Mobility-awareness in Managing Spatial Data

Wednesday, November 21, 2007 - 2:32pm

EGEMEN TANIN, Department of Computer Science and Software Engineering, University of Melbourne
TIME: 3:30 – 4:30 p.m.
PLACE: Computer Science Conference Room, Harold Frank Hall Room 1132


With recent advances in mobile computing technologies, many devices can now render and process spatial data easily. Users of these devices, such as visitors in a city, mixed-reality gamers, rescue officers, want near real-time retrieval of spatial data over a wireless network. Due to bandwidth and latency restrictions in mobile settings, efficient continuous retrieval of spatial objects remains to be a challenge. In this presentation, I will describe a mobility-aware approach to this problem. I will first introduce multi-resolution storage and retrieval methods for spatial data, which restrict access to only the necessary content based on a client’s motion. I will then present a mobility-aware buffer management technique as well as an efficient index using multi-resolution representations of objects. I will also visit some initial work and plans on various server side optimizations such as load balancing. Our experiments demonstrate the effectiveness of our solution to continuous retrieval of complex spatial data in mobile settings.


Egemen Tanin is a lecturer at the Department of Computer Science and Software Engineering at the University of Melbourne. He is currently on sabbatical in NEC Labs, Cupertino, CA. He has received his PhD at the University of Maryland, College Park, in 2001. Dr Tanin’s areas of research are spatial data management and distributed databases. His recent work on P2P Massively Multiplayer Online Games has attracted significant international interest and is now being commercialized by NICTA Victoria Labs, Australia. For more details regarding his previous work please check