Partial HARQ-ACK Codebook Feedback for Low-Priority Service Conflict Resolution
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Solution Overview
Problem
In radio communication technologies, when a low-priority service's HARQ-ACK information conflicts with a high-priority uplink service, it is often discarded due to multiplexing conditions, leading to high resource overhead in retransmitting HARQ-ACK information for all processes to retransmit the discarded information.
Innovation Solution
Implementing a partial one-shot HARQ-ACK codebook feedback mode, where only the necessary HARQ processes are retransmitted, reducing resource overhead by transmitting or retransmitting HARQ-ACK codebook information for specific partial HARQ processes rather than all processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If one-shot HARQ-ACK codebook is used to retransmit discarded HARQ-ACK information, then reliability of low-priority service is improved, but resource overhead increases
Solution Approach 1:
The patent segments the HARQ-ACK codebook into multiple parts, each corresponding to different HARQ processes or process groups. Instead of transmitting a complete codebook covering all HARQ processes, the system transmits only the necessary segments containing discarded low-priority HARQ-ACK information. This segmentation allows selective retransmission, reducing overall resource overhead while maintaining reliability for the affected services.
Solution Approach 2:
The patent implements partial action by transmitting only the necessary portion of HARQ-ACK codebook rather than the complete codebook. The network device indicates which specific HARQ processes or process groups require retransmission, and the terminal device prepares and transmits only those partial codebooks. This avoids the excessive resource consumption of transmitting all HARQ-ACK information when only a subset is needed.
2Loss of information
If complete HARQ-ACK codebook is transmitted for all processes, then information completeness is improved, but transmission efficiency deteriorates
Solution Approach 1:
The HARQ-ACK codebook is divided into multiple segments, where each segment corresponds to specific HARQ processes or process groups. The network device can indicate which segments need to be transmitted by providing process group indicators or bitmap information. This segmentation enables the system to maintain information completeness for required processes while improving transmission efficiency by excluding unnecessary segments.
Solution Approach 2:
The system performs partial transmission of the HARQ-ACK codebook by sending only the portions that contain discarded low-priority service information. The network device determines which HARQ processes are affected and requests only those specific segments. This partial action approach ensures that all necessary information is transmitted while avoiding the inefficiency of transmitting complete codebooks when only partial information is needed.
3Ease of operation
If HARQ-ACK information of low-priority service is discarded to avoid conflict, then service conflict resolution is improved, but information loss increases
Solution Approach 1:
The system performs preliminary identification of which HARQ processes contain discarded low-priority service information. The network device tracks which processes are affected by conflicts and prepares indicators to request retransmission of only those specific processes. This preliminary action enables targeted recovery of lost information without requiring complete codebook retransmission, thus resolving the information loss issue while maintaining ease of conflict resolution.
Solution Approach 2:
The system implements a feedback mechanism where the network device receives acknowledgment about which HARQ processes have successful transmissions and which have conflicts. Based on this feedback, the network device identifies the specific processes containing discarded low-priority information and requests selective retransmission. This feedback-driven approach ensures that only the necessary information is retransmitted, reducing overhead while recovering lost data.
Data Source
AI summary
The present disclosure relates to a transmission method, a transmission apparatus, and a storage medium. The transmission method, which is applied to a terminal, can include determining a hybrid automatic repeat request HARQ process set, and transmitting or retransmitting HARQ-ACK codebook information of partial HARQ processes in the HARQ process set.