PUSCH Termination via Fixed Symbol Count
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing the termination of physical uplink shared channel (PUSCH) transmissions, particularly when they overlap with hybrid automatic repeat request (HARQ) processes, leading to processing time uncertainties and potential conflicts with dynamic slot format indications.
Innovation Solution
A method is introduced where a user equipment (UE) receives downlink control information (DCI) scheduling a PUSCH transmission and terminates the transmission after a fixed number of symbols, counted from the symbol after the last symbol of a control resource set (CORESET). This method also involves skipping HARQ process repetitions and terminating PUSCH based on valid uplink grants and new data indicator bit-field toggling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PUSCH transmission is scheduled to overlap with HARQ process repetitions, then resource utilization is improved, but processing time uncertainty and transmission conflicts increase
Solution Approach 1:
The patent establishes predetermined rules for PUSCH termination based on DCI detection timing. The UE determines in advance whether to terminate PUSCH transmission based on whether DCI is detected within a specific time window (e.g., within 24 symbols or within N2 preparation time) after the last CORESET symbol, eliminating the need for real-time decisions during transmission and ensuring consistent processing behavior.
Solution Approach 2:
The patent introduces dynamic termination conditions that adapt to actual channel conditions and scheduling scenarios. The termination decision is made dynamically based on whether DCI is actually detected within the predetermined time window, allowing the system to flexibly handle different overlapping scenarios while maintaining deterministic processing time bounds.
2Reliability
If PUSCH transmission is terminated based on DCI detection, then transmission conflicts are reduced, but device complexity increases
Solution Approach 1:
The patent segments the termination decision process into distinct, manageable steps: (1) monitoring for DCI within a predetermined time window after the last CORESET symbol, (2) determining whether DCI was detected within that window, and (3) executing termination or continuation based on the determination. This segmentation simplifies the overall logic by breaking down the complex termination decision into discrete, implementable steps.
Solution Approach 2:
The patent uses specific parameter thresholds to simplify the termination logic, such as fixed time windows (e.g., 24 symbols) or processing capability-based parameters (N2). By changing the decision criterion from complex real-time analysis to simple parameter comparison (was DCI detected within N2 symbols?), the implementation complexity is significantly reduced while maintaining reliable conflict avoidance.
3Manufacturing precision
If fixed number of symbols is used for PUSCH preparation time, then processing capability alignment is improved, but adaptability to different scenarios decreases
Solution Approach 1:
The patent makes the N2 parameter universal by defining it as a function of the UE's processing capability rather than specific transmission scenarios. The same N2 value (determined by processing capability) applies across different PUSCH transmission scenarios, including both overlapping and non-overlapping cases, as well as different numerologies. This universal parameter ensures consistent processing capability alignment while the predetermined time window approach provides scenario adaptability.
Data Source
AI summary
Certain embodiments are directed to a system and method of physical uplink shared channel (PUSCH) transmission termination. The system and method can include a user equipment (UE) that can receives a downlink control information (DCI) scheduling a PUSCH transmission overlapped with repetitions of a hybrid automatic repeat request (HARQ) process for the UE and terminates the PUSCH transmission upon detection of the DCI after a fixed number of symbols where the fixed number of symbols is counted from a symbol after the last symbol of a control resource set (CORESET).