Overlapping PUSCH Dropping Rules Under Rank and Port Limits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing overlapping uplink shared channel messages due to resource constraints, leading to potential transmission failures when rank values or port quantities exceed threshold limits.
Innovation Solution
Implementing rules for a user equipment (UE) to drop overlapping uplink shared channel (PUSCH) messages based on threshold rank values or port quantities, considering factors like CORESET index, SRS resource set, priority, starting time, CG configuration, periodicity, modulation and coding scheme, transport block size, and message type (CG-PUSCH or DG-PUSCH) to manage resource overlap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple PUSCH messages with high rank values or port quantities are transmitted simultaneously, then communication data rate is improved, but resource constraints are violated and transmission failures occur
Solution Approach 1:
The UE performs preliminary checks on rank values and port quantities before transmitting PUSCH messages. By evaluating whether the sum of rank values or port quantities exceeds threshold limits in advance, the system prevents transmission failures before they occur, thereby maintaining both high data rate and transmission reliability
2Productivity
If PUSCH messages overlap in time domain, then resource utilization is improved, but interference between messages increases and transmission reliability decreases
Solution Approach 1:
The system implements feedback mechanisms where the UE monitors overlapping PUSCH transmissions and applies dropping rules based on threshold comparisons. When interference or resource constraints are detected, the UE selectively drops messages to maintain transmission reliability while preserving resource utilization efficiency
3Reliability
If threshold limits on rank values and port quantities are enforced, then transmission reliability is improved, but flexibility in resource allocation is reduced
Solution Approach 1:
The system dynamically adjusts resource allocation by applying dropping rules only when threshold limits are exceeded. When resources are sufficient, the UE transmits all scheduled PUSCH messages without restriction. This dynamic approach maintains transmission reliability through threshold enforcement while preserving resource allocation flexibility under normal conditions
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive one or more control messages from a network entity scheduling a first and second physical uplink shared channel (PUSCH) messages that overlap at least partially in the time domain. For example, the UE may receive a first control message indicating a set of first PUSCH messages associated with a first rank value and a first quantity of ports and a second control message indicating a second PUSCH message associated with a second rank value and a second quantity of ports. In cases that transmitting both the first and second PUSCH messages exceeds a threshold rank value or a threshold quantity of ports, the UE may refrain from transmitting one of the first or second PUSCH messages.