多路径传输控制协议(Multipath Transmission Control Protocol,MPTCP)是传输控制协议的一种扩展,实现端到端动态地利用多个地址建立多条传输路径,从而提高网络传输质量和可靠性.但是,MPTCP仍存在局限,能够解决端到端已确定的多路径调...多路径传输控制协议(Multipath Transmission Control Protocol,MPTCP)是传输控制协议的一种扩展,实现端到端动态地利用多个地址建立多条传输路径,从而提高网络传输质量和可靠性.但是,MPTCP仍存在局限,能够解决端到端已确定的多路径调度问题,但难以实现不同端以及变化端间的路径协作.智慧协同网络是一种新型的未来网络体系,其核心思想是通过网络组件的智慧协作,最大限度优化利用网络资源,提高网络工作效率.本论文提出了基于智慧协同网络的多源协作传输控制机制,实现了传输控制协议从单源多路径向多源多路径的突破.具体来说,首先刻画了一种智慧协同网络的多源协作传输架构,引入子源协作传输方法,并详细介绍了多源协作机制的理论模型、报文格式以及子源协作管理的核心工作流程.通过仿真实验验证,多源协作传输控制机制能够将拥塞窗口平均利用率从51%提升至96%,并提高网络利用率和吞吐量.展开更多
The network coding is a new technology in the field of information in 21st century. It could enhance the network throughput and save the energy consumption, and is mainly based on the single transmission rate. However...The network coding is a new technology in the field of information in 21st century. It could enhance the network throughput and save the energy consumption, and is mainly based on the single transmission rate. However, with the development of wireless network and equipment, wireless local network MAC protocols have already supported the multi-rate transmission. This paper investigates the optimal relay selection problem based on network coding. Firstly, the problem is formulated as an optimization problem. Moreover, a relay algorithm based on network coding is proposed and the transmission time gain of our algorithm over the traditional relay algorithm is analyzed. Lastly, we compare total transmission time and the energy consumption of our proposed algorithm, Network Coding with Relay Assistance (NCRA), Transmission Request (TR), and the Direct Transmission (DT) without relay algorithm by adopting IEEE 802.11b. The simulation results demonstrate that our algorithm that improves the coding opportunity by the cooperation of the relay nodes leads to the transmission time decrease of up to 17% over the traditional relay algorithms.展开更多
文摘多路径传输控制协议(Multipath Transmission Control Protocol,MPTCP)是传输控制协议的一种扩展,实现端到端动态地利用多个地址建立多条传输路径,从而提高网络传输质量和可靠性.但是,MPTCP仍存在局限,能够解决端到端已确定的多路径调度问题,但难以实现不同端以及变化端间的路径协作.智慧协同网络是一种新型的未来网络体系,其核心思想是通过网络组件的智慧协作,最大限度优化利用网络资源,提高网络工作效率.本论文提出了基于智慧协同网络的多源协作传输控制机制,实现了传输控制协议从单源多路径向多源多路径的突破.具体来说,首先刻画了一种智慧协同网络的多源协作传输架构,引入子源协作传输方法,并详细介绍了多源协作机制的理论模型、报文格式以及子源协作管理的核心工作流程.通过仿真实验验证,多源协作传输控制机制能够将拥塞窗口平均利用率从51%提升至96%,并提高网络利用率和吞吐量.
基金Supported by Anhui Natural Science Foundation, China(No.1308085MF87, 128085MF89)Open Fund of State Key Laboratory for Novel Software Technology,Nanjing University,China (No.KFKT2011B18)Hefei University of Technology Ph.D. Foundation (No.2010HGBZ-0552)
文摘The network coding is a new technology in the field of information in 21st century. It could enhance the network throughput and save the energy consumption, and is mainly based on the single transmission rate. However, with the development of wireless network and equipment, wireless local network MAC protocols have already supported the multi-rate transmission. This paper investigates the optimal relay selection problem based on network coding. Firstly, the problem is formulated as an optimization problem. Moreover, a relay algorithm based on network coding is proposed and the transmission time gain of our algorithm over the traditional relay algorithm is analyzed. Lastly, we compare total transmission time and the energy consumption of our proposed algorithm, Network Coding with Relay Assistance (NCRA), Transmission Request (TR), and the Direct Transmission (DT) without relay algorithm by adopting IEEE 802.11b. The simulation results demonstrate that our algorithm that improves the coding opportunity by the cooperation of the relay nodes leads to the transmission time decrease of up to 17% over the traditional relay algorithms.
