湖南联通分组域DT技术方案研究

发布时间：2018-05-06 16:03

本文选题：DT + SGSN　；参考：《南京邮电大学》2014年硕士论文

【摘要】：随着湖南联通3G用户数和数据业务流量量迅速增长,给通信网络带来的巨大的扩容压力。对于SGSN和GGSN而言,用户面数据经SGSN转发至GGSN,而SGSN用户面处理能力有限。因此,解决数据流量给SGSN用户面带来的压力,势在必行。论文综述了分组域核心网结构及原理、DT技术的定义、信令流程、技术优势,重点对DT信令流程和参数变化、DT和智能终端业务行为对现网的影响进行了研究。根据分析结果,研究合理的Direct Tunnel引入策略、开启策略、开启范围、IP承载网的改造方案。结合湖南联通分组域核心网结构,从网络架构、组网规划、地址和路由配置等方面,部署DT网络实施方案,并从各个场景验证DT网络性能。用户面流量经由GGSN转发至RNC,有效地降低了SGSN用户面负荷、缩短了网络时延、提高了网络效率、扁平化网络结构,同时为向LTE的平滑演进奠定基础。经研究分析和实践验证,认为DT技术是当前最佳的减少SGSN用户面流量带宽的技术,通过制定合理优化的部署方案,能高效、合理地指导网络实际建设。
[Abstract]:With the rapid growth of 3G users and data traffic of Hunan Unicom, it brings huge pressure to communication network. For SGSN and GGSN, the user-face data is forwarded to GGSNvia SGSN, while the SGSN user-face processing ability is limited. Therefore, it is imperative to solve the pressure brought by data flow to SGSN users. This paper summarizes the structure and principle of packet-domain core network, the definition of DT technology, signaling flow, technical advantages, and focuses on the research of DT signaling process and parameter change and the influence of intelligent terminal service behavior on the existing network. According to the analysis results, the reasonable Direct Tunnel introduction strategy, the opening strategy, the open range IP carrying network transformation scheme are studied. Based on the core network structure of Hunan Unicom packet domain, the implementation scheme of DT network is deployed from the aspects of network architecture, network planning, address and routing configuration, and the performance of DT network is verified from various scenarios. The user surface traffic is forwarded to the SGSN via GGSN, which can effectively reduce the SGSN user load, shorten the network delay, improve the network efficiency, flat network structure, and lay the foundation for the smooth evolution to LTE. Through research, analysis and practice, it is concluded that DT technology is the best technology to reduce the bandwidth of SGSN user surface traffic, and it can guide the practical construction of the network efficiently and reasonably by making a reasonable and optimized deployment plan.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5

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