Mobile

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Data Broadcasting
Data Replication
Security
Transaction Management

There are two typical mobile computing architectures.  In the General Mobile Computing Architecture, there is a fixed Mobile Support Station (MSS) that supports all mobile hosts (MHs) roaming within its cell.  When an MH moves out of a cell and enters a new cell, it can no longer communicate with the previous cell's MSS, and is under the control of the new cell's MSS.  All MSSs communicate with each other via a fixed network.  Our research focuses on the areas of security and transaction management in this environment.

In the second architecture, called Mobile Ad-hoc NETwork (MANET) Architecture, all MHs are roaming and the network that interconnects these MHs is a wireless network with a frequently changing topology, and there are no fixed infrastructure and fixed MSSs.  MANET architecture is widely used in battlefields and in disaster recovery situations where it is difficult or not feasible to depend on a static wired communication infrastructure.  Our current research in this area focuses on data broadcasting, data replication, and transaction management.  Our work in mobile databases has been funded in part by the National Science Foundation. Click here to learn more about this project.

 

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