NTN Data Transmission with HARQ Feedback Disabled
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Solution Overview
Problem
The inefficiency of data transmission in non-terrestrial networks (NTN) due to large round-trip times (RTT) and the need for frequent HARQ feedback, which degrades system performance.
Innovation Solution
Configuring the HARQ process feedback function to a disabled state for pre-configured resources in NTN systems, allowing terminals to transmit or receive data without waiting for acknowledgement, thereby optimizing data transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HARQ feedback mechanism is used for data transmission in NTN system, then transmission reliability is improved, but transmission delay increases and transmission efficiency deteriorates
Solution Approach 1:
The patent extracts the HARQ feedback mechanism from the data transmission process by configuring the feedback function to a disabled state. This removes the time-consuming feedback interaction loop while maintaining the core data transmission functionality, thereby resolving the contradiction between reliability and delay.
Solution Approach 2:
The patent applies preliminary action by pre-configuring the HARQ feedback function to be disabled before data transmission begins. This anticipatory configuration eliminates the need for real-time feedback decisions during transmission, reducing delay while preserving transmission reliability through alternative mechanisms.
2Reliability
If HARQ feedback mechanism is used for data transmission in NTN system, then transmission reliability is improved, but transmission efficiency deteriorates
Solution Approach 1:
The patent removes the HARQ feedback interaction from the transmission process by disabling the feedback function. This extraction eliminates the overhead of feedback signaling and waiting periods, directly improving transmission efficiency while maintaining reliability through the pre-configured disabled state.
Solution Approach 2:
The patent enables continuous data transmission by disabling HARQ feedback, allowing the transmission process to proceed without interruption for feedback exchanges. This continuity maintains useful action throughout the transmission period, improving overall productivity while preserving reliability.
3Reliability
If HARQ feedback interactions are performed frequently, then transmission reliability is improved, but system complexity increases
Solution Approach 1:
The patent extracts the complex HARQ feedback interaction mechanism from the system by configuring it to a disabled state. This removal simplifies the system architecture and operation while maintaining transmission reliability through alternative means.
Solution Approach 2:
The patent inverts the conventional approach by disabling the feedback function rather than enabling it. This inversion simplifies the system by eliminating the need for complex feedback management, timing synchronization, and retransmission coordination, thereby reducing system complexity while maintaining reliability.
Data Source
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AI summary
Embodiments of the present application provide a data transmission method and apparatus, and a device. The method comprises: a terminal device receives first indication information from a network device, and determines, according to the first indication information, a HARQ feedback function state corresponding to a first pre-configured resource. The method can improve the data transmission efficiency between a network device and a terminal device.