Architecture and evaluation of an unplanned 802.11b mesh network

Bicket, John; Aguayo, Daniel; Biswas, S.; Morris, Robert

doi:10.1145/1080829.1080833

Cited by 569 publications

(487 citation statements)

References 20 publications

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“…For all experiments, we set the TCP packet size to 1,460 bytes and the TCP receiver's advertised window to 64 packets. Consistent with previous work ( [2], [9]), the RTS/CTS handshake is disabled, since it rather degrades TCP goodput due to the increased link layer overhead. We set the IEEE 802.11 data rate to 11 Mbit/s and the attenuation level of the variable attenuators to 16dB, unless otherwise stated.…”

Section: The Map Pacing Ratesupporting

confidence: 77%

“…Random node topologies are typically found in community mesh networks such as [2] and are widely deployed in reality. We evaluate MAP and TCP NewReno in such topologies by considering random placements of the testbed's 20 antenna-stations.…”

Section: Random Topologymentioning

confidence: 99%

“…[2], [9], [13]) have been within the focus of research in the networking community. Wireless mesh networks typically aim to provide cost-efficient Internet access with minimal infrastructure expenditure, which makes it particularly attractive for suburban areas with little or no broadband availability.…”

Section: Introductionmentioning

confidence: 99%

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Practical Rate-Based Congestion Control for Wireless Mesh Networks

ElRakabawy

Lindemann

2009

Kommunikation in Verteilten Systemen (KiVS)

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Abstract.We introduce an adaptive pacing scheme to overcome the drawbacks of TCP in wireless mesh networks with Internet connectivity. The pacing scheme is implemented at the wireless TCP sender as well as at the mesh gateway, and reacts according to the direction of TCP flows running across the wireless network and the Internet. TCP packets are transmitted rate-based within the TCP congestion window according to the current out-of-interference delay and the coefficient of variation of recently measured round-trip times. Opposed to the majority of previous work which builds on simulations, we implement a Linux prototype of our approach and evaluate its feasibility in a real 20-node mesh testbed. In an experimental performance study, we compare the goodput and fairness of our approach against the widely deployed TCP NewReno. Experiments show that our approach, which we denote as Mesh Adaptive Pacing (MAP), can achieve up to 150% more goodput than TCP NewReno and significantly improves fairness between competing flows. MAP is incrementally deployable since it is TCPcompatible, does not require cross-layer information from intermediate nodes along the path, and requires no modifications in the wired domain.

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Section: The Map Pacing Ratesupporting

confidence: 77%

Section: Random Topologymentioning

confidence: 99%

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Practical Rate-Based Congestion Control for Wireless Mesh Networks

ElRakabawy

Lindemann

2009

Kommunikation in Verteilten Systemen (KiVS)

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“…One of them is a wireless IEEE 802.11 interface operating in ad hoc mode. The wireless subnet can be considered as an independent network running AODV [15] or other routing protocols adopting ETX [7] or ETT [6] as its own routing protocol. Fig.…”

Section: Considered Network Classmentioning

confidence: 99%

“…For wireless mesh networks, novel routing metrics like the expected transmission count (ETX) [7] and the expected transmission time (ETT) [6] have been proposed. These routing protocols can achieve a higher capacity in wireless mesh networks due to finding higher quality routes than routing protocols like AODV.…”

Section: Considered Network Classmentioning

confidence: 99%

TCP with gateway adaptive pacing for multihop wireless networks with Internet connectivity

2008

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This paper introduces an effective congestion control pacing scheme for TCP over multihop wireless networks with Internet connectivity. The pacing scheme is implemented at the wireless TCP sender as well as at the Internet gateway, and reacts according to the direction of TCP flows running across the wireless network and the Internet. Moreover, we analyze the causes for the unfairness of oncoming TCP flows and propose a scheme to throttle aggressive wired-to-wireless TCP flows at the Internet gateway to achieve nearly optimal fairness. The proposed scheme, which we denote as TCP with Gateway Adaptive Pacing (TCP-GAP), does not impose any control traffic overhead for achieving fairness among active TCP flows and can be incrementally deployed since it does not require any modifications of TCP in the wired part of the network. In an extensive set of experiments using ns-2 we show that TCP-GAP is highly responsive to varying traffic conditions, provides nearly optimal fairness in all scenarios and achieves up to 42% more goodput for FTP-like traffic as well as up to 70% more goodput for HTTP-like traffic than TCP NewReno. We also investigate the sensitivity of the considered TCP variants to different bandwidths of the wired and wireless links with respect to both aggregate goodput and fairness.

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Effect of Interference on Routing in Multihop Wireless Networks

Boukerche

2008

Algorithms and Protocols for Wireless and Mobile Ad Hoc Networks

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Architecture and evaluation of an unplanned 802.11b mesh network

Cited by 569 publications

References 20 publications

Practical Rate-Based Congestion Control for Wireless Mesh Networks

Practical Rate-Based Congestion Control for Wireless Mesh Networks

TCP with gateway adaptive pacing for multihop wireless networks with Internet connectivity

Effect of Interference on Routing in Multihop Wireless Networks

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