Upload ID Sequence Management for Mobile Broadcast Segment Loss
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Solution Overview
Problem
Mobile broadcasting systems face challenges in delivering high-quality video streams due to unreliable and untimely data transmission in lossy networks, leading to issues with lost and out-of-order segments that disrupt the viewing experience.
Innovation Solution
The system uses unique metadata, known as Upload IDs, to identify and manage video segments, ensuring they are received and broadcast in the correct sequence, and employs a Reordering Buffer to handle out-of-order segments, preventing disruptions and allowing late arrivals to be integrated without halting playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If adaptive streaming technologies are used to deliver video segments over networks, then the system can adapt to varying network characteristics and platforms, but the system becomes vulnerable to lost and out-of-order segments in lossy networks
Solution Approach 1:
The patent applies preliminary action by pre-assigning sequential Upload IDs to video segments at the source before transmission. This allows the receiving system to detect lost or out-of-order segments by checking for gaps or mismatches in the sequence, enabling proactive identification and handling of transmission issues before they disrupt playback.
Solution Approach 2:
The patent implements feedback mechanisms where the system monitors the received Upload ID sequences and provides information about lost or out-of-order segments. This feedback enables the system to request retransmission of missing segments or adjust playback accordingly, maintaining reliability while preserving adaptability to different network conditions.
2Speed
If segments are transmitted in real-time over lossy networks, then live broadcasting capability is achieved, but segment loss and out-of-order delivery disrupt the viewing experience
Solution Approach 1:
By pre-numbering segments with Upload IDs at the source, the system enables rapid detection of transmission errors without requiring complex verification protocols during real-time playback. This maintains speed while improving reliability through efficient error detection and recovery mechanisms.
Solution Approach 2:
The patent applies discarding and recovering by allowing the system to identify and discard corrupted or out-of-order segments based on Upload ID verification, while simultaneously requesting or retrieving replacement segments. This ensures that real-time playback continues smoothly with minimal disruption, maintaining both speed and reliability.
3Reliability
If Upload IDs are assigned to all segments for sequence verification, then lost and out-of-order segments can be detected, but system complexity increases due to additional metadata management
Solution Approach 1:
The Upload ID serves multiple functions simultaneously: it acts as a sequence number for ordering segments, an identifier for detecting lost segments, and a verification token for ensuring authentic delivery. This multi-functionality reduces the need for separate metadata fields and complex verification protocols, thereby reducing overall system complexity while maintaining high reliability.
4Loss of substance
If late arriving segments are accepted and integrated, then no video data is lost, but playback may be interrupted or delayed
Solution Approach 1:
By pre-assigning Upload IDs and establishing sequence expectations before playback, the system can quickly determine whether late-arriving segments are usable or would cause disruption. This allows for rapid decision-making about segment integration, minimizing playback delays while preventing data loss where possible.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting playback timing and segment integration decisions based on the Upload ID sequence verification. When late segments are detected, the system can modify playback parameters such as buffering duration or segment insertion timing to minimize disruption, balancing data completeness with playback continuity.
Data Source
AI summary
Systems and Algorithms for a network-loss tolerant, mobile broadcasting system that reliably and efficiently address unreliable or untimely transmission of segments. By associating a unique metadata to each segment (an Upload ID), segments are identified by the order in which they were captured at their source. Upload IDs allow for methods to proactively address lost or out-of-order segments without disturbing a broadcast. Late arriving segments are preserved for broadcast in the correct sequence by the invention's novel uses of Upload IDs.