Design of Locomotive Wireless Communication Access Congestion Control System Based on Fuzzy Logic
Locomotive wireless communication is mainly used for data transmission between trains and control centers.If there is a congestion in communication network,it will cause information transmission delay or failture,which will affect the operation safety of train.In order to improve the smoothness of locomotive wireless communication access,a fuzzy logic based congestion control sys-tem for locomotive wireless communication access is designed.The data packet is analyzed through the data analysis and classification module,and the WRED module completes the packet loss processing,which is then transmitted to the queue module.The data is or-ganized and transmitted to the fuzzy logic controller module.In the fuzzy logic controller module,fuzzy control rules are designed by using fuzzy logic theory,and the hardware design of the system is completed based on hop by hop congestion control.In the software design of the system,according to the cache of the wireless communication access data in the queue module,the state of the wireless communication access node is sensed,and the congestion of the wireless communication access path is predicted by obtaining the re-maining queue of the wireless communication access node.Under the optimal path of wireless communication access,a congestion con-trol algorithm is designed to achieve the congestion control of the locomotive wireless communication access.The test results show that the designed system can achieve a throughput of 4 000 kpbs,the packet loss rate and node mortality rate are both below 1％,and it can effectively control congestion in wireless communication access.
fuzzy logicwireless communicationstate perceptionlocomotivecongestion control
万方数据
维普
