Deterministic Latency Network Framework
draft-zha-dln-framework-00

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Network Working Group                                           Y. Zha 
Internet Draft                                     Huawei Technologies                
Intended status: Informational                      
Expires: April 2017                                                   
                                                                      
                                                                      
                                                      October 31, 2016 
 
                                    
                Deterministic Latency Network Framework 
                       draft-zha-dln-framework-00 

Abstract 

   More and more real time applications, such as VR gaming, high 
   frequency trading, Internet of vehicle, require accurate latency 
   guarantee or bound, during service provisioning. Providing End-to-
   End latency guarantee across Internet is increasingly attractive 
   while challenging. The main problem with latency guarantee on 
   Internet is that packet scheduling is still best-effort, and 
   congestion that further introduces latency uncertainty cannot be 
   avoided. This document presents a way of describing latency 
   information that mostly rely on the congestion management such as 
   queue scheduling, and a framework to use such information to 
   guarantee End-to-End latency. 

Status of this Memo 

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   This Internet-Draft will expire on April 30, 2017. 

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 
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Table of Contents 

   1. Introduction .................................................2 
   2. Conventions used in this document ............................3 
   3. End-to-End Latency Guarantee Problem .........................3 
      3.1. Current QoS framework ...................................4 
      3.2. Need of Modeling of Latency .............................5 
      3.3. Need of Measurement of Flow Latency .....................6 
   4. Latency Information Modeling and Interface Framework .........7 
      4.1. Latency Aware PHB .......................................7 
      4.2. Latency Aware Interface .................................9 
   5. Security Considerations ......................................9 
   6. IANA Considerations ..........................................9 
   7. Acknowledgments ..............................................9 
   8. References ...................................................9 
      8.1. Normative References ....................................9 
      8.2. Informative References .................................10 
    
1. Introduction 

   Latency sensitive applications, such as VR gaming, high frequency 
   trading, Internet of vehicle, have become more and more popular. 
   These applications often require a guaranteed or bounded End-to-
   End packet transmission latency. For example, the End-to-End 
   latency bounds of and VR gaming are 1 millisecond and 5 
   millisecond corresponding. Hence, mechanism achieving End-to-End 
   latency guarantee or bound for latency sensitive applications is 
   highly desirable [I-D.liu-dln-use-cases]. 
 
 
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