Monday, March 14, 2011

IETF Draft on "Use case for congestion exposure" (CONEX)

A new draft memo from the IETF "describes a mobile communications use case for congestion exposure (CONEX) with a particular focus on mobile communication networks such as 3GPP LTE.  The draft describes the architecture of these networks (access and core networks), current QoS mechanisms and    then discusses how congestion exposure concepts could be applied. Based on this, this memo suggests a set of requirements for CONEX mechanisms that particularly apply to mobile networks"

See "Mobile Communication Congestion Exposure Scenario" - here. Authors are Dirk Kutscher (picture), Faisal Ghias Mir and Rolf Winter from NEC, Suresh Krishnan and Ying Zhang from Ericsson. 

See also "IETF: Experiments to Harmonize P2P Technology with the Infrastructure" - here.
"The CONEX congestion exposure mechanism is intended as a general technology that could be applied as a key element of congestion management solutions in a variety of use cases.  The IETF CONEX WG will however work on a specific use case, where the end hosts and the network that contains the destination end host are CONEX-enabled but other networks need not be .. it can be said that traffic management in 3GPP EPS and other mobile communication architectures in very important.  Previously more static approach based on admission control and static QoS have been applied, but recently, there has been a perceived need for more dynamic mechanisms such as DPIAdding CONEX support might thus require revisiting the PCC architecture, depending on the scope and impact of a CONEX-based traffic management approach".

Draft for "Congestion Exposure (ConEx) Concepts and Abstract Mechanism" - here.

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