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Use Cases and Requirements for SCONE in Massive Data Transmission
draft-ruan-scone-use-cases-and-requirements-00

Document Type Active Internet-Draft (individual)
Authors Zheng Ruan , Mengyao Han , Liu Ying , Gao xing , Xuesong Geng , Hang Shi
Last updated 2024-10-21
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draft-ruan-scone-use-cases-and-requirements-00
SCONE                                                       Z. Ruan, Ed.
Internet-Draft                                               M. Han, Ed.
Intended status: Standards Track                                  Y. Liu
Expires: 24 April 2025                                            X. Gao
                                                            China Unicom
                                                                 X. Geng
                                                                  H. Shi
                                                                  Huawei
                                                         21 October 2024

   Use Cases and Requirements for SCONE in Massive Data Transmission
             draft-ruan-scone-use-cases-and-requirements-00

Abstract

   This document outlines a use case for Standard Communication with
   Network Elements (SCONE) in the context of massive data transmission
   (MDT).  From the described use case, it derives a set of signaling
   requirements for the communication between applications and network
   elements.

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).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on 24 April 2025.

Copyright Notice

   Copyright (c) 2024 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 (https://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

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   and restrictions with respect to this document.  Code Components
   extracted from this document must include Revised BSD License text as
   described in Section 4.e of the Trust Legal Provisions and are
   provided without warranty as described in the Revised BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Use-case: Massive Data Transmission . . . . . . . . . . . . .   2
   3.  Requirements of Signaling . . . . . . . . . . . . . . . . . .   3
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   3
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
   6.  Informative References  . . . . . . . . . . . . . . . . . . .   4
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   4

1.  Introduction

   In scenarios involving massive data transmission, network elements
   must communicate with applications to exchange crucial information,
   such as network path throughput and availability.  By leveraging this
   information, applications can schedule data transmissions during
   optimal time periods—such as when network congestion is low or user
   activity is reduced—thereby enhancing data transfer efficiency and
   minimizing the impact on network performance.  With knowledge of
   network availability, applications can also offer more accurate
   estimates for upload or download times, improving user experience by
   enabling better planning.  This document focuses on the requirements
   for collaboration between applications and network elements in such
   scenarios.

2.  Use-case: Massive Data Transmission

   Emerging industries like artificial intelligence (AI), intelligent
   computing, and supercomputing generate vast amounts of data daily,
   which must be quickly transmitted over the operator's network.  The
   scenario described in [I-D.liu-rtgwg-mdt-in-high-bdp] provides an in-
   depth analysis of massive data transmission needs.  Given the volume
   of data involved, the demand for network bandwidth is substantial.
   For example, an AI training model may require the transmission of 10
   TB of data to a computing center within a few hours, with
   transmission speeds ranging from 10 Gbps to 30 Gbps.  Operator
   networks, which typically offer link bandwidth between 50 Gbps and
   100 Gbps, see a single MDT task consuming up to 10%–30% of the link's
   capacity.  When multiple tasks are transmitted concurrently, the
   instantaneous load on the network can be significant.  However,
   several strategies for collaboration between applications and
   networks, such as those discussed in
   [I-D.kwbdgrr-tsvwg-net-collab-rqmts]

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   [I-D.zhang-rtgwg-collaboration-app-net], offer potential solutions to
   this challenge.

   In MDT scenarios, two primary components must work together: the
   application side and the network side.  Their roles are as follows:

   Application side: The MDT tasks may originate from either operators
   or third-party file transfer systems.  The application side provides
   the network side with data transmission requirements, including the
   data volume, source and destination addresses, and expected
   completion times.  Based on the network's feedback, the application
   formulates an appropriate data transfer strategy.  Network side:
   Network devices, which may be closest to the application or
   specialized gateway devices, monitor the network's real-time status.
   They perform path calculations, reserve necessary resources, and
   communicate the results back to the application side, helping guide
   the data transmission strategy.

   One of the key characteristics of operator networks is the "tidal
   effect," where network load is high during peak hours and low during
   off-peak times.  To avoid overloading the network when multiple MDT
   tasks are transmitted simultaneously, operators aim to schedule these
   tasks during off-peak hours when higher bandwidth can be made
   available.  Additionally, they may distribute different MDT tasks
   across various time slots and network paths to ensure more efficient
   network utilization.

3.  Requirements of Signaling

   The exchange of information between the application and network sides
   requires new signaling mechanisms.  While this document does not
   specify the exact signaling format, it outlines the essential
   information that needs to be conveyed:

   a) Available time slots: Information about when the network can
   accommodate MDT tasks, guiding the application's scheduling. b)Path
   information: Details about available network paths, including
   throughput recommendations, latency, packet loss rate, maximum
   transmission unit (MTU), and other relevant metrics. c) Path
   identifier: A mechanism to assign a unique identifier to each
   transmission path, allowing the application to direct traffic
   appropriately.  The network device uses this identifier to steer
   traffic to the designated path.

4.  Security Considerations

   TBD

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5.  IANA Considerations

   TBD

6.  Informative References

   [I-D.liu-rtgwg-mdt-in-high-bdp]
              Ying, "Use Cases and Requirements of Massive Data
              Transmission(MDT) in High Bandwidth-delay Product (BDP)
              Network", Work in Progress, Internet-Draft, draft-liu-
              rtgwg-mdt-in-high-bdp-01, 5 July 2024,
              <https://datatracker.ietf.org/doc/html/draft-liu-rtgwg-
              mdt-in-high-bdp-01>.

   [I-D.kwbdgrr-tsvwg-net-collab-rqmts]
              Kaippallimalil, J., Wing, D., Gundavelli, S., Rajagopalan,
              S., Dawkins, S., and M. Boucadair, "Requirements for Host-
              to-Network Collaboration Signaling", Work in Progress,
              Internet-Draft, draft-kwbdgrr-tsvwg-net-collab-rqmts-04,
              14 October 2024, <https://datatracker.ietf.org/doc/html/
              draft-kwbdgrr-tsvwg-net-collab-rqmts-04>.

   [I-D.zhang-rtgwg-collaboration-app-net]
              Zhang, N., Zhang, S., Yi, X., Geng, X., and H. Shi, "Deep
              Collaboration between Application and Network", Work in
              Progress, Internet-Draft, draft-zhang-rtgwg-collaboration-
              app-net-01, 17 October 2024,
              <https://datatracker.ietf.org/doc/html/draft-zhang-rtgwg-
              collaboration-app-net-01>.

Authors' Addresses

   Zheng Ruan (editor)
   China Unicom
   Beijing
   China
   Email: ruanz6@chinaunicom.cn

   Mengyao Han (editor)
   China Unicom
   Beijing
   China
   Email: hanmy12@chinaunicom.cn

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   Ying Liu
   China Unicom
   Beijing
   China
   Email: liuy619@chinaunicom.cn

   Xing Gao
   China Unicom
   Beijing
   China
   Email: gaox60@chinaunicom.cn

   Xuesong Geng
   Huawei
   Beijing
   China
   Email: gengxuesong@huawei.com

   Hang Shi
   Huawei
   Beijing
   China
   Email: shihang9@huawei.com

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