Journal of
Engineering and Technology Research

  • Abbreviation: J. Eng. Technol. Res.
  • Language: English
  • ISSN: 2006-9790
  • DOI: 10.5897/JETR
  • Start Year: 2009
  • Published Articles: 198

Full Length Research Paper

SCTP-multihoming for intra and inter-RAT data handover management

Mériem Afif1,2*, Sami Tabbane1, Philippe Martins2 and Philippe Godlewski2
  1Mediatron, Ecole Supérieure des Communications de Tunis (Sup'Com), Route Raoued, Km3.5, 2083 Cité El Ghazala – Tunisia. 2Telecom-Paris - Ecole Nationale Supérieure des Télécommunications LTCI-UMR 5141 CNRS, 46 rue Barrault, 75634 Paris Cedex 13, France.
Email: [email protected]

  •  Accepted: 08 June 2009
  •  Published: 31 July 2009



SCTP (Stream Control Transmission Protocol) provides interesting features, as multihoming and multistreaming, to enhance information transport performances over air interfaces. Additional extensions have been proposed to adapt SCTP to wireless context (mSCTP: mobile SCTP). However, published approaches do not take into account channel state information during handover processes. The present work proposes a new extension for SCTP which aims at improving transport protocol performance in wireless environments: QoS_Measurement_chunk. It relies a) on a cross-layer mechanism taking place between SCTP and the link layer and b) on a new SCTP control chunk. It allows the emission of radio information from the mobile to its SCTP peer. These information can be used by SCTP layer to adapt transmission rate to the current radio transmission conditions. So, SCTP congestion control parameters are modified to take into account new radio conditions. The combined using of QoS_Measurement_Chunk and multihoming feature provide a data handover with a performance improvement. This new mechanism is useful to perform intra or inter RAT (Radio Access Technology) data handover. The obtained simulation results are compared with the standard SCTP when downlink transmission is considered in handover situation and present better performance in terms of data throughput over the access network.


Key words: Inter-RAT handover, SCTP, Qos_measurement_chunk, cwnd adaptation, flow control.