Friday, February 3, 2012

Paper Reading #2: Bluetooth Scatternet Using an Ad Hoc Bridge Node Routing Protocol for Outdoor Distance Education

Chang, Y., Lin, M., Chao, H., and Chen, J. "Bluetooth Scatternet Using an Ad Hoc Bridge Node Routing Protocol for Outdoor Distance Education". International Journal of Distance Education Technologies. Jul-Sep2004, Vol. 2 Issue 3, p36-46.

The authors toy with bluetooth scatternets in order to achieve a greater learning environment for students that are not in the classroom.  They propose a new routing protocol for bluetooth scatternets that increase scatternet performance.

They focus on the idea of distance eduaction - simply education outside of a classroom setting.  This is becoming more and more common as groups seek to get real hands-on experience in different settings.  Access to materials is sometimes limited in the field as compared to in a classroom, so the authors seek to increase the availability of resources in the field.  They do this by using bluetooth scatternets (a specific type of MANET) to connect students with each other and resources needed to complete a task.

In order to speed up the transmission of data over the scatternet, the introduce a Bridge Node Routing Protocol (BNRP).  This protocol uses bridge nodes to track keep the routing protocol maintained but does not send periodic query packets wasting bandwidth.

For testing they simulated a regular bluetooth scatternet against their BNRP.  They simulated it on 8 and 16 bluetooth nodes.  They found that BNRP shortens the time between transmission between two master devices in different piconets.  They conclude that the BNRP gets better performance than regular scatternets and MANETS.

This relates to our project because our mesh network will be using the bluetooth piconets and scatternets.  It is interesting to see how these mesh networks can achieve higher throughput by using different routing protocols.

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