A Prioritized Random Access with Discriminative Power Ramping Step Size

Abstract

Power ramping makes the access more likely succeed in a contention, so power ramping can be modified to support the multi-class services in random access channel. In this paper, we introduce the discriminative power ramping into slotted-ALOHA channel and 3GPP common packet channel. The proposed scheme serves the high-priority service more rapidly and more efficiently with few defects in both channels.