DIMSUMnet Scalable Spectrum Server

Description:

The DIMSUMnet spectrum server is a scalable implementation of the spectrum server implemented using Java 1.6 SDK and the OpenMap. Currently, it runs on a Dell Poweredge 2950 server with 2 quad-core CPUs and 8 GB memory. The implementation supports multiple virtual brokers or a single broker on a single machine. Each (virtual) broker can be designated to handle a single geo-graphically contiguous area or multiple non-overlapping areas. The broker implements a spectrum leasing protocol and supports connections from Radio Access Network Managers (RANMANs). Each RANMAN connects to the broker over a TCP connection. The leasing protocol implements the basic command set: (Register-RANMAN, Authenticate-RANMAN, Register-BS, -Alloc-Demand, Interrupt-Demand)

Design Documents:

A detailed design document in PPT presentation is available here.

Documentation:

A Javadoc for the DSABroker classes and UML file for class hierarchy will be available soon.

Screenshots:
Here are as few screen shots of the GUI front-end.

Screen shot of Broker GUI showing various map components and basic modes
Screen shot of Broker GUI showing Single Region Broker, Real base station data from FCC database and conflict graph data structure used for spectrum allocation
Screen shot of Broker GUI showing Multiple Virtual Brokers each managing one region running no the same hardware platform.
Software architecture for the broker implementation