Читать книгу Dynamic Spectrum Access Decisions - George F. Elmasry - Страница 83

A cloud service has to be evaluated by certain metrics per the NIST explanations of cloud services. The previous chapters have introduced metrics in areas such as the time between detecting interference (service request) and the time of overcoming interference and showed how this time as a metric can depend on the entity hierarchy and the specific mix and match of this hybrid approach to DSA. It is important to note that with IaaS, there may be direct metrics and indirect metrics. For example, measuring control traffic volume as a metric may not be used because measuring throughput efficiency or quality of service (QoS) metrics can indirectly consider control traffic volume impact.⁷ Intuitively, the lower the control traffic volume impact, the higher the throughput efficiency achieved, and thus measuring throughput efficiency indirectly measures the impact of control traffic volume.