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Communications of the ACM

ACM TechNews

Researchers Boost Efficiency of Multi-Hop Wireless Networks

example ad hoc wireless network

Credit: GlobalSpec

North Carolina State University (NCSU) researchers have developed centrality-based power control technology, which they say is a more efficient data transmission approach that can boost the amount of data networks can transmit by as much as 80 percent. "Our approach increases the average amount of data that can be transmitted within the network by at least 20 percent for networks with randomly placed nodes — and up to 80 percent if the nodes are positioned in clusters within the network," says NCSU professor Rudra Dutta.

The approach also makes the network more energy efficient, which can extend the lifetime of the network. In addition, the researchers say the approach solves the problem of hot spots — points in the network where multiple wireless transmissions can interfere with each other — that are usually associated with multi-hop wireless networks.

Dutta says the approach uses an algorithm that instructs each node in the network on how much power to use for each transmission depending on its final destination. The algorithm optimizes system efficiency by determining when a powerful transmission is worth the added signal disruption, and when less powerful transmissions are required.

From North Carolina State University
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