Proactive reverse-link traffic management for minimum load fluctuation in high-speed CDMA systems

The 3rd generation cellular systems provide high-speed and high-quality data services to mobile users. While most of the related researches have focused on the forward link improvement due to the asymmetric nature of Internet traffic, efficient scheduling algorithms are also required for the reverse-link operation. The main goal of the reverse-link scheduling algorithm is to keep the total reverse-link interference at an acceptable level. In the high-speed CDMA system, an efficient traffic management algorithm has been introduced for the reverse-link operation, based on a simple probabilistic model. However, the probabilistic model may cause the traffic load to fluctuate around a certain threshold unnecessarily. This paper proposes a proactive traffic management solution that suppresses excessive interference and unnecessary traffic fluctuations on the reverse link. The proposed traffic management is compared with ideal and conventional schemes.