SCTP在NGN中的应用与性能研究

【作者】 张淼；

【导师】 廖青；

【作者基本信息】 北京邮电大学 ， 通信与信息系统， 2006， 硕士

【摘要】 随着移动通信网络在经历了2代的GSM、2.5代的GPRS，发展到目前以TD-SCDMA、WCDMA和CDMA2000为主的第三代系统标准，逐步显现出了对多媒体业务、以及无线传输带宽的巨大需求，这一切都推动了下一代网络的发展，为了使SCTP在NGN中有更为广泛的应用，SVWG工作组不断发布新的扩展协议，但是目前这些扩展协议都只是停留在探讨阶段，对其在NGN中的具体传输性能和应用的研究仍很缺乏。因此，本论文着眼于新型传输协议流控制传输协议SCTP在下一代网络中的应用与性能研究。 本文从理论上分析了SCTP最新的两种扩展协议：移动SCTP和SCTP非可靠扩展，这是针对SCTP移动性访问所面临的问题专门提出的，扩展草案中提出了利用SCTP进行传输层的位置管理和切换管理的设想，本文通过对这个草案及相关文献的研究，提出了结合SIP、MobileIP和RserPool的位置管理和切换管理方法和流程，从而便于SCTP应用到移动环境中。 为了能够公平比较传输协议的差异性，仿真采用了目前NGN中使用很广泛的SIP协议作为应用层协议，SCTP性能的分析主要是通过与现有的两个传输层协议UDP和TCP传输时延的比较得出的，文中分别采取了仿真图示和数理统计的方法进行了比较归纳，得出结论基本符合理论分析结果。 移动Internet的业务将以多媒体业务为主，目前主要依赖传(?)协议TCP来保证可靠传输，但是SCTP虽然是为了传输信令提出的，其先进的特性使其应用的前景十分广阔。结合SCTP的扩展协议，本文构建了基于SCTP的移动Internet的三种传输模型，分析了SCTP特性在移动性访问接入性能上带来的提高，文章最后总结归纳了SCTP在NGN中其他的一些应用。更多还原

【Abstract】 As the wireless telecommunication networks evolving through the 2nd generation of GSM, 2.5G of GPRS, to the current 3rd generation standards represented by TD-SCDMA, WCDMA and CDMA2000, the demands for the multimedia service and wireless transmission bandwidth are becoming more and more serious. All these have accelerated the development of the next generation of networks. To make SCTP find more applications in NGN, SVWG working group has been releasing new extended protocols, but up to date these extended protocols are only rested in the stage of discussion, and the studies in the special transmission performance and applications are still not to the full extent. Thus this paper lays emphasis on the studies of applications and performance of the new type of transmission protocol (Stream control transmission protocol SCTP, IETF RFC2960) in the next generation of networks.In this paper, the two newest types of extended protocols are analyzed theoretically first: the mobile SCTP and SCTP non-reliable extending, which are raised just for solving the problems faced by the SCTP mobility visiting. In the extended draft the suppose of the location management and switching management with SCTP have been proposed, and in this paper through the studies of this draft and the related reference, the method and flow of location management and switching management that combined SIP, Mobile IP and Rser Pool have been proposed, thus making the application of SCTP to the mobile much easier.To compare the difference of transmission protocols fairly, the simulation has engaged the SIP protocol, which has been widely used as the application layer protocol. The analysis of SCTP performance is mainly through the comparison of the transmission delay with the two transmission protocols, UDP and TCP. In the paper the simulation igures and mathematical statistical methods are being used to do the comparison and analysis, and the conclusion agrees well with the theoretical analysis results.更多还原