A channel-based mobile-assisted fairly-shared packet scheduling scheme for nonreal-time applications in CDMA networks

In this paper, we propose a fair packet scheduling scheme called CB+MA+FS for nonreal-time applications in a cellular CDMA network. Our research is motivated by the need to provide increased throughput in downlinks of a cellular CDMA system while ensuring fairness to users in terms of delivered throughput over time. The following packet scheduling schemes are investigated in this paper: channel based only (CBO), channel based and proportional fairness (CB+PF), and the proposed channel-based mobile-assisted and fairly-shared (CB+MA+FS). An indicator is used to decide the packets to be scheduled in each slot based on realtime channel conditions, required E_b/I₀, required average rate and achieved average rate. For each user, base station computes this indicator and ranks all users based on this indicator. Then, a certain percentage of users is scheduled based on the current link states and achieved average throughput.