Abstract
We propose a new access scheme for efficient support of multimedia services in OFDM wireless networks, both in the uplink and in the downlink. This scheme further increases the benefits of opportunistic scheduling by extending this cross-layer technique to higher layers. Access to the medium is granted based on a system of weights that dynamically accounts for both the experienced QoS and the transmission conditions. This new approach enables the full support of multimedia services with the adequate traffic and QoS differentiation while maximizing the system capacity and keeping a special attention on fairness. Performance evaluation shows that the proposed access technique outperforms existing wireless access schemes and demonstrates that choosing between high fairness and high system throughput is no more required.
Highlights
Providing mobile multimedia transmission services with an adequate QoS is very challenging
80 Kbps 160 Kbps 80 Kbps 160 Kbps 80 Kbps 160 Kbps 80 Kbps 160 Kbps corroborate the good results of the Weighted Fair Opportunistic (WFO), we study the performance of the tested protocols in a more general context
We propose a new MAC protocol for wireless multimedia networks, called “weighted fair opportunistic (WFO)” protocol
Summary
Universite Pierre et Marie Curie (UPMC) - Paris 6, Laboratoire d’Informatique de Paris 6 (LIP6), 104 avenue du President Kennedy, 75016 Paris, France. We propose a new access scheme for efficient support of multimedia services in OFDM wireless networks, both in the uplink and in the downlink. This scheme further increases the benefits of opportunistic scheduling by extending this cross-layer technique to higher layers. Access to the medium is granted based on a system of weights that dynamically accounts for both the experienced QoS and the transmission conditions. This new approach enables the full support of multimedia services with the adequate traffic and QoS differentiation while maximizing the system capacity and keeping a special attention on fairness. Performance evaluation shows that the proposed access technique outperforms existing wireless access schemes and demonstrates that choosing between high fairness and high system throughput is no more required
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More From: EURASIP Journal on Wireless Communications and Networking
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