PUSCH Transmission Condition for Wireless Resource Efficiency
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Solution Overview
Problem
The increasing demand for high data throughput and communication capacity in wireless communication systems, particularly due to the rise of M2M communication and high-density user equipment, poses challenges in efficiently managing limited radio resources and reducing latency.
Innovation Solution
A method for efficiently transmitting and receiving physical uplink shared channel (PUSCH) data by determining PUSCH occasions based on resource allocation and performing transmission only if a predetermined condition is met, which includes considerations such as the next symbol after a PUSCH occasion being the start of another occasion, to optimize resource usage and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of UEs and data volume increase to satisfy high data throughput demand, then communication capacity increases, but radio resource efficiency deteriorates
Solution Approach 1:
The PUSCH transmission resources are segmented into multiple PUSCH occasions within a time domain resource allocation. The UE determines multiple PUSCH occasions based on the resource allocation, allowing distributed transmission across different time instances. This segmentation enables better resource utilization and reduces congestion on any single resource, thereby improving radio resource efficiency while maintaining high data throughput capacity.
2Productivity
If PUSCH transmission is performed in all allocated occasions, then data throughput is maximized, but latency increases due to unnecessary transmissions
Solution Approach 1:
Instead of performing PUSCH transmission in all allocated occasions, the UE applies a determination condition to identify which occasions are necessary. The condition checks whether the next symbol after a PUSCH occasion is the start of another PUSCH occasion or another uplink symbol. This partial action approach avoids unnecessary transmissions while ensuring data is transmitted in time, thereby reducing latency without compromising data throughput.
3Productivity
If resource allocation is increased to support high-density UEs, then communication capacity improves, but resource management complexity increases
Solution Approach 1:
The UE autonomously determines which PUSCH occasions are necessary for transmission by evaluating the determination condition itself, without requiring complex centralized resource management. The condition-based self-determination allows each UE to independently optimize its transmission schedule, reducing the overall system's resource management complexity while supporting high-density UE scenarios through efficient autonomous resource utilization.
Data Source
AI summary
UE may: receive resource allocation; determine a plurality of physical uplink shared channel (PUSCH) periods on the basis of the resource allocation; when a predetermined condition is satisfied, perform PUSCH transmission on a PUSCH period whose time length is less than or equal to a certain length from among the plurality of PUSCH periods; and when the predetermined condition is not satisfied, omit the PUSCH transmission.