Video Streaming Frame Prioritization in Transmission Buffers

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Solution Overview

Problem

Current wireless communication systems face challenges in prioritizing recovery frames over inter frames within the same Quality-of-Service Class Identifier (QCI) bearer during video streaming sessions, leading to latency and delays in rendering error-free frames.

Innovation Solution

A method and device configuration that communicate an indication from the upper communication layer to the lower layer to prioritize recovery frames over inter frames, placing them ahead in the transmission buffer and transmitting packets accordingly, ensuring timely delivery of critical recovery frames.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If recovery frames and inter frames are transmitted with equal priority in the same QCI bearer, then the transmission buffer management is simple, but latency occurs in rendering error-free frames due to delayed recovery frame transmission

Engineering Contradiction:

Improvelatency in rendering error-free framesVSAvoidtransmission buffer management complexity

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The patent segments the transmission buffer into separate queues: a first queue for recovery frames and a second queue for inter frames. This segmentation allows independent management and prioritization of different frame types, enabling recovery frames to be transmitted with higher priority without complicating the overall buffer management system.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by assigning different transmission priorities to different portions of the buffer. Specifically, recovery frames in the first queue are given higher priority than inter frames in the second queue, allowing critical error-recovery data to be transmitted promptly while maintaining simple overall buffer management.

Inventive Principle:

Principle #3Local quality

2Reliability

If recovery frames are prioritized over inter frames in the transmission buffer, then latency is reduced and error-free rendering is improved, but the transmission buffer management becomes more complex

Engineering Contradiction:

Improveerror-free frame renderingVSAvoidtransmission buffer management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The transmission buffer is segmented into distinct queues for recovery frames and inter frames, enabling reliable error-free rendering by ensuring recovery frames are transmitted first. This segmentation maintains manageable complexity through clear queue separation and standard prioritization mechanisms.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different quality levels are applied locally within the buffer by prioritizing recovery frames over inter frames. This ensures high reliability for error recovery while maintaining simple overall buffer management through standard priority-based queuing mechanisms.

Inventive Principle:

Principle #3Local quality

3Ease of operation

If all frames in the same QCI bearer are transmitted in arrival order, then the transmission buffer management is straightforward, but the video streaming quality deteriorates due to delayed recovery frame delivery

Engineering Contradiction:

Improvetransmission buffer management easeVSAvoidvideo streaming quality

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The buffer is segmented into priority-based queues that maintain ease of operation through standard queuing mechanisms while improving video streaming quality by ensuring recovery frames are delivered before inter frames, even though they may arrive in different orders.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Local quality improvement is achieved by applying priority-based transmission to recovery frames within the buffer, ensuring high video streaming quality through timely error recovery while maintaining straightforward buffer management through clear queue separation.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11546396B1Prioritization of frames associated with recovery for video streaming session

Publication Date: 2023.01.03 QUALCOMM INC

AI summary

Disclosed are techniques for communication. In an aspect, a communications devices communicates, from an upper communication layer (e.g., application layer) to a lower communication layer (e.g., transport layer), indication(s) to prioritize certain frames (e.g., recovery frames and/or feedback frames) over other frames (e.g., Inter frames) associated with the same QCI bearer for a video streaming session. The lower communication layer may place the prioritized frames ahead of the non-prioritized frames in a lower layer transmission buffer based on the indication. The communications device may transmit one or more packets carrying the first set of frames before one or more packets carrying the second set of frames based on the first set of frames being placed ahead of the second set of frames in the lower layer transmission buffer.