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Versions: 00                                                            
<DMM WG>                                                 Truong-Xuan Do
Internet Draft                                             Younghan Kim
Intended status: Informational               Soongsil University, Korea
Expires: April 2017                                        Oct 30, 2016




          Architecture for delivering multicast mobility services
                        using network slicing
                  draft-xuan-dmm-multicast-mobility-slicing-00



   Abstract

   This document describes the architecture of delivering the mobility
   and multicast over 5G core network using network slicing. The
   mobility and multicast are delivered to customers on demand basis,
   depending on operator's use cases and traffic type of customer.


   Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
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   This Internet-Draft will expire on April 2017.




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   Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors. All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions
   Relating to IETF Documents (http://trustee.ietf.org/license-info)
   in effect on the date of publication of this document.  Please
   review these documents carefully, as they describe your rights
   and restrictions with respect to this document.



   Table of Contents

   1. Introduction...................................................3
   2. Conventions used in this document..............................3
   3. Architecture for delivering multicast and mobility.............4
   4. Security Considerations........................................6
   5. IANA Considerations............................................6
   6. References.....................................................6
      6.1. Normative References......................................6
      6.2. Informative References....................................6





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1. Introduction

   In the 5G era, the mobile network functions and mobile services
   could be provided on demand basis using network function
   virtualizaton (NFV) and network slicing. This document describes the
   architecture of delivering the mobility and multicast services
   over 5G core network using NFV and network slicing. The mobility and
   multicast are delivered to customers depending on their type of
   traffic that they are going to request or mobile operator's specific
   use cases. This architecture makes use of advanced features of
   current distributed mobility management deployment and management
   and orchestration framework (MANO) of network function virtualizaton
   This architecture provides a real view of deployment of mobility
   and mulicast functions in 5G core network.




2. Conventions used in this document

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC-2119 [RFC2119].


    The terms about distributed mobility managements, MANO, NFV are
    defined in [ETSI-NFV-MANO] and [IETF-DMM-deployment-model] and
    [IETF-DMM-multicast-deployment-model]




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3. Architecture for delivering multicast and mobility services using
network slicing

          +---+-----------------------------------+-----+
          |   |  Orchestration services           |     |
          |   |                                   |     |
          |   +-----------------------------------+     |
          |    Mobility Multicast Service Orchestration |
          |                                             |
          +---------------------------------------------+

+--+-------------------+----+  +-+----------------------------------+-+
|  | VNF Manager       |    |  | |    Virtual Network Controler     | |
|  +-------------------+    |  | +----------------------------------+ |
|                           |  | +------------------+ +-------------+ |
| +------------+ +---------+|  | |Mobility Controler| | MB controler| |
| | Mobility   | |MB VNF   ||  | +------------------+ +-------------+ |
| | VNF Manager| |Manager  ||  |        +-----------------------+     |
+-+-------------+----------++  |        |Network Virtualization |     |
                |              +--------+-------+---------------+-----+
                |                               |
                | Rest APIs                     | Openflow/Netconf
                v                               v
              XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
             X                       (CMA)            X
            X             (CMN)              (DMA)   X  Multicast Slice
           X                      (DMN)             X
          X                                        X
         XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

              XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
             X                      (H-CPA)           X
            X             (A-CPN)          (H-DPA)   X  Mobility Slice
           X                      (A-DPN)           X
          X                                        X
         XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

              XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
             X                (H-CPA + CMA)           X
            X       (A-CPN)           (H-DPA + DMA)  X  Mobility +
           X                  (A-DPN)               X    multicast
          X                                        X      slice
         XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

            Fig 1. Multicast and mobility using slicing


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   Fig 1. shows the architecture for delivering multicast and mobility
services over core network using network slicing. In this document, we
assume that mobility and multicast services could be provided using
DMM functions, such as CMA, DMA. Those DMM functions are covered in
[IETF-DMM-deployment-model] and [IETF-DMM-multicast-deployment-model].
In 5G network, the concepts of MANO and slicing are introduced to
increase the network resource efficiency, elasticity, and flexibility.
The mobile network services should be provided on the demand basis and
optimized for a specific use case using network slicing. We observe
that there are several use cases that have different requirements
for mobility and multicast services as below.
   + Only multicast: public safety, video broadcast over sport area
   + Only mobility: user with non-video traffic (web surfing)
   + Multicast and mobility: user with video traffic

   We introduce the architecture to provide network slice on demand and
suitable for each use case. Here, we have three network slices: the
only mulicast slice providing video streaming services for public
safety or sport event use cases; the only mobility slice providing
services for non-video traffic users; and the mobility and mulicast
slice providing services for video traffic users. Here, user traffic
could be classified as video and non-video traffic beforing entering
to the specific slice.

   Main components of our architecture includes: specific VNF managers
(mobility VNF manager, multicast broadcast VNF managers), specific
network controlers (mobility controler, multicast broadcast controlers)
and a combined orchestration service. The specific VNF managers are
used to instantiate, configure, and manage DMM functions. These
DMM functions are described by VNF descriptors. The specific network
controlers are used to configure virtual networks corresponding to
functions supported by each slice. A flowvisor is used to create
different network slices over common network infrastructure. A combined
orchestration service based on operator's requirements to compose
different DMM functions to provide appropriate network services.



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4. Security Considerations
TBD.

5. IANA Considerations

TBD.

6. References

6.1. Normative References


    [ETSI-NFV-MANO]
              ETSI, "Network Function Virtualization (NFV) Management
              and Orchestration V1.1.1", Dec 2014.


6.2. Informative References

    [IETF-DMM-deployment-model]
              S. Gundavelli, S. Jeon, DMM Deployment Models and
              Architectural Considerations,
              draft-ietf-dmm-deployment-models-00.txt, Aug 2016

    [IETF-DMM-multicast-deployment-model]
              Kyoungjae Sun, Truong-Xuan Do, and Younghan Kim,
              Multicast mobility deployment scenarios over distributed
              mobility management,
              draft-kjsun-dmm-deployment-scenarios-multicast-dmm-03.txt
              July 2016

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Authors' Addresses

   Truong-Xuan Do
   Soongsil University
   Changui Bldg. 403,
   (156-743) 511 Sangdo-Dong, Dongjak-Gu, Seoul, Korea

   Phone: +82 10 4473 6869
   Email: thespring1989@gmail.com


   Younghan Kim
   Soongsil University
   11F Hyungnam Engineering Bldg. 1107,
   (156-743) 511 Sangdo-Dong, Dongjak-Gu, Seoul, Korea

   Phone: +82-2-820-0904
   Email: younghak@ssu.ac.kr































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