Video Bursting Based on Mobile Device Path
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Solution Overview
Problem
Wireless communication networks face challenges in delivering high-quality video content to mobile devices due to varying wireless coverage, leading to degraded or interrupted video playback, especially in areas of poor signal strength or mobility.
Innovation Solution
A method that determines a projected geographic path of a mobile communication device and schedules the transfer of video reference frames based on this path to ensure delivery during high-quality coverage areas, while continuously transmitting update frames without regard to the path, allowing for efficient buffering and sequencing to maintain playback quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If video content is transferred continuously to mobile devices, then video playback can be maintained, but video quality degrades in areas of poor wireless coverage due to insufficient bandwidth
Solution Approach 1:
The patent segments video data into two distinct types: reference frames (I-frames) and update frames (P-frames or B-frames). Reference frames contain complete video information and are transferred selectively based on wireless coverage conditions, while update frames contain only differential information and are transferred continuously. This segmentation allows the system to adapt transfer strategies to different network conditions, maintaining playback continuity while preserving video quality when possible.
Solution Approach 2:
The patent implements preliminary buffering of reference frames at the mobile device before playback. By determining the projected geographic path and identifying areas of good wireless coverage in advance, the system pre-transfers and buffers reference frames during high-quality coverage periods. This preliminary action ensures that sufficient reference data is available before the device enters poor coverage areas, maintaining both playback continuity and video quality.
2Manufacturing precision
If reference frames are transferred during poor wireless coverage, then video quality can be maintained, but network bandwidth is wasted when coverage is insufficient
Solution Approach 1:
The patent implements dynamic transfer scheduling for reference frames based on real-time wireless coverage conditions and projected geographic path analysis. The system continuously monitors signal strength and determines when the mobile device is in or approaching areas of good coverage, then selectively transfers reference frames during these optimal periods. This dynamic approach ensures reference frames are transferred only when network resources are available, avoiding bandwidth waste in poor coverage areas while maintaining video quality.
Solution Approach 2:
The patent changes the transfer parameters of video data based on wireless coverage conditions. In areas of good coverage, the system transfers complete reference frames with high data rates. In areas of poor coverage, it switches to transferring only compact update frames with lower data rates. This parameter change in transfer strategy allows the system to optimize bandwidth utilization while adapting to varying network conditions along the device's projected path.
3Reliability
If update frames are transferred continuously regardless of path, then playback continuity is maintained, but larger reference frames are unnecessarily transmitted during poor coverage conditions
Solution Approach 1:
The patent segments video data into reference frames and update frames with distinct transfer strategies. Update frames, which contain only differential information and are smaller in size, are transferred continuously regardless of wireless coverage conditions to maintain playback continuity. Reference frames, which are larger and contain complete video information, are transferred selectively based on coverage quality. This segmentation allows the system to maintain continuous playback with minimal data while avoiding unnecessary large transfers during poor coverage.
Solution Approach 2:
The patent applies partial action by transferring only the necessary update frames continuously, rather than transferring complete reference frames at all times. This partial transfer approach provides just enough data to maintain playback continuity without the excessive data volume that would result from transferring full reference frames during every interval, especially in poor coverage conditions.
Data Source
AI summary
What is disclosed is a method of operating a video system. The method includes determining a projected geographic path of a mobile communication device and determining a transfer schedule for reference frames of a video based on the projected geographic path. The method also includes transferring the reference frames of the video based on the transfer schedule for delivery to the mobile communication device over a wireless communication system and transferring update frames of the video for delivery to the mobile communication device over the wireless communication system without regard to the projected geographic path.