传统互联网和移动互联网的移动性支持技术均面临着许多问题,其中很重要的一点就是现有的传输层协议尤其是可靠性传输协议在移动和无线环境下性能很差。针对流控制传输协议SCTP(Stream Control Transmission Protocol)及其移动性支持功...传统互联网和移动互联网的移动性支持技术均面临着许多问题,其中很重要的一点就是现有的传输层协议尤其是可靠性传输协议在移动和无线环境下性能很差。针对流控制传输协议SCTP(Stream Control Transmission Protocol)及其移动性支持功能进行研究,分析了SCTP在移动IP网络下的性能和优化方案。展开更多
SCTP协议(Stream Control Transmission Protocol)是一种面向报文的、可靠的传输层协议。它基于不可靠的、无连接的分组IP网络,具有多宿(multi-homing)和多流(multi-streaming)等特性。通过仿真的方法分析,证实SCTP在支持实时多媒体网...SCTP协议(Stream Control Transmission Protocol)是一种面向报文的、可靠的传输层协议。它基于不可靠的、无连接的分组IP网络,具有多宿(multi-homing)和多流(multi-streaming)等特性。通过仿真的方法分析,证实SCTP在支持实时多媒体网络应用时的许多性能参数明显优于传统的TCP和UDP,包括数据包投递率、带宽开销、端到端延迟、延迟抖动等。在此基础上,探讨一个适合在流媒体应用中,能够有效提高流媒体传输质量的策略。展开更多
Concurrent multipath transfer（CMT） using stream control transmission protocol（SCTP） multihoming has become an appealing option to increase the throughput and improve the performance of increasingly bandwidth-hungr...Concurrent multipath transfer（CMT） using stream control transmission protocol（SCTP） multihoming has become an appealing option to increase the throughput and improve the performance of increasingly bandwidth-hungry applications.To investigate the rate allocation for applications in CMT,this paper analyzes the capacities of paths shared by competing sources,then proposes the rate allocation model for elastic flows based on the framework of network utility maximization（NUM）.In order to obtain the global optimum of the model,a distributed algorithm is presented which depends only on local available information.Simulation results confirm that the proposed algorithm can achieve the global optimum within reasonable convergence times.展开更多
文摘传统互联网和移动互联网的移动性支持技术均面临着许多问题,其中很重要的一点就是现有的传输层协议尤其是可靠性传输协议在移动和无线环境下性能很差。针对流控制传输协议SCTP(Stream Control Transmission Protocol)及其移动性支持功能进行研究,分析了SCTP在移动IP网络下的性能和优化方案。
基金国家自然科学基金(the National Natural Science Foundation of China under Grant No.60673185)。
文摘SCTP协议(Stream Control Transmission Protocol)是一种面向报文的、可靠的传输层协议。它基于不可靠的、无连接的分组IP网络,具有多宿(multi-homing)和多流(multi-streaming)等特性。通过仿真的方法分析,证实SCTP在支持实时多媒体网络应用时的许多性能参数明显优于传统的TCP和UDP,包括数据包投递率、带宽开销、端到端延迟、延迟抖动等。在此基础上,探讨一个适合在流媒体应用中,能够有效提高流媒体传输质量的策略。
基金supported by the National Natural Science Foundation of China (60833002)the National Basic Research Program of China (973 Program) (2007CB307100)+2 种基金the National High Technology Research and Development Program of China (863 Program) (2007AA01Z202)the Program for Changjiang Scholars and Innovative Research Team in University (IRT0707)the Program of Introducing Talents of Discipline to Universities (111 Project) (B08002)
文摘Concurrent multipath transfer（CMT） using stream control transmission protocol（SCTP） multihoming has become an appealing option to increase the throughput and improve the performance of increasingly bandwidth-hungry applications.To investigate the rate allocation for applications in CMT,this paper analyzes the capacities of paths shared by competing sources,then proposes the rate allocation model for elastic flows based on the framework of network utility maximization（NUM）.In order to obtain the global optimum of the model,a distributed algorithm is presented which depends only on local available information.Simulation results confirm that the proposed algorithm can achieve the global optimum within reasonable convergence times.
