customer unit ITU-T H.626: A device located at the customer part of a visual surveillance system and used to present multimedia information (such as audio, video, image, alarm signal, etc.) to th
34、e end user. 3.1.4 functional architecture b-ITU-T Y.2012: A set of functional entities and the reference points between them used to describe the structure of an NGN. These functional entities are separated by reference points, and thus they define the distribution of functions. NOTE The functional
35、entities can be used to describe a set of reference configurations. These reference configurations identify which reference points are visible at the boundaries of equipment implementations and between administrative domains. 3.1.5 interface b-ITU-T Y.101: A shared boundary between two functional un
36、its. 3.1.6 media b-ITU-T Y.101: Plural of medium. 3.1.7 medium b-ITU-T Y.101: Specific physical support for transmission or storage of information. Type of presentation of information (i.e., video, audio, text, etc.). 3.1.8 mobile customer unit (M_CU) ITU-T H.626.1: Mobile client software installed
37、in customers mobile devices. The M_CU is used to initiate the service and provide customers with video viewing. 3.1.9 mobile service portal (MSP) ITU-T H.626.1: A series of devices and subsystems located at the central part of a mobile visual surveillance system. The MSP is the business application
38、platform of the mobile visual surveillance system. Its main functions include a unified access entrance to the business entrance of user authentication and the display list of users monitoring permissions. The MSP can carry out user authentication, query the list of monitoring permissions, synchroni
39、ze user account information, and assist service management through the exchange of information with the centre management unit (CMU). 3.1.10 reference point b-ITU-T Y.2012: A conceptual point at the conjunction of two non-overlapping functional entities that can be used to identify the type of infor
40、mation passing between these functional entities. NOTE A reference point may correspond to one or more physical interfaces between pieces of equipment. 3.1.11 service b-ITU-T Y.101: A structure set of capabilities intended to support applications. 3.1.12 packet-switched streaming service (PSS) ITU-T
41、 H.626.1: A device located at the central part of a mobile visual surveillance system. The PSS is the stream media server and processes media stream distribution between the M_CU and the VAU. The main functions of PSS include responding to the service request message sent by M_CU, getting the real-t
42、ime media stream from VAU and distributing the stream to multiple M_CUs. 3.1.13 premises unit ITU-T H.626: A device located at the remote part of a visual surveillance system and used to capture multimedia information (such as audio, video, image, alarm signal, etc.) from a surveilled object. 3.1.14
43、 video access unit (VAU) ITU-T H.626.1: A device located at the central part of a mobile visual surveillance system. The VAU is used to implement communication between the mobile customer unit (M_CU) and the units defined in ITU-T H.626. The VAUs main functions include: requesting the CMU for schedu
44、ling information to be used to establish the media session between the media distribution unit (MDU) and the packet-switched streaming service (PSS), processing requests from the agent mobile customer unit for control of pan/tilt/zoom (PTZ) and distributing and transcoding multimedia data. Rec. ITU-
45、T H.627.1 (03/2017) 3 3.1.15 visual surveillance ITU-T H.626: A telecommunication service focusing on video (but including audio) application technology, which is used to remotely capture multimedia (such as audio, video, image, alarm signal, etc.) and present them to the end user in a user-friendly
46、 manner, based on a managed broadband network with ensured quality, security and reliability. 3.2 Terms defined in this Recommendation None. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: CDMA Code Division Multi Access CMU Centre Management Unit CU C
47、ustomer Unit GW Gateway HTTP HyperText Transfer Protocol ID Identification IP Internet Protocol IPC IP Camera M_CU Mobile Customer Unit MDN Mobile Directory Number MDU Media Distribution Unit MIB Management Information Base MSP Mobile Service Portal NGN Next Generation Network NVR Network Video Reco
48、rder PSS Packet-switched streaming service PTZ Pan/Tilt/Zoom PU Premises Unit PUID Premises Unit Identifier R/W Read/Write RTCP Real-time Transport Control Protocol RTP Real-time Transport Protocol RTSP Real-time Streaming Protocol SCU Service Control Unit SIP Session Initiation Protocol SOAP Simple
49、 Object Access Protocol TCP Transmission Control Protocol UDP User Datagram Protocol URL Uniform Resource Locator 4 Rec. ITU-T H.627.1 (03/2017) UTF-8 8-bit Unicode Transformation Format VAU Video Access Unit VS Visual Surveillance WAP Wireless Application Protocol XML Extensible Markup Language 5 Conventions In this Recommendation, “String“ is a data type used to describe a sequence of characters in UTF-8 format. “Integer“ is a datum of integral data type that represents an 8-bit s
