A Delay-aware Packet Prioritisation Mechanism for Voice over IP in Wireless Mesh Networks

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Title: A Delay-aware Packet Prioritisation Mechanism for Voice over IP in Wireless Mesh Networks
Authors: Olariu, Cristian
Fitzpatrick, John
Ghamri-Doudane, Yacine
Murphy, Liam, B.E.
Permanent link: http://hdl.handle.net/10197/7656
Date: 6-Apr-2016
Abstract: This work proposes a novel Delay-aware Packet Prioritisation Mechanism (DPPM) to uniformly distribute the Quality of Service (QoS) level across all Voice Over IP (VoIP) calls in a Wireless Mesh Network (WMN). The method prioritises VoIP packets based on the amount of queueing delay that has been accumulated across multiple hops within the WMN. The accumulated queueing delay is piggybacked over every VoIP packet and is used at the enqueueing phase to place more delayed packets towards the head of the queue. This assures higher priority for more delayed VoIP packets over less delayed VoIP packets. The influence of the queueing delay on voice call quality is further reduced by utilising the proposed DPPM in conjunction with WiFi frame aggregation. This conjunction increases the network's VoIP call capacity, and this is validated through NS-3 simulations.
Funding Details: Enterprise Ireland
European Commission - European Regional Development Fund
Science Foundation Ireland
Type of material: Conference Publication
Publisher: IEEE
Keywords: QoS;Queueing;PIFO;VoIP
DOI: 10.1109/WCNC.2016.7564956
Language: en
Status of Item: Peer reviewed
Is part of: 2016 IEEE Wireless Communications and Networking Conference (WCNC)
Conference Details: 2016 IEEE Wireless Communications and Networking Conference (WCNC), Doha, Qatar 3-6 April 2016
Appears in Collections:Computer Science Research Collection

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