Wireless Uplink Scheduling for Out-of-Order DCI HARQ-ACK Multiplexing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, determining the number of bits for multiplexing high-priority HARQ-ACK on a low-priority PUSCH is challenging, particularly when DCI scheduling is received out of order, leading to potential collisions and reduced transmission performance of high-priority information.
Innovation Solution
A method for wireless communication that involves receiving and transmitting signals to determine overlapping radio resource blocks, using the temporal order of signal reception to optimize the use of DAI fields in DCI scheduling, ensuring accurate determination of HARQ-ACK codebook sizes and minimizing collisions between high and low-priority transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-priority HARQ-ACK is multiplexed on low-priority PUSCH when DCI is received out of order, then spectral efficiency is improved, but determination accuracy of HARQ-ACK codebook size deteriorates
Solution Approach 1:
The patent applies preliminary action by using the temporal order of DCI reception to pre-determine the relationship between DAI fields and HARQ-ACK codebook sizes before actual multiplexing occurs. When DCI is received out of order, the system already has predetermined rules based on reception timing to resolve the ambiguity of codebook size determination, enabling accurate multiplexing of high-priority HARQ-ACK on low-priority PUSCH without waiting for all DCI to be received.
2Reliability
If high-priority transmission is performed when overlapping with low-priority transmission, then reliability of high-priority information is improved, but data loss of low-priority transmission occurs
Solution Approach 1:
The patent converts the harmful collision between high-priority and low-priority transmissions into a beneficial multiplexing opportunity. By allowing high-priority HARQ-ACK to be multiplexed on the low-priority PUSCH resource when DCI is received out of order, the system transforms what would normally be a data loss scenario into an efficient resource utilization scenario, where the low-priority resource carries both low-priority data and high-priority control information.
3Adaptability or versatility
If DCI scheduling is received out of order, then system scheduling flexibility is improved, but collision between high and low-priority transmissions increases
Solution Approach 1:
The patent implements feedback mechanisms where the temporal order of DCI reception is used as feedback information to determine the relationship between DAI fields and HARQ-ACK codebook sizes. This feedback loop allows the system to adapt to out-of-order DCI reception by using reception timing information to resolve scheduling conflicts, thereby reducing collisions while maintaining scheduling flexibility.
Data Source
AI summary
The present application discloses a method and a device in a node for wireless communications. A first receiver receives a first signaling and a second signaling; and a first transmitter transmits a first signal in a target radio resource block, the first signal carrying a first bit block; wherein the first signaling is used to determine the first bit block, and the first signaling is used to determine a first radio resource block; the second signaling is used to determine a second radio resource block, the second radio resource block being reserved for a second bit block; the first bit block comprises at least one of first-type information bit(s) or second-type information bit(s); the second signaling comprises a first field; when the first bit block comprises the first-type information bit(s).