A study of QoS guarantee and fairness based on cross‐layer channel state in Worldwide Interoperability for Microwave Access |
| |
| Authors: | Feng‐Ming Yang Wei‐Mei Chen Tzu‐Kai Cheng Jean‐Lien C. Wu |
| |
| Affiliation: | 1. Department of Electronic Engineering, National Taiwan University of Science and Technology, , Taipei, Taiwan;2. Applied Research Center Taiwan Company, Telcordia Technologies, Inc., , Taipei, Taiwan;3. Department of Computer and Communication Engineering, St. John's University, , Taipei, Taiwan |
| |
| Abstract: | Because the bandwidth usage of wireless transmission is limited, one of the major research topics in this field is to improve system throughput by supporting multiple users with limited bandwidth resources. Although there are several studies on cross‐layer designs for improving system throughput, previous research on quality‐of‐service guarantee and fairness are relatively rare. This study proposes a cross‐layer subcarrier permutation (CLSP) mechanism that uses cross‐layer strategies to select suboptimal subcarriers. Service flows simulations in the IEEE 802.16e system indicate that CLSP achieved a lower delay time and a long‐term fairness among multiple users. Experimental results further show that the throughput of CLSP is 28 percent higher than that of the partial usage of subchannels model using the orthogonal frequency division multiple access technique. Copyright © 2011 John Wiley & Sons, Ltd. |
| |
| Keywords: | QoS IEEE 802.16e PUSC OFDMA |
|
|
