Achievable bandwidth estimation for stations in multi-rate IEEE 802.11 WLAN cells

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To access the full text documents, please follow this link: http://hdl.handle.net/2117/1233

dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria Telemàtica
dc.contributor	Universitat Politècnica de Catalunya. WNG - Grup de xarxes sense fils
dc.contributor.author	García Villegas, Eduard
dc.contributor.author	Viamonte Solé, David
dc.contributor.author	Vidal Ferré, Rafael
dc.contributor.author	Paradells Aspas, Josep
dc.date	2007-04-16
dc.identifier.uri	http://hdl.handle.net/2117/1233
dc.language.iso	eng
dc.relation	8th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks
dc.rights	Attribution-NonCommercial-NoDerivs 2.5 Spain
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/2.5/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors::Xarxes d'àrea local
dc.subject	Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors::Serveis telemàtics i de comunicació multimèdia
dc.subject	Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica
dc.subject	Local area networks (Computer networks)
dc.subject	Multimedia communications
dc.subject	Computer network protocols
dc.subject	Mobile communication systems
dc.subject	WLAN
dc.subject	802.11
dc.subject	Multimedia
dc.subject	Radio resource management
dc.subject	Xarxes d'àrea local sense fil
dc.subject	Comunicacions multimèdia
dc.subject	Comunicacions mòbils, Sistemes de
dc.title	Achievable bandwidth estimation for stations in multi-rate IEEE 802.11 WLAN cells
dc.type	info:eu-repo/semantics/conferenceObject
dc.description.abstract	This paper analyzes the effect of multi-rate transmissions in a CSMA wireless LAN environment. Observations in a real testbed showed that bandwidth resources (in Bytes/s) are shared fairly among all stations even though transmissions carried out at lower rates capture the medium for longer periods, which drastically reduces the overall throughput. The intrinsic concept of fairness in a CSMA scheme with multiple rates is quantified by means of a new formulation which is validated through simulations and practical measurements. The algorithm presented provides the maximum achievable bandwidth that can be offered to a given IEEE 802.11 station. Having this information has evident applications in realtime multimedia transmissions over WLANs. The algorithm was also run in commercial APs as a proof of concept, after analyzing its implementation issues.

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