ETSI TS 102 606-2-2016 Digital Video Broadcasting (DVB) Generic Stream Encapsulation (GSE) Part 2 Logical Link Control (LLC) (V1 2 1)《数字视频广播(DVB) 通用流封装(GSE) 第2部分 逻辑链路控制(LLC)(V1 2 1.pdf

1、 ETSI TS 102 606-2 V1.2.1 (2016-12) Digital Video Broadcasting (DVB); Generic Stream Encapsulation (GSE); Part 2: Logical Link Control (LLC) TECHNICAL SPECIFICATION ETSI ETSI TS 102 606-2 V1.2.1 (2016-12)2 Reference RTS/JTC-DVB-366 Keywords broadcasting, DVB ETSI 650 Route des Lucioles F-06921 Sophi

2、a Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The pre

3、sent document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such vers

4、ions and/or in print, the only prevailing document is the print of the Portable Document Format (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 c

5、urrent status of this and other ETSI documents is available at https:/portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, please send your comment to one of the following services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No

6、 part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the fo

7、regoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2016. European Broadcasting Union 2016. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Tra

8、de Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 102 606-2 V1.2.1 (2016-12)3 Contents Intellectual Property Rights 5g3Foreword . 5g3Modal verbs terminolog

9、y 5g3Introduction 6g31 Scope 8g32 References 8g32.1 Normative references . 8g32.2 Informative references 9g33 Symbols and abbreviations . 10g33.1 Symbols 10g33.2 Abbreviations . 10g34 Overview 11g35 Protocol Elements 11g35.0 LLC protocol architecture 11g35.1 Record Structures . 13g35.1.1 Index Struc

10、ture 13g35.1.1.0 Index structure syntax and semantics 13g35.1.1.1 Offset Mechanism . 13g35.1.2 Link Control Data (LCD) records table 14g35.1.3 Network Control Data (NCD) records table . 15g35.1.3.0 NCD records table syntax and carriage . 15g35.1.3.1 Platform descriptors 15g35.1.3.2 Target descriptor

11、s 15g35.1.3.3 Operational descriptors . 15g35.2 Descriptors . 16g35.2.1 Descriptor identification and location . 16g35.2.2 Descriptor coding 17g35.2.2.1 Application system descriptor . 17g35.2.2.1.0 Application system descriptor syntax and semantics. 17g35.2.2.1.1 OMA BCAST info 17g35.2.2.2 C2 PHY d

12、escriptor 19g35.2.2.2.1 Descriptor syntax and semantics . 19g35.2.2.2.2 Link association descriptor selector fields content 20g35.2.2.3 DHCPv4 options descriptor 20g35.2.2.3.0 DHCPv4 options descriptor syntax and semantics 20g35.2.2.3.1 DHCPv4 options profile 21g35.2.2.4 DHCPv6 options descriptor 22

13、g35.2.2.4.0 DHCPv6 options descriptor syntax and semantics 22g35.2.2.4.1 DHCPv6 options profile 23g35.2.2.5 IP/MAC generic stream location descriptor 24g35.2.2.6 IP/MAC link location descriptor . 24g35.2.2.7 IP/MAC stream location descriptor . 24g35.2.2.8 Link association descriptor . 25g35.2.2.9 NG

14、H PHY descriptor 26g35.2.2.10 ROHC-U descriptor 29g35.2.2.11 S2 PHY descriptor 30g35.2.2.12 S2X PHY descriptor 31g35.2.2.12.1 Descriptor syntax and semantics . 31g35.2.2.12.2 Link association descriptor selector fields content 32g35.2.2.13 T2 PHY descriptor 33g35.2.2.14 URI descriptor . 34g35.2.3 Ru

15、les for future extensibility of descriptors 35g3ETSI ETSI TS 102 606-2 V1.2.1 (2016-12)4 6 Transport in GSE Packets. 36g36.0 Carriage in extension headers . 36g36.1 GSE Header Fields . 36g36.1.1 Start Indicator and End Indicator 36g36.1.2 Label Type Indicator . 36g36.1.3 Protocol Type 36g36.1.4 Exte

16、nsion Header Byte . 36g36.1.5 PDU Data Byte . 37g36.2 GSE Table Structure Fields 37g36.2.0 General 37g36.2.1 Table ID 37g36.2.2 Interactive Network ID . 37g36.2.3 Version Number and Current/Next Indicator 37g36.3 Combining Streams From Different Interactive Networks . 37g37 Deployment Profiles . 38g

17、37.1 Bi-directional interface emulation 38g37.2 Generic network service profile . 38g37.3 Application system profile . 39g37.3.0 General use of the application system profile . 39g37.3.1 OMA BCAST system profile 39g3Annex A (informative): Examples . 40g3A.1 Carriage of LLC data in extension headers

18、40g3A.2 Finding the size of the last table . 41g3A.3 Underlying data model . 42g3A.4 Use of Link Control Data . 45g3A.4.1 Carriage of Links on different physical layers . 45g3A.4.2 Use of physical layer channel aggregation modes 46g3A.4.2.1 DVB-C2 channel bundling . 46g3A.4.2.2 DVB-S2X channel bondi

19、ng and time slicing 47g3Annex B (informative): Change History 49g3History 50g3ETSI ETSI TS 102 606-2 V1.2.1 (2016-12)5 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 a

20、ny, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available

21、on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or

22、may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by Joint Technical Committee (JTC) Broadcast of the European Broadcasting Union (EBU), Comit Europen de Normalisation ELECtrotechnique (CENELEC) and the European Telecommunications

23、Standards Institute (ETSI). NOTE: The EBU/ETSI JTC Broadcast was established in 1990 to co-ordinate the drafting of standards in the specific field of broadcasting and related fields. Since 1995 the JTC Broadcast became a tripartite body by including in the Memorandum of Understanding also CENELEC,

24、which is responsible for the standardization of radio and television receivers. The EBU is a professional association of broadcasting organizations whose work includes the co-ordination of its members activities in the technical, legal, programme-making and programme-exchange domains. The EBU has ac

25、tive members in about 60 countries in the European broadcasting area; its headquarters is in Geneva. European Broadcasting Union CH-1218 GRAND SACONNEX (Geneva) Switzerland Tel: +41 22 717 21 11 Fax: +41 22 717 24 81 The Digital Video Broadcasting Project (DVB) is an industry-led consortium of broad

26、casters, manufacturers, network operators, software developers, regulatory bodies, content owners and others committed to designing global standards for the delivery of digital television and data services. DVB fosters market driven solutions that meet the needs and economic circumstances of broadca

27、st industry stakeholders and consumers. DVB standards cover all aspects of digital television from transmission through interfacing, conditional access and interactivity for digital video, audio and data. The consortium came together in 1993 to provide global standardization, interoperability and fu

28、ture proof specifications. The present document is part 2 of a multi-part deliverable covering the Digital Video Broadcasting (DVB); Generic Stream Encapsulation (GSE), as identified below: Part 1: “Protocol“; Part 2: “Logical Link Control (LLC)“; Part 3: “Robust Header Compression (ROHC) for IP“. M

29、odal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ ar

30、e NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 102 606-2 V1.2.1 (2016-12)6 Introduction As introduced in ETSI TS 102 606-1 1, the Generic Stream Encapsulation (GSE) protocol is a link layer which provides multiplexing mechanisms that make it possible for several

31、 network protocols (for example IP, IPX, Decnet, and Appletalk) to coexist within a multipoint network and to be transported over the same network media. GSE is designed to be deployed across all DVB broadcast bearers which provide a Generic Stream mode. Figure 1: Role of DVB-GSE across broadcast be

32、arers This abstraction from the MAC layer allows to provision services on top of network protocols independently of the underlying physical layer. This is illustrated from a network operators perspective in Figure 1, and from a protocol stack perspective in Figure 2. Figure 2: Protocol layers when u

33、sing DVB-GSE As shown in Figure 2, the DVB-GSE link layer hides any MAC layer specifics from the upper layers. It thus enables receivers to present DVB-GSE streams as regular, LAN-type network interfaces to upper layers. The logical link control protocol defined in the present document provides the

34、necessary information to receivers to accomplish this. ETSI ETSI TS 102 606-2 V1.2.1 (2016-12)7 On a Point-to-Point Protocol (PPP) link according to IETF RFC 1661 i.3, two hosts establish a connection on any point-to-point serial interface (e.g. RS-232), and exchange IP datagrams. The PPP implementa

35、tion encapsulates this link as a normal network interface, so that applications can use it as if it were a regular LAN interface. To achieve this, a Link Control Protocol (LCP) for establishing, configuring, and testing the data-link connection, and a family of Network Control Protocols (NCPs) for e

36、stablishing and configuring different network-layer protocols is defined in IETF RFC 1661 i.3. When the connection establishment begins, the two hosts first use the LCP to negotiate the configuration parameters (e.g. link speed) of the serial data link. After this is completed, the two hosts use the

37、 appropriate NCPs to negotiate the configuration of the network interface (e.g. use of IPv4 or IPv6, IP addresses to use), and thus conclude the connection establishment phase. After this, the hosts present new LAN-type network interfaces to applications running on them. The LLC protocol for DVB-GSE

38、 adopts the same partitioning of information. One set of information is needed to enable the DVB-GSE layer to configure the underlying MAC and physical layer devices. This first set of information is referred to as Link Control Data (LCD) in the present document. A second set of information is neede

39、d to configure the network interfaces which represent the DVB-GSE streams and make them available for the upper layers. This second set of information is referred to as Network Control Data (NCD) in the present document. Figure 3: Application programming model of DVB-GSE with LLC Once these network

40、interfaces have been made available to the upper layers (see Figure 3), the properties of the MAC and physical layers are no longer exposed to upper layers, and applications can act on these interfaces like on any other network interface. Use of the tunnelling mechanism defined in IETF RFC 3077 11 i

41、n combination with a return channel allows for the interfaces to be used for reading and writing. ETSI ETSI TS 102 606-2 V1.2.1 (2016-12)8 1 Scope The present document specifies a Logical Link Control (LLC) method to be used on DVB streams where the Generic Stream Encapsulation (GSE) 1 protocol is u

42、sed as the link layer. 2 References 2.1 Normative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the ref

43、erenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot gua

44、rantee their long term validity. The following referenced documents are necessary for the application of the present document. 1 ETSI TS 102 606-1: “Digital Video Broadcasting (DVB); Generic Stream Encapsulation (GSE); Part 1: Protocol“. 2 ETSI TS 102 606-3: “Digital Video Broadcasting (DVB); Generi

45、c Stream Encapsulation (GSE); Part 3: Robust Header Compression (ROHC) for IP“. 3 ETSI EN 301 192: “Digital Video Broadcasting (DVB); DVB specification for data broadcasting“. 4 ETSI EN 301 545-2: “Digital Video Broadcasting (DVB); Second Generation DVB Interactive Satellite System (DVB-RCS2); Part

46、2: Lower Layers for Satellite standard“. 5 ETSI EN 300 468: “Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems“. 6 ETSI TS 101 162: “Digital Video Broadcasting (DVB); Allocation of identifiers and codes for Digital Video Broadcasting (DVB) systems“. 7 IETF R

47、FC 2131: “Dynamic Host Configuration Protocol“. 8 IETF RFC 2132: “DHCP Options and BOOTP Vendor Extensions“. NOTE: A complete list of all DHCP options defined by various sources is available from IANA at http:/www.iana.org/assignments/bootp-dhcp-parameters/bootp-dhcp-parameters.xml. 9 IETF RFC 5795:

48、 “The Robust Header Compression (ROHC) Framework“. 10 IETF RFC 3095: “Robust Header Compression (ROHC): Framework and four profiles: RTP, UDP, ESP, and uncompressed“. 11 IETF RFC 3077: “A Link-Layer Tunneling Mechanism for Unidirectional Links“. 12 ETSI EN 302 769: “Digital Video Broadcasting (DVB);

49、 Frame structure channel coding and modulation for a second generation digital transmission system for cable systems (DVB-C2)“. 13 ETSI EN 302 755: “Digital Video Broadcasting (DVB); Frame structure channel coding and modulation for a second generation digital terrestrial television broadcasting system (DVB-T2)“. 14 ETSI EN 302 307-1: “Digital Video Broadcasting (DVB); Second generation framing structure, channel coding and modulation systems for Broadcasting, Interactive Services, News Gathering and other broadband satellite appli