IEC 62481-3:2017

IEC 62481-3 ®
Edition 3.0 2017-07
INTERNATIONAL
STANDARD
colour
inside
Digital living network alliance (DLNA) home networked device interoperability
guidelines –
Part 3: Link protection
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IEC 62481-3 ®
Edition 3.0 2017-07
INTERNATIONAL
STANDARD
colour
inside
Digital living network alliance (DLNA) home networked device interoperability

guidelines –
Part 3: Link protection
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160; 35.100.05; 35.110 ISBN 978-2-8322-4541-5

– 2 – IEC 62481-3:2017 © IEC 2017

CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions, abbreviated terms and conventions . 9
3.1 Terms and definitions . 9
3.3 Conventions . 14
4 DLNA home network architecture . 14
5 DLNA device model . 15
6 Guideline terminology and conventions . 15
7 Common Link Protection guidelines . 15
7.1 General . 15
7.2 Conditions for measuring time in message exchanges . 15
7.3 Networking and connectivity . 15
7.4 Device discovery and control . 15
7.5 Media management. 15
7.5.1 General . 15
7.5.2 Updates to existing general AV Media Management guidelines . 18
7.5.3 New general AV Media Management guidelines . 18
7.5.4 MediaRenderer device guidelines . 22
7.6 Media Transport . 22
7.6.1 General . 22
7.6.2 Updates to existing general Media Transport guidelines . 23
7.6.3 New general Media Transport guidelines . 23
7.6.4 HTTP transport . 24
7.6.5 Updates to existing general HTTP Media Transport guidelines . 24
7.6.6 New general HTTP Media Transport guidelines . 29
7.6.7 Updates to existing general HTTP Media Transport for Streaming
Transfer guidelines . 33
7.6.8 MT RANGE behaviour for Interactive Transferred Content . 37
7.6.9 RTP transport . 37
7.6.10 Update existing general RTP Transport guidelines . 37
7.6.11 New general RTP Transport guidelines: MT: RTP support for link
protected content . 38
7.7 Content conversion device virtualization . 38
7.8 Link Protection technology guidelines . 38
7.8.1 Link Protection System: DTCP-IP . 38
7.8.2 Link Protection System: Windows Media DRM for network Devices . 40
8 DTCP-IP Link Protection System guidelines . 41
8.1 General . 41
8.2 CP DTCP-IP general guidelines . 41
8.3 Networking and connectivity . 41
8.3.1 General . 41
8.3.2 New DLNAQOS guidelines: QoS requirement for DTCP-IP traffic . 41
8.3.3 New common device guidelines: NC CP: wireless security . 42
8.4 Device discovery and control . 42

8.5 Media Management. 42
8.5.1 General . 42
8.5.2 MM CP: DTCP-IP URI . 42
8.5.3 MM CP: mandatory media operations . 43
8.6 Media Transport . 43
8.6.1 HTTP transport . 43
8.6.2 RTP transport . 47
8.7 Content conversion device virtualization . 49
8.8 Volume 2: DTCP-IP profiling guidelines . 49
8.8.1 General . 49
8.8.2 CP DTCP-IP: profile. 49
8.8.3 CP DTCP-IP: profile MIME type definition . 50
8.8.4 CP DTCP-IP: profile protected and unprotected content portions . 51
8.8.5 CP DTCP-IP: profile HTTP encapsulation . 52
8.8.6 DTCP-IP profile encapsulation . 52
9 WMDRM-ND Link Protection System guidelines . 55
9.1 Overview. 55
9.2 General guidelines . 55
9.2.1 CP WMDRM-ND: guidelines . 55
9.2.2 CP WMDRM-ND: support for HTTP. 55
9.2.3 CP WMDRM-ND: support for RTP . 56
9.2.4 CP WMDRM-ND: Registration and Revalidation procedures . 57
9.2.5 CP WMDRM-ND: discovery of Content Receivers . 58
9.3 Networking and connectivity . 58
9.3.1 General . 58
9.3.2 CP WMDRM-ND: QoS guidelines . 58
9.4 Device discovery and control . 58
9.4.1 General . 58
9.4.2 CP WMDRM-ND: additional rules for DMRs . 59
9.5 Media management. 59
9.6 Media Transport . 59
9.6.1 HTTP transport . 59
9.6.2 RTP transport . 64
9.7 Content conversion device virtualization . 67
9.8 Volume 2: WMDRM-ND profiling guidelines . 68
9.8.1 General . 68
9.8.2 CP WMDRM-ND: identification of content transferred using WMDRM-ND
9.8.3 CP WMDRM-ND: Media Format guidelines . 68
9.8.4 CP WMDRM-ND: MIME type . 69
9.8.5 CP WMDRM-ND: Decoder Friendly Alignment Position . 69
9.8.6 CP WMDRM-ND: Media Format Alignment Element . 69
Annex A (informative) An introduction to DLNA seek operations . 70
A.1 General . 70
A.2 UCDAM and seek operations . 70
A.3 Seek models . 71
A.4 Full Random Access Data Availability . 71
A.5 Limited Random Access Data Availability . 73
A.6 Seek operations on link protected content . 76

– 4 – IEC 62481-3:2017 © IEC 2017

Figure A.1 – UCDAM definitions for seek operations . 71
Figure A.2 – Full Random Access Data Availability model . 72
Figure A.3 – Limited Random Access Data Availability model Mode 0 . 74
Figure A.4 – Limited random access data availability model mode 1 . 75
Figure A.5 – Content flow
...