Analysis of TFRC in Disconnected Scenarios and Performance Improvements with Freeze-DCCP

Abstract : We present enhancements to the TCP-Friendly Rate Con- trol mechanism (TFRC) which are designed to better cope with the intermittent connectivity available to mobile devices or in Delay Tolerant Networks. Our aim is to prevent losses during disconnected periods and quickly adapt to new network conditions. We propose to suspend the transmission before disconnections occur in a way inspired by Freeze-TCP, then probe, in a new way, the network after reconnecting to enable full use of the newly available bandwidth. We first evaluate the potential performance gains for realistic network parameters. We then describe the proposed additions to TFRC and their implementation within the Datagram Congestion Control Protocol (DCCP) in ns-2. Comparisons of simulation results for example mobility scenarios show that the proposed enhancements enable faster recovery upon reconnection as well as significantly improved adjustment to the newly available network conditions.
Type de document :
Communication dans un congrès
MobiArch 2009 - The 4th ACM International Workshop on Mobility in the Evolving Internet Architecture, Jun 2009, Kraków, Poland. pp.n/a, 2009
Liste complète des métadonnées

https://hal-mines-paristech.archives-ouvertes.fr/hal-00646372
Contributeur : Olivier Mehani <>
Soumis le : mardi 29 novembre 2011 - 17:57:59
Dernière modification le : lundi 12 novembre 2018 - 10:57:26

Identifiants

  • HAL Id : hal-00646372, version 1

Citation

Olivier Mehani, Roksana Boreli, Thierry Ernst. Analysis of TFRC in Disconnected Scenarios and Performance Improvements with Freeze-DCCP. MobiArch 2009 - The 4th ACM International Workshop on Mobility in the Evolving Internet Architecture, Jun 2009, Kraków, Poland. pp.n/a, 2009. 〈hal-00646372〉

Partager

Métriques

Consultations de la notice

280