Split Bearer Scheduling Via Sidelink Relay for Adaptive Uplink Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing uplink transmissions over split bearers in multi-path operations, particularly in sidelink relay scenarios, where channel conditions and buffer thresholds are not adequately considered for optimal data distribution.
Innovation Solution
A wireless transmit/receive unit (WTRU) determines transmission distribution percentages based on channel conditions and buffer levels for split bearers, using configuration information that includes radio quality thresholds and a split buffer threshold, and updates these parameters dynamically to optimize uplink data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If static carrier configuration is used for relay WTRU, then device complexity is reduced, but adaptability to changing channel conditions deteriorates
Solution Approach 1:
The patent implements dynamic carrier selection and configuration for relay WTRUs, allowing the network to dynamically allocate carriers based on real-time channel conditions, buffer status, and traffic requirements. This replaces static carrier configuration with dynamic adaptation mechanisms that can respond to changing network conditions.
Solution Approach 2:
The patent changes operational parameters such as carrier frequency, transmission power, and data distribution ratios across multiple carriers based on measured channel conditions and buffer levels. This allows the system to optimize performance by adjusting parameters rather than being fixed to a single carrier configuration.
2Productivity
If single carrier operation is used, then device complexity is reduced, but productivity of uplink transmission deteriorates
Solution Approach 1:
The patent merges multiple carriers into a unified communication system for relay WTRUs, allowing simultaneous utilization of multiple carriers for uplink transmission. This combining approach increases total throughput and transmission efficiency by aggregating capacity from multiple frequency resources.
Solution Approach 2:
The patent segments uplink data transmission across multiple carriers, dividing the total data flow into portions that can be transmitted simultaneously over different carriers. This segmentation enables parallel transmission and improves overall productivity while managing complexity through structured division of tasks.
3Adaptability or versatility
If transmission distribution is fixed, then ease of operation is improved, but adaptability to buffer status and channel conditions deteriorates
Solution Approach 1:
The patent implements feedback mechanisms where the relay WTRU reports buffer status and channel conditions to the network, which then adjusts transmission distribution parameters accordingly. This closed-loop feedback system enables automatic adaptation to changing conditions without requiring complex manual scheduling.
Solution Approach 2:
The system performs self-optimization by automatically adjusting transmission parameters based on monitored buffer levels and channel quality. The relay WTRU autonomously manages its own transmission distribution without requiring complex external control, reducing operational complexity while maintaining high adaptability.
4Reliability
If no channel condition monitoring is performed, then device complexity is reduced, but reliability of uplink transmission deteriorates
Solution Approach 1:
The patent performs preliminary channel condition measurements and buffer status assessments before initiating uplink transmission. This advance preparation allows the system to select optimal carriers and distribution parameters in advance, improving transmission reliability by avoiding poor channel conditions.
Solution Approach 2:
The patent replaces complex mechanical scheduling mechanisms with automated algorithms that use channel condition metrics and buffer status information to determine transmission parameters. This substitution reduces the complexity of manual control while improving reliability through data-driven decision making.
Data Source
AI summary
A WTRU may receive configuration information associated with uplink transmissions over a split bearer. The split bearer may be associated with a first path and a second path. The configuration information may include radio quality thresholds associated with channel conditions over the first path and/or the second path. The WTRU may determine a (e.g., dynamic) transmission distribution percentage associated with UL transmissions over the first path and/or the second path based on at least the configuration information, channel conditions associated with the first path, and/or channel conditions associated with the second path. The WTRU may send uplink data associated with the split bearer based on the determined transmission distribution percentage. The WTRU may send an indication to the network associated with the split bearer. The WTRU may update the split buffer threshold based on channel conditions (e.g., CBR, RSRP, etc.) of the first path and/or the second path.