Dual-Path Communication System for Latency Control
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Solution Overview
Problem
Current wireless communication systems for video transmission, such as from gaming apparatus to head-mounted displays, fail to adequately select communication paths based on latency, leading to increased discomfort for players due to high system latency.
Innovation Solution
A communication system with dual transmission and reception sections, where one section operates at a higher maximum transmission rate but with lower compression ratio, and the other at lower rate but higher compression ratio, allowing dynamic path selection based on latency, with a control mechanism to switch between them based on latency thresholds and communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If transmission by the first transmission section with higher maximum possible transmission rate is used, then transmission speed is improved, but system latency increases due to lower compression ratio
Solution Approach 1:
The system dynamically switches between the first transmission section (higher rate, lower compression) and the second transmission section (lower rate, higher compression) based on real-time latency measurements. This dynamic adaptation allows the system to optimize between transmission speed and latency by selecting the appropriate transmission path according to current communication conditions.
Solution Approach 2:
The system changes the compression ratio parameter depending on which transmission section is used. The first transmission section uses a lower compression ratio to maintain higher transmission speed, while the second transmission section uses a higher compression ratio to reduce data size and latency. This parameter adjustment resolves the contradiction between speed and latency.
2Loss of time
If transmission by the second transmission section with higher compression ratio is used, then system latency is reduced, but transmission rate decreases
Solution Approach 1:
The system dynamically selects between transmission sections based on latency requirements. When low latency is critical, the system switches to the second transmission section with higher compression ratio, accepting the trade-off of lower transmission rate. This dynamic selection resolves the contradiction by adapting to real-time performance requirements.
Solution Approach 2:
The compression ratio parameter is adjusted based on the selected transmission section. The second transmission section operates with a higher compression ratio to minimize data transmission time and latency, while the first transmission section uses a lower compression ratio to maintain higher throughput. This parameter change resolves the speed-latency trade-off.
3Loss of time
If dynamic path selection based on latency is implemented, then system latency is optimized, but device complexity increases due to control mechanism
Solution Approach 1:
The system implements a feedback mechanism where the control section monitors the actual latency of transmitted video signals and uses this information to dynamically select the appropriate transmission section. This feedback-based control optimizes latency by continuously adapting to changing communication conditions, resolving the contradiction between latency optimization and system complexity.
Solution Approach 2:
The control section automatically monitors latency and selects transmission sections without requiring external intervention. The system self-regulates by measuring its own performance and making autonomous decisions about which transmission path to use, reducing the need for complex external control mechanisms while optimizing latency.
Data Source
AI summary
Provided are a communication system, a transmission apparatus, a reception apparatus, a communication system control method, and a program that permit selection of an appropriate communication path in accordance with the amount of time until data generated by the transmission apparatus is rendered available for use by the reception apparatus. A first transmission section sends encoded data to a first reception section. A second transmission section sends encoded data to a second reception section. The first transmission section has a higher maximum possible transmission rate than the second transmission section. A pre-transmission process execution section encodes data at a higher compression ratio at the time of transmission by the second transmission section than the compression ratio at the time of transmission by the first transmission section. A transmission control section controls which data, the data received by the first reception section or the data received by the second reception section, is used by an HMD based on the amount of time from generation of data to when the data is rendered available for use by the HMD.