In order to adapt to the characteristics of multi-constrained quality of service(QoS) routing in next generation internet(NGI),an intelligent QoS unicast routing algorithm based on PSO(particle swarm optimization) is presented.

• 为了适应下一代互联网对多个约束条件服务质量(QoS)的要求；提出了一种基于粒子群优化PSO(Par-ticle Swarm Optimization)的智能QoS单播路由算法.