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Scte 216 2020 Energy Management Subcommittee SCTE STANDARD SCTE 216 2020 Adaptive Power System Interface Specification (APSIS™) SCTE 216 2020 NOTICE The Society of Cable Telecommunications Engineers (SCTE) / International Society of Broadband Experts (ISBE) Standards and Operational Practices (hereafter called “documents”) are intended to serve the public interest by providing specifications, test methods and procedures that promote uniformity of product, interchangeability, best practices and ultimately the long-term reliability of broadband communications facilities. These documents shall not in any way preclude any member or non-member of SCTE•ISBE from manufacturing or selling products not conforming to such documents, nor shall the existence of such standards preclude their voluntary use by those other than SCTE•ISBE members. SCTE•ISBE assumes no obligations or liability whatsoever to any party who may adopt the documents. Such adopting party assumes all risks associated with adoption of these documents, and accepts full responsibility for any damage and/or claims arising from the adoption of such documents. Attention is called to the possibility that implementation of this document may require the use of subject matter covered by patent rights. By publication of this document, no position is taken with respect to the existence or validity of any patent rights in connection therewith. SCTE•ISBE shall not be responsible for identifying patents for which a license may be required or for conducting inquiries into the legal validity or scope of those patents that are brought to its attention. Patent holders who believe that they hold patents which are essential to the implementation of this document have been requested to provide information about those patents and any related licensing terms and conditions. Any such declarations made before or after publication of this document are available on the SCTE•ISBE web site at http://www.scte.org. All Rights Reserved 2020 © Society of Cable Telecommunications Engineers, Inc. 140 Philips Road Exton, PA 19341 SCTE STANDARD © SCTE•ISBE 2 SCTE 216 2020 Table of Contents Title Page Number NOTICE ......................................................................................................................................................... 2 Table of Contents .......................................................................................................................................... 3 1. Introduction .......................................................................................................................................... 5 1.1. Executive Summary ............................................................................................................... 5 1.2. Scope ..................................................................................................................................... 6 1.3. Benefits .................................................................................................................................. 7 1.4. Intended Audience ................................................................................................................. 7 1.5. Areas for Further Investigation or to be Added in Future Versions ........................................ 7 2. Normative References ........................................................................................................................ 7 2.1. SCTE References .................................................................................................................. 7 2.2. Standards from Other Organizations ..................................................................................... 7 2.3. Published Materials ................................................................................................................ 8 3. Informative References ....................................................................................................................... 8 3.1. SCTE References .................................................................................................................. 8 3.2. Standards from Other Organizations ..................................................................................... 8 3.3. Published Materials ................................................................................................................ 8 4. Compliance Notation ........................................................................................................................... 9 5. Abbreviations and Definitions .............................................................................................................. 9 5.1. Abbreviations.......................................................................................................................... 9 5.2. Definitions ............................................................................................................................. 15 6. Energy Management Network Topology (Informative) ..................................................................... 16 6.1. Back-office Network ............................................................................................................. 16 6.2. Backbone Network ............................................................................................................... 17 6.2.1. National Distribution & Data Centers ................................................................... 17 6.3. Transport Network ................................................................................................................ 18 6.4. Access Network ................................................................................................................... 20 6.5. Customer Network ............................................................................................................... 22 7. Wireless Network Overview .............................................................................................................. 22 7.1. Reference Power Levels for Wireless Network and System Architecture ........................... 24 7.1.1. Power Specifications ............................................................................................ 24 8. Communications Protocol & Control ................................................................................................. 26 8.1. Communications Reference Architecture ............................................................................ 26 8.1.1. Information Model ................................................................................................ 27 8.1.2. APSIS Protocols................................................................................................... 27 9. Conclusion ......................................................................................................................................... 28 List of Figures Title Page Number Figure 1 - Network Architecture .................................................................................................................... 5 Figure 2 - Transport Network Headend and Hubs ...................................................................................... 19 Figure 3 - Wireless Network Architecture ................................................................................................... 22 Figure 4 - APSIS Communications Reference Architecture ....................................................................... 27 List of Tables Title Page Number Table 1 - Power specification of typical access points ................................................................................ 24 SCTE STANDARD © SCTE•ISBE 3 SCTE 216 2020 Table 2 - Power specifications of typical access point controllers .............................................................. 24 Table 3 - Power specification of a switch .................................................................................................... 24 Table 4 - Power specification of a policy server/intelligent serving gateway (ISG) .................................... 25 Table 5 - ETE network elements in Wi-Fi architecture ............................................................................... 25 Table 6 - Power saved by using APSIS ...................................................................................................... 26 SCTE STANDARD © SCTE•ISBE 4 SCTE 216 2020 1. Introduction 1.1. Executive Summary The Adaptive Systems Interface Specification (APSIS™) is a method by which cable broadband providers can address and control energy management from an end to end perspective. The 2020 release contains updated references, reorganizes some content, and recognizes YANG data modeling as another device level protocol opportunity. The general idea behind APSIS is that power consumption should be reflective of demand. Figure 1identifies the components of the network and systems architecture being addressed by APSIS. Figure 1 - Network Architecture The cable network architecture described here provides context to segment devices into logical categories for the purpose of understanding software interfaces and interaction between components. The cable network is generally implemented in a hub-spoke topology, where network segments become more regionalized and numerous as we travel from left to right in the diagram. Network segments include: The Back Office Network includes Business Support Systems (BSS) used to run operations including billing, customer
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