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Network utility maximisation through particle swarm optimisation

机译:通过粒子群优化最大化网络实用程序

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Given a network system with several nodes that are linked together in a certain topology, the network utility maximisation (NUM) problem is concerned with searching for the maximum aggregate utility function of all nodes under the constraint of limited link capacities. This paper proposes the use of a gradient-free, stochastic optimisation approach based on particle swarm optimisation (PSO) method for solving the NUM problem. In contrast to much of the prior solution methods which often assume the concavity of the network's utility function, the proposed PSO approach is capable of solving NUM problems with either concave or nonconcave utility functions. We show through simulation results of solving NUM problems in medium size networks that the optimal solutions obtained by the proposed PSO method indeed correspond to the exact global optima.
机译:给定一个网络系统,其中有几个节点以某种拓扑链接在一起,网络效用最大化(NUM)问题涉及在有限的链接容量约束下搜索所有节点的最大聚合效用函数。本文提出了一种基于粒子群优化(PSO)方法的无梯度随机优化方法来解决NUM问题。与通常假定网络效用函数为凹形的许多现有解决方案方法相比,所提出的PSO方法能够解决具有凹形或非凹形效用函数的NUM问题。我们通过解决中等规模网络中NUM问题的仿真结果表明,所提出的PSO方法获得的最优解确实对应于确切的全局最优解。

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