提出了一种基于模糊测度的方法,采用Choquet积分模型定量测度IEEE 802.11的MAC协议中各参数及其参数之间的内在关系对系统性能的影响。根据测度结果优化MAC层协议参数集,获得对吞吐量影响最大的参数子集。通过调整子集中的参数,提出一种有效提高WLAN吞吐量的策略。仿真结果表明,根据测度结果只需调整子集中的参数以提高吞吐量,有效改善无线资源利用率。
This paper proposed a new approach for dynamic interdependency measure among system parameters by using fuzzy measure theory,and applied the Choquet integral model to distinguish the interaction among system parameters towards the objective function through a set of non-additive measures.Then identified the most significant effect subset on the performance metrics of interest for system objective function.The simulations show that only adjusting the parameters in the optimized subset according to the interdependency measure can improved the network throughput,consequently,the radio resource is utilized more reasonably.