Uplink Feedback Codebook Multiplexing for NR-U DCI Format 1_0
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the NR-U system, the group-based ACK/NACK feedback mode is not suitable for direct integration with DCI format 1_0, leading to limitations in uplink transmission efficiency and service delay due to the lack of necessary information fields, resulting in scheduling limitations and system efficiency loss.
Innovation Solution
A method and device for generating uplink information by receiving and determining transmission resources for feedback information, where a feedback information codebook includes both first and second feedback information, with the second feedback information corresponding to a target group and overlapping with the first transmission resource, allowing for multiplexing and transmission with other information without adding information fields to DCI format 1_0.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If DCI format 1_0 is used to maintain basic connection transmission, then transmission reliability is high and bit size remains constant, but uplink feedback information cannot be generated according to group-based ACK/NACK feedback mode
Solution Approach 1:
The patent merges first feedback information (from DCI format 1_0) and second feedback information (from group-based ACK/NACK feedback mode) into a single first feedback information codebook. This allows both feedback types to be transmitted together on the same uplink resource, resolving the contradiction by enabling group-based feedback functionality without compromising the reliability of DCI format 1_0 transmission.
Solution Approach 2:
The feedback information codebook is designed to serve multiple functions: it can carry both traditional feedback information and group-based ACK/NACK feedback information. This multi-functionality allows the system to maintain backward compatibility with DCI format 1_0 while simultaneously supporting the enhanced group-based feedback mode, thus improving uplink transmission efficiency without sacrificing reliability.
2Adaptability or versatility
If group information and new feedback information field are added to DCI format 1_0, then group-based ACK/NACK feedback mode can be supported, but DCI format 1_0 bit size increases and may cause misunderstanding
Solution Approach 1:
The patent segments feedback information into two distinct types: first feedback information (traditional) and second feedback information (group-based ACK/NACK). By separating these feedback types conceptually and combining them in a structured codebook format, the system enables group-based feedback support without modifying DCI format 1_0 structure, thus maintaining understanding consistency while achieving adaptability.
Solution Approach 2:
The feedback information codebook acts as an intermediary that carries both first and second feedback information. Instead of adding group information fields directly to DCI format 1_0, the patent uses the codebook as a mediator to transport group-based feedback information separately, avoiding any modification to DCI format 1_0 and preserving its constant bit size and understanding consistency.
3Productivity
If first feedback information is transmitted alone, then transmission resource is wasted, but if multiplexed with second feedback information, then uplink transmission efficiency improves
Solution Approach 1:
The patent combines first feedback information and second feedback information into a unified first feedback information codebook for joint transmission. This merging approach eliminates resource waste by transmitting both feedback types together on the same uplink resource, while the structured codebook format ensures that both types of information remain complete and distinguishable, thus improving efficiency without losing information completeness.
Data Source
AI summary
An uplink information generation method and a device thereof. The method includes: receiving at least one piece of first signaling, wherein a physical channel scheduled by the first signaling or a physical channel carrying the first signaling has no group information; determining a first transmission resource transmitting first feedback information corresponding to the first signaling; and a terminal apparatus generating a first feedback information codebook, the first feedback information codebook including the first feedback information and second feedback information, the second feedback information being feedback information corresponding to a target group indicated by second signaling, and a transmission resource of the second feedback information overlapping with the first transmission resource.