| Popis: |
Most current researches use packet loss as a prerequisite for congestion to design congestion control algorithms. Wi-Fi, 4G, satellite networks and other wireless networks have been widely used. Given that it is easily influenced by the natural environment, the transmission of wireless network features in large delay jitter and high random bit error rate (BER). In this network environment, the performance of traditional congestion control algorithm is poor. This paper proposes an improved congestion control algorithm NBBR. The algorithm is based on a feedback idea to adjust the sending rate of the sending end. Link capacity is used to adjust the transmission rate and the size of the congestion window to shield the transmission rate reduction caused by high bit error rate in wireless communication environment. Different delay measurement strategies are determined by the degree of delay jitter, which can reflect the network condition more accurately and improve the utilization rate of the network. Finally, by comparing the simulation experiment results, it is proved that the proposed algorithm can maintain higher throughput in the wireless network with higher delay jitter and higher BER. |
