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多路径路由的一个重要问题是如何有效地均衡网络负载.针对丢包率比较敏感的应用需求,本文利用最优化理论研究了在多路径环境下的负载均衡问题.均衡算法首先利用路径QoS指标预测每条路径的丢包率,然后将多路径负载均衡问题转化为最优化问题,在此基础上,利用粒子群优化算法(particle swarm optimization algorithm,PSO)动态求解调整每个路径的转发比例,并分析了影响转发比例的因素.通过理论分析及仿真实验表明,该算法能有效地降低网络丢包率,提高网络性能.
An important issue of multipath routing is how to effectively balance the network load.In view of the application requirements that the packet loss rate is sensitive to, this paper uses the optimization theory to study the load balancing in multi-path environment.The equalization algorithm firstly uses the path QoS index to predict Then, the multi-path load balancing problem is transformed into the optimization problem. On this basis, the particle swarm optimization algorithm (PSO) is used to dynamically solve and adjust the forwarding proportion of each path, and The factors affecting the forwarding ratio are analyzed.Through theoretical analysis and simulation experiments, this algorithm can effectively reduce the network packet loss rate and improve the network performance.