QoS-Oriented Packet Scheduling Schemes for Multimedia Traffics in OFDMA Systems

摘要

In this paper, we propose packet scheduling disciplines for multimedia traffics in the contexts of OFDMA systems. For real time traffics, packet loss fair scheduling (PLFS), in which the packet loss of each user from different real time traffics is fairly distributed according to the QoS requirements is applied. A simple priority order queue mechanism is applied for non-real time traffics. In addition, to compensate fast and slow channel variation we employ link adaptation technique such as AMC. From the simulation results, our proposed packet scheduling scheme can support QoS differentiations with guaranteeing short-term fairness as well as long-term fairness for various multimedia traffics.