Delay Analysis of Packet Scheduling with Multi-Users Diversity in Wireless CDMA Systems

Abstract

There have been a number of studies that investigate efficient packet scheduling schemes to support quality of service of multiple real-time data users and to increase capacity of non-real-time users sharing a wireless channel. We consider the problem of scheduling transmissions of multiple data users sharing the same wireless channel so as to satisfy delay or throughput and present a general packet scheduling, called MBCS (Multi-users Best Channel Scheduling) which takes advantage of the multi-user diversity of a mobile wireless system. In this paper, a queuing model that represents radio resource management for supporting packet data services is developed for the purpose of evaluating the performance of wireless CDMA systems. Numerical results show that delay performance of the proposed scheduler is higher than that of the Single-user Best Channel Scheduler (SBCS) depending on the time-varying channel status.

Queueing Delay Analysis for the Joint Scheduling Exploiting Multiuser Diversity over a Fading Channel

“…Kim and Kang [9] consider MBCS (Multi-users Best Channel Scheduling) which takes advantage of multiuser diversity and derive the analytical result of mean delay in the case of two users. Numerical results show that the mean delay performance of the MBCS is better than that of the SBCS (Single-user Best Channel Scheduling).…”