An audio and video wireless optimized transmission system and method

By splitting the audio and video auxiliary streams into a base layer and an enhancement layer, and combining heartbeat detection and dynamic bandwidth allocation, the problem of difficult auxiliary stream transmission under network address translation (NAT) environment is solved, achieving stable and fast rendering of auxiliary stream video, and improving the bandwidth utilization and transmission reliability of video conferencing.

CN122437918APending Publication Date: 2026-07-21SHANDONG JINGRUN ELECTRONIC INFORMATION TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202610651837.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-12
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In a network address translation (NAT) environment, the IP address and port translation of the session initialization protocol device cause the secondary stream sharing stream to be unable to directly obtain the real IP address after the SDP negotiation is successful. Existing technologies have failed to effectively optimize the first frame rendering characteristics of the secondary stream, resulting in transmission difficulties and delays.

Method used

An audio and video wireless optimization transmission system is adopted. The audio and video auxiliary streams are split into a base layer and an enhancement layer through the auxiliary stream receiving module. A heartbeat detection function is deployed, a heartbeat timeout threshold is set, and the bandwidth allocation is dynamically adjusted according to bandwidth prediction and priority. Key frames are transmitted using the mainstream channel to achieve image compositing and bandwidth optimization.

Benefits of technology

It solves the problem of establishing auxiliary stream transmission channels in network address translation environments, improves bandwidth utilization and transmission reliability, ensures the stability and fast rendering of auxiliary stream video in complex network environments, and avoids first-frame stuttering and black screen.

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Abstract

The application relates to the technical field of audio and video transmission, and discloses an audio and video wireless optimization transmission system and method, which comprise an auxiliary stream receiving module, an optimization transmission module, a bandwidth allocation module, a picture synthesis module and an auxiliary stream receiving module, are used for receiving audio and video main streams and auxiliary streams shared by multiple sharing persons; the optimization transmission module splits the received multiple audio and video auxiliary streams into a base layer and an enhancement layer, deploys a heartbeat detection function in an auxiliary stream channel, sets a heartbeat timeout threshold value as T, compares the heartbeat packet time interval obtained with the set heartbeat timeout threshold value, and executes a picture synthesis scheme according to the comparison result. Through the setting of the detection function for monitoring the heartbeat packet of the auxiliary stream channel and the introduction of dynamic threshold value adjustment, auxiliary stream transmission abnormal conditions can be accurately and timely detected, the auxiliary stream key frame is split into the base layer and the enhancement layer, and the base layer is preferentially transmitted according to a bandwidth prediction result.
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