Low Latency Error Channel for Video Transmission
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Solution Overview
Problem
In video transmission systems, network latency in the wireless section can delay error recovery, leading to a prolonged period where the image quality of decoded images is degraded due to errors occurring on the reception side, especially in high-capacity use cases like eMBB, where the latency requirement is higher than in low-latency use cases like URLLC.
Innovation Solution
An information processing apparatus and method that utilize a second wireless channel with lower latency than the primary channel for transmitting error information from a reception apparatus back to the transmission source, enabling timely encoding control to prevent error propagation in the video transmission system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a first wireless channel with high data capacity is used for transmitting encoded video data, then the data transmission capability is improved, but the latency increases causing delayed error recovery
Solution Approach 1:
The patent segments the communication function into two separate wireless channels: the first wireless channel is dedicated to transmitting encoded video data with high capacity, while the second wireless channel is specifically used for transmitting error information with low latency. This segmentation allows each channel to be optimized for its specific purpose, resolving the contradiction between data capacity and error recovery speed.
Solution Approach 2:
The patent introduces a second wireless channel as an intermediary mechanism for error information transmission. This intermediary channel acts as a separate communication path that does not interfere with the primary video data transmission, enabling fast error feedback without compromising the data capacity of the main channel.
2Device complexity
If error information is transmitted via the same first wireless channel as video data, then the system complexity is reduced, but the error recovery speed is delayed due to channel latency
Solution Approach 1:
The patent divides the communication infrastructure into two distinct wireless channels with different characteristics. The first channel handles video data while the second channel handles error information, allowing each to be optimized independently. This segmentation resolves the contradiction by accepting increased system complexity in exchange for significantly improved error recovery speed.
Solution Approach 2:
The patent adds a new dimension to the communication system by introducing a separate transmission channel dimension. Instead of using the same channel for both data and error feedback, the system transitions to a multi-channel architecture where error information travels through a dedicated low-latency path, fundamentally changing the error recovery timeline.
Data Source
AI summary
The present disclosure relates to an information processing apparatus and an information processing method that enable suppression of an increase in time period in which image quality of a decoded image is degraded due to an error occurring on a reception side when encoded data of a video is transmitted.Error information that is transmitted, via a second wireless channel, from a reception apparatus that receives encoded data of a video transmitted via a first wireless channel is acquired, the second wireless channel enabling transmission involving lower latency than the first wireless channel, and encoding of the video is controlled on the basis of the error information acquired. The present disclosure can be applied to, for example, an information processing apparatus, an encoding apparatus, a decoding apparatus, electronic equipment, an information processing method, a program, or the like.