Video-Aware Wireless Communication Transport Block Prioritization
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Solution Overview
Problem
Current wireless communication systems, particularly in LTE and NR technologies, face challenges in optimizing the quality of experience for streaming video content due to the lack of effective methods to differentiate and prioritize packets based on their impact on video quality, leading to inefficient resource allocation and potential interruptions in video transmission.
Innovation Solution
A method and apparatus for classifying packets of streaming video content based on video characteristics that affect quality of experience, assigning them to different data radio bearers, and generating transport blocks with varying redundancy and quality of service levels to ensure differential protection and prioritization during transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all video packets are transmitted with equal priority and protection levels, then the transmission process is simple and resource allocation is uniform, but the quality of experience for critical video packets cannot be ensured and transmission errors have significant impact on video quality
Solution Approach 1:
The patent segments video packets into different priority groups based on their impact on quality of experience. Critical packets (e.g., I-frames, key data) are separated from less critical packets (e.g., P-frames, non-key data) and assigned to different transport blocks with differentiated protection levels. This segmentation enables selective prioritization without requiring complete reorganization of the transmission system.
Solution Approach 2:
The patent applies local quality by providing differentiated protection and redundancy only to specific critical packets that have high impact on quality of experience, rather than uniformly protecting all packets. Critical packets receive enhanced error protection and higher priority scheduling, while less critical packets use standard protection mechanisms, optimizing resource allocation based on local packet characteristics.
2Reliability
If multiple transport blocks with different quality of service levels are generated, then critical video packets receive differential protection and prioritization, but the complexity of resource allocation and transmission management increases
Solution Approach 1:
The patent implements dynamic transport block management where the number, size, and composition of transport blocks are adjusted based on real-time video content characteristics and channel conditions. The system dynamically determines which packets require critical protection and groups them into appropriate transport blocks, allowing flexible adaptation without fixed rigid structures.
Solution Approach 2:
The patent changes key parameters such as transport block size, redundancy level, and priority assignment based on video packet characteristics. Critical packets are assigned to transport blocks with higher redundancy and priority, while less critical packets use standard parameters. This parameter differentiation enables selective protection while maintaining manageable complexity through rule-based parameter selection.
3Reliability
If uniform error protection is applied to all video packets, then the transmission system is simple to manage, but transmission errors significantly impact overall video quality without selective recovery capability
Solution Approach 1:
The patent applies preliminary action by pre-assigning error protection levels and priority markers to video packets before transmission based on their type and importance. Critical packets are pre-marked with higher protection requirements and grouped into dedicated transport blocks with enhanced forward error correction. This preliminary classification enables efficient error recovery without requiring complex real-time analysis during transmission.
Data Source
AI summary
Various aspects of the present disclosure generally relate to video aware wireless communication. In some aspects, a communication device may classify a set of packets of streaming video content based at least in part on one or more video characteristics; assign the set of packets to a plurality of data radio bearers based on the effect of the set of packets on the quality of experience; generate a plurality of transport blocks for each of the plurality of DRBs; and provide the plurality of transport blocks for transmission. Numerous other aspects are provided.