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Pre-congestion notification in mobile networks

Document type: Expired Internet-Draft (individual)
Document stream: No stream defined
Last updated: 2012-09-06 (latest revision 2012-03-05)
Intended RFC status: Unknown
Other versions: (expired, archived): plain text, pdf, html

Stream State:No stream defined
Document shepherd: No shepherd assigned

IESG State: Expired
Responsible AD: (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found here:


Mobile networks may be divided into two main segments: the radio segment, and the wireline segment. This document highlights that the algorithms leading to pre-congestion notification (e.g. ECN marking) are usually significantly different for these two segments, and not defined or documented in general over the radio segment. It also explains that using ECN bits leads to having a unique signal for notifying a pre-congestion related to two separate segments with very different notification algorithms. Some consequences are questioned, as well as the potential benefits of being able to identify where the congestion comes from. This document finally discusses the possibility to take into account the radio conditions of the terminals when counting the volume of congestion over the radio segment.


Sebastien Jobert <>
Isabelle Hamchaoui <>

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