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[dispatch] Draft on Discarding Priority of RTP Video Packets

Lijun Dong <lijun.dong@futurewei.com> Tue, 12 July 2022 23:58 UTC

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From: Lijun Dong <lijun.dong@futurewei.com>
To: "dispatch@ietf.org" <dispatch@ietf.org>
CC: Richard Li <richard.li@futurewei.com>, Stuart Clayman <s.clayman@ucl.ac.uk>, Muge Sayit <mugefesci@gmail.com>
Thread-Topic: Draft on Discarding Priority of RTP Video Packets
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Date: Tue, 12 Jul 2022 23:58:45 +0000
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Subject: [dispatch] Draft on Discarding Priority of RTP Video Packets
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Hi dispatch:

I want to share my recently submitted draft on “Discarding Priority of RTP Video Packets”.

https://datatracker.ietf.org/doc/draft-dong-priority-rtp-packet/<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-dong-priority-rtp-packet%2F&data=05%7C01%7Clijun.dong%40futurewei.com%7Cf4f099e6e73948d8ec8b08da645f3cd2%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C637932657449689304%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=Z1%2BLmuaJWeZHd6TIDI%2F0o3ukSdRXRNi8oZb1hKaxYro%3D&reserved=0>

It is observed that significance difference or discarding priority might exist among RTP packets which encapsulate video streaming data with the existing modern video codecs. So selectively dropping RTP packets according to their significances could be a complementary mechanism when dealing with network congestion and improve end user’s QoE. The draft proposes that the video source or edge node with media-awareness could perform mapping of RTP packet discarding priority carried in RTP NALU header to a DSCP value, such that the priority-based dropping could happen at the packet level when network congestion happens.

I look forward to your generous comments and suggestions.

Lijun

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