Engineers have developed a data processing algorithm called WiSwarm, which can be configured on any wireless network for
WiSwarm runs on a centralizedcomputer and connect to any wireless network to manage multiple data streams and prioritize the most recent data. Instead of trying to sequentially receive data packets from each source (robot or drone) at each point in time, the algorithm determines which source in the network should send data next. The system uses a “last in, first out” principle to send the latest data over the wireless network to the CPU.
The algorithm determines which source shouldtransmit data to the next, evaluating three parameters: the priority of the source (for example, information from a drone that is tracking a fast vehicle should be transmitted more often than one following a slow vehicle), how much time has passed since the drone sent an update, and probability of successful data transmission.
The operation of the WiSwarm algorithm. Video: MIT AERA
In times of natural disasters, operationalobtaining information is often critical for finding survivors and starting rescue operations, the authors of the development explain. But when several robots simultaneously transmit time-critical information wirelessly, data jams can occur. Any information received quickly becomes outdated to be considered a useful real-time report.
The new technology is suitable for customizing conventionalWi-Fi router. In a series of experiments, the engineers showed that the adapted network can act as an efficient traffic controller, able to prioritize and transmit the latest data so that multiple drones can work together.
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