Skip to main content

A Use Case of Packets' Significance Difference with Media Scalability

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Lijun Dong , Kiran Makhijani , Richard Li
Last updated 2022-04-23 (Latest revision 2021-10-20)
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document introduces a use case of packets' significance difference embedded with media scalability. With the dominance of video traffic on the Internet, selectively dropping packets or parts of packets from competing media streams becomes a complementary mechanism when dealing with network congestion. The document describes the characteristics of media scalability, some limitations of existing end-to-end congestion control mechanisms through rate control and adaptation, explains why current ways of entire packet dropping at the traffic class level using in-network active queue management are not most appropriate to meet end users' Quality of Service expectations. The document identifies that there exists "significance difference" among packets or even among parts of the packets within a flow, and brings out a new set of requirements for application and network to support packet significance difference to improve the Quality of Experience of end users.


Lijun Dong
Kiran Makhijani
Richard Li

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)