HARQ-ACK Codebook Feedback Parameter Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication systems face challenges in efficiently transmitting HARQ-ACK feedback information due to inconsistent understanding between network devices and terminals, resource wastage, and inability to meet varying reliability and latency requirements for different downlink data services, particularly in semi-static and dynamic feedback modes.
Innovation Solution
A method where a network device sends downlink control information to a terminal device to determine a feedback parameter for the HARQ-ACK codebook, including the feedback mode and resource allocation, allowing the terminal to adapt the HARQ-ACK codebook transmission accordingly, whether in semi-static or dynamic feedback modes, to meet specific service requirements without resource wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If semi-static feedback mode is used, then resource allocation is simplified, but adaptability to different service requirements deteriorates
Solution Approach 1:
The patent implements dynamic feedback mode where the HARQ-ACK codebook size and feedback resources are determined dynamically based on downlink control information and service requirements, allowing the system to adapt to different reliability and latency needs while maintaining efficient resource allocation through standardized procedures
2Adaptability or versatility
If dynamic feedback mode is used, then adaptability to different service requirements is improved, but system complexity increases
Solution Approach 1:
The patent changes feedback parameters (codebook size, feedback resources) dynamically based on downlink control information and service type indicators, allowing adaptation to different requirements while managing complexity through parameter-based control rather than structural complexity
3Reliability
If HARQ-ACK codebook size is increased, then feedback information completeness is improved, but resource usage efficiency deteriorates
Solution Approach 1:
The patent dynamically adjusts the HARQ-ACK codebook size based on the actual number of downlink transmissions and service requirements, ensuring complete feedback information is provided only when necessary while minimizing resource usage through adaptive codebook construction
Data Source
AI summary
A method for transmitting feedback information, a terminal device, and a network device are provided, which can meet feedback requirements of different downlink data without causing waste of resources. The method comprises: receiving, by a terminal device, downlink control information for scheduling target data sent by a network device; receiving by the terminal device, the target data sent by the network device; determining, by, the terminal device, a feedback parameter of a hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook according to the downlink control information, wherein the HARQ-ACK codebook comprises HARQ-ACK information of the target data, the feedback parameter comprises a feedback mode of the HARQ-ACK codebook and/or a feedback resource for sending the HARQ-ACK codebook, and the feedback mode of the HARQ-ACK codebook comprises a semi-static feedback mode or a dynamic feedback mode; and sending, by the terminal device, the HARQ-ACK codebook to the network device according to the feedback parameter.