A Novel Cross-Layer Scheduling Algorithm for OFDMA-Based WiMAX Networks

• 作者: Ronak Farhadi Shahriar Shirvani Moghaddam Vahid Tabataba Vakili
• 来源期刊: 通讯、网络与系统学国际期刊(英文)
• 学科: 工学
• 关键词: CROSS-LAYER IEEE802.16E OFDMA QoS SCHEDULING WIMAX
• 年，卷（期）: 2011,（2）
• 页码范围: 98-103
• 页数: 6页
• 分类号: TN92

摘要

IEEE 802.16e based WiMAX networks promise a desirable available quality of service for mobile users and scheduling algorithms provide the best effective use of network resources in it. In this paper, we propose a novel cross-layer scheduling algorithm for OFDMA-based WiMAX networks. Our scheme employs a priority function at the MAC layer and a slot allocation policy at physical layer and by interaction between these two layers specifies the best allocation for each connection. Simulation results show performance of proposed scheme in comparison with two other well-known scheduling algorithms, MAX-SNR scheduling and Proportional Fairness (PF) scheduling. Our proposed cross-layer algorithm outperforms the other algorithms in delay and packet loss rate values for real-time services.