Downlink packet scheduling based on channel condition for multimedia services of mobile users in OFDMA-TDD

Abstract

In this paper, we propose a Wireless Class Based Flexible Queueing (WCBFQ) which is an improved packet scheduling with QoS management based on wireless networks using OFDMA-TDD with adaptive modulation. Under time-varying channel condition, scheduler tries to guarantee required throughput demand for real-time traffic by allocating more channel time to the users in poor channel condition. On the other hand, for non-real time traffic, the scheduler gives lower priority to those experiencing poor channel conditions thereby favoring those having better channel for increased overall system throughput. Simulations are performed to demonstrate the effectiveness of the proposed scheme. © Springer-Verlag Berlin Heidelberg 2005.