基于SDN的路径内包缓存重传传输协议
An SDN-Based Transmission Protocol with In-Path Packet Caching and Retransmission
摘要：
本文提出了一种用于第五代（5G）通信网络的基于综合软件定义网络（SDN）的传输协议（SDTP），其中SDN控制器从物理网络收集网络状态信息以提高端主机之间的数据传输效率，并具有路径内分组重传。在SDTP中，我们首先开发了一种新的双向握手机制，用于在一对终端主机之间建立连接。在SDN控制模块的帮助下，用于建立E2E连接的信令交换被迁移到控制平面，以提高数据平面中的资源利用率。设计了一种新的SDTP数据包报头格式，以支持具有路径内数据包缓存和数据包重传的高效数据传输。基于新的数据包格式，提出了一种新的基于路径接收器的丢包检测和基于缓存的包重传方案，以实现丢失包的路径快速恢复。大量的仿真结果验证了所提出的协议的有效性，在低连接建立延迟和低端到端的数据包传输延迟。
英文摘要：
In this paper, a comprehensive software-defined networking (SDN) based transmission protocol (SDTP) is presented for fifth generation (5G) communication networks, where an SDN controller gathers network state information from the physical network to improve data transmission efficiency between end hosts, with in-path packet retransmission. In the SDTP, we first develop a new two-way handshake mechanism for connection establishment between a pair of end host. With the aid of SDN control module, signaling exchanges for establishing E2E connections are migrated to the control plane to improve resource utilization in the data plane. A new SDTP packet header format is designed to support efficient data transmission with in-path packet caching and packet retransmission. Based on the new data packet format, a novel in-path receiver-based packet loss detection and caching-based packet retransmission scheme is proposed to achieve in-path fast recovery of lost packets. Extensive simulation results are presented to validate the effectiveness of the proposed protocol in terms of low connection establishment delay and low end-to-end packet transmission delay.
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