关键词: 工业无线通信, 多跳多信道链路, 资源调度, 优化

Abstract: When wireless communication makes its way to industrial automation, the most difficult hurdle to be in coping with is harsh reliability issue. The end-to-end reliability over multi-hop wireless link depends on each sub link, and there is more challenge to achieve reliable communication. In consideration of these facts, the Industrial Multi-hop Multi-channel Wireless Link（IMMWL） is researched, and the end-to-end reliability is improved by employing optimal allocation of slots and channels. The IMMWL model is established at first. Following that, the problem is formulated to maximize the reliability over the link while a strict latency bound is imposed for packet delivery from source to destination. The optimization problem is converted into resource scheduling problem, and a greedy algorithm is designed to catch the optimal solution. The solution is based on a light-weighted algorithm and can be applied in field devices. Semi physical simulation platform is developed and the improvement of the algorithm is verified.

Key words: industrial wireless communication, multi-hop multi-channel link, resource scheduling, optimization