摘要
针对当前网络服务质量控制方法中存在的用户满意度低和服务延迟长问题,提出基于蚁群算法的异构融合网络中服务质量控制方法。定义网络服务质量效用函数,结合质量参数层与使用者感知层关键质量参数定量评价网络服务质量,引入网络服务延迟约束条件,构建异构融合网络中服务质量控制目标函数。基于网络资源ID查询资源目前状态信息,初始化网络各资源点信息素,并计算任务分配概率值,更新局部信息素,直到任务队列中的任务均被分配至资源处理处为止。判断任务成功解决与否,假设任务没有被成功解决,则重新调度网络资源,并将任务重新排列在等待队列中。实时更新全局信息素和网络中各个节点可信度,以此综合评价此次资源调度,假设调度方案满足网络服务质量控制目标函数,则将该调度方案当作最优网络服务质量控制方案;反之,则不断更新当前解,直到得到最优网络服务质量控制方案。实验结果表明,该方法用户满意度高、服务延迟短。
A service quality control method in heterogeneous integrated network based on ant colony algorithm was proposed.Firstly,the utility function of network service quality was defined,and then the network service quality was evaluated quantitatively by combining the key quality parameters of the quality parameter layer and user perception layer.Secondly,the constraint condition of network service delay was introduced to construct the objective function of service quality control in heterogeneous integrated network.Based on the network resource ID,the current status information of resource was queried and the pheromone of each resource point in network was initialized and the probability value of task allocation was calculated to update the local pheromone until all tasks in the task queue were assigned to the place where the resource was processed.It was necessary to determine whether the task was successfully solved.If the task was not successfully solved,we needed to reschedule the network resource and rearrange the tasks in the waiting queue.Moreover,the global pheromone and the reliability of each network node were updated in real time,so as to comprehensively evaluate this resource scheduling.If the scheduling scheme satisfied the objective function of network service quality control,the scheduling scheme could be regarded as the optimal scheme for network service quality control.Otherwise,the current solution was updated continuously until the optimal scheme for network service quality control was obtained.Simulation results show that this method has high user satisfaction and short service delay.
作者
陈思燕
夏阳
CHEN Si-yan;XIA Yang(Xinhu College of Sun,Yat-Sen University,Guangzhou Guangdong 510520,China)
出处
《计算机仿真》
北大核心
2020年第3期364-367,共4页
Computer Simulation
基金
国家高层次人才特殊支持计划项目(50000-31910018)
广东省教育科学"十二五"规划研究项目(2013JK340)。
关键词
异构
互联网
服务质量
控制
Isomerism
Network
Service quality
Control
