基于缓冲占用比无人机视频自适应传输算法

A New Adaptive Wireless Transmission Algorithm of UAV Video Based on Buffer Occupancy

摘要:

针对目前基于发送速率的自适应视频传输算法不能有效利用和适应网络传输,提出了利用数据缓冲占用比的无人机载视频自适应无线传输方法；通过计算发送缓存内的数据占空比的变化判断网络发送能力,进而调节下次采集的视频帧率,或在调节下次采集视频帧率之前调整压缩编码率,由此自适应的设置最大化传输速率；相对于传统基于线性增加发送速率的方法,文章算法根据数据占空比自动调节发送速率和编码率,使平均发送速率提高了0.25 Mbit/s,带宽利用率提高了8%,实现了在不同网络状况下发送速率和编码率的自适应最大化,通过有效利用网络传输,提高视频数据传输的实时性、可靠性和完整性。

Abstract:

According to the problem that the network traffic status is not effective in the adaptive video transmission algorithm based on transmission speed, a new adaptive wireless transmission algorithm of UAV video based on the buffer occupancy is proposed. By calculating the buffer occupancy of the transmit buffer to judge the ability of network transmission, the next acquisition rate is adjust, or the compression code rate before adjusting the next acquisition rate is adjust, the maximum transmission rate is set to maximum.Compared with the linear method to increase the transmission rate based on the traditional algorithm, the sending rate and code rate is adjusted based on the duty ratio in this algorithm, the average sending rate increased 0.25 Mbit/s, bandwidth utilizationrate increased by 8%,the maximize the data transmission and coding is realized in the network under the different network, the utilize the transmission status of the network is effectively, so as to ensure the real-time, reliability and data integrity of the video data transmission.