| With the arrival of 5G era,high-speed and high-bandwidth communication capabilities are driving the development of the mobile Internet field,and people’s demand for low-latency,high-bandwidth streaming media and real-time interactive applications is growing.The cloud life mode of online education,live entertainment and video conferencing has been deeply rooted in people’s hearts and has become a standard for people in the new era.However,the traditional content distribution network and TCP-based transmission technology are still far from meeting the human needs for real-time audio and video interaction on the Internet.The development of real-time streaming media distribution technology is imminent,and new methods are urgently needed to solve the quality problems of real-time streaming media in network transmission.This paper studies two key problems in real-time audio and video transmission:the last kilometer of user access and the quality of intermediate network link.By improving and enhancing the mainstream congestion control algorithm GCC in the field of real-time communication,the capability of weak network countermeasures in the last kilometer is improved,and the capability of intermediate link quality in the transmission network is improved through real-time streaming media distribution network.Finally,a real-time streaming media distribution network is built,and the function test is carried out to verify the system’s function of sensing network state changes and selecting the best transmission path in real time.The experimental environment of audio and video transmission module is built,and the comparison experiment between the improved congestion control algorithm and the original algorithm is carried out to verify the effectiveness of the algorithm optimization. |
