Network Device Video Buffer Time Scheduling During Handover
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Solution Overview
Problem
Current wireless network technologies face challenges in providing a smooth and high-quality mobile video experience due to the lack of continuity in video data scheduling policies during handovers between cells, leading to video freezing and deteriorated user experience.
Innovation Solution
A video data processing method that determines the buffer time and scheduling priority of video services based on video bitrate and played duration, allowing network devices to dynamically update scheduling policies and transmit buffer time and bitrate during handovers to ensure consistent video scheduling across cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If video data scheduling is performed independently in each cell without inter-cell coordination, then device complexity is reduced, but video playing smoothness deteriorates due to policy discontinuity during handovers
Solution Approach 1:
The patent introduces buffer time as an intermediary parameter that mediates between independent cell scheduling decisions. The source cell calculates and transmits buffer time to the target cell during handover, enabling the target cell to adjust its scheduling policy to maintain video smoothness without requiring complex inter-cell coordination mechanisms
Solution Approach 2:
The source cell performs preliminary calculation of the buffer time before handover occurs and transmits this information to the target cell in advance. This preliminary action allows the target cell to prepare appropriate scheduling policies before the handover completes, preventing video freezing without requiring real-time complex coordination
2Reliability
If scheduling priority is increased during handover to ensure video continuity, then video playing smoothness is improved, but network resource allocation efficiency deteriorates due to excessive resource allocation
Solution Approach 1:
The patent implements dynamic scheduling priority adjustment based on the transmitted buffer time parameter. The target cell dynamically adjusts the scheduling priority of video data according to the actual buffer status, allocating more resources when buffer time is low and fewer resources when buffer time is sufficient, thereby maintaining video smoothness while optimizing network resource allocation efficiency
Data Source
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AI summary
Embodiments of the present invention disclose a video data processing method and a device. The method includes: determining, by a network device, a video bitrate, a volume of scheduled video data, and video-played duration of a video service of a terminal; determining, by the network device, a buffer time of the video service of the terminal based on the video bitrate, the volume of scheduled video data, and the video-played duration; and performing, by the network device, video data scheduling on the terminal based on the buffer time. According to the embodiments of the present invention, efficiency of video data scheduling by the network device and smoothness of video playing of the terminal are improved.