中文摘要：

介绍了一种在SDN架构下的新型网络资源分配机制。传统的网络结构在资源分配的过程中存在诸多缺点,导致网络性能不够稳定,拥塞控制比较被动,严重影响用户体验。提出一种综合考虑影响资源分配一切因素、系数优先的弹性网络资源分配算法,通过划定优先级来决定资源分配的方式。本算法基于SDN架构,可以显著改善传统网络资源分配的不足。介绍了SDN体系的背景和发展以及针对无线网络的SDN扩展,提出系数优先的弹性网络资源分配算法,从各个细节描述和分析本算法的思路和实现过程。通过仿真实验对本算法的性能进行评测,说明本算法的优越性。

英文摘要：

This paper introduces a brand new resource allocation mechanism based on SDN. Countless shortcomings have been witnessed in the architecture of traditional network resource allocation which results in terrible stability together with passive congestion control ability and highly affect user experience. We come up with a resource allocation mechanism based on coefficient which considers factors in effecting resource allocation work. This mechanism gives every factor a priority which depends how resource is allocated. Based on the architecture of SDN, this mechanism can remarkably promote the conventional resource allocation approach. First of all, the paper introduces the background and the development of SDN. Then, the extension of SDN in wireless network is introduced. After that, the paper comes up with the new resource allocation mechanism based on coefficient and some details about its logic and implementation. At last, with simulation experiment, we evaluate the performance of the mechanism which illustrates its advancement.