1、 ETSI TS 102 606-2 V1.1.1 (2014-07) Digital Video Broadcasting (DVB); Generic Stream Encapsulation (GSE); Part 2: Logical Link Control (LLC) TECHNICAL SPECIFICATION ETSI ETSI TS 102 606-2 V1.1.1 (2014-07)2Reference DTS/JTC-DVB-338-2 Keywords broadcasting, DVB ETSI 650 Route des Lucioles F-06921 Soph
2、ia 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 The present document ma
3、y 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 versions and/or in p
4、rint, 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 current status of
5、 this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced or utilize
6、d 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 foregoing restriction extend to repr
7、oduction in all media. European Telecommunications Standards Institute 2014. European Broadcasting Union 2014. 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 Trade Marks of ETSI registered for th
8、e 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 V1.1.1 (2014-07)3Contents Intellectual Property Rights 5g3Foreword . 5g3Modal verbs terminology 5g3Introduction 6g31 Scope 8g32 R
9、eferences 8g32.1 Normative references . 8g32.2 Informative references 9g33 Symbols and abbreviations . 10g33.1 Symbols 10g33.2 Abbreviations . 10g34 Overview 10g35 Protocol Elements 11g35.1 Record Structures . 12g35.1.1 Index Structure 12g35.1.1.1 Offset Mechanism . 13g35.1.2 Link Control Data (LCD)
10、 records table 14g35.1.3 Network Control Data (NCD) records table . 14g35.1.3.1 Platform descriptors 15g35.1.3.2 Target descriptors 15g35.1.3.3 Operational descriptors . 15g35.2 Descriptors . 15g35.2.1 Descriptor identification and location . 15g35.2.2 Descriptor coding 16g35.2.2.1 Application syste
11、m descriptor . 16g35.2.2.1.1 OMA BCAST info 17g35.2.2.2 C2 PHY descriptor 18g35.2.2.3 DHCPv4 options descriptor 19g35.2.2.3.1 DHCPv4 options profile 20g35.2.2.4 DHCPv6 options descriptor 21g35.2.2.4.1 DHCPv6 options profile 22g35.2.2.5 IP/MAC generic stream location descriptor 22g35.2.2.6 IP/MAC lin
12、k location descriptor . 23g35.2.2.7 IP/MAC stream location descriptor . 23g35.2.2.8 Link association descriptor . 23g35.2.2.9 NGH PHY descriptor 24g35.2.2.10 ROHC-U descriptor 27g35.2.2.11 S2 PHY descriptor 28g35.2.2.12 T2 PHY descriptor 29g35.2.2.13 URI descriptor . 30g35.2.3 Rules for future exten
13、sibility of descriptors 31g36 Transport in GSE Packets. 31g36.1 GSE Header Fields . 32g36.1.1 Start Indicator and End Indicator 32g36.1.2 Label Type Indicator . 32g36.1.3 Protocol Type 32g36.1.4 Extension Header Byte . 32g36.1.5 PDU Data Byte . 32g36.2 GSE Table Structure Fields 33g36.2.1 Table ID 3
14、3g36.2.2 Interactive Network ID . 33g3ETSI ETSI TS 102 606-2 V1.1.1 (2014-07)46.2.3 Version Number and Current/Next Indicator 33g36.3 Combining Streams From Different Interactive Networks . 33g37 Deployment Profiles . 33g37.1 Bi-directional interface emulation 33g37.2 Generic network service profile
15、 . 34g37.3 Application system profile . 34g37.3.1 OMA BCAST system profile 35g3Annex A (informative): Examples . 36g3A.1 Carriage of LLC data in extension headers 36g3A.2 Finding the size of the last table . 37g3A.3 Underlying data model . 38g3History 40g3ETSI ETSI TS 102 606-2 V1.1.1 (2014-07)5Inte
16、llectual 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 000 314: “Intellectual Property Rig
17、hts (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 on the ETSI Web server (http:/ipr.etsi.org). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has
18、 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 may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by Joi
19、nt Technical Committee (JTC) Broadcast 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
20、 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, which is responsible for the standardization of radio and television receivers. The EBU is a professional association of broa
21、dcasting organizations 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 Un
22、ion 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 broadcasters, manufacturers, network operators, software developers, regulatory bodies, content owners and others committed to des
23、igning global standards for the delivery of digital television and data services. DVB fosters market driven solutions that meet the needs and economic circumstances of broadcast industry stakeholders and consumers. DVB standards cover all aspects of digital television from transmission through inter
24、facing, conditional access and interactivity for digital video, audio and data. The consortium came together in 1993 to provide global standardisation, interoperability and future proof specifications. The present document is part 2 of a multi-part deliverable covering the Digital Video Broadcasting
25、 (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“. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “may not“, “need“, “need
26、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“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 102 606-2 V1.1.1 (201
27、4-07)6Introduction As introduced in part 1 1, the Generic Stream Encapsulation (GSE) protocol is a link layer which provides multiplexing mechanisms that make it possible for several network protocols (for example IP, IPX, Decnet and Appletalk) to coexist within a multipoint network and to be transp
28、orted 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 bearers This abstraction from the MAC layer allows to provision services on top of network protocols independently of the
29、 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 using DVB-GSE As shown in Figure 2, the DVB-GSE link layer hides any MAC layer specifics from the upper layers. It thus
30、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 necessary information to receivers to accomplish this. ETSI ETSI TS 102 606-2 V1.1.1 (2014-07)7On a Point-to-Point Prot
31、ocol (PPP) link according to 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 implementation encapsulates this link as a normal network interface, so that applications can use it as if it were a regular LAN interf
32、ace. 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 establishing and configuring different network-layer protocols is defined in RFC 1661 i.3. When the connection establishment b
33、egins, 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 appropriate NCPs to negotiate the configuration of the network interface (e.g. use of IPv4 or IPv6, IP addresses to use), and thu
34、s 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 adopts the same partitioning of information. One set of information is needed to enable the DVB-GSE layer to configure the underl
35、ying 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 needed to configure the network interfaces which represent the DVB-GSE streams and make them available for the upper layers. This secon
36、d 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 interfaces have been made available to the upper layers (see Figure 3), the properties of the MAC and physical layers are no longe
37、r exposed to upper layers, and applications can act on these interfaces like on any other network interface. Use of the tunnelling mechanism defined in RFC 3077 11 in combination with a return channel allows for the interfaces to be used for reading and writing. ETSI ETSI TS 102 606-2 V1.1.1 (2014-0
38、7)81 Scope The present document specifies a Logical Link Control (LLC) method to be used on DVB streams where the Generic Stream Encapsulation (GSE) TS 102 606-1 1 protocol is used as the link layer. 2 References References are either specific (identified by date of publication and/or edition number
39、 or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location migh
40、t 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 guarantee their long term validity. 2.1 Normative references The following referenced documents are necessary for the application of the present docume
41、nt. 1 ETSI TS 102 606-1: “Digital Video Broadcasting (DVB); Generic Stream Encapsulation (GSE) Protocol; Part 1: Protocol“. 2 ETSI TS 102 606-3: “Digital Video Broadcasting (DVB); Generic Stream Encapsulation (GSE) Protocol; Part 3: Robust Header Compression (ROHC)“. 3 ETSI EN 301 192: “Digital Vide
42、o 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 2: Lower Layers for Satellite standard“. 5 ETSI EN 300 468: “Digital Video Broadcasting (DVB); Specification for
43、 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 RFC 2131: “Dynamic Host Configuration Protocol“. 8 IETF RFC 2132: “DHCP Options and BOOTP Vendor Extensions“. NOT
44、E: 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: “The Robust Header Compression (ROHC) Framework“. 10 IETF RFC 3095: “RObust Header Compression (ROHC): Framewor
45、k 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); Frame structure channel coding and modulation for a second generation digital transmission system for cable sys
46、tems (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: “Digital Video Broadcasting (DVB); Second generation framing structure, chann
47、el coding and modulation systems for Broadcasting, Interactive Services, News Gathering and other broadband satellite applications (DVB-S2)“. ETSI ETSI TS 102 606-2 V1.1.1 (2014-07)915 DVB BlueBook A160: “Digital Video Broadcasting (DVB); Next Generation broadcasting system to Handheld, physical lay
48、er specification (DVB-NGH)“. NOTE 1: Available at https:/www.dvb.org/resources/public/standards/A160_DVB-NGH_Spec.pdf. NOTE 2: This document will be available as ETSI EN 303 105 which is due to become publicly available in 2015 16 IETF RFC 3986: “Uniform Resource Identifier (URI): Generic Syntax“. 1
49、7 IANA: “Unidirectional Lightweight Encapsulation (ULE) Next-Header Registry“. NOTE: See http:/www.iana.org/assignments/ule-next-headers/ule-next-headers.xml. 18 IETF RFC 4776: “Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Option for Civic Addresses Configuration Information“. 19 IETF RFC 4833: “Timezone Options for DHCP“. 20 IETF RFC 3011: “The IPv4 Subnet Selection Option for DHCP“. 21 IETF RFC 3442: “The Classless Static Route Option for Dynamic Host Configuration Protocol (DHCP) version 4“. 22 IETF
