Metrics for Efficiency of Spectrum Sharing in Wireless Networks

With the rapid development of wireless services, the demand for spectrum keeps growing. Spectrum sharing is regarded as a means to achieve more efficient spectrum access. This paper presents a literature review of current metrics for efficiency of spectrum sharing in wireless net- works. Considering the perspective of various stakeholders, namely the network operators, the government and the service providers. Two new metrics are introduced to ad- dress stakeholder interests: the Satisfaction Fairness Index (SFI) and the User Service Capacity (USC). Simulations are carried out to give examples of how both metrics can be used for an LTE-LAA and WiFi coexistence scenario. The SFI is proven to be effective for assessing both the fairness and satisfaction of a spectrum sharing network, while the USC can be used to gain insight into the number of users served.