Two-Part HARQ-ACK Payload Segmentation for Wireless Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback, particularly in reducing the number of bits allocated for HARQ-ACK feedback in the physical uplink control channel (PUCCH).
Innovation Solution
The method involves forming a two-part HARQ-ACK payload, where a first HARQ-ACK part and a second HARQ-ACK part are separately encoded and multiplexed using different beta offset values. The size of the second HARQ-ACK part is functionally related to the first HARQ-ACK part, allowing for efficient compression and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the HARQ-ACK payload is transmitted as a single part, then the feedback is simple to implement, but the number of bits allocated for HARQ-ACK feedback increases, consuming more network bandwidth
Solution Approach 1:
The HARQ-ACK payload is divided into two separate parts: a first HARQ-ACK part and a second HARQ-ACK part. The first part contains essential HARQ feedback information, while the second part contains additional feedback information. This segmentation allows the system to transmit only the necessary bits for HARQ-ACK feedback, reducing the total number of bits allocated while maintaining feedback functionality.
2Reliability
If the HARQ-ACK feedback uses more bits to ensure complete feedback information, then the feedback reliability is improved, but the network bandwidth consumption increases
Solution Approach 1:
By segmenting the HARQ-ACK payload into two parts with different sizes, the system can transmit essential feedback information in the first part and additional information in the second part. This allows the system to maintain feedback reliability by including all necessary feedback bits while reducing overall bandwidth consumption compared to transmitting a single large payload.
Solution Approach 2:
The system changes the parameter of payload size by creating a first HARQ-ACK part with a specific size and a second HARQ-ACK part with a different size. This parameter change allows the system to optimize the balance between feedback reliability and bandwidth usage by selectively including feedback information in each part.
3Productivity
If a single beta offset value is used for HARQ-ACK multiplexing, then the implementation is simple, but the efficiency of bandwidth utilization is reduced
Solution Approach 1:
Different beta offset values are assigned to different parts of the HARQ-ACK payload. The first HARQ-ACK part uses a first beta offset value, while the second HARQ-ACK part uses a second beta offset value. This local quality approach allows each part to be multiplexed with appropriate bandwidth resources, improving overall feedback efficiency while maintaining manageable implementation complexity through structured configuration.
Data Source
AI summary
A method for wireless communication at a user equipment (UE) includes forming a first hybrid automatic repeat request acknowledgement (HARQ-ACK) part and a second HARQ-ACK part associated with a HARQ-ACK payload. The HARQ-ACK payload including HARQ feedback for each one of a group of downlink transmissions received from a network node. A size of the second HARQ-ACK part is a function of the first HARQ-ACK part. The method also includes separately encoding the first HARQ-ACK part and the second HARQ-ACK part. The method further includes multiplexing the encoded first HARQ-ACK part in accordance with a first beta offset value and the encoded second HARQ-ACK part in accordance with a second beta offset value. The method also includes transmitting, to the network node, the multiplexed first HARQ-ACK part and second HARQ-ACK part.