Simultaneous Uplink Sidelink Prioritization Thresholds
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Solution Overview
Problem
Existing mobile communication systems struggle to efficiently manage simultaneous uplink and sidelink operations, leading to potential collisions and prioritization challenges in wireless transmit/receive units (WTRUs).
Innovation Solution
A wireless transmit/receive unit (WTRU) is configured to perform simultaneous uplink (UL) and sidelink (SL) operations by prioritizing transmissions based on predefined thresholds and rules, allowing for concurrent operation of UL and SL resources during the same set of OFDM symbols or slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If simultaneous UL and SL operations are performed without prioritization rules, then transmission opportunities increase, but collisions and interference between UL and SL transmissions worsen
Solution Approach 1:
The patent applies preliminary action by establishing prioritization rules and thresholds before simultaneous UL and SL operations occur. The WTRU pre-configures with prioritization thresholds and rules that determine which transmission (UL or SL) takes precedence when resources overlap, enabling collision avoidance before conflicts arise during concurrent operations.
2Reliability
If prioritization rules are implemented for UL and SL transmissions, then collision avoidance improves, but transmission delay increases due to evaluation overhead
Solution Approach 1:
The patent applies dynamics by making the prioritization evaluation adaptive and flexible. The WTRU dynamically adjusts transmission decisions based on real-time conditions such as resource availability, channel status, and configured thresholds. This dynamic approach allows the system to minimize evaluation overhead by only performing prioritization checks when necessary (e.g., when UL and SL resources overlap), thereby reducing unnecessary delays while maintaining collision avoidance.
3Measurement precision
If the WTRU evaluates multiple prioritization thresholds and rules for each transmission decision, then transmission prioritization accuracy improves, but processing complexity increases
Solution Approach 1:
The patent applies local quality by configuring different prioritization thresholds and rules for different logical channels and transmission types. Instead of applying a single complex prioritization algorithm uniformly, the system assigns specific prioritization characteristics to different UL and SL logical channels based on their QoS requirements. This allows the WTRU to evaluate only the relevant thresholds for each specific transmission decision, reducing processing complexity while maintaining accurate prioritization.
Data Source
AI summary
An apparatus may be configured to determine whether to prioritize a sidelink (SL) logical channel group (LCG) based on an SL prioritization threshold and a UL prioritization threshold, on a condition that a UL prioritization threshold is configured. The apparatus may be configured to determine whether a prioritization value associated with the SL LCG is lower than the SL prioritization threshold. The apparatus may be configured to determine (e.g., at least) whether an uplink (UL) LCG has a prioritization value that is equal to or higher than the UL prioritization threshold. The apparatus may be configured to determine whether to prioritize SL buffer status reporting (BSR) based on a size of a UL grant and the determination of whether to prioritize the SL LCG. The apparatus may be configured to report a buffer status based on the determination of whether to prioritize the SL BSR.