The paper deals with measurement-based CAC alternatives applicable to the novel WIND-FLEX architecture, a 17GHz wireless LAN recently developed in the framework of an European IST project. We first present some existing CAC algorithms based on traffic stream measurement. Afterwards, we develop a novel CAC algorithm which is based on queue state measurement. The performance of the different CAC algorithms is then evaluated by extensive simulations. One of the main conclusions from simulative investigations is that our novel CAC algorithm is superior to other ones from the aspects of achievable utilization and parameter robustness. Moreover the proposed solution requires no additional signaling overhead and demands low implementation complexity.