Terminal Device HARQ Retransmission for Wireless Resource Conflicts
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Solution Overview
Problem
In new radio (NR) systems, resource conflicts between different services like enhanced mobile broadband (eMBB) and ultra-reliable and low latency communication (URLLC) services lead to deprioritized data transmission, resulting in data loss due to overlapping uplink grants, necessitating effective retransmission scheduling to avoid loss.
Innovation Solution
A method for wireless communication where a terminal device receives retransmission scheduling of a HARQ process and processes deprioritized data based on specific information, determining whether the data is assembled or delivered before retransmission scheduling, allowing for new transmission or retransmission of deprioritized data to reduce resource waste and meet high delay requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple services are supported in NR system, then service diversity is improved, but resource conflict occurs leading to data loss
Solution Approach 1:
The patent segments the handling of data based on priority levels. When resource conflict occurs between eMBB and URLLC services, the terminal device identifies and separates high-priority data (URLLC) from low-priority data (eMBB), applying different transmission strategies to each segment to resolve the reliability issue while maintaining service diversity
Solution Approach 2:
The patent implements preliminary action by performing retransmission scheduling for deprioritized data before actual data transmission occurs. The terminal device proactively identifies potential resource conflicts and arranges retransmission opportunities in advance, preventing data loss before it happens
2Speed
If prioritized service transmission is performed, then transmission priority is improved, but deprioritized data is lost
Solution Approach 1:
The patent converts the harmful effect of deprioritized data loss into a beneficial retransmission opportunity. When prioritized data transmission causes deprioritized data to be dropped, the system responds by scheduling retransmission of the deprioritized data in subsequent available resources, turning the loss into a recoverable situation
Solution Approach 2:
The patent implements feedback mechanisms where the terminal device monitors transmission outcomes and resource availability. Based on this feedback, the system dynamically adjusts retransmission scheduling for deprioritized data, ensuring that lost data is recovered in subsequent transmission opportunities
3Reliability
If retransmission scheduling is implemented, then data loss is reduced, but resource waste increases
Solution Approach 1:
The patent applies partial action by implementing retransmission scheduling only for deprioritized data that was actually lost due to resource conflicts, rather than retransmitting all data. This selective approach prevents unnecessary resource consumption while still protecting against data loss
Solution Approach 2:
The patent changes the parameter of transmission priority dynamically based on resource availability and service requirements. By adjusting priority levels and retransmission timing, the system optimizes resource utilization while maintaining data reliability, avoiding fixed rigid retransmission schedules that would waste resources
Data Source
AI summary
A method for wireless communication, a terminal device, and a non-transitory computer-readable storage medium are provided. The method includes receiving, by a terminal device, retransmission scheduling of a first hybrid automatic repeat request (HARQ) process performed by a network device, and processing, by the terminal device, deprioritized data according to first information. The deprioritized data corresponds to the first HARQ process, and the first information includes at least one of: whether the deprioritized data is assembled before the retransmission scheduling is received, or whether the deprioritized data is delivered to the first HARQ process before the retransmission scheduling is received.