Cross-Layer Scheduling with QoS Support over a Distributed Queuing MAC for Wireless LANs

Distributed Queuing Collision Avoidance (DQCA) is an efficient MAC protocol designed for infrastructure Wireless LANs. In this paper, four algorithms are proposed that alter the FIFO scheduling order of DQCA in order to meet specific network requirements. The proposed schemes combine the efficiency...

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Published in:Mobile networks and applications 2009-12, Vol.14 (6), p.709-724
Main Authors: Kartsakli, E., Alonso-Zárate, J., Alonso, L., Verikoukis, C.
Format: Article
Language:English
Subjects:
Access control
Adaptation
Algorithms
Communications Engineering
Computer Communication Networks
Efficiency
Electrical Engineering
Engineering
IT in Business
Networks
Protocol
Quality of service
Queuing
Scheduling
Simulation
Studies
Traffic
Transmitters
Wireless networks
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cited_by cdi_FETCH-LOGICAL-c315t-ca9b335236f93655fb3a54f7a0746cd45d6807c4aeee28d14220ad2127de0ca83
cites cdi_FETCH-LOGICAL-c315t-ca9b335236f93655fb3a54f7a0746cd45d6807c4aeee28d14220ad2127de0ca83
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container_issue 6
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container_title Mobile networks and applications
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creator Kartsakli, E.
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description Distributed Queuing Collision Avoidance (DQCA) is an efficient MAC protocol designed for infrastructure Wireless LANs. In this paper, four algorithms are proposed that alter the FIFO scheduling order of DQCA in order to meet specific network requirements. The proposed schemes combine the efficiency of opportunistic scheduling with the QoS provisioning through service differentiation. The opportunistic policy encourages transmissions at higher rates when the channel condition is good and is implemented through a cross-layer dialogue between the PHY and the MAC layers. The key idea of service differentiation is to assign priorities to traffic flows with different requirements in order to provide QoS guarantees. The throughput, delay and jitter performance of the proposed schemes has been evaluated through simulations for a scenario with heterogeneous traffic of voice, video, best-effort and background data traffic flows.
doi_str_mv 10.1007/s11036-008-0128-3
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subjects Access control
Adaptation
Algorithms
Communications Engineering
Computer Communication Networks
Efficiency
Electrical Engineering
Engineering
IT in Business
Networks
Protocol
Quality of service
Queuing
Scheduling
Simulation
Studies
Traffic
Transmitters
Wireless networks
title Cross-Layer Scheduling with QoS Support over a Distributed Queuing MAC for Wireless LANs
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