A Cross-Layer Based Bandwidth and Queue Adaptations for Wireless Multimedia Networks

The IEEE 802.11e MAC standard can be used to support the quality of service (QoS) for wireless networks, but the bandwidth resource management is not efficient enough for the wireless multimedia network application. In this paper, a novel cross-layer architecture based on both the bandwidth measurement and queue adaptation is proposed to improve and adjust the video transmission over wireless multimedia networks. In other words, an average bandwidth measurement approach is used to adjust the video delivery immediately. Furthermore, the proposed cross-layer approach uses a dynamic queue adaptation for the current communication protocol of wireless multimedia networks. In addition, it is shown by NS2 simulations that the method of average bandwidth measurement does not consume any network resource, and the proposed method with dynamic queue adaptation can provide a more acceptable service quality by dynamically adapting the transmission rate.