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    Intellectual Property Rights
    Foreword
    Modal verbs terminology
    1 Scope
    2 References
    2.1 Normative references
    2.2 Informative references
    3 Definition of terms, symbols and abbreviations
    3.1 Terms
    3.2 Symbols
    3.3 Abbreviations
    4 Overview
    5 Multi-access Edge Computing framework
    6 Reference architecture
    6.1 Generic reference architecture
    6.2 Reference architecture variant for MEC in NFV
    6.2.1 Description
    6.2.2 Architecture diagram
    7 Functional elements and reference points
    7.1 Functional elements
    7.1.1 MEC host
    7.1.2 MEC platform
    7.1.3 MEC application
    7.1.4 MEC system level management
    7.1.4.1 Multi-access edge orchestrator
    7.1.4.2 Operations Support System (OSS)
    7.1.4.3 User application lifecycle management proxy
    7.1.5 MEC host level management
    7.1.5.1 MEC platform manager
    7.1.5.2 Virtualization infrastructure manager
    7.1.6 Device application
    7.1.7 Customer facing service portal
    7.1.8 Specific functional elements in the MEC in NFV architecture variant
    7.1.8.1 Overview
    7.1.8.2 MEC application orchestrator
    7.1.8.3 MEC platform manager ΠNFV
    7.1.8.4 NFVO
    7.1.8.5 VNFM (MEC Platform LCM)
    7.1.8.6 VNFM (MEC App LCM)
    7.2 Reference points
    7.2.1 Reference points related to the MEC platform
    7.2.2 Reference points related to the MEC management
    7.2.3 Reference points related to external entities
    7.2.4 Reference points related to the MEC in NFV architecture variant
    8 MEC services
    8.1 General
    8.2 Radio Network Information
    8.3 Location
    8.4 Bandwidth Manager
    Annex A (informative): Key concepts
    A.1 MEC host selection
    A.2 DNS support
    A.3 Application traffic filtering and routing
    A.4 Support of application and UE mobility
    A.4.1 Background: UE mobility
    A.4.2 MEC application scenarios for UE mobility
    A.4.2.1 MEC applications not sensitive to UE mobility
    A.4.2.2 MEC applications sensitive to UE mobility
    A.4.2.2.1 Maintaining connectivity between UE and MEC application instance
    A.4.2.2.2 Application state relocation
    A.4.2.2.3 Application instance relocation within the MEC system
    A.4.2.2.4 Application instance relocation between the MEC system and an external cloud environment
    A.5 Void
    A.6 Data Plane
    A.7 Inter-MEC system communication
    History
    ETSI GS MEC 003 V2.1.1 (2019-01) GROUP SPECIFICATION Multi-access Edge Computing (MEC); Framework and Reference Architecture Disclaimer The present document has been produced and approved by the Multi-access Edge Computing (MEC) ETSI Industry Specification Group (ISG) and represents the views of those members who participated in this ISG. It does not necessarily represent the views of the entire ETSI membership.
    2 ETSI GS MEC 003 V2.1.1 (2019-01) Reference RGS/MEC-0003v211Arch Keywords architecture, MEC 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 à but non lucratif enregistrée à la Sous-Préfecture de Grasse (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 without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI deliverable is the one made publicly available in PDF format at www.etsi.org/deliver. 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 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 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 foregoing restriction extend to reproduction in all media. DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTETM are trademarks of ETSI registered for the benefit of its Members and oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM® and the GSM logo are trademarks registered and owned by the GSM Association. of the oneM2M Partners. © ETSI 2019. All rights reserved. ETSI
    Contents 3 ETSI GS MEC 003 V2.1.1 (2019-01) Intellectual Property Rights ................................................................................................................................ 5 Foreword ............................................................................................................................................................. 5 Modal verbs terminology .................................................................................................................................... 5 1 2 2.1 2.2 3 3.1 3.2 3.3 4 5 Scope ........................................................................................................................................................ 6 References ................................................................................................................................................ 6 Normative references ......................................................................................................................................... 6 Informative references ........................................................................................................................................ 6 Definition of terms, symbols and abbreviations ....................................................................................... 7 Terms .................................................................................................................................................................. 7 Symbols .............................................................................................................................................................. 7 Abbreviations ..................................................................................................................................................... 7 Overview .................................................................................................................................................. 7 Multi-access Edge Computing framework ............................................................................................... 8 6 6.1 6.2 6.2.1 6.2.2 Reference architecture .............................................................................................................................. 9 Generic reference architecture ............................................................................................................................ 9 Reference architecture variant for MEC in NFV .............................................................................................. 10 Description .................................................................................................................................................. 10 Architecture diagram .................................................................................................................................. 10 7 7.1 7.1.1 7.1.2 7.1.3 7.1.4 7.1.4.1 7.1.4.2 7.1.4.3 7.1.5 7.1.5.1 7.1.5.2 7.1.6 7.1.7 7.1.8 7.1.8.1 7.1.8.2 7.1.8.3 7.1.8.4 7.1.8.5 7.1.8.6 7.2 7.2.1 7.2.2 7.2.3 7.2.4 Functional elements and reference points .............................................................................................. 11 Functional elements .......................................................................................................................................... 11 MEC host .................................................................................................................................................... 11 MEC platform ............................................................................................................................................. 11 MEC application ......................................................................................................................................... 12 MEC system level management.................................................................................................................. 12 Multi-access edge orchestrator .............................................................................................................. 12 Operations Support System (OSS) ........................................................................................................ 12 User application lifecycle management proxy ...................................................................................... 12 MEC host level management ...................................................................................................................... 13 MEC platform manager ......................................................................................................................... 13 Virtualization infrastructure manager ................................................................................................... 13 Device application ...................................................................................................................................... 13 Customer facing service portal ................................................................................................................... 13 Specific functional elements in the MEC in NFV architecture variant ....................................................... 14 Overview ............................................................................................................................................... 14 MEC application orchestrator ............................................................................................................... 14 MEC platform manager – NFV ............................................................................................................. 14 NFVO .................................................................................................................................................... 14 VNFM (MEC Platform LCM) .............................................................................................................. 14 VNFM (MEC App LCM) ..................................................................................................................... 14 Reference points ............................................................................................................................................... 14 Reference points related to the MEC platform ........................................................................................... 14 Reference points related to the MEC management ..................................................................................... 15 Reference points related to external entities ............................................................................................... 15 Reference points related to the MEC in NFV architecture variant ............................................................. 15 8 8.1 8.2 8.3 8.4 MEC services ......................................................................................................................................... 16 General ............................................................................................................................................................. 16 Radio Network Information ............................................................................................................................. 16 Location ............................................................................................................................................................ 17 Bandwidth Manager ......................................................................................................................................... 17 Annex A (informative): Key concepts ................................................................................................... 18 ETSI
    4 ETSI GS MEC 003 V2.1.1 (2019-01) A.1 MEC host selection ................................................................................................................................ 18 A.2 DNS support ........................................................................................................................................... 18 A.3 Application traffic filtering and routing ................................................................................................. 19 A.4 Support of application and UE mobility ................................................................................................. 19 Background: UE mobility ................................................................................................................................ 19 A.4.1 MEC application scenarios for UE mobility .................................................................................................... 19 A.4.2 MEC applications not sensitive to UE mobility .......................................................................................... 19 A.4.2.1 A.4.2.2 MEC applications sensitive to UE mobility ................................................................................................ 19 Maintaining connectivity between UE and MEC application instance ................................................. 19 A.4.2.2.1 Application state relocation ................................................................................................................... 19 A.4.2.2.2 Application instance relocation within the MEC system ...................................................................... 20 A.4.2.2.3 A.4.2.2.4 Application instance relocation between the MEC system and an external cloud environment ........... 20 A.5 Void ........................................................................................................................................................ 20 A.6 Data Plane .............................................................................................................................................. 20 A.7 Inter-MEC system communication ........................................................................................................ 20 History .............................................................................................................................................................. 21 ETSI
    5 ETSI GS MEC 003 V2.1.1 (2019-01) Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables 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 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 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 may be, or may become, essential to the present document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Group Specification (GS) has been produced by ETSI Industry Specification Group (ISG) Multi-access Edge Computing (MEC). Modal 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" are NOT allowed in ETSI deliverables except when used in direct citation. ETSI
    6 ETSI GS MEC 003 V2.1.1 (2019-01) Scope 1 The present document provides a framework and reference architecture for Multi-access Edge Computing that describes a MEC system that enables MEC applications to run efficiently and seamlessly in a multi-access network. The present document also describes the functional elements and the reference points between them, and a number of MEC services that comprise the solution. It finally presents a number of key concepts related to the multi-access edge architecture. 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 referenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at https://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. The following referenced documents are necessary for the application of the present document. [1] [2] [3] [4] ETSI GS MEC 002: "Multi-access Edge Computing (MEC); Use Cases and Requirements". ETSI GS NFV 002: "Network Functions Virtualisation (NFV); Architectural Framework". ETSI GS NFV-IFA 013: "Network Functions Virtualisation (NFV); Management and Orchestration; Os-Ma-Nfvo reference point - Interface and Information Model Specification". ETSI GS NFV-IFA 008: "Network Functions Virtualisation (NFV); Management and Orchestration; Ve-Vnfm reference point - Interface and Information Model 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 the cited version applies. For non-specific references, the latest version of the referenced 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 documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. [i.1] [i.2] [i.3] ETSI GS MEC 001: "Multi-access Edge Computing (MEC); Terminology". Void. "OpenStack++ for Cloudlet Deployment". NOTE: Available at http://reports-archive.adm.cs.cmu.edu/anon/2015/CMU-CS-15-123.pdf. [i.4] [i.5] [i.6] Void. ETSI GR MEC 017: "Mobile Edge Computing (MEC); Deployment of Mobile Edge Computing in an NFV environment". ETSI TS 123 501: "System Architecture for the 5G System, Stage 2 (Release 15)". ETSI
    3 7 ETSI GS MEC 003 V2.1.1 (2019-01) Definition of terms, symbols and abbreviations 3.1 Terms For the purposes of the present document, the terms given in ETSI GS MEC 001 [i.1] apply. 3.2 Void. 3.3 Symbols Abbreviations For the purposes of the present document, the abbreviations given in ETSI GS MEC 001 [i.1] and the following apply: CFS LCM MEAO MEPM-V NFV NFVO NFVI NS OSS VIM VNF VNFM Customer Facing Service LifeCycle Management MEC Application Orchestrator MEC Platform Manager - NFV Network Functions Virtualization NFV Orchestrator Network Functions Virtualization Infrastructure Network Service Operations Support System Virtualization Infrastructure Manager Virtualized Network Function VNF Manager Overview 4 The present document presents a framework and a reference architecture to support the requirements defined for Multi-access Edge Computing in ETSI GS MEC 002 [1]. The framework described in clause 5 shows the structure of the Multi-access Edge Computing environment. The reference architecture described in clause 6 shows the functional elements that compose the multi-access edge system, including the MEC platform and the MEC management, as well as the reference points between them. The functional elements and reference points listed in clause 7 describe the high-level functionality of the different functional elements and reference points. Clause 8 describes the high-level functionality of a number of MEC services, comprising the solution for Multi-access Edge Computing. Annex A describes at a high-level a number of key concepts that underlie the principles used to develop the framework and reference architecture described in the present document. ETSI
    8 ETSI GS MEC 003 V2.1.1 (2019-01) Multi-access Edge Computing framework 5 Multi-access Edge Computing enables the implementation of MEC applications as software-only entities that run on top of a virtualization infrastructure, which is located in or close to the network edge. The Multi-access Edge Computing framework shows the general entities involved. These can be grouped into system level, host level and network level entities. Figure 5-1: Multi-access Edge Computing framework Figure 5-1 illustrates the framework for Multi-access Edge Computing consisting of the following entities: • MEC host, including the following: - MEC platform; - MEC applications; - virtualization infrastructure; • MEC system level management; • MEC host level management; • external related entities, i.e. network level entities. ETSI
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