CAJ | 학술논문

针对列车通信采用多功能车辆总线(multifunction vehicle bus,MVB)网络传输数据的实时性要求,提出一种动态优先级时间片轮询算法。该算法根据非周期数据的优先级进行仲裁调度,通过优化算法复杂度、减小数据等待延时和阻塞延时,解决了 MVB 网络实时性的问题。并对 MVB 总线非周期数据的实时性、公平性等进行仿真分析,结果表明,该算法能提高 MVB 总线非周期数据传输的实时性与公平性,可满足列车通信网络标准 ICE61375-1对实时性的要求。
침대열차통신채용다공능차량총선(multifunction vehicle bus,MVB)망락전수수거적실시성요구,제출일충동태우선급시간편륜순산법。해산법근거비주기수거적우선급진행중재조도,통과우화산법복잡도、감소수거등대연시화조새연시,해결료 MVB 망락실시성적문제。병대 MVB 총선비주기수거적실시성、공평성등진행방진분석,결과표명,해산법능제고 MVB 총선비주기수거전수적실시성여공평성,가만족열차통신망락표준 ICE61375-1대실시성적요구。
According to the train communication network and multifunction vehicle bus network real-time transport protocols, the authors presented a dynamic priority round-Robin algorithm. Multifunction vehicle bus (MVB ) is used widely in train communication networks to realize interconnection among different devices.It must meet the real-time performance while multifunction vehicle bus is used to transmit data according to the ICE61375-1.In the multifunction vehicle bus network,the delay among transmission equipments mainly includes waiting to be sent delay and transmitting the data packet delay and so on.Based on the priority of non-periodic data to achieve arbitration scheduling,the algorithm can improve the real-time performance of multifunction vehicle bus network to transmit the non-periodic data by means of optimizing the complexity of algorithm and reducing waiting delay and blocking delay.The simulation analysis shows that the algorithm can improve the real-time performance and fairness performance of MVB transmission.At the same time, the algorithm also meets the requirements of the ICE61375-1.