Multiplexing A/N Information for PDSCH Groups
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting and receiving wireless signals, particularly in managing acknowledgement/negative acknowledgement (A/N) information for physical downlink shared channels (PDSCH) groups, which affects the overall performance and reliability of data transmission.
Innovation Solution
A method and apparatus for generating and transmitting A/N information for multiple PDSCH groups, with specific A/N information for PDSCHs that do not belong to any group, allowing for efficient transmission and reception of control information, including semi-persistent scheduling (SPS) PDSCHs, and enabling A/N retransmission for certain PDSCHs while prohibiting it for SPS PDSCHs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If A/N information for multiple PDSCH groups is transmitted separately, then reliability of acknowledgment is improved, but transmission overhead and complexity increase
Solution Approach 1:
The patent combines A/N information from multiple PDSCH groups into a single uplink transmission. Specifically, A/N information for first PDSCH group, second PDSCH group, and specific PDSCH are multiplexed together in one control information message, reducing the number of separate transmissions needed while maintaining reliable acknowledgment for each group
Solution Approach 2:
The control information structure is designed to handle multiple types of A/N information universally. The same transmission mechanism accommodates A/N for grouped PDSCHs, ungrouped specific PDSCH, and SPS PDSCHs, providing a multi-functional solution that reduces overall system complexity
2Reliability
If A/N retransmission is enabled for all PDSCHs, then reliability is improved, but transmission overhead increases
Solution Approach 1:
The patent applies different retransmission policies to different PDSCH types based on their specific requirements. A/N retransmission is enabled for dynamic PDSCHs where it provides significant reliability benefits, while SPS PDSCHs use a different acknowledgment mechanism, optimizing the balance between reliability and overhead for each case
Data Source
AI summary
The present disclosure relates to a wireless communication system, and specifically, a method and an apparatus therefor, the method comprising: generating first A/N information for a first PDSCH group and second A/N information for a second PDSCH group, wherein each PDSCH group is a basic group for an A/N request; based on an A/N for a specific PDSCH not belonging to any PDSCH group being transmitted with the first and second A/N information, appending the A/N for the specific PDSCH after the first and second A/N information; and transmitting control information including the first and second A/N information and the A/N for the specific PDSCH.