Uplink Scheduling Puncturing Optimization
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Solution Overview
Problem
In wireless communication systems, the existing solutions for uplink transmission in unlicensed frequency bands result in a low data transmission rate due to the need for puncturing operations, which increase system overhead and reduce channel occupancy probability, especially when new uplink scheduled UEs appear.
Innovation Solution
A method and device for dynamically determining whether to apply puncturing based on uplink scheduling criteria, including identifying UEs that will not be interfered by a reference UE, and adjusting signaling to minimize puncturing operations, thereby optimizing data transmission rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If puncturing operations are applied to ensure LBT for new uplink scheduled UEs, then channel access reliability is improved, but data transmission rate deteriorates
Solution Approach 1:
The patent applies puncturing selectively only to specific UEs that are determined to be interfered by reference UEs, rather than applying it universally to all UEs. This localized application maintains reliability for affected UEs while preserving transmission rate for unaffected UEs.
Solution Approach 2:
The patent dynamically determines whether to apply puncturing to each UE based on real-time interference assessment from reference UEs. The puncturing decision is not static but adapts to the current channel conditions and interference scenario, optimizing the balance between reliability and transmission rate.
2Reliability
If puncturing operations are applied to allow LBT for new uplink scheduled UEs, then channel access fairness is improved, but channel occupancy probability deteriorates
Solution Approach 1:
Puncturing is applied locally only to UEs experiencing interference from reference UEs, allowing new UEs to perform LBT successfully. This selective approach ensures fairness for affected UEs while minimizing the overall impact on channel occupancy probability.
Solution Approach 2:
Instead of applying puncturing to all UEs (excessive action), the patent applies it only to the partial set of UEs that are actually interfered. This reduces the overall puncturing overhead and preserves higher channel occupancy probability while still achieving fairness for the affected subset.
3Reliability
If puncturing operations are applied whenever new uplink scheduled UEs appear, then LBT success rate for new UEs is improved, but system overhead increases
Solution Approach 1:
The patent introduces signaling overhead only for UEs that are determined to be interfered by reference UEs. This localized signaling approach ensures LBT success for affected UEs while minimizing the overall system overhead compared to universal signaling.
Solution Approach 2:
Instead of sending puncturing indication signaling to all UEs (excessive action), the patent sends it only to the partial set of UEs that require puncturing. This reduces signaling overhead while maintaining LBT success rate for the affected UEs.
Data Source
AI summary
The present disclosure discloses a transmission processing method and device. The transmission processing method includes: performing uplink scheduling for a User Equipment (UE) in accordance with an uplink scheduling criterion, and determining whether to apply puncturing in accordance with an uplink scheduling result and/or determining whether to instruct the UE to apply the puncturing via signaling in accordance with the uplink scheduling performed for the UE. The uplink scheduling criterion is preset and is for limiting the uplink scheduled UE to reduce a number of puncturing operations. In the prior art, an uplink scheduled UE that is transmitting data needs to be instructed to apply puncturing in a fixed position of a subframe whenever a new uplink scheduled UE appears in a wireless communication system, resulting in a technical problem of a low transmission rate, which is solved in the present disclosure.