Secure video transmission method and device based on scalable video coding

By adopting scalable video encoding technology in cellular networks, video files are hierarchically cached and non-orthogonal transmission, the problems of low video transmission efficiency and insufficient security in wireless networks are solved, efficient and secure video file delivery is achieved, and user experience is improved.

CN120358365BActive Publication Date: 2025-08-22XIAN UNIV OF POSTS & TELECOMM
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Patent Information

Application Number
CN202510837809.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-06-23
Publication Date
2025-08-22
Estimated Expiration
2045-06-23

AI Technical Summary

Technical Problem

In wireless networks, repeated video file transmission leads to increased network pressure and unverified illegal users lead to security risks in the transmission process. How to ensure the efficient and secure delivery of video files becomes a challenge.

Method used

The extensible video encoding technology is adopted to cache video files in layers, and the basic layer and enhancement layer files are sent through the macro base station and the micro base station respectively. The enhancement layer files are superimposed using non-orthogonal transmission methods, and the transmission is combined with orthogonal channel resources to adapt to the dynamic network state and meet the diverse needs of users.

Benefits of technology

It improves video transmission efficiency, meets users' diverse viewing needs, alleviates network congestion, improves user experience quality, and ensures the secure transmission of video files in the presence of eavesdroppers.

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Abstract

The present invention provides a secure video transmission method and device based on scalable video coding, relating to the field of video transmission technology. The video transmission method includes: according to a preset caching strategy, layered caching of the base layer file and multiple enhancement layer files of at least a portion of the video files in a content server in a target macro base station and a target micro base station in a preset cellular network; determining whether the target video file is included in at least a portion of the video files based on a video acquisition request sent by a target user; if the target video file is included in at least a portion of the video files, sending the base layer file of the target video file to the target user via the target macro base station, and superimposing at least one enhancement layer file of the target video file using a non-orthogonal transmission method via the target micro base station before sending the superimposed file to the target user. This application can improve video transmission efficiency.
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