CAJ | 학술논문

为了改善现有车路通信方式覆盖范围小、交付时延大和传输速率低的现状，将TD-LTE技术引入车路通信接入系统。提出了基于TD-LTE的车路通信接入系统无线资源调度模型；构建了车路通信仿真场景，对比例公平算法、指数比例公平算法和改进的最大权重时延优先算法进行性能分析。仿真结果表明：车辆低速移动场景下，系统负载较低时指数比例公平算法性能较好，系统负载较高时改进的最大权重时延优先算法表现更优，比例公平算法不适合车路通信多媒体业务流调度；车辆高速移动场景下，三者都不适合车路通信多媒体业务流调度。
위료개선현유차로통신방식복개범위소、교부시연대화전수속솔저적현상，장TD-LTE기술인입차로통신접입계통。제출료기우TD-LTE적차로통신접입계통무선자원조도모형；구건료차로통신방진장경，대비례공평산법、지수비례공평산법화개진적최대권중시연우선산법진행성능분석。방진결과표명：차량저속이동장경하，계통부재교저시지수비례공평산법성능교호，계통부재교고시개진적최대권중시연우선산법표현경우，비례공평산법불괄합차로통신다매체업무류조도；차량고속이동장경하，삼자도불괄합차로통신다매체업무류조도。
To improve the existing V2I communication mode with small-scale coverage,long delivery latency and low trans-mission rate,TD-LTE technology was introduced into V2I communication access system. A radio resource scheduling model based on TD-LTE is proposed for V2I communication access system. Three typical resource scheduling algorithms of PF,EXP and M-LWDF were tested and contrasted in different vehicle mobile simulation scenarios. Simulation results show that in slow moving scenario,when the system load is low,EXP algorithm can provide better performance;M-LWDF algorithm can perform better as load is enhenced;PF algorithm is not suitable for multi-media resource scheduling. In high moving scenario,all the three algorithms are not suitable.