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SUMMARY:Exploiting the Structure of Human Mobility for Opportunistic Netwo
 rks - Theus  Hossmann (University of Cambridge)
DTSTART:20120510T150000Z
DTEND:20120510T160000Z
UID:TALK36713@talks.cam.ac.uk
CONTACT:Eiko Yoneki
DESCRIPTION:In opportunistic networks\, data is forwarded between human ca
 rried mobile devices when they are within communication range of each othe
 r (in contact). State of the art solutions to opportunistic networking pro
 blems (routing\, content placement\, etc.) often use the contact graph of 
 a mobility scenario to exploit the structure of who meets whom. In this ta
 lk\, we start by quantifying the structure of contact graphs with a comple
 x network analysis. Based on insights of this analysis\, we observe that c
 urrent mobility models fail at correctly reproducing certain aspects of hu
 man mobility\, and we present a "social overlay" model to fix this. Furthe
 r\, we propose a clustering-based algorithm with which nodes can infer the
  contact graph. Using simulation\, we show that contact graph based routin
 g protocols achieve good performance when using our algorithm\, while perf
 ormance degrades when constructing a contact graph naively.\n\nThis is wor
 k I have done during my PhD at ETH Zurich and presented at Infocom 2010\, 
 MobiHoc 2011 and Netscicom 2011.\n
LOCATION:FW26\, Computer Laboratory\, William Gates Builiding
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