Multipath Sidelink Relaying with Adaptive Congestion Parameters
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Solution Overview
Problem
Existing congestion control mechanisms in multipath sidelink relaying are inadequate in managing quality deterioration on wireless links, leading to inefficient data transmission.
Innovation Solution
Implementing a method and apparatus in a WTRU to transmit data using different sets of congestion control parameters based on link quality, allowing for adaptive adjustment of data transmission through sidelinks to relay WTRUs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single set of congestion control parameters is used for all data transmissions, then the system is simple to operate, but data transmission efficiency deteriorates when link quality changes
Solution Approach 1:
The patent implements dynamic congestion control by switching between different parameter sets based on link quality conditions. The WTRU monitors link quality and dynamically selects between a first set of congestion control parameters for normal conditions and a second set for deteriorated conditions, making the system adaptive rather than static.
Solution Approach 2:
The patent changes congestion control parameters based on link quality state. When link quality deteriorates below a threshold, the system transitions from using a first set of parameters (with higher transmission rates) to a second set of parameters (with lower transmission rates), directly modifying operational parameters to adapt to changing conditions.
2Productivity
If congestion control parameters are adjusted frequently to respond to link quality changes, then data transmission efficiency is improved, but system stability deteriorates due to excessive parameter switching
Solution Approach 1:
The system establishes a threshold for link quality deterioration in advance. Instead of reacting to every minor fluctuation, the parameter switching is triggered only when link quality falls below the predetermined threshold, preventing unnecessary frequent switching while still responding to significant quality changes.
3Adaptability or versatility
If different congestion control parameters are used for different data transmissions, then adaptability to link quality changes is improved, but ease of operation deteriorates
Solution Approach 1:
The WTRU autonomously monitors its own link quality and automatically selects the appropriate congestion control parameter set without external intervention. The system performs self-diagnosis of link quality and self-adjustment of parameters, eliminating the need for complex manual configuration or external control.
Data Source
AI summary
Procedures, methods, architectures, apparatuses, systems, devices, and computer program products directed to congestion control in multipath sidelink relaying are described herein. According to an embodiment, a method implemented in a wireless transmit/receive unit (WTRU) includes transmitting data for a split bearer associated with a link to a base station and a sidelink to a relay WTRU. The data may comprise first data that may be transmitted over the sidelink using a first set of congestion control parameters. The method may include determining that a quality deterioration occurred on the link to the base station. The method may include transmitting further data for the split bearer. In various embodiments, the further data may include second data that may be transmitted via the sidelink using a second set of congestion control parameters based on the determining that a quality deterioration occurred on the link to the base station.