Acta Metallurgica Sinica(English letters) ›› 2009, Vol. 16 ›› Issue (2): 63-67.doi: 10.1016/S1005-8885(08)60204-6

• Networks • Previous Articles     Next Articles

QoS-guaranteed packet scheduling in wireless networks

ZHANG Deng-yin, JIANG Juan, ANANI Adi, LI Hai-bo   

  1. Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-04-30
  • Contact: ZHANG Deng-yin

Abstract:

To guarantee the quality of service (QoS) of a wireless network, a new packet scheduling algorithm using cross-layer design technique is proposed in this article. First, the demand of packet scheduling for multimedia transmission in wireless networks and the deficiency of the existing packet scheduling algorithms are analyzed. Then the model of the QoS-guaranteed packet scheduling (QPS) algorithm of high speed downlink packet access (HSDPA) and the cost function of packet transmission are designed. The calculation method of packet delay time for wireless channels is expounded in detail, and complete steps to realize the QPS algorithm are also given. The simulation results show that the QPS algorithm that provides the scheduling sequence of packets with calculated values can effectively improve the performance of delay and throughput.

Key words:

packet scheduling;QoS;wireless network;cross-layer design