Prioritized Scheduling Request Transmission Over PUSCH
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Solution Overview
Problem
In wireless communication systems, existing methods fail to prioritize Scheduling Requests (SR) effectively over Physical Uplink Shared Channel (PUSCH) transmissions, leading to potential delays and inefficiencies in resource management, particularly in scenarios requiring low latency like ultra-reliable low-latency communications (URLLC).
Innovation Solution
A method where User Equipment (UE) configures a logical channel with prioritized SR transmission over any PUSCH transmission, allowing SR to be triggered and transmitted regardless of overlap with PUSCH resources, based on specific logical channel configurations such as priority or identity thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If SR transmission is prioritized over PUSCH transmission regardless of overlap, then SR transmission delay is reduced and low-latency applications are supported, but resource collision and waste increase
Solution Approach 1:
The patent applies local quality by differentiating SR transmission handling based on logical channel priority. High-priority SR transmissions (meeting threshold criteria) are granted immediate transmission rights even when overlapping with PUSCH, while lower-priority SR transmissions follow conventional comparison-based scheduling. This localized application of priority rules optimizes time-critical transmissions without causing unnecessary resource waste across all SR types.
Solution Approach 2:
The patent changes the scheduling parameter from a uniform comparison-based approach to a threshold-based priority approach. By introducing logical channel priority thresholds, the system transforms the scheduling decision parameter, allowing high-priority SR transmissions to bypass conventional resource collision avoidance mechanisms. This parameter change enables reduced SR transmission delay for critical communications while maintaining resource efficiency for lower-priority traffic.
2Productivity
If SR transmission is prioritized over PUSCH transmission, then resource management efficiency is enhanced, but device complexity increases due to additional configuration and comparison logic
Solution Approach 1:
The patent applies preliminary action by pre-configuring logical channel priority thresholds before SR transmission occurs. The network pre-establishes priority rules and threshold values, allowing the UE to make straightforward scheduling decisions without complex real-time comparisons. This preliminary configuration simplifies the actual transmission decision process while maintaining high resource management efficiency through pre-planned priority handling.
3Device complexity
If conventional SR scheduling is used without priority configuration, then device complexity is reduced, but SR transmission delay increases particularly for low-latency applications
Solution Approach 1:
The patent segments SR transmission handling into two distinct paths: high-priority SR transmissions that meet threshold criteria and receive immediate transmission rights, and lower-priority SR transmissions that follow conventional comparison-based scheduling. This segmentation allows the system to reduce delay for critical applications without unnecessarily increasing complexity for all SR transmissions, applying enhanced handling only where needed.
Data Source
AI summary
The present invention relates to a method of performing a Scheduling Request (SR) by a User Equipment (UE) in a wireless communication system. In particular, the method includes the steps of: configuring a logical channel, wherein a SR transmission of the logical channel is prioritized over any Physical Uplink Shared Channel (PUSCH) transmission; and based on the SR being triggered due to the logical channel, transmitting the SR to a network.