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Abstract
Abstract Multi-path routing, a routing technique that enables data transmission over multiple paths, is an effective strategy in achieving reliability in wireless sensor networks. However, multi-path routing does not guarantee deterministic transmission. This is because more than one path is available for transferring data from the source node to the destination node. A hybrid multi-path routing algorithm is proposed for industrial wireless mesh networks for improving reliability and determinacy of data transmission, as well as to effectively deal with link failures. The proposed algorithm adopts the enhanced Dijkstra’s algorithm for searching the shortest route from the gateway to each end node for first route setup. A virtual pheromone distinct from the regular pheromone is introduced to realize pheromone diffusion and updating. In this way, multiple routes are searched based on the ant colony optimization algorithm. The routes used for data transmission are selected based on their regular pheromone values, facilitating the delivery of data through better routes. Link failures are then handled using route maintenance mechanism. Simulation results demonstrate that the proposed algorithm outperforms traditional algorithms in terms of average end-to-end delay, packet delivery ratio, and routing overhead; moreover, it has a strong capacity to cope with topological changes, thereby making it more suitable for industrial wireless mesh networks.
Highlights
In recent years, wireless technology has gained great interest in industrial applications
Missing or delaying the process data may severely degrade the quality of control; at least two paths should be available from source to destination nodes in the wireless sensor networks (WSNs)
(1)End-to-end delay: this refers to cumulative statistical measure of the delays taken by packets traveling from their source nodes to their destination nodes
Summary
Wireless technology has gained great interest in industrial applications. Missing or delaying the process data may severely degrade the quality of control; at least two paths should be available from source to destination nodes in the wireless sensor networks (WSNs). WirelessHART is a well-known wireless mesh communication standard that is designed for process measurement and control applications. It requires multi-path routing algorithms to provide reliable and deterministic communication. The energy conservation in industrial wireless mesh networks is achieved by the time division multiple access scheduling algorithm. A hybrid multi-path routing algorithm called DAWMNet is proposed for industrial wireless mesh networks, which combines Dijkstra’s algorithm and the ant colony optimization (ACO) algorithm.
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