Software Defined Cellular Wireless Networking

软件定义网络(SDN)是一项新的技术进步，旨在将控制平面与转发分组的数据平面物理分离，以提高网络的可编程性、可扩展性和性能，以及系统的管理简易性。为了更好地支持移动蜂窝系统中产生和传输的数据量的快速增长，有必要采用SDN，它带来了网络管理和控制的逻辑集中的概念。用户的需求也从基本的语音和短信服务转变为高质量的音视频流。物联网的发展预计也会增加蜂窝系统的压力。采用建议的SDN架构不仅可以增加吞吐量，还可以减少系统中的延迟。

Software Defined Networking (SDN) is a new technology advancement aimed at physically separating the control plane from the data plane which forwards packets, in order to improve programmability, scalability and performance of the network, as well as ease of management of the system. It has become necessary to adopt SDN which brings about the concept of logical centralization of network management and control in order to better support rapid growth in volume of data generated and transmitted in mobile cellular system. The needs of users has also changed from basic voice and short message services to high quality audio and video streaming. Evolution of Internet of Things is expected to increase the strain on the cellular systems as well. Adoption of proposed SDN architecture will not only increase throughput but also reduce latency in the system.