Deterministic Latency Network Use Cases
draft-liu-dln-use-cases-00

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Network Working Group                                            X. Liu 
                                                    Huawei Technologies         
Internet-Draft                                                        
Intended status: Informational                                        
                                                                       
Expires: April 2017                                   October 31, 2016 
                                   
 
                  Deterministic Latency Network Use Cases 
                         draft-liu-dln-use-cases-00 

Abstract 

   This draft documents low latency requirements in several diverse 
   industries including virtual reality, electrical utilities protection 
   and cloud-based service. For each case, this document will identify 
   the application, representative solutions used today and its 
   requirements on deterministic latency mechanism. 

Status of this Memo 

   This Internet-Draft is submitted to IETF in full conformance with the 
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   This Internet-Draft will expire on April 30, 2017. 

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   Copyright (c) 2016 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 
 
 
 
Liu                        Expires April 30 2017               [Page 1] 


Internet-Draft             Use cases of DLN               October 2016 
    

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Table of Contents 

   1.   Introduction .............................................. 2 
      1.1. Conventions used in this document ...................... 3 
   2.   Cloud VR/Gaming Service ................................... 3 
      2.1. Use Case Description ................................... 3 
      2.2. Delay in a VR system ................................... 4 
      2.3. Cloud VR/Gaming Asks ................................... 7 
   3.   Electrical Utility Relay Protection ....................... 7 
      3.1. Use Case Description ................................... 7 
      3.2. Delay Requirements on Protection Scheme ................ 8 
      3.3. Precision Delay Compensate Technology .................. 9 
      3.4. Relay Protection Asks .................................. 9 
   4.   Cloud-based Service ....................................... 9 
      4.1. Use Case Description ................................... 9 
      4.2. Cloud-based Service Asks .............................. 10 
   5.   Security Considerations .................................. 10 
   6.   IANA Considerations ...................................... 10 
   7.   References ............................................... 10 
      7.1. Informative References ................................ 10 
   8.   Acknowledgments .......................................... 11 
    
1. Introduction 

   Deterministic latency network (DLN) is defined to provide guaranteed 
   deterministic latency for specific traffic, especially for latency-
   critical traffic. However, there are no current off-the-shelf 
   solutions for DLN. Distinguished from DetNet [I-D.finn-detnet-
   architecture] that focuses on the solution of Layer 2-3 packet 
   forwarding, a feasible DLN solution is supposed to provide a latency 
   information obtaining mechanism including delay-aware modeling and 
   measurement, latency management mechanism with interfaces and 
   protocols to maintain the performance of latency sensitive 
   applications. Latency slicing and latency modeling are alternatives 
   in discussion currently. More specifically, DLN is: 

   -Face to upper layer, define delay-aware PHB and related OAM 
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