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                                       Details van artikel 5 van 13 gevonden artikelen
 
 
  CROSS-LAYER RESOURCE ALLOCATION SCHEME UNDER HETEROGENEOUS CONSTRAINTS FOR NEXT GENERATION HIGH RATE WPAN
 
 
Titel: CROSS-LAYER RESOURCE ALLOCATION SCHEME UNDER HETEROGENEOUS CONSTRAINTS FOR NEXT GENERATION HIGH RATE WPAN
Auteur: Ayman Khalil
Matthieu Crussiere
Jean-Francois Helard
Verschenen in: International journal of network security & its applications
Paginering: Jaargang 2 (2010) nr. 3 pagina's 18-34
Jaar: 2010
Inhoud: In the next generation wireless networks, the growing demand for new wireless applications isaccompanied with high expectations for better quality of service (QoS) fulfillment especially formultimedia applications. Furthermore, the coexistence of future unlicensed users with existing licensedusers is becoming a challenging task in the next generation communication systems to overcome theunderutilization of the spectrum. A QoS and interference aware resource allocation is thus of specialinterest in order to respond to the heterogeneous constraints of the next generation networks. In thiswork, we address the issue of resource allocation under heterogeneous constraints for unlicensed multibandultra-wideband (UWB) systems in the context of Future Home Networks, i.e. the wireless personalarea network (WPAN). The problem is first studied analytically using a heterogeneous constrainedoptimization problem formulation. After studying the characteristics of the optimal solution, we propose alow-complexity suboptimal algorithm based on a cross-layer approach that combines informationprovided by the PHY and MAC layers. While the PHY layer is responsible for providing the channelquality of the unlicensed UWB users as well as their interference power that they cause on licensed users,the MAC layer is responsible for classifying the unlicensed users using a two-class based approach thatguarantees for multimedia services a high-priority level compared to other services. Combined in anefficient and simple way, the PHY and MAC information present the key elements of the aimed resourceallocation. Simulation results demonstrate that the proposed scheme provides a good tradeoff betweenthe QoS satisfaction of the unlicensed applications with hard QoS requirements and the limitation of theinterference affecting the licensed users.
Uitgever: Academy & Industry Research Collaboration Center (AIRCC) (provided by DOAJ)
Bronbestand: Elektronische Wetenschappelijke Tijdschriften
 
 

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