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SUMMARY:Using Fair DHTs for Location Aware Service Discovery - Carmen Guer
 rero (University of Madrid)
DTSTART:20081113T160000Z
DTEND:20081113T170000Z
UID:TALK13712@talks.cam.ac.uk
CONTACT:Eiko Yoneki
DESCRIPTION:The objective of this talk it is to introduce the work at UC3M
  NETCOM research group in location aware service discovery based on fair D
 HT. We have designed a system for location aware service discovery based o
 n DHTs systems. In conjunction with UPC (Technical University of Catalonia
 ) we created and extended our previous systems an adapted it to Mobility S
 cenarios and Home Agents Discovery (fP2P-HN). The lack of route optimizati
 on in Mobile IP and NEMO considerably reduces the communications performan
 ce\, increased the delay and the infrastructure load. The solution at fP2P
 -HN allows the deploying of several Home Agents (HAs) through the Internet
 . A Mobile Node (MN) or a Mobile Network (NEMO) can select a closer HA to 
 its topological position in order to reduce the delay of the paths towards
  its peers. fP2P-HN uses a p2p network to signal the location of the diffe
 rent HAs. The main advantages of the fP2P-HN over the existing ones are th
 e scalability\, the reduction of the communication delay and the load of t
 he HAs. We have evaluated the performance of the fP2P-HN by simulation. Ou
 r results show that the fP2P-HN is scalable since the amount of signaling 
 messages per HA does not increase\, even if the number of deployed HAs inc
 reases. We also show that the average reduction of the communication's del
 ay compared to Mobile IP/NEMO is 23% (with a minimum deployment) and the r
 eduction of the load at the HA is at least 54%. \n\nBio: Carmen Guerrero r
 eceived the Telecommunication Engineering degree in 1994 from the Technica
 l University of Madrid (UPM)\, Spain\, and the Ph.D. in Computer Science i
 n 1998 from the Universidade da Coruña (UDC)\, Spain. She is currently as
 sociate professor since 2003 at Universidad Carlos III de Madrid (UC3M)\, 
 teaching computer networks courses. She has been involved in several natio
 nal and international research projects related with content distribution\
 , overlay networks\, information retrieval\, broadband access networks\, n
 etwork management and advanced network and multimedia real time systems. M
 ore details of her profile are available at: www.it.uc3m.es/carmen\nThis r
 esearch is supported by: CONTENT EU NoE (www.ist-content.eu\, BIOGRIDNET P
 roject (www.biogridnet.es)\, IMDEA Networks Research Institute (www.imdea.
 org/networks) and NETCOM Research Group at University Carlos III Madrid (w
 ww.it.uc3m.es/netcom)\n
LOCATION:SS03\, Computer Laboratory\, William Gates Builiding
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