A Cross-Layer Architecture with Service Adaptability for Wireless Multimedia Networks

Abstract

In this paper, a novel cross-layer architecture based on the hierarchical protocol structure is proposed to improve the quality of service (QoS) for the video transmission over wireless multimedia networks. In addition, an average bandwidth measurement approach is used to adjust the video delivery immediately. Furthermore, the proposed cross-layer architecture uses both the bandwidth measurement and queue adaptation for the current communication protocol of wireless multimedia networks. Finally, it is shown by NS2 simulations that the methods of both average bandwidth measurement and dynamic queue adaptation do not consume any network resource, and the proposed method can yield a better performance for transmission delay time, image quality and packets throughput over wireless networks. KeywordsCross-layer architecture; bandwidth measurement; queue adaptation; wireless multimedia network