交通网络控制防冲突算法研究与仿真

Research and Simulation of Traffic Network Control Anti-Collision Algorithm

研究非均匀无线交通网络控制中的防冲突问题,降低链路冲突率。由于非均匀无线交通控制网络传感器分布的不均匀特性使得传感器节点在事件易发区域部署较密集,当事件发生同时触发多个节点时,存在网络的节点链路占有率较低,传统的防冲突算法仅通过路由算法避免单一冲突的发生,不能有效解决多触发存在的节点链路占有率低的问题,造成链路冲突率较高。为解决上述问题,提出了节点分簇的非均匀无线交通控制网络链路防冲突算法。通过能量评估模型将易同时触发的节点分为一簇,据能量最大原则选取一个簇中心节点,事件发生触发多个节点时,数据不是随机传输而是汇集到簇中心节点中完成最终的传输。仿真结果表明,改进方法能够避免单一路由算法不能提高节点链路占有率的问题,有效降低链路冲突率。

Research the anti-collision of non-uniform wireless traffic control network to reduce the link conflict rate.Because of the uniform distribution of wireless network sensor uniform characteristic,the sensor nodes in the event are prone to deploy more densely populated areas.When the events trigger multiple nodes,the low rates of node share and links exist.In order to solve this problem,this paper put forward an anti-collision algorithm of uniform wireless traffic control network link based on the nodes clustering.Through the energy evaluation model,the nodes which are prone to be triggered simultaneously fall to the same cluster.A cluster center node was selected according to the maximum principle of energy.When event triggers multiple nodes,the data are not random transmitted but packed into the cluster center node for the final transmission.Simulation results show that this method can effectively reduce the link conflict rate.