复杂光纤网络流量数据快速调度模型分析  

Analysis of fast scheduling model for traffic data of complex optical networks

作　　者：刘汝媚[1] 黎晓凤[1] LIU Rumei;LI Xiaofeng(School of Information and Engineering, Guangxi University of Foreign Languages, Nanning 530222 ,China)

机构地区：[1]广西外国语学院信息工程学院

出　　处：《激光杂志》2019年第7期87-91,共5页Laser Journal

基　　金：2013年广西省项目(No.2013JGA261)

摘　　要：当前光纤网络调度流量数据时,调度后流量数据在光纤网络中的传输速度较低,不能合理的利用光纤网络的链路,存在流量数据平均传输时延高、链路利用率低的问题。提出复杂光纤网络流量数据快速调度模型分析方法,通过令牌桶算法平滑复杂光纤网络中存在的流量数据,利用延迟速率服务模型计算光纤网络中会话的延迟,依据缓冲器的大小得到忙期中会话的分组丢失数,根据分组丢失数计算分组在复杂光纤网络中的最大丢失率,结合最大丢失数和丢失率得到光纤网络中会话的延迟。在邻居节点滑动窗口中通过数据稀有性和数据需求信息计算流量数据在光纤网络中的优先级,根据节点在光纤网络中下载和上传的流量数据计算节点的贡献率。结合会话延迟、流量数据优先级和节点贡献率构建复杂光纤网络流量数据快速调度模型,并采用粒子群算法求解调度模型,输出最优解,完成复杂光纤网络中流量数据的快速调度。实验结果表明,所提方法的流量数据平均传输时延低、链路利用率高。When the current fiber network schedules traffic data, the transmission speed of the scheduled traffic data in the fiber network is low, and the link of the fiber network cannot be reasonably utilized. The average transmis sion time of the traffic data is high and the link utilization rate is low. Therefore, a fast scheduling model analysis method for complex fiber network traffic data is proposed. The token bucket algorithm is used to smooth the traffic data existing in the complex fiber network. The delay rate service model is used to calculate the delay of the session in the fiber network. The number of packet loss of the session in the busy period is obtained according to the size of the buff er. The maximum loss rate of the packet in the complex optical network is calculated according to the packet loss num ber, and the delay of the session in the optical network is obtained by combining the maximum loss number and the loss rate. The priority of the traffic data in the optical network is calculated by the data rarity and the data requirement information in the sliding window of the neighbor node, and the contribution rate of the node is calculated according to the traffic data downloaded and uploaded by the node in the optical network. Combining session delay with traffic data priority and node contribution rate, a fast scheduling model of complex fiber network traffic data is constructed. The particle swarm optimization algorithm is used to solve the scheduling model, and the optimal solution is output to com plete the fast scheduling of traffic data in complex optical networks. The experimental results show that the traffic data of the proposed method has low average transmission delay and high link utilization.

关 键 词：光纤网络 流量数据 调度模型 

分 类 号：TN393[电子电信—物理电子学]