Whether it’s a drone or self-driving car, the constant exchange of information is necessary in order to avoid a collision. Not only the information needs to be quick, but also fresh. The current network can send data quickly, but can’t promise that the information is fresh. However, MIT researchers may have a solution. Considering this issue, they have developed an algorithm, which can provide freshest possible data for a simple wireless network.
“If you are exchanging congestion information, you would want that information to be as fresh as possible,” Eytan Modiano, professor of aeronautics and astronautics and a member of MIT’s Laboratory for Information and Decision Systems said in a statement. “If it’s dated, you might make the wrong decision. That’s why the age of information is important.”
The algorithm the team developed essentially calculates an “index” for each node on a given wireless network. a node’s index tracks the age, or freshness of the information, overall priority of the node, and reliability of the channel it’s communicating. The higher value the index has, the more priority will the node have while transmitting data. The index can change moment to moment for a specific node.
The research was backed by the Army Research Office (ARO) and the National Science Foundation (NSF). The researchers plan to test the algorithm on radio networks. They are also developing algorithms that can optimize the freshness of data in a more complex network.