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在基于IEEE802.15.4的工业无线传感器网络中,通过时分复用技术来实现节点间并行通信,以提高网络的吞吐量.通常,网络中的管理器根据全网拓扑对网络中的每个连接分配一个超帧中相应的时隙.不同的时隙分配方案中,连接在超帧中活动的顺序也不同,对网络性能的影响也不同.本文研究了不同时隙分配方案在网络吞吐量和数据延迟方面对网络的影响,定性分析了时隙分配方案与数据延迟的关系,并根据mesh结构的特点提出一种使用粒子群优化的算法,用于在网络管理器上对时隙分配进行优化,使得数据延迟最小化,以满足工业无线网络实时性应用的要求.
In IEEE802.15.4-based industrial wireless sensor networks, parallel communication between nodes is implemented by time-division multiplexing to improve the throughput of the network.Usually, the manager in the network allocates each connection in the network according to the topology of the whole network The corresponding timeslots in a superframe.In the different timeslot allocation schemes, the order of activities in the superframes is also different, and the impact on the network performance is also different.This paper studies the influence of different timeslot allocation schemes on network throughput and data Delay the impact of the network, the qualitative analysis of the relationship between the time slot allocation scheme and data delay, and according to the characteristics of mesh structure proposed an algorithm using particle swarm optimization for the network manager to optimize the time slot allocation, Minimizing data latency to meet the real-time requirements of industrial wireless networks.