Terminal Rate Matching for Uplink Feedback Multiplexing
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Solution Overview
Problem
In the 5G NR communication system, the base station struggles to accurately predict and schedule ACK/NACK feedback, leading to inefficiencies in UCI multiplexing transmission, as it cannot accurately identify the number of feedback response information, affecting the accuracy and stability of data scheduling.
Innovation Solution
A method where the terminal receives downlink control information (DCI) for scheduling uplink data through PUSCH, and based on the transmission time of feedback response information, performs rate matching or puncturing to accurately multiplex and transmit feedback response information, ensuring accurate data scheduling by determining the appropriate resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station uses traditional scheduling methods for UCI multiplexing transmission, then the system maintains backward compatibility with LTE, but the base station cannot accurately predict and schedule ACK/NACK feedback, leading to inefficiencies in data scheduling
Solution Approach 1:
The patent applies preliminary action by having the terminal perform rate matching on uplink data based on the feedback response information before transmission. The terminal determines the number of resource elements occupied by feedback information in advance and uses this to guide the rate matching process, allowing the base station to accurately predict the number of coded data bits and schedule resources efficiently without uncertainty about feedback information size
Solution Approach 2:
The patent introduces an intermediary mechanism where the terminal calculates and determines the number of resource elements occupied by feedback response information, and uses this intermediate value to bridge the gap between feedback information generation and resource scheduling. This intermediate calculation enables the base station to perform accurate rate matching and resource allocation
2Reliability
If the terminal transmits feedback response information through PUSCH multiplexing, then the accuracy and stability of data scheduling is improved, but the complexity of resource allocation and rate matching increases
Solution Approach 1:
The patent applies segmentation by dividing the resource allocation process into distinct segments: first determining the number of resource elements occupied by feedback information, then using this segmented information to guide rate matching of uplink data, and finally performing separate encoding and multiplexing. This segmentation simplifies the overall complexity by breaking down the resource allocation task into manageable, sequential steps
Solution Approach 2:
The patent implements self-service by having the terminal autonomously determine the number of resource elements occupied by its own feedback response information and perform rate matching on its uplink data based on this self-calculated information. The terminal serves itself in the resource allocation process, reducing the signaling overhead and complexity that would otherwise be required for the base station to manage this allocation
Data Source
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AI summary
Disclosed are an information transmission method, and a related product. The method comprises: a terminal receiving first downlink control signaling (DCI), wherein the first DCI is used for scheduling the terminal to send, in a target time unit, uplink data by means of a physical uplink shared channel (PUSCH); the terminal receiving second DCI, wherein feedback response information about the second DCI is sent in the target time unit, and a sending time of the second DCI is before the target time unit or is the same as the target time unit; and according to the sending time of the second DCI, the terminal determining to send, in the target time unit, the feedback response information about the second DCI by means of the PUSCH. The embodiments of the disclosure are advantageous for improving the accuracy and stability of the data scheduling of a communication system.