Analysis of Statistical Time-access Fairness Index of Opportunistic Feedback Fair Scheduler

摘要

Since the utilization of multiuser diversity in wireless networks can increase the information theoretic capacity of the overall system, much attention has been paid to schedulers exploiting multiuser diversity. However, packet schedulers exploiting multiuser diversity have a disadvantage of consuming the bandwidth for the feedback load. From a view of feedback reduction, the opportunistic feedback fair scheduler is considered as an attractive choice among schedulers exploiting multiuser diversity. In this paper, considering the statistical time-access fairness index (STAFI) as a measure of short term fairness, we study the short term fairness provided by the opportunistic feedback fair scheduler. Numerical results display that the threshold value of the scheduler greatly affects the properties of its short term fairness.