Transport Modeling Research Group TMRG



The Transport Modeling Research Group (TMRG) is chartered to produce a series of documents on Models for the Evaluation of Transport Protocols. The documents will include a survey of models used in simulations, analysis, and experiments for the evaluation of transport protocols. The output of the TMRG will also include a broad set of simulation test suites, and a set of recommendations for test suites for experiments in test beds. The goal of the work is to improve our methodologies for evaluating transport protocols.

The first set of documents will consider models for the evaluation of congestion control mechanisms. This work will include the simulation test suites and recommendations for experiments mentioned above. Later documents are expected to address models for the evaluation of other aspects of transport protocols (e.g., connection establishment, security, perhaps QoS mechanisms).

The models produced by this group will not have any formal relationship to the IETF standards process. That is, the TMRG will not produce recommendations for the IETF on using simulation or experimental test suites to evaluate transport-related features for standardization. At the same time, one intended use of the test suites is for comparative evaluations of different proposed congestion control mechanisms.

The TMRG is not chartered to discuss the design of new congestion control mechanisms, or to discuss modifications to existing congestion control mechanisms, except in terms of the models needed for the evaluation of such mechanisms. The group is also not chartered to produce evaluations of specific congestion control mechanisms.


Membership is open to any interested parties who intend to remain current with the published documents and mailing list issues. The group is expected to function largely through the mailing list, possibly without any face-to-face meetings.

Concluded Group

This Research Group has completed its work and is no longer active.

The charter and other information on this page is provided as a record of history. Email addresses and links may no longer function.

For inquiries about this former Research Group please email


The TMRG concluded its work on 2011-09-26.


The TMRG was chaired by Lachlan Andrew when it closed.

Mailing List

The TMRG mailing list was It is archived here.

Web Page

Additional TMRG information is (or was) available at