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The Interaction Between TCP Reordering Mechanisms and Multi-path Forwarding in Wireless Mesh Networks
Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för datavetenskap. (Datavetenskap)ORCID-id: 0000-0002-4366-6625
Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för datavetenskap. (Datavetenskap)ORCID-id: 0000-0002-8731-2482
Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för datavetenskap. (Datavetenskap)ORCID-id: 0000-0001-7311-9334
Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för datavetenskap. (Datavetenskap)ORCID-id: 0000-0002-9446-8143
Vise andre og tillknytning
2012 (engelsk)Inngår i: 2012 IEEE 8th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), IEEE Press, 2012, s. 276-283Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Routing packets over multiple disjoint paths towards a destination can increase network utilization by load-balancing the traffic over the network. In wireless mesh networks, multi-radio multi-channel nodes are often used to create a larger set of interference-free paths thus increasing the chance of load-balancing. The drawback of load-balancing is that different paths might have different delay properties, causing packets to be reordered. This can reduce TCP performance significantly, as reordering is interpreted as a sign of congestion. Packet reordering can be avoided by letting the network layer forward traffic strictly on flow-level. This would avoid the negative drawbacks of packet reordering, but will also limit the ability to achieve optimal network throughput. On the other hand, there are several proposals that try to mitigate the effects of reordering at the transport layer. In this paper, we perform an in-depth evaluation of such TCP reordering mitigations in multi-radio multi-channel wireless mesh networks when using multi-path forwarding. We evaluate two TCP reordering mitigation techniques implemented in the Linux kernel. The transport layer mitigations are compared using different multi-path forwarding strategies. Our findings show that, in general, flow-level forwarding gives the best TCP performance and that transport layer reordering mitigations only marginally can improve performance

sted, utgiver, år, opplag, sider
IEEE Press, 2012. s. 276-283
Emneord [en]
TCP, reordering, Wireless Mesh Networks, Multi-channel, Multi-radio, Multi-path
HSV kategori
Forskningsprogram
Datavetenskap
Identifikatorer
URN: urn:nbn:se:kau:diva-14503DOI: 10.1109/WiMOB.2012.6379088ISBN: 978-1-4673-1429-9 (tryckt)OAI: oai:DiVA.org:kau-14503DiVA, id: diva2:544525
Konferanse
The 8th IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2012), October 2012, Barcelona, Spain
Merknad

Kommande

Tilgjengelig fra: 2012-08-15 Laget: 2012-08-15 Sist oppdatert: 2018-07-23bibliografisk kontrollert
Inngår i avhandling
1. Transport-Layer Performance in Wireless Multi-Hop Networks
Åpne denne publikasjonen i ny fane eller vindu >>Transport-Layer Performance in Wireless Multi-Hop Networks
2013 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Wireless communication has seen a tremendous growth in the last decades. Continuing on this trend, wireless multi-hop networks  are nowadays used or planned for use in a multitude of contexts, spanning from Internet access at home to emergency situations.

The Transmission Control Protocol (TCP) provides reliable and ordered delivery of a data and is used by major Internet applications such as web browsers, email clients and file transfer programs. TCP traffic is also the dominating traffic type on the Internet. However, TCP performs less than optimal in wireless multi-hop networks due to packet reordering, low link capacity, packet loss and variable delay.

In this thesis, we develop novel proposals for enhancing the network and transport layer to improve TCP performance in wireless multi-hop networks. As initial studies, we experimentally evaluate the performance of different TCP variants, with and without mobile nodes. We further evaluate the impact of multi-path routing on TCP performance and propose packet aggregation combined with aggregation aware multi-path forwarding as a means to better utilize the available bandwidth. The last contribution is a novel extension to multi-path TCP to  enable single-homed hosts to fully utilize the network capacity.

sted, utgiver, år, opplag, sider
Karlstad: Karlstads universitet, 2013. s. 71
Serie
Karlstad University Studies, ISSN 1403-8099 ; 2013:1
Emneord
TCP, MPTCP, transport protocols, packet aggregation, multi-path routing, reordering, wireless multi-hop networks, tactical MANET, mobile ad hoc networks, wireless mesh networks
HSV kategori
Forskningsprogram
Datavetenskap
Identifikatorer
urn:nbn:se:kau:diva-15603 (URN)978-91-7063-473-4 (ISBN)
Disputas
2013-03-04, 1B 364, Fröding, Karlstads Universitet, Karlstad, 10:15 (engelsk)
Opponent
Veileder
Merknad

Opponent changed. Prof. C. Lindeman from the University of Leipzig was substituted by Prof. Zhang.

Tilgjengelig fra: 2013-02-08 Laget: 2012-11-14 Sist oppdatert: 2018-07-23bibliografisk kontrollert

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