基于SDN理念的分组域核心网网关设备的优化研究与设计

发布时间：2018-04-17 01:14

本文选题：SDN + 分组核心网　；参考：《北京邮电大学》2014年硕士论文

【摘要】：由于当前移动网络中设备的控制面与数据面互相依赖、软件功能与硬件互相依赖,以致现网中核心网网关设备的功能增强不够灵活,新功能的植入与更新的进程也十分缓慢。因此,实现分组域核心网网元设备控制面的软件、硬件的独立,可以使得网络中的硬件资源得到最大程度的利用,软件功能灵活增强,大大地降低运营商在对网元(尤其是网关设备)加入新的业务和功能、对设备维护和更新等过程中的成本。在这种思想的指导下,未来的移动分组域网络需要更加智能：在底层(交换机,路由器)数据的路径是“哑巴的,简单的,最小的”,并为流量中设置一个通用的API,同时使用控制器来控整个网络。这样研究人员便能够自由地调用底层API在该控制器上进行编程,从而更为轻松地实现核心网网元(尤其是网关)的创新功能。本课题主要研究如何利用SDN技术改进分组域核心网的架构及功能设计,实现业务功能的快速灵活增强,实现硬件资源的灵活管理、共享及分配,降低核心网功能增强的成本。具体内容包括：剖析移动网络中分组域核心网架构,研究基于SDN理念的分组域核心网网关设备的架构,分析、设计新架构及优化策略,并通过数据调研进行分析验证。
[Abstract]:Due to the interdependence of the control surface and data surface of the devices in the current mobile network, and the interdependence between the software function and the hardware, the function enhancement of the core network gateway equipment in the present network is not flexible enough, and the process of the implantation and updating of the new functions is very slow.Therefore, the realization of the software and hardware independence of the control surface of the core network element equipment in the packet domain can make the hardware resources in the network be utilized to the maximum extent, and the software function is enhanced flexibly.It greatly reduces the cost of operators in the process of adding new services and functions to network elements (especially gateway equipment), maintenance and updating of equipment, etc.Guided by this idea, future mobile packet-domain networks need to be more intelligent: the path to data at the bottom (switches, routers) is "dumb, simple, minimal."A universal API is set up for traffic and a controller is used to control the entire network.In this way, the researchers are free to call the underlying API to program on the controller, which makes it easier to realize the innovative function of the core network elements (especially the gateway).This paper mainly studies how to use SDN technology to improve the architecture and function design of the core network in packet domain, to realize the rapid and flexible enhancement of business function, to realize the flexible management, sharing and allocation of hardware resources, and to reduce the cost of enhancing the function of the core network.The specific contents include: analyzing the core network architecture of packet domain in mobile network, researching the architecture of packet core network gateway equipment based on SDN concept, analyzing, designing new architecture and optimizing strategy, and analyzing and verifying by data investigation.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.05

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