18-07-2012, 02:47 PM
Mobile Database Systems
Mobile Database Systems.ppt (Size: 2.18 MB / Downloads: 463)
Outline
Fully Connected Information Space
Personal Communication System (PCS)
Mobile Database Systems (MDS)
Transaction Management
Data Caching
Query Processing
Data Classification
Conclusion
Mobile Database Systems
A system with the following structural and functional properties
Distributed system with mobile connectivity
Full database system capability
Complete spatial mobility
Built on PCS/GSM platform
Wireless and wired communication capability
Mobile Database Systems
A node in which only the client can establish communication whenever needed with the server but the server cannot do so.
Personal Communication System (PCS)
Architecture
Wireless communication
Bandwidth limitations
Frequency reuse
Personal Communication System (PCS)
A system where wired and wireless networks are integrated for establishing communication.
Personal Communication System (PCS)
Mobile cells
The entire coverage area is a group of a number of cells. The size of cell depends upon the power of the base stations.
Personal Communication System (PCS)
Handoff
To keep the conversation going, the Handoff procedure should be completed while the MS (the bus) is in the overlap region.