000140604 001__ 140604
000140604 005__ 20190316234611.0
000140604 037__ $$aCONF
000140604 245__ $$aEZ-Flow: Removing Turbulence in IEEE 802.11 Wireless Mesh Networks without Message Passing
000140604 260__ $$c2009
000140604 269__ $$a2009
000140604 336__ $$aConference Papers
000140604 520__ $$aRecent analytical and experimental work demonstrate that IEEE 802.11-based wireless mesh networks are prone to turbulence. Manifestations of such turbulence take the form of large buffer build-up at relay nodes, end-to-end delay fluctuations, and traffic congestion. In this paper, we propose and evaluate a novel, distributed flow-control mechanism to address this problem, called EZ-flow. EZ-flow is fully compatible with the IEEE 802.11 standard (i.e., it does not modify headers in packets), can be implemented using off-the-shelf hardware, and does not entail any communication overhead. EZ-flow operates by adapting the minimum congestion window parameter at each relay node, based on an estimation of the buffer occupancy at its successor node in the mesh. We show how such an estimation can be conducted passively by taking advantage of the broadcast nature of the wireless channel. Real experiments, run on a 9-node testbed deployed over 4 different buildings, show that EZ-flow effectively smoothes traffic and improves delay, throughput, and fairness performance. We further corroborate these results with a mathematical stability analysis and extensive ns-2 simulations run for different traffic workloads and network topologies.
000140604 6531_ $$aNCCR-MICS
000140604 6531_ $$aNCCR-MICS/ESDM
000140604 6531_ $$aMedium Access Control
000140604 6531_ $$aWireless Mesh Networks
000140604 700__ $$0242765$$aAziz, Adel$$g149125
000140604 700__ $$aStarobinski, David
000140604 700__ $$0240373$$aThiran, Patrick$$g103925
000140604 700__ $$0241107$$aEl Fawal, Alaeddine$$g162955
000140604 7112_ $$aACM CoNEXT 2009$$cRome$$dDecember 1-4, 2009
000140604 773__ $$tACM CoNEXT'09
000140604 8564_ $$zURL
000140604 8564_ $$s1541754$$uhttps://infoscience.epfl.ch/record/140604/files/conext20-aziz.pdf$$zn/a
000140604 909C0 $$0252614$$pLCA$$xUS00024
000140604 909C0 $$0252453$$pLCA2$$xU10427
000140604 909C0 $$0252454$$pLCA3$$xU10431
000140604 909CO $$ooai:infoscience.tind.io:140604$$pconf$$pIC$$qGLOBAL_SET
000140604 917Z8 $$x103925
000140604 917Z8 $$x103925
000140604 937__ $$aLCA-CONF-2009-019
000140604 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000140604 980__ $$aCONF