000164592 001__ 164592
000164592 005__ 20190316235052.0
000164592 037__ $$aCONF
000164592 245__ $$aModels of 802.11 Multi-Hop Networks: Theoretical Insights and Experimental Validation
000164592 269__ $$a2011
000164592 260__ $$c2011
000164592 336__ $$aConference Papers
000164592 520__ $$aWireless Multi-Hop CSMA/CA Networks are challenging to analyze. On the one hand, their dynamics are complex and rather subtle effects may severely affect their performance. Yet, understanding these effects is critical to operate upper layer protocols, such as TCP/IP. On the other hand, their models tend to be very complex in order to reproduce all the features of the protocol. As a result, they do not convey much insight into the essential features. We review two models of 802.11 protocols, which are simple enough to first explain why a trade-off needs to be found between fairness and spatial reuse (throughput) in saturated wireless networks (where all nodes have packets to transmit to their neighbors); and then to explain why non-saturated networks (where only some nodes, the sources, have packets to transmit to their destinations in a multi-hop fashion) that are more than 3 hops longs suffer from instability. We confront both models either to realistic simulations in ns-2 or to experiments with a testbed deployed at EPFL. We find that the predictions of both models help us understand the performance of the 802.11 protocol, and provide hints about the changes that need to be brought to the protocol.
000164592 700__ $$0242765$$g149125$$aAziz, Adel
000164592 700__ $$0241785$$g114242$$aDurvy, Mathilde
000164592 700__ $$aDousse, Olivier
000164592 700__ $$0240373$$g103925$$aThiran, Patrick
000164592 7112_ $$dJanuary 4-8, 2011$$cBangalore, India$$aCOMSNETS 2011
000164592 773__ $$tProc. IEEE COMSNETS 2011
000164592 8564_ $$uhttp://www.comsnets.org/archive/2011/technical_program.html$$zURL
000164592 8564_ $$uhttps://infoscience.epfl.ch/record/164592/files/AzizDDT11.pdf$$zn/a$$s324570$$yPublisher's version
000164592 909C0 $$xUS00024$$0252614$$pLCA
000164592 909C0 $$pLCA3$$xU10431$$0252454
000164592 909CO $$qGLOBAL_SET$$pconf$$pIC$$ooai:infoscience.tind.io:164592
000164592 917Z8 $$x103925
000164592 937__ $$aEPFL-CONF-164592
000164592 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000164592 980__ $$aCONF