Opportunistic spectrum usage and optimal control in heterogeneous wireless networks
type: Dataset
description: The present dissertation deals with how to use the precious wireless resources that are usually wasted by under-utilization of networks. We have been particularly interested by all resources that can be used in an opportunistic fashion using different technologies. We have designed new schemes for better and more efficient use of wireless systems by providing mathematical frameworks. In the first part, We have been interested in cognitive radio networks, where a cellular service provider can lease a part of its resources to secondary users or virtual providers. In the second part, we have chosen delay-tolerant networks as a solution to reduce the pressure on the cell traffic, where mobile users come to use available resources effectively and with a cheaper cost. We have focused on optimal strategy for smartphones in hybrid wireless networks. In the last part, an alternative to delay-tolerant networks, specially in regions that are not covered by the cellular network, is to use Ad-hoc networks. Indeed, they can be used as an extension of the coverage area. We have developed a new analytical modeling of the IEEE 802.11e DCF/EDCF. We have investigated the intricate interactions among layers by building a general cross-layered framework to represent multi-hop ad hoc networks with asymmetric topology and traffic
identifier: NNT: 2012AVIG0183
issued: 2026-05-08T04:05:24.490878
language: en
modified: 2026-05-08T04:05:24.490882
contact point: Organization
  fn: CCSD
keyword: cognitive-radio
keyword: dtn
keyword: game-theory
keyword: infoeu-reposemanticsdoctoralthesis
keyword: infoinfo-ohcomputer-science-csother-csoh
keyword: pomdp
keyword: processus-de-decision-markovien
keyword: radio-cognitive
keyword: reseaux-tolerants-au-delai
keyword: theorie-des-jeux
keyword: theses
landing page: https://theses.hal.science/tel-00907120

Opportunistic spectrum usage and optimal control in heterogeneous wireless networks
type: Distribution
format: HTML
issued: 2026-05-08T04:05:24.492268
modified: 2026-05-08T04:05:24.477823
access URL: https://theses.hal.science/tel-00907120

test_moissonnage_selune
type: Agent