基于SDN的配电网通信动态带宽分配算法

DYNAMIC BANDWIDTH ALLOCATION ALGORITHM FOR DISTRIBUTION NETWORK COMMUNICATION BASED ON SDN

针对配电网通信中存在的业务传输灵活性差、资源利用率低等问题,提出一种基于软件定义网络的自适应动态带宽分配算法。该算法对节点状态信息的收集与分析;通过软件定义网络控制器进行模块化控制并计算出最优带宽;根据资源分配情况进行休眠节能。该算法采用不同授权调整策略进行开发。实验结果表明,相比于传统混合TDM/WDM-EPON动态算法,该算法降低中低负载下的分组延迟以及平均队列深度,小负载节能百分比可达93.2%,可以有效提高带宽资源利用率,达到节能效果。

Aiming at the problem of poor transmission flexibility and low resource utilization in distribution network communication, an adaptive dynamic bandwidth allocation algorithm based on software defined network was proposed. The algorithm collected and analyzed the state information of nodes, then modularized control and calculated the optimal bandwidth by SDN controller, and it saved energy based on the distribution of resources. The algorithm adopted different authorization adjustment strategy for development. The experimental results show that compared to the traditional hybrid TDM/WDM-EPON dynamic algorithm, the algorithm reduces the packet delay and average queue depth under medium and low load, and the energy saving percentage of small load can reach 93.2%. It can effectively improve the utilization rate of bandwidth resources and achieve the energy saving effect.