车联网场景中时延受限内容传输方案

发布时间：2018-03-13 23:14

  本文选题：时延受限　切入点：调度　出处：《北京邮电大学学报》2017年03期 　论文类型：期刊论文

【摘要】：在路侧基础设施密集部署的车联网场景中,针对车载终端时延受限内容的下载需求,提出了一种调度算法.该算法基于李雅普诺夫优化方法,利用分组的等待时延建立李雅普诺夫方程,通过传输和丢包决策可以保证用户的时延需求,并保证系统稳定.仿真结果表明,相比于最早过期优先算法,提出的方法在满足用户时延需求的同时,进一步提升了系统的吞吐量.
[Abstract]:Based on Lyapunov optimization method, a scheduling algorithm is proposed in the vehicle networking scenario with dense deployment of road-side infrastructure, aiming at the download requirements of the vehicle terminal delay limited content, which is based on the Lyapunov optimization method. The Lyapunov equation is established by using the waiting delay of the packet. The delay requirement of the user can be guaranteed by transmission and packet loss decision, and the system stability can be guaranteed. The simulation results show that compared with the earliest expired priority algorithm, The proposed method not only meets the needs of user delay, but also improves the throughput of the system.
【作者单位】： 西安电子科技大学通信工程学院;
【基金】：国家自然科学基金面上项目(61571351) 陕西省自然科学基础研究计划项目(2016JM6028) 国家科技重大专项项目(2015ZX03002006-003)
【分类号】：TN929.5;U495
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本文编号：1608569