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SCONEPRO Net Neutrality

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Author bryantwc
Last updated 2024-05-17
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SCONEPRO                                                          B. Tan
Internet-Draft                                                      Meta
Intended status: Informational                               15 May 2024
Expires: 16 November 2024

                        SCONEPRO Net Neutrality


   This document provides a response to the question of whether SCONEPRO
   can be used to undermine Net Neutrality provisions for network users.
   It proposes guardrails to ensure Net Neutrality principles are

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

   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 16 November 2024.

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 (
   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.  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.

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Table of Contents

   1.  SCONEPRO Background and Introduction  . . . . . . . . . . . .   2
     1.1.  Net Neutrality Question . . . . . . . . . . . . . . . . .   3
   2.  Conventions and Definitions . . . . . . . . . . . . . . . . .   3
   3.  Current Draft Response  . . . . . . . . . . . . . . . . . . .   3
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .   4
     6.2.  Informative References  . . . . . . . . . . . . . . . . .   5
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .   6
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   6

1.  SCONEPRO Background and Introduction

   Video traffic is already 70% of all traffic on the Internet and is
   expected to grow to 80% by 2028.  New formats like short form videos
   have seen tremendous growth in recent years.  Both in developed and
   emerging markets video traffic forms 50-80% of traffic on mobile
   networks.  These growth trends are likely to increase with new
   populations coming online on mobile-first markets and the observation
   that unlike text content, video content consumption is not being
   limited by literacy barriers.  On the other hand, the electromagnetic
   spectrum is a limited resource.  In order to ensure that mobile
   networks continue functioning in a healthy state despite this
   incredible growth, communication service providers (CSPs) will be
   required to make infrastructure investments such as more licensed
   spectrum, cell densification, massive MIMO etc.  In order to flatten
   the rate of growth, CSPs in several markets attempt to identify and
   throttle video traffic based on user data plans.  There are several
   problems with this kind of throttling:

   1.  CSPs can not explicitly measure the effect that throttling has on
       the end user’s quality of experience (QoE) making this an open
       loop approach.

   2.  Traffic detection and throttling for every flow is compute
       intensive for CSPs.  With distributed UPF (user plane function)
       in 5G mobile networks more nodes in CSP network may need to
       support traffic detection and throttling.  Traffic detection can
       have inaccuracies and these inaccuracies are expected to increase
       as the content delivery industry moves towards end-2-end
       encryption like TLS 1.3 and encrypted client hello (ECH).

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   3.  The unpredictable and non-transparent behavior of traffic
       throttlers used by CSPs confuse the bandwidth estimation and
       congestion control protocols being used within end-2-end video
       delivery sessions between content server and client.  This
       results in poor quality of experience (QoE) for the end user.

   4.  Content and Application Providers (CAPs) are designing algorithms
       to detect the presence of such traffic throttlers to counter
       their detrimental effects.  These algorithms have their own
       inaccuracies in detection and add compute resources on the CAP

   An alternative approach is for CAPs to self-adapt the traffic
   corresponding to video flows.  Since CAPs control the client and
   server endpoints and can measure end user QoE, they are in a better
   position to do this self-adaptation in a close loop manner.  This
   alternative approach has already been proven to improve user QoE in
   production deployments [YouTube].

   For this alternative approach to work a standardized secure on-path
   network interface is required which will enable CSP controlled
   network elements to signal the desired traffic profile
   characteristics to the CAP client/server endpoints.  The Secure
   Communication of Network Properties (SCONEPRO) protocol (previously
   known as SADCDN) is being proposed in the IETF as a working group
   [SADCDN-Charter] motivated by this alternate approach.

1.1.  Net Neutrality Question

   During the IETF 119 SCONEPRO BOF, a question was raised about the
   potential impact of SCONE PRO on Net Neutrality.  This document
   provides a response to that question and proposes guardrails to
   ensure Net Neutrality is protected.

2.  Conventions and Definitions

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "OPTIONAL" in this document are to be interpreted as described in
   BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

3.  Current Draft Response

   The goal of a SCONEPRO technical standard is to support greater
   network efficiency and video quality on a non-discriminatory basis
   consistent with net neutrality principles [ISOC-2010] [ISOC-2015]

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   Through stakeholder collaboration and alignment in the IETF forum,
   the proposed solution is intended to be designed and implemented in a
   way that is:

   *  Non-discriminatory: An open technical standard that any
      application or website on QUIC on the internet can choose to
      implement to signal and communicate a video rate with the network.
      This should enable any application or website (if it chooses to)
      to adapt to network conditions for video traffic and achieve
      greater efficiency and video quality.

   *  No “fast lanes” or prioritization: A technical solution that does
      not result in the delivery of some content being prioritized over
      other content on the Internet.

   *  No CAP payment for participation: No payment to telcos by content
      providers in order to implement and participate in the open
      technical standard.

   *  Greater network efficiency and video quality for the Internet: A
      technical standard that enables greater network efficiency and
      video quality to the benefit of all traffic on the network.

   CSPs have the responsibility to apply any network management
   practices to traffic in a non-discriminatory way consistent with net
   neutrality principles and regulations.  The proposed open technical
   standard enables the network to signal network conditions to
   applications and websites (that choose to use the technical standard)
   so that those applications and websites can adapt to the network
   conditions to support better video quality and greater network

4.  Security Considerations

   General SCONEPRO security considerations are discussed in the other
   documents covering the requirements
   [I-D.joras-sadcdn-video-optimization-requirements] and specific
   network-to-host signaling methods.  This document provides only
   addresses questions regarding net neutrality and SCONEPRO.

5.  IANA Considerations

   This document has no IANA actions.

6.  References

6.1.  Normative References

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   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,

   [RFC8174]  Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
              2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
              May 2017, <>.

6.2.  Informative References

              Communications, B. of E. R. for E., "BEREC Guidelines on
              the Implementation of the Open Internet Regulation", 9
              June 2022,

              Joras, M., Tomar, A., Tiwari, A., and A. Frindell, "SADCDN
              Video Optimization Requirements", Work in Progress,
              Internet-Draft, draft-joras-sadcdn-video-optimization-
              requirements-00, 5 January 2024,

              Society, I., "Open Inter-networking", 21 February 2010,

              Society, I., "Policy Brief: Network Neutrality", 30
              October 2015,

              Proponents, I. S. B., "SADCDN Working Group Charter", 14
              May 2024, <

   [YouTube]  YouTube, "YouTube Plan Aware Streaming", 21 March 2024,

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   This document represents collaboration and inputs from others,

   *  Abhishek Tiwari

   *  Anoop Tomar

   *  Matt Joras

   *  Wesley Eddy

   *  Alan Frindell

Author's Address

   Bryan Tan

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