A Capacity-Aware Cross-Layer QoS Optimization Scheme for Wireless Multimedia Networks

摘要：

A model-based channel capacity prediction scheme is proposed to provide statistical quality-of-service (QoS) guarantees under a medium or high traffic load for IEEE 802.11 based wireless multimedia networks. The proposed scheme perceives the state of wireless link from the MAC retransmission information and calculates the statistical channel capacity especially in saturated traffic load. Based on the capacity prediction model, resource reservation and QoS routing optimization are carried out. Via a cross-layer design approach, the scheme allocates network resource and forwards data packet by taking into consideration of the interference among flows and the link state. Simulation results show that the proposed scheme can achieve more accurate capacity prediction and higher resource utilization than previous QoS routing schemes, and improve network performance in terms of end to end transmission delay, packet delivery ratio and network throughput.

关键词： Wireless multi-hop networks Capacity prediction Probability statistics Cross-layer

作者: Hai-tao Zhao Rui Zhang Rong-fang Song Hui Zhang Yu-ning Dong Feng Tian1

作者单位: College of Communication and Information Engineering/Nanjing University of Posts and Telecommunicati College of Communication and Information Engineering/Nanjing University of Posts and Telecommunicati College of Communication and Information Engineering/Nanjing University of Posts and Telecommunicati

会议类型: 国际会议

会议名称: 2011年无线通信与信号处理国际会议(WCSP 2011)

会议地点: 南京

会议语种:英文

页码: 1-5

在线出版日期: 2011-11-09（万方平台首次上网日期，不代表论文的发表时间）