A Wireless Channel Model Based Rate Control (WMRC) Scheme in RTP/UDP for Real Time Multimedia Transmissions over Wired-Wireless Networks(WMRC- RTP/UDP)
Nanjing Univ. of Posts and
Nanjing Univ. of Posts and
This document introduces a Wireless Channel Model Based rate control scheme for improving the behavior of real time multimedia streams with TFRC [2] in wireless-wired heterogeneous networks. Based on wireless channel characteristics, the method can first identify the level of packet losses of two different types by sending large and small packets alternately, then adopt different adaptive rate control strategies to increase the network throughput and decrease congestion packet loss rate, to improve transmission quality of real-time multimedia stream. The proposed method is compared with previously reported algorithms [3-4] by simulation. It is shown from the simulation results in different network topology environments, the performance the proposed algorithm is better than existing algorithms in the aspects of network bandwidth utilization and congestion packet loss control. Parts of this method published in the IEEE Wireless Communications and Networking Conference (WCNC2007) and in a pending China patent (access number: CN101686100).