基于DPDK的包级别ICN视频传输

针对信息中心网络(Information-Centric Networks, ICN)的视频传输应用,仅仅靠天然的网络缓存来支撑视频的高效传输是远远不够的。为此,提出一种基于包级别缓存的视频传输策略来卸载传输的流量。引入数据平面开发套件(Data Plane Development Kit, DPDK)来保障视频的有效传输,体现在两个方面:(1)确保包的整齐切片;(2)用来加速端侧的视频传输速度。内容路由器增设一个包传输表(Packet Transmission Table, PTT)用于记录包的传输情况。采用真实的YouTube数据集对提出的传输方案进行验证,实验结果表明该方案在缓存命中率、传输时延和网络负载三个方面优于对比方案。

ICN-ORIENTED PACKET-LEVEL VIDEO TRANSMISSION BASED ON DPDK

For video transmission applications of information-centric networking(ICN),it is far from enough that only the inherent in-network caching is used to support the effective video transmission.This paper proposes a packet-level caching-based video transmission strategy to reduce the transmitted video traffic.In addition,data plane development kit(DPDK)is introduced to ensure the efficient video transmission.This is reflected in two aspects:one is to ensure the same size slicing of packets,and the other is to accelerate the video transmission speed on the end side.In particular,the content router is equipped with a packet transmission table(PTT)used to record the transmission condition of packet.The proposed scheme is simulated based on the real YouTube dataset,and the experimental results show that the proposed scheme is superior to the comparison scheme in cache hit ratio,transmission delay and network load.