Due to their self-configuration and auto-configuration properties, Wireless Mesh Networks (WMNs) are expected to support a plethora of applications, including traditional Internet services and novel multimedia applications. Service differentiation is needed to support applications with different Quality of Service (QoS) requirements. In this paper, we propose a novel cross-layer framework that provides efficient communication and service differentiation in multi-radio multichannel WMNs. The proposed solution includes a distributed channel allocation scheme, integrated in the routing protocol, and a multi-channel MAC protocol, inspired to the IEEE 802.11e EDCA (Enhanced Distributed Channel Access). At the MAC layer, we propose “fast-forwarding” mechanisms to reduce the contention delay of delay-sensitive applications in multi-hop topologies. At the network layer, the channel allocation scheme aims at loading channels with an equal number of per-class traffic flows. The simulation results confirm the effectiveness of the proposed scheme in providing differentiated treatment to traffic classes with different QoS requirements.

A Cross-Layer Architecture for Service Differentiation in Multi-Channel Multi-Radio Wireless Mesh Networks

BONONI, LUCIANO;DI FELICE, MARCO;
2009

Abstract

Due to their self-configuration and auto-configuration properties, Wireless Mesh Networks (WMNs) are expected to support a plethora of applications, including traditional Internet services and novel multimedia applications. Service differentiation is needed to support applications with different Quality of Service (QoS) requirements. In this paper, we propose a novel cross-layer framework that provides efficient communication and service differentiation in multi-radio multichannel WMNs. The proposed solution includes a distributed channel allocation scheme, integrated in the routing protocol, and a multi-channel MAC protocol, inspired to the IEEE 802.11e EDCA (Enhanced Distributed Channel Access). At the MAC layer, we propose “fast-forwarding” mechanisms to reduce the contention delay of delay-sensitive applications in multi-hop topologies. At the network layer, the channel allocation scheme aims at loading channels with an equal number of per-class traffic flows. The simulation results confirm the effectiveness of the proposed scheme in providing differentiated treatment to traffic classes with different QoS requirements.
Proceedings of the 2009 6th International Symposium on Wireless Communication Systems (ISWCS 2009)
171
175
Bononi L.; Di Felice M.; Molinaro A.; Pizzi S.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/78200
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