1、 ETSI TS 103 311-1 V1.1.1 (2017-02) Integrated broadband cable telecommunication networks (CABLE); Fourth Generation Transmission Systems for Interactive Cable Television Services - IP Cable Modems; Part 1: General; DOCSIS3.1 TECHNICAL SPECIFICATION ETSI ETSI TS 103 311-1 V1.1.1 (2017-02)2 Reference
2、 DTS/CABLE-00017-1 Keywords access, broadband, cable, data, IP, IPcable, modem ETSI 650 Route des Lucioles F-06921 Sophia 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
3、(06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present 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 withou
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8、 Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade 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 103 311-1 V1.1.1 (2
9、017-02)3 Contents Intellectual Property Rights 4g3Foreword . 4g3Modal verbs terminology 4g31 Scope 5g32 References 5g32.1 Normative references . 5g32.2 Informative references 5g33 Definitions, symbols and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 6g34 Background 6g34.1 Broadband Acce
10、ss Network . 6g34.2 DOCSISNetwork and System Architecture. 7g34.3 Service Goals 8g34.4 Backward Compatibility . 8g34.5 Reference Architecture . 8g35 Overview of the Multi-part ETSI Standard 9g35.1 Part 1: General; DOCSIS3.1 9g35.2 Part 2: Physical Layer; DOCSIS 3.1 . 9g35.3 Part 3: MAC and Upper Lay
11、er Protocols; DOCSIS3.1 . 9g36 Requirements for Compliance 9g3History 10g3ETSI ETSI TS 103 311-1 V1.1.1 (2017-02)4 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 any,
12、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 on t
13、he 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 may
14、be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Integrated broadband cable telecommunication networks (CABLE). The present document is part 1 of a multi-part deliverable covering the Fourth Generation Tran
15、smission Systems for Interactive Cable Television Services - IP Cable Modems, as identified below: Part 1: “General; DOCSIS3.1“; Part 2: “Physical Layer; DOCSIS3.1“; Part 3: “MAC and Upper Layer Protocols Interface; DOCSIS3.1“. This multi-part deliverable is based on the CableLabs DOCSISset of speci
16、fications which are also standardized in the United States by SCTE. Table 1 indicates for the specifications in this multi-part deliverable the equivalent CableLabs DOCSISspecifications and SCTE Standards. Table 1 ETSI Standards CableLabs DOCSISSpecifications SCTE Standards ETSI TS 103 311-1 None No
17、ne ETSI TS 103 311-2 CM-SP-PHYv3.1-I03-140610 TBD ETSI TS 103 311-3 CM-SP-MULPIv3.1-I03-140610 TBD DOCSISis a registered Trade Mark of Cable Television Laboratories, Inc., and is used in the present document with permission. Modal verbs terminology In the present document “shall“, “shall not“, “shou
18、ld“, “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“ are NOT allowed in ETSI deliverables except when used in direct citation. ET
19、SI ETSI TS 103 311-1 V1.1.1 (2017-02)5 1 Scope The present document is part 1 of a multi-part deliverable that define the fourth generation of high-speed data-over-cable systems, commonly referred to as the DOCSIS3.1 specifications. This specification was developed for the benefit of the cable indus
20、try, and includes contributions by operators and vendors from North and South America, Europe, and Asia. This generation of the DOCSISspecifications builds upon the previous generations of DOCSISspecifications (commonly referred to as the DOCSIS3.0 and earlier specifications), leveraging the existin
21、g Media Access Control (MAC) and Physical (PHY) layers, but with the addition of a new PHY layer designed to improve spectral efficiency and provide better scaling for larger bandwidths (and appropriate updates to the MAC and management layers to support the new PHY layer). It includes backward comp
22、atibility for the existing PHY layers in order to enable a seamless migration to the new technology. 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 cit
23、ed version applies. For non-specific references, the latest version of the reference 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 i
24、ncluded in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are necessary for the application of the present document. 1 ETSI TS 103 311-2: “Integrated broadband cable telecommunication networks (CABLE); Fourth Gene
25、ration Transmission Systems for Interactive Cable Television Services - IP Cable Modems Part 2: Physical Layer; DOCSIS3.1“. 2 ETSI TS 103 311-3: “Integrated broadband cable telecommunication networks (CABLE); Fourth Generation Transmission Systems for Interactive Cable Television Services - IP Cable
26、 Modems Part 3: MAC and Upper Layer Protocols Interface; DOCSIS3.1“. 3 Cable Television Laboratories, Inc. CM-SP-SECv3.1: “DOCSIS3.1, Security Specification“. 4 Cable Television Laboratories, Inc. CM-SP-CM-OSSIv3.1: “DOCSIS3.1, Cable Modem Operations Support System Interface Specification“. 5 Cable
27、Television Laboratories, Inc. CM-SP-CCAP-OSSIv3.1: “DOCSIS3.1, CCAP Operations Support System Interface Specification“. 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only
28、 the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced
29、 documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. Not applicable. ETSI ETSI TS 103 311-1 V1.1.1 (2017-02)6 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the
30、following terms and definitions apply: cable modem: Layer 2 termination device that terminates the network end of a DOCSISlink headend: central location on the cable network that is responsible for injecting broadcast video and other signals in the downstream direction 3.2 Abbreviations For the purp
31、oses of the present document, the following abbreviations apply: CCAP Converged Cable Access Platform CM Cable Modem CMTS Cable Modem Termination System CPE Customer Premise Equipment DHCP Dynamic Host Configuration Protocol EQAM Edge quadrature amplitude modulation HFC Hybrid Fibre Coax IP Internet
32、 Protocol IPDR Internet Protocol Detail Record IPv4 Internet Protocol version 4 IPv6 Internet Protocol version 6 LAN Local Area Network MAC Media Access Control PHY Physical Layer SCTE Society of Cable Telecommunications Engineers SNMP Simple Network Management Protocol TBD To Be Defined 4 Backgroun
33、d 4.1 Broadband Access Network A coaxial-based broadband access network is assumed. This may take the form of either an all-coax or hybrid-fibre/coax network. The generic term “cable network“ is used in the present document to cover all cases. A cable network uses a tree-and-branch architecture with
34、 analogue transmission. The key functional characteristics assumed in the present document are the following: Two-way transmission; A maximum optical/electrical spacing between the CMTS and the most distant CM of 160 km in each direction, although typical maximum separation may be 15 - 25 km; and A
35、maximum differential optical/electrical spacing between the CMTS and the closest and most distant modems of 160 km in each direction, although this would typically be limited to 25 km. At a propagation velocity in fibre of approximately 5 ns/m, 160 km of fibre in each direction results in a round-tr
36、ip delay of approximately 1,6 ms. ETSI ETSI TS 103 311-1 V1.1.1 (2017-02)7 4.2 DOCSISNetwork and System Architecture The elements that participate in the provisioning of DOCSISservices are shown in figure 1. Figure 1: The DOCSISNetwork The CM connects to the operators cable network and to a home net
37、work, bridging packets between them. Many CPE devices can connect to the CMs LAN interfaces. CPE devices can be embedded with the CM in a single device, or they can be separate, standalone devices (as shown in figure 1). CPE devices may use IPv4, IPv6, or both forms of IP addressing. Examples of typ
38、ical CPE devices are home routers, set-top devices, personal computers, etc. The CMTS connects the operators back office and core network with the cable network. Its main function is to forward packets between these two domains, and between upstream and downstream channels on the cable network. Vari
39、ous applications are used in the back office to provide configuration and other support to the devices on the DOCSISnetwork. These applications use IPv4 and/or IPv6, as appropriate to the particular operators deployment. Applications include: Provisioning Systems The DHCP servers provide the CM with
40、 initial configuration information, including IP address(es), when the CM boots. The Config File server is used to download configuration files to CMs when they boot. Configuration files are in binary format and permit the configuration of the CMs parameters. The Software Download server is used to
41、download software upgrades to the CM. The Time Protocol server provides Time Protocol clients, typically CMs, with the current time of day. Certificate Revocation server provides certificate status. Network Management The SNMP Manager allows the cable operator to configure and monitor SNMP Agents, t
42、ypically the CM and the CMTS. The Syslog server collects messages pertaining to the operation of devices. The IPDR Collector server allows the operator to collect bulk statistics in an efficient manner. ETSI ETSI TS 103 311-1 V1.1.1 (2017-02)8 4.3 Service Goals As cable operators have widely deploye
43、d high-speed data services on cable television systems, the demand for bandwidth has increased. To this end, it was decided to add new features to the DOCSISspecification for the purpose of increasing system and channel capacity, enhancing network security, and deploying new service offerings. The D
44、OCSISsystem allows transparent bidirectional transfer of Internet Protocol (IP) traffic, between the cable system headend and customer locations, over an all-coaxial or hybrid-fibre/coax (HFC) cable network. The flow of traffic is shown in simplified form in figure 2. Figure 2: Transparent IP Traffi
45、c Through the Data-Over-Cable System 4.4 Backward Compatibility The present document defines the DOCSIS3.1 interface. Prior generations of DOCSISwere commonly referred to as the DOCSIS1.0, 1.1, 2.0, and 3.0 interfaces. DOCSIS3.1 provides backward-compatibility with equipment built to certain previou
46、s versions. DOCSIS3.1-compliant CMs interoperate seamlessly with DOCSIS3.1 and DOCSIS3.0 CMTSs. DOCSIS3.1-compliant CMTSs seamlessly support DOCSIS3.0, DOCSIS2.0, and DOCSIS1.1 CMs. 4.5 Reference Architecture The reference architecture for data-over-cable services and interfaces is shown in figure 3
47、. Figure 3: Data-over-Cable Reference Architecture ETSI ETSI TS 103 311-1 V1.1.1 (2017-02)9 The lighter shaded areas are related functionality, but are out of the scope of DOCSISspecifications. Boxes represent functional components and arrows represent interfaces. Interfaces are identified using das
48、hed lines. 5 Overview of the Multi-part ETSI Standard 5.1 Part 1: General; DOCSIS3.1 The present document. 5.2 Part 2: Physical Layer; DOCSIS 3.1 There are differences in the cable spectrum planning practices adopted for different regions of the world. For the new PHY layer defined in this specifica
49、tion, there is flexibility to deploy the technology in any spectrum plan; therefore, no special accommodation for different regions of the world is required for this new PHY layer. However, due to the inclusion of the DOCSIS3.0 PHY layers for backward compatibility purposes, there is still a need for different region-specific physical layer technologies. Therefore, three options for physical layer technologies are included in this specification, which have equal priority and are not required to be
