With unsigned messages, the result that no solution can exist with fewer than $3m+1$ generals if there are $m$ traitors present in a fully connected graph is proven.
Overview of the problem reliable communication in distributed systems. In Advances in Ultra-Dependable Distributed Systems. With faulty sensors, decision diffusion's performance degrades at a lesser rate.Īn overview of WSNs, good summary of cluster model of sensor networks, directed diffusion, security, power usage, and location systems. Simulation shows that value diffusion is superior when the sensor network is highly reliable and fault free. In decision diffusion each sensor compares its own value to a threshold, and distributes a boolean, thus all sensors simply take a majority vote. In value diffusion each sensor distributes its measured value, and each sensor then makes a decision based on the average of all the received values. Value-Fusion Versus Decision-Fusion for Fault-tolerance in Collaborative Target Detection in Sensor Networks.Ĭomparison between two methods of collaborative decision making in sensor networks. If the desired accuracy is achieved prior to the MA having visited all the nodes in its itinerary it may return to base, saving energy in transmission and processing. The mobile agent carries with it this partially aggregated data, to the next node, where the answer becomes more accurate. This is done at progressively finer resolution (as much as is demanded by the original query) to obtain an answer. should be giving the same readings) and picks the peak that is both the highest and the widest in the graph. Uses a Multi-Resolution Integration algorithm, which analyses the overlap function of data from sensors that are in a cluster (i.e.
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Information Fusion.ĭescribes how to perform sensor data processing by passing mobile agent code between sensors, rather than large quantities of data back to a central processing point. Multisensor Data Fusion in Distributed Sensor Networks Using Mobile Agents.
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