Uplink Resource Timing for Control Information Feedback
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Solution Overview
Problem
In wireless communication systems, base stations face challenges in determining whether user equipment (UE) correctly receives control information, which is essential for acquiring corresponding communication data, leading to potential data acquisition failures.
Innovation Solution
The method involves the UE sending response information through a target uplink resource to indicate whether control information was correctly received, with the time-frequency position of the uplink resource determined based on the processing time of the control information, ensuring a sufficient spacing from the downlink resource to facilitate accurate communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station sends control information to UE, then the UE can acquire communication data, but the base station cannot determine whether the UE correctly receives the control information
Solution Approach 1:
The patent implements a feedback mechanism where the UE sends response information (ACK/NACK) to the base station to indicate whether control information was correctly received. This allows the base station to obtain real-time feedback on reception status and perform appropriate actions (retransmission or proceed with data transmission).
Solution Approach 2:
The patent determines the time-frequency position of the uplink resource in advance based on the downlink control information position and UE processing capability. This preliminary determination ensures that the UE has sufficient time to process the control information before sending the response, preventing timing conflicts and ensuring reliable feedback delivery.
2Productivity
If the UE processes control information quickly, then communication efficiency improves, but the UE may not have sufficient time to accurately process and respond to the control information
Solution Approach 1:
The patent makes the uplink resource timing dynamic by determining it based on the UE's actual processing capability. Different UEs can have different processing times (e.g., T_proc,1 or T_proc,2) depending on their capabilities, allowing the system to adapt to varying UE performance levels while maintaining overall efficiency.
Solution Approach 2:
The patent changes the time-domain parameter (spacing between downlink control information and uplink response) based on UE processing capability. The base station configures different time offsets for different UEs or different scenarios, optimizing both processing accuracy and communication efficiency by matching the timing parameters to the specific UE characteristics.
3Reliability
If the spacing between downlink control information and uplink response is increased, then the UE has sufficient processing time, but the communication latency increases
Solution Approach 1:
The patent dynamically adjusts the time-spacing parameter between downlink control information and uplink response based on UE processing capability. For UEs with faster processing capability, a smaller time offset is used, reducing latency. For UEs requiring more processing time, a larger offset is configured, ensuring complete processing. This parameter adaptation resolves the contradiction between processing completeness and latency.
Data Source
AI summary
Methods, apparatuses, and storage medium are provided for information transmission. The method includes receiving target control information sent by a base station through a target downlink resource; determining a time-frequency position of a target uplink resource; and sending response information to the base station through the target uplink resource according to the time-frequency position, the response information being configured to indicate whether user equipment (UE) correctly receives the target control information. The determining the time-frequency position of the target uplink resource includes: determining a time length required by control information processing of the UE; determining a time-frequency position of the target downlink resource; and determining the time-frequency position of the target uplink resource. A spacing between the time-frequency position of the target uplink resource and the time-frequency position of the target downlink resource in a time domain is greater than or equal to the time length.