Latency Aware Anypath Routing and Channel Scheduling for Multi-Radio Wireless Mesh Networks
2014 (English)In: IEEE WCNC'14 Track 3 (Mobile and Wireless Networks), IEEE conference proceedings, 2014Conference paper (Refereed)
Wireless mesh network (WMN), radio nodes that form a mesh topology, is an interesting architectural candidate for the future wireless Internet. A dense access network can rapidly be deployed at a reasonable cost because there is no need to wire the mesh access points. However, WMNs typically do not perform well with latency-sensitive data traffic, such as Voice over IP (VoIP), due to restricted bandwidth. In this paper, we present the design, implementation and evaluation of LA-APOLSR for hybrid WMNs, where mesh nodes have two radios; a fixed radio for receiving and a switchable radio which rapidly changes channels to send to neighbor nodes. The key novelty of our approach is to use anypath routing for latency-sensitive traffic while normal traffic is treated using single path routing. Also, we develop a novel queuing strategy which prioritizes latency-sensitive traffic. A detailed evaluation using KAUMesh, an in-house multi-radio wireless mesh testbed, shows a reduction in latency and packet loss for VoIP traffic without negatively impacting competing TCP background traffic.
Place, publisher, year, edition, pages
IEEE conference proceedings, 2014.
Research subject Computer Science
IdentifiersURN: urn:nbn:se:kau:diva-29965DOI: 10.1109/WCNC.2014.6952775ISBN: 978-1-4799-3083-8OAI: oai:DiVA.org:kau-29965DiVA: diva2:662310
Wireless Communications and Networking Conference (WCNC), 6-9 April 2014, Istanbul