Application Layer Transmission Control via QoS Metrics
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Solution Overview
Problem
Existing vehicular communication systems, particularly in 5G NR technology, face challenges in efficiently managing transmission control in application layers, especially in scenarios with varying radio bearer quality metrics, which can lead to congestion and message loss.
Innovation Solution
The implementation of transmission control in the application layer of user equipment (UE) based on quality of service (QoS) indications received from a lower layer, such as an access layer, allows for dynamic adjustment of transmission rates and ranges in vehicular communications, thereby optimizing communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission control is not implemented in the application layer, then the system complexity remains low, but congestion and message loss occur in vehicular communications
Solution Approach 1:
The patent divides the transmission control function into separate modules within the application layer, including QoS parameter extraction modules, transmission rate control modules, and transmission range control modules. Each module handles specific aspects of transmission control independently, improving reliability while managing complexity through functional segmentation.
Solution Approach 2:
The patent implements preliminary action by proactively adjusting transmission rates and ranges based on predicted QoS conditions before congestion or message loss occurs. The application layer receives QoS indications from the access layer and preemptively modifies transmission parameters to prevent degradation of communication reliability.
2Productivity
If transmission rate is increased to improve communication efficiency, then productivity increases, but message loss increases when radio bearer quality deteriorates
Solution Approach 1:
The patent implements dynamic transmission control where the application layer continuously adjusts transmission rates and ranges based on real-time QoS indications from the access layer. When radio bearer quality is good, transmission rate increases to improve efficiency; when quality deteriorates, the rate decreases to prevent message loss, creating a dynamic adaptation mechanism.
Solution Approach 2:
The patent establishes a feedback loop where the access layer provides QoS indications (such as channel quality, interference levels, and transmission success rates) to the application layer. The application layer uses this feedback to continuously optimize transmission parameters, ensuring high productivity when conditions permit while maintaining reliability when conditions deteriorate.
3Area of stationary object
If transmission range is expanded to improve coverage, then the area of coverage increases, but congestion increases in dense vehicular environments
Solution Approach 1:
The patent implements dynamic transmission range control where the application layer adjusts the coverage area based on QoS indications and environmental conditions. In sparse vehicular environments, the transmission range expands to improve coverage and connectivity. In dense environments with high interference and congestion risks, the range contracts to maintain communication efficiency and reduce congestion.
Solution Approach 2:
The patent changes transmission parameters (power level, bandwidth, modulation scheme) dynamically based on QoS conditions to optimize the coverage area. When radio bearer quality is high, transmission power and range increase to expand coverage. When quality deteriorates or congestion is detected, parameters are adjusted to reduce range and avoid congestion, maintaining optimal productivity.
Data Source
AI summary
Methods, apparatuses, and computer-readable mediums for wireless communication are disclosed by the present disclosure. In an aspect, an application layer in a user equipment (UE) receives, from an access layer in the UE, a quality of service (QoS) indication comprising a metric that represents a quality of one or more radio bearers used for a vehicular communication with one or more other UEs. The application layer performs a transmission control over the vehicular communication based on the QoS indication.