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Gestion de la mobilité dans les réseaux ambiants

Abstract : This thesis was motivated by the new ubiquitous context of ambient wireless networks. The Internet protocols were designed 30 years ago without taking into consideration the nomadic use of networks and do not respond to the new constraints of mobility. We aimed to conceive mechanisms to make the mobility transparent to the applications and users. A part of our work was focused on the improvement of handoff delay of physical layer 802.11 to about 20 ms. Host mobility and network changes often require the reconfiguration of several parameters at IP layer. For the local mobility we chosen to allow the hosts to keep theirs IP address unchanged and to propagate host routes in the local domain. On the contrary, for global mobility, the optimal routing in Internet force us to conceive a solution where the mobile hosts change their IP addresses according to the subnet there are connected to. Our solution is based on "end-to-end" paradigm where the two hosts implied in a connection are the only ones to ensure the connection transfer to the new attachment points. It use interception of calls to the socket library and of DNS requests as well as local address translation to virtualise IP addresses into stable host identifiers that are presented to upper layers.
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Contributor : Laurentiu Sorin Paun Connect in order to contact the contributor
Submitted on : Tuesday, February 21, 2006 - 11:19:30 AM
Last modification on : Friday, March 25, 2022 - 11:08:27 AM
Long-term archiving on: : Monday, September 17, 2012 - 12:10:13 PM


  • HAL Id : tel-00011652, version 1




Laurentiu Sorin Paun. Gestion de la mobilité dans les réseaux ambiants. Réseaux et télécommunications [cs.NI]. Institut National Polytechnique de Grenoble - INPG, 2005. Français. ⟨NNT : ⟩. ⟨tel-00011652⟩



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