项目名称: 基于单向链路时延的SCPS-TP双端双向拥塞控制模型与算法研究
项目编号: No.61501307
项目类型: 青年科学基金项目
立项/批准年度: 2016
项目学科: 无线电电子学、电信技术
项目作者: 姜月秋
作者单位: 沈阳理工大学
项目金额: 19万元
中文摘要: 在空间通信网络的传输层技术中,如何提高带宽利用率和进行有效的拥塞控制是研究的热点和难点问题。但现有的多数研究很难有效地实现空间通信网络中正向链路和反向链路的双向拥塞控制。为此,本课题开展基于单向链路时延的SCPS-TP双端双向拥塞控制模型与算法研究,主要包括基于单向链路时延的SCPS-TP双端双向拥塞控制模型的建立、基于数据分组长度和正向时延的TCP Vegas正向拥塞控制算法研究、基于确认分组长度的多窗口SNACK确认机制研究和相关的TP分组首部选项设计研究,并且基于OPNET仿真系统,进行仿真、测试与验证。研究结果可以为SCPS-TP协议的应用、空间网络的组建、以及空天地一体化信息网络的研究提供重要的技术支撑。
中文关键词: 空间通信网络;带宽利用;拥塞控制;链路时延;TP首部选项
英文摘要: Bandwidth usage and congestion control has been the hot and difficult problem in the study of the transport layer technology of space communication network. Most present researches on the model of congestion control cannot effectively realize two-way congestion control of the forward and reverse link in the space communication network. Therefore, this project studies the model and algorithms of end-to-end and two-way congestion control in SCPS-TP based on the one-way link delay, which includes the founding of the model and algorithms of end-to-end and two-way congestion control in SCPS-TP based on the one-way link delay, the TCP Vegas forward congestion control algorithm based on the length of data segments and forward link delay, and the multi-window SNACK acknowledgment mechanism study based on the length of acknowledgement segments and related study of options in TP header. In addition, the simulation, test and confirmation process of the above research based on the OPNET simulation system is done. The research results can provide important technical support for the application of SCPS-TP agreement, the establishment of space communication and the study on information networks of space earth integration.
英文关键词: space communication network;bandwidth usage;congestion control;link delay;options in TP header