Packet Scheduling Algorithm for Real-Time Services in Broadband WMAN  

作　　者：Zhang Hanyi, Su Xin (Wireless and Mobile Communication Technology R&D Center of Tsinghua University, Tsinghua National Laboratory for Information Science and Technology, Beijing 100084 , China ) 

出　　处：《ZTE Communications》2009年第4期45-48,共4页中兴通讯技术（英文版）

基　　金：This work was funded by the National High Technology Research and Development Program ("863" Program) of China under Grant No.2007AA01Z289

摘　　要：Packet scheduling algorithm is the key technology to guarantee Quality of Service (QoS) and balance the fairness between users in broadband Wireless Metropolitan Area Network (WMAN). Based on the research of Proportional Fairness (PF) algorithm and Modified Largest Weighted Delay First (M-LWDF) algorithm, a new packet scheduling algorithm for real-time services in broadband WMAN, called Enhanced M-LWDF (EM-LWDF), was proposed. The algorithm phases in new information to measure the load of service queues and updates the state parameters in real-time way, which remarkably improves system performance.Simulation results show that comparing with M-LWDF algorithm, the proposed algorithm is advantageous in performances of queuing delay and fairness while guaranteeing system throughput.Packet scheduling algorithm is the key technology to guarantee Quality of Service (QoS) and balance the fairness between users in broadband Wireless Metropolitan Area Network (WMAN). Based on the research of Proportional Fairness (PF) algorithm and Modified Largest Weighted Delay First (M-LWDF) algorithm, a new packet scheduling algorithm for real-time services in broadband WMAN, called Enhanced M-LWDF (EM-LWDF), was proposed. The algorithm phases in new information to measure the load of service queues and updates the state parameters in real-time way, which remarkably improves system performance.Simulation results show that comparing with M-LWDF algorithm, the proposed algorithm is advantageous in performances of queuing delay and fairness while guaranteeing system throughput.

关 键 词：Packet Scheduling Algorithm for Real-Time Services in Broadband WMAN QoS OFDMA Simulation real WIMAX IEEE EM 

分 类 号：TN925.93[电子电信—通信与信息系统]