HARQ State Management for Multi-TB Scheduling
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Solution Overview
Problem
Existing technologies face challenges in efficiently managing HARQ states for multi-transport block (TB) scheduling in non-terrestrial networks (NTN) and Internet of Things (IoT) over NTN, leading to issues like HARQ stalling and increased transmission latency.
Innovation Solution
The proposed solution involves determining a configured HARQ state for a specific HARQ process and applying it uniformly to all HARQ processes for multi-TB scheduling, simplifying DRX behavior and enhancing scheduling flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If HARQ feedback is disabled for NTN and IoT over NTN, then the gNB can reuse HARQ process ID before full HARQ RTT has elapsed, avoiding HARQ stalling and reducing transmission latency, but some details on HARQ states need further study and management complexity increases
Solution Approach 1:
The patent applies homogeneity by determining that all HARQ processes have the same HARQ state based on a specific configured HARQ state. This uniform approach simplifies the management complexity while enabling the gNB to reuse HARQ process IDs before full RTT elapsed, thereby reducing transmission latency without introducing complex state management procedures
2Productivity
If HARQ feedback is disabled to enable peak throughput, then transmission latency is reduced and HARQ stalling is avoided, but the system requires simplified DRX behavior and unified HARQ state management
Solution Approach 1:
The patent changes the parameter of HARQ state uniformity across all processes, where all HARQ processes are determined to have the same HARQ state. This parameter change enables peak throughput by allowing HARQ process ID reuse while simplifying DRX behavior management through unified state determination, avoiding the need for complex per-process state tracking
Data Source
AI summary
Example embodiments of the present disclosure relate to a terminal device, a network device, methods, apparatuses, and a computer readable storage medium for HARQ state for RRC configuration for multi-TB scheduling. In the solution, a terminal device may receive information which schedules multiple TBs and indicating multiple HARQ processes, the terminal device may further determine a same HARQ state for all of the multiple HARQ processes based on a configured HARQ state of a specific HARQ process in the multiple HARQ processes. As such, a same HARQ state may be applied for all scheduled TBs. Therefore, a flexibility on scheduling is provided, in addition, the DRX behavior for multi-TB scheduling is simplified.