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Enhanced Use Cases for Scaling Deterministic Networks
draft-zhao-detnet-enhanced-use-cases-01

Document Type Active Internet-Draft (individual)
Authors Junfeng Zhao , Quan Xiong , Zongpeng Du
Last updated 2024-10-18
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draft-zhao-detnet-enhanced-use-cases-01
DETNET                                                           J. Zhao
Internet-Draft                                                     CAICT
Intended status: Standards Track                                Q. Xiong
Expires: 21 April 2025                                   ZTE Corporation
                                                                   Z. Du
                                                            China Mobile
                                                         18 October 2024

         Enhanced Use Cases for Scaling Deterministic Networks
                draft-zhao-detnet-enhanced-use-cases-01

Abstract

   This document describes use cases and network requirements for
   scaling deterministic networks which is not covered in RFC8578, such
   as industrial internet, high experience video and intelligent
   computing, and outlines the common properties implied by these use
   cases.

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
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   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 21 April 2025.

Copyright Notice

   Copyright (c) 2024 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   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
   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  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Enhanced Use Cases and Network Requirements . . . . . . . . .   4
     3.1.  Industrial Internet . . . . . . . . . . . . . . . . . . .   4
       3.1.1.  Use Case Description  . . . . . . . . . . . . . . . .   4
         3.1.1.1.  Machine Vision  . . . . . . . . . . . . . . . . .   4
         3.1.1.2.  Remote Control  . . . . . . . . . . . . . . . . .   5
         3.1.1.3.  AGV Intelligent Control . . . . . . . . . . . . .   6
         3.1.1.4.  AR Assistance . . . . . . . . . . . . . . . . . .   6
       3.1.2.  Requests to the IETF  . . . . . . . . . . . . . . . .   7
     3.2.  High Experience Video . . . . . . . . . . . . . . . . . .   8
       3.2.1.  Use Case Description  . . . . . . . . . . . . . . . .   8
         3.2.1.1.  Cloud VR and AR . . . . . . . . . . . . . . . . .   8
         3.2.1.2.  Cloud Games . . . . . . . . . . . . . . . . . . .   9
         3.2.1.3.  Cloud Live Streaming  . . . . . . . . . . . . . .  10
       3.2.2.  Requests to the IETF  . . . . . . . . . . . . . . . .  10
     3.3.  Intelligent Computing . . . . . . . . . . . . . . . . . .  10
       3.3.1.  Use Case Description  . . . . . . . . . . . . . . . .  11
         3.3.1.1.  Scientific Research . . . . . . . . . . . . . . .  11
         3.3.1.2.  Autonomous Vehicles . . . . . . . . . . . . . . .  11
       3.3.2.  Requests to the IETF  . . . . . . . . . . . . . . . .  12
   4.  Use Case Common Themes  . . . . . . . . . . . . . . . . . . .  12
     4.1.  Differentiated Deterministic Requirements . . . . . . . .  13
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  14
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

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1.  Introduction

   According to [RFC8655], Deterministic Networking (DetNet) operates at
   the IP layer and delivers service which provides extremely low data
   loss rates and bounded latency within a network domain.  The bounded
   latency indicates the minimum and maximum end-to-end latency from
   source to destination and bounded jitter (packet delay variation).
   [RFC8578] has presented use cases for diverse industries and these
   use cases differ in their network topologies and requirements.  It
   should provide specific desired behaviors in DetNet.

   [I-D.ietf-detnet-scaling-requirements] focus on the scaling
   deterministic networks and describes the enhanced requirements for
   DetNet enhanced data plane including the deterministic latency
   guarantees and it also mentioned the enhanced DetNet should support
   different levels of application requirements which is important for
   the DetNet deployment.  There are a variety of use cases in scaling
   deterministic networks which is not covered in [RFC8578].  It is
   required to provide the typical use cases for scaling deterministic
   networks and analyze the SLAs requirements and desired behaviors in
   enhanced DetNet.

   The industries covered by the use cases in this document are:

   *  Industrial Internet (section 3.1)

   *  High Experience Video (section 3.2)

   *  Intelligent Computing (section 3.3)

   This document describes use cases and network requirements for
   scaling deterministic networks including industrial internet, high
   experience video and intelligent computing and outlines the common
   properties implied by these use cases.

1.1.  Requirements Language

   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].

2.  Terminology

   The terminology is defined as [RFC8655] and [RFC8578].

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3.  Enhanced Use Cases and Network Requirements

3.1.  Industrial Internet

3.1.1.  Use Case Description

   In the industrial internet, the entire industrial process can be
   roughly divided into research and development design, production
   manufacturing, operation and maintenance services.  The typical
   application prospects of deterministic networks mainly include ultra-
   high definition video, cloud-based robots, remote control, machine
   vision, and cloud-based AGV.  The scenarios such as machine vision,
   AGV intelligent control, remote control, and AR assisted robotic arm
   control demand deterministic requirements.

3.1.1.1.  Machine Vision

   The machine vision system needs to achieve real-time remote
   monitoring function, which requires high-speed and large connectivity
   characteristics.  It can monitor the production process execution
   management system (MES) of manufacturing enterprises through mobile
   and portable terminals without entering the workshop, and obtain the
   operating status of the visual inspection system, such as normal
   operating time, effective operating time, fault cause etc.  It is
   bandwidth sensitive and demand cloud-based deployment and wide area
   networks requirements.

   The following table shows the main network requirements of machine
   vision.(These metrics are based on 3GPP Standard 3GPP TS 22.104, 3GPP
   TR 22.261, and 3GPP TR 22.829.)

   +---------------------------------+---------------------------------+
   |    Machine Vision Requirement   |            Attribute            |
   +---------------------------------+---------------------------------+
   |      Bandwidth                  |   Real time upload of image     |
   |                                 |   information:>50M              |
   |                                 |                                 |
   |     One-way maximum delay       |              10 ms              |
   |                                 |                                 |
   |           Availability          |             99.99%              |
   +---------------------------------+---------------------------------+

               Figure 1: Requirements of Machine Vision

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3.1.1.2.  Remote Control

   Remote control can ensure personnel safety, improve production
   efficiency, and achieve assistance from multiple production units.
   In order to achieve the effect of remote control, the controller
   needs to send status information to the controller through a
   communication network based on remote perception.  The controller
   analyzes and makes decisions based on the received status
   information, and then sends corresponding action instructions to the
   controller through the communication network.  The controller
   executes the corresponding actions based on the received action
   instructions, completing the remote control process.  In order to
   guarantee control effectiveness, communication network latency,
   jitter, and reliability are even more important.  The typical
   application is cloud-based PLC (Programmable Logic Controller).  It
   is jitter sensitive and cloud-based PLC demand wide area networks
   requirements.

   The following table describes requirements of Cloud-based PLC.
   (These metrics are based on 3GPP Standard 3GPP TS 22.104, 3GPP TR
   22.261, and 3GPP TR 22.829.)

   +-------------------------------+-----------------------------------+
   |  Cloud-based PLC Requirement  |            Attribute              |
   +-------------------------------+-----------------------------------+
   |     Bandwidth                 | Image/video stream upload,        |
   |                               |  upstream>50Mbps;                 |
   |                               | PLC control command issued,       |
   |                               |  downstream>50kbps;               |
   |                               |                                   |
   |      One-way maximum delay    |Within workshop level equipment:1ms|
   |                               |Workshop level equipment room:10ms |
   |                               |Remote operation in the park/city/ |
   |                               |wide area: image upstream:20ms;    |
   |                               |Command issuance:10ms;             |
   |                               |                                   |
   |          Maximum jitter       |      Less than 100 us             |
   |                               |                                   |
   |           Availability        |             99.999%               |
   +-------------------------------+-----------------------------------+

              Figure 2: Requirements of Cloud-based PLC

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3.1.1.3.  AGV Intelligent Control

   Automated Guided Vehicle (AGV) is an intelligent device widely used
   in highly automated places such as factory workshops, airports,
   ports, freight warehouses, etc.  It generally consists of three
   parts: walking, navigation, and control systems.  The automated AGV
   is equipped with a camera to capture the scene in front of the
   vehicle and upload it to the MEC and navigation system in real-time
   through a 5G module for image analysis and route planning, achieving
   fully automated logistics transportation.  AGV has a certain driving
   speed and is often used in cluster operation scenarios.  Therefore, a
   network connection with high deterministic delay and jitter is
   required to transmit control signals.

   The following table describes requirements of AGV intelligent
   control.(These metrics are based on 3GPP Standard 3GPP TS 22.104,
   3GPP TR 22.261, and 3GPP TR 22.829.)

   +-----------------------------+--------------------------------------+
   | AGV Intelligent Control     |                                      |
   |              Requirement    |            Attribute                 |
   +-----------------------------+--------------------------------------+
   |     Bandwidth               |Schedule communication:>1Mbps,        |
   |                             |Real time communication:1Mbps~200Mbps |
   |                             |Visual: 10Mbps~1Gbps                  |
   |                             |                                      |
   |    One-way maximum delay    |Schedule communication:100ms          |
   |                             |Dispatching communication:100ms       |
   |                             |Real time communication:20ms~40ms     |
   |                             |Visual: 10ms~100ms                    |
   |     Availability            |             99.9999%                 |
   +-----------------------------+--------------------------------------+

          Figure 3: Requirements of AGV Intelligent Control

3.1.1.4.  AR Assistance

   With the intelligent and networked transformation and upgrading of
   industrial manufacturing equipment, more and more AR assisted
   intelligent robots will be used in advanced manufacturing.  At the
   same time, there are scenarios where multiple robot systems work
   together, such as welding, stamping, etc.  The robotic arm is the
   most widely used automated mechanical device in the field of robotics
   technology, in areas such as industrial manufacturing, medical
   treatment, entertainment services, military, semiconductor
   manufacturing, and space exploration.  The more axis joints of the AR
   assisted robotic arm, the higher the degree of freedom, and the

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   larger the angle of the operating range.

   The following table describes requirements of AR Assistance.  (These
   metrics are based on 3GPP Standard 3GPP TS 22.104, 3GPP TR 22.261,
   and 3GPP TR 22.829.)

          +---------------------------+----------------------------+
          |  AR Assistance Requirement|            Attribute       |
          +---------------------------+----------------------------+
          |     Bandwidth             | Maintenance guidance:      |
          |                           |  downstream>50Mbps         |
          |                           |  upstream > 20Mbps         |
          |                           |  downstream>50kbps         |
          |                           | Auxiliary assembly: >50Mbps|
          |                           |  downstream: 1Mbps~30Mbps  |
          |                           |                            |
          |  One-way maximum delay    |Maintenance guidance:20ms   |
          |                           |Auxiliary assembly:10ms     |
          |                           |                            |
          |    Maximum jitter         |      Less than 500 us      |
          |                           |                            |
          |    Availability           |        99.999%             |
          +---------------------------+----------------------------+

                  Figure 4: Requirements of AR Assistance

3.1.2.  Requests to the IETF

   *  Real-time remote monitoring, which requires high-speed
      connectivity

   *  Cloud-based deployment, which requires transmission through
      heterogeneous networks

   *  Cloud-based centralized management

   *  Remote control is jitter sensitive, e.g. less than 100us

   *  Industrial camera images with high definition, with little or no
      compression, which requires high bandwidth

   *  Low end-to-end delay requirements differ from applications and
      services, such as 10ms and 20ms

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3.2.  High Experience Video

3.2.1.  Use Case Description

   High Experience Video refers to video content that delivers an
   exceptional viewing experience through advanced technologies and
   production techniques.  It demands high-quality transmission to
   ensure that the content is delivered without compromising its
   integrity and impact.  High Experience Video relies on deterministic
   networks to deliver the best possible viewing experience, which
   requires a combination of low latency, low jitter, high bandwidth,
   and high reliability.  The typical scenarios of High Experience Video
   involve applications that have high requirements for video quality,
   transmission speed, and user experience such as cloud VR and AR,
   cloud games and cloud live streaming.

3.2.1.1.  Cloud VR and AR

   The key feature of Cloud Virtual Reality/Augmented Reality (Cloud VR/
   AR) is that content is on the cloud and rendering is on the cloud.
   By utilizing powerful cloud capabilities, VR/AR user experience is
   improved and terminal costs are reduced.  VR/AR will quickly enter
   Cloud VR/AR to promote the rapid popularization of VR/AR services.
   Cloud AR/VR services exhibit strong latency sensitivity, and
   different levels of experience require differentiated certainty.
   Cloud VR/AR rendering and streaming latency are divided into three
   parts: cloud processing, network transmission, and terminal
   processing.  Cloud VR/AR operation latency is divided into cloud
   rendering latency and terminal secondary rendering and refresh
   rendering processes.

   The following table describes requirements of Cloud VR/AR.  (These
   metrics are based on 3GPP TR 22.261).

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+----------------------+-----------+---------------------+----------------+
|    Requirement       | Bandwidth |One-way maximum delay|Packet loss rate|
+----------------------+-----------+---------------------+----------------+
| Cloud VR/AR Video    |downstream |  50ms               |no more than    |
|  comfortable         | >75Mbps   |                     |0.001%          |
|  experience          |           |                     |                |
+----------------------+-----------+---------------------+----------------+
| Cloud VR/AR Video    |downstream |  50ms               |no more than    |
|comfortable experience|>140Mbps   |                     |0.001%          |
|full perspective      |           |                     |                |
+----------------------+-----------+---------------------+----------------+
| Cloud VR/AR strong   |downstream |  15ms               |no more than    |
|interaction           |>260Mbps   |                     |0.001%          |
|comfortable experience|           |                     |                |
|I frame and P frame   |           |                     |                |
+----------------------+-----------+---------------------+----------------+
| Cloud VR/AR strong   |downstream |  8ms                |no more than    |
|interaction           |1Gbps      |                     |0.0001%         |
|8K ideal experience   |           |                     |                |
|I frame and P frame   |           |                     |                |
+----------------------+-----------+---------------------+----------------+

              Figure 5: The Requirements of Cloud VR/AR

3.2.1.2.  Cloud Games

   Cloud Game is an online gaming technology based on cloud computing
   technology.  Cloud gaming technology enables lightweight devices with
   relatively limited graphics processing and data computing
   capabilities to run high-quality games.  In cloud game scenarios,
   game related computing is not run on the user terminal, but on a
   cloud server, which renders the game scene as a video and audio
   stream and transmits it to the user terminal through the network.
   The user's cloud gaming experience relies on a high-quality, low
   latency network environment.

   The following table describes requirements of Cloud Games:

+----------------------+-----------+---------------------+----------------+
|    Requirement       | Bandwidth |One-way maximum delay|Video resolution|
+----------------------+-----------+---------------------+----------------+
| Junior level         | >8Mbps    |  150ms              |720P            |
+----------------------+-----------+---------------------+----------------+
| 3A professional level| >12Mbps   |  60ms               |1080P           |
+----------------------+-----------+---------------------+----------------+
| Level of esports     | >40Mbps   |  60ms               |4K              |
+----------------------+-----------+---------------------+----------------+

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                Figure 6: Requirements of Cloud Games

3.2.1.3.  Cloud Live Streaming

   For scenarios such as concerts, press conferences, sports events, and
   live events, cloud live streaming uses 5G uplink high bandwidth to
   transmit 8K/VR videos.  Combined with various applications such as
   video analysis based on live streaming services, character and scene
   recognition, real-time presentation of athlete and event data, and VR
   live streaming interaction, it provides a brand new and rich event
   viewing experience.

   The following table describes requirements of Cloud live streaming:

               +------------------------+---------------------+
               | 8K live streaming      |  Attribute          |
               | 8K video feedback      |                     |
               +------------------------+---------------------+
               |     Bandwidth          |  upstream>100Mbps   |
               |                        |                     |
               |  One-way maximum delay |  200ms              |
               |                        |                     |
               |    Availability        |  99.9%              |
               |                        |                     |
               |   Frame rate           |  60                 |
               +------------------------+---------------------+

               Figure 7: Requirements of Cloud Live Streaming

3.2.2.  Requests to the IETF

   *  High requirements for video quality and transmission speed

   *  Cloud processing with real-time interaction

   *  Cloud-based deployment, which requires transmission through
      heterogeneous networks

   *  No jitter requirements

   *  Packet loss requirement is less than 0.001%

   *  End-to-end delay requirements differ from applications and
      services, such as 8ms, 15ms, 50ms, 150ms, 200ms and so on

3.3.  Intelligent Computing

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3.3.1.  Use Case Description

   Intelligent computing refers to the integration of artificial
   intelligence (AI) techniques with computational methods to enhance
   the performance, efficiency, and capabilities of computing systems.
   It involves the use of algorithms, machine learning models, and other
   AI approaches to solve complex problems, analyze large datasets, and
   improve decision-making processes.  Intelligent Computing has
   specific requirements for deterministic networks to ensure reliable
   and predictable performance such as predictable latency, low packet
   loss rate, high throughput and reliability.  The typical scenarios
   involve applications such as AI-based scientific research and
   autonomous vehicles and so on.

3.3.1.1.  Scientific Research

   Intelligent computing is used to provide computing and data analysis
   capabilities, which are crucial for handling large-scale scientific
   simulations and datasets such as astronomy, climate science, and
   bioinformatics.  In scientific research, a large amount of computing
   power resources such as CPU, GPU, memory, and other P-level or higher
   are usually required.  The network needs to provide services for data
   volume of 10G to 100G or above, which requires high bandwidth, high
   reliability and high throughput with ultra-low packet loss.

   Many applications in scientific research, such as remote
   observations, real-time data analysis, and distributed computing,
   require networks to provide stable low latency and high reliability.
   It must provide millisecond or even microsecond level latency and
   jitter guarantees.  For example, in nuclear fusion experiments, the
   carrier network is required to have 99.999% availability.

3.3.1.2.  Autonomous Vehicles

   Intelligent computing is used in the development of self-driving
   cars, which rely on AI algorithms for perception, decision-making,
   and control.  Autonomous vehicles refers to the technology of
   vehicles that are capable of navigating without the need for human
   input such as identifying other vehicles, pedestrians, and traffic
   signals.  It relies heavily on deterministic forwarding to ensure
   safe, efficient, and reliable operation.  It is also challenging for
   big data management of autonomous driving.  Vehicles record data from
   4K HD cameras, laser scanners, and radars on the road.  Each vehicle
   can generate 80TB of data per day, which requires data-intensive
   transmission.

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   V2X (Vehicle-to-Everything) is a fundamental component of the
   autonomous driving ecosystem, providing the necessary communication
   backbone that enables vehicles to interact with their environment in
   a safe and efficient manner.  V2X provides the communication
   infrastructure that enables vehicles to exchange information with
   each other (V2V), with roadside infrastructure (V2I), with
   pedestrians (V2P), and with the network (V2N).  This exchange of
   information is crucial for autonomous vehicles to make informed
   decisions, improve navigation accuracy, and enhance overall road
   safety.  The following table describes requirements of 5G V2X which
   is divided into four scenarios.  (These metrics are based on 3GPP TR
   22.886)

       +----------------------+---------------------+--------------+
       |    Requirement       | Communication Delay | Availability |
       +----------------------+---------------------+--------------+
       | Vehicles Platooning  |    10~25ms          | 99%~99.99%   |
       +----------------------+---------------------+--------------+
       | Extended Sensors     |    3~100ms          | 99%~99.999%  |
       +----------------------+---------------------+--------------+
       | Advanced Driving     |    3~100ms          | 99%~99.999%  |
       +----------------------+---------------------+--------------+
       | Remote Driving       |    5ms              |  99.999%     |
       +----------------------+---------------------+--------------+

             Figure 8: The Requirements of Autonomous Vehicles

3.3.2.  Requests to the IETF

   *  Real-time communication

   *  Data-intensive transmission with high throughput and ultra-low
      packet loss

   *  Low bounded latency, such as us~ms

   *  High availability, such as 99.999%

4.  Use Case Common Themes

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4.1.  Differentiated Deterministic Requirements

   Classification and characteristics has been summarized from the
   requirements of use cases as described in [RFC8578] and this
   documents.  Seven levels of typical applications have been defined
   including on-site production control, remote control, production
   monitoring, production collection, video AI, AR/VR high experience
   video and intelligent computing.  Different levels of applications
   differ in the network ranges and SLAs requirements such as bounded
   latency, jitter, bandwidth, availability and isolation.

   The following table summarizes deterministic requirements of
   industrial internet, cloud video and intelligent computing
   applications, etc.

+---+------------+--------------------+---------------------------------------------------------+
|   | Use Case   | Typical            |       Differentiated Deterministic Requirements         |
|   |            | Applications       +----------+----------+---------+-------------------------+
|   |            |                    |Bandwidth | Delay    |  Jitter |Packet Loss| Availability|
+---+------------+--------------------+----------+----------+---------+-----------+-------------+
| 1 |Industrial  |Machine Vision      |  Low     |  Low     |   N/A   |    N/A    |   Medium    |
|   |Internet    |                    |          |          |         |           |             |
|   |            +--------------------+----------+----------+---------+-----------+-------------+
|   |            |Remote Control      |  Low     |  Low     |Ultra-low|    N/A    |   High      |
|   |            +--------------------+----------+----------+---------+-----------+-------------+
|   |            |AGV Control         |Low~High  |Low~Medium| N/A     |    N/A    | Ultra-high  |
|   |            +--------------------+----------+----------+---------+-----------+-------------+
|   |            |AR Assistance       | Low      | Low      |Ultra-low|    N/A    |   High      |
+---+------------+--------------------+----------+----------+---------+-----------+-------------+
| 2 |High        |Cloud VR and AR     |Medium    | Low      |  N/A    | Ultra-low |    N/A      |
|   |Experience  |                    | ~High    |          |         |           |             |
|   |Video       |                    |          |          |         |           |             |
|   |            +--------------------+----------+----------+---------+-----------+-------------+
|   |            |Cloud Games         | Low      | High     |   N/A   |    N/A    |   N/A       |
|   |            +--------------------+----------+----------+---------+-----------+-------------+
|   |            |Cloud Live Streaming| Medium   | High     |   N/A   |    N/A    |   Medium    |
+---+------------+--------------------+----------+----------+---------+-----------+-------------+
| 3 |Intelligent |Scientific Research |Ultra-high|  Low     |   N/A   | Ultra-low |  Ultra-high |
|   |Computing   |                    |          |          |         |           |             |
|   |            +--------------------+----------+----------+---------+-----------+-------------+
|   |            |Autonomous Vehicles |Ultra-high|  Low     |  N/A    | Ultra-low |  Ultra-high |
+---+------------+--------------------+----------+----------+---------+-----------+-------------+

          Figure 9: Characteristics of Typical Applications

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   Since the DetNet applications differ in their requirements, it
   demands specific desired behavior and different services requires
   differentiated DetNet QoS.  The classification of the deterministic
   flows within different levels should be taken into considerations.
   It is required to provide Latency, bounded jitter and packet loss
   dynamically and flexibly in all scenarios for each characterized
   flow.  For example, as the figure shows, the services can be
   classified into 4 types and DetNet applications and related
   deterministic behaviors are differentiated within each type.

   +--------------+---------+--------------+---------------+----------+
   |Classification|     1   |    2         |     3         |     4    |
   +--------------+---------+--------------+---------------+----------+
   |Deterministic |Low      |Low delay and |Low delay and  | Ultra-low|
   |Forwarding    |delay    |high bandwidth|Low packet loss| delay    |
   |Behaviors     |         |              |               |and jitter|
   +--------------+---------+--------------+---------------+----------+
   |Applications  |Machine  |Cloud         |Autonomous     |Remote    |
   |Examples      |Vision   |AR/VR         |Vehicles       |Control   |
   +--------------+---------+--------------+---------------+----------+

            Figure 10: Classification of Deterministic Behaviors

5.  Security Considerations

   Security considerations for DetNet are covered in the DetNet
   Architecture [RFC8655] and DetNet use cases [RFC8578] and DetNet
   security considerations [RFC9055].

6.  IANA Considerations

   This document makes no requests for IANA action.

7.  Acknowledgements

   The authors would like to acknowledge Aihua Liu and Bin Tan for their
   thorough review and very helpful comments.

8.  References

8.1.  Normative References

   [I-D.ietf-detnet-scaling-requirements]
              Liu, P., Li, Y., Eckert, T. T., Xiong, Q., Ryoo, J.,
              zhushiyin, and X. Geng, "Requirements for Scaling

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              Deterministic Networks", Work in Progress, Internet-Draft,
              draft-ietf-detnet-scaling-requirements-06, 22 May 2024,
              <https://datatracker.ietf.org/doc/html/draft-ietf-detnet-
              scaling-requirements-06>.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,
              <https://www.rfc-editor.org/info/rfc2119>.

   [RFC8174]  Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
              2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
              May 2017, <https://www.rfc-editor.org/info/rfc8174>.

   [RFC8578]  Grossman, E., Ed., "Deterministic Networking Use Cases",
              RFC 8578, DOI 10.17487/RFC8578, May 2019,
              <https://www.rfc-editor.org/info/rfc8578>.

   [RFC8655]  Finn, N., Thubert, P., Varga, B., and J. Farkas,
              "Deterministic Networking Architecture", RFC 8655,
              DOI 10.17487/RFC8655, October 2019,
              <https://www.rfc-editor.org/info/rfc8655>.

   [RFC8664]  Sivabalan, S., Filsfils, C., Tantsura, J., Henderickx, W.,
              and J. Hardwick, "Path Computation Element Communication
              Protocol (PCEP) Extensions for Segment Routing", RFC 8664,
              DOI 10.17487/RFC8664, December 2019,
              <https://www.rfc-editor.org/info/rfc8664>.

   [RFC9055]  Grossman, E., Ed., Mizrahi, T., and A. Hacker,
              "Deterministic Networking (DetNet) Security
              Considerations", RFC 9055, DOI 10.17487/RFC9055, June
              2021, <https://www.rfc-editor.org/info/rfc9055>.

   [RFC9320]  Finn, N., Le Boudec, J.-Y., Mohammadpour, E., Zhang, J.,
              and B. Varga, "Deterministic Networking (DetNet) Bounded
              Latency", RFC 9320, DOI 10.17487/RFC9320, November 2022,
              <https://www.rfc-editor.org/info/rfc9320>.

Authors' Addresses

   Junfeng Zhao
   CAICT
   China
   Email: zhaojunfeng@caict.ac.cn

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   Quan Xiong
   ZTE Corporation
   China
   Email: xiong.quan@zte.com.cn

   Zongpeng Du
   China Mobile
   China
   Email: duzongpeng@chinamobile.com

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