DCI Feedback Timing Validation to Reduce Terminal Power Waste
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Solution Overview
Problem
The existing communication technologies face issues of low system efficiency and waste of power consumption in terminal devices due to unreasonable scheduling indications when receiving Downlink Control Information (DCI) with inapplicable values for feedback timing.
Innovation Solution
The method involves receiving and sending DCI formats that include a specific information field for indicating a time unit for sending feedback information, ensuring the indication result is an applicable value, even when the DCI is used for scheduling downlink channel transmission or indicating semi-static resource release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station sends DCI with an inapplicable value in the feedback timing indicator field, then the terminal device receives the scheduling indication, but the terminal device cannot determine the transmission resource for feedback information, leading to low system efficiency and power waste
Solution Approach 1:
The terminal device performs preliminary validation on the feedback timing indicator field before processing the scheduling indication. By checking whether the indicated time resource is valid (within the allowed range and not conflicting with other allocations), the terminal can identify and discard unreasonable scheduling indications in advance, preventing the execution of invalid operations that would waste system resources and terminal power.
Solution Approach 2:
The terminal device pre-configures the valid value range for the feedback timing indicator field based on system parameters and configuration information. This preliminary setup enables the terminal to quickly validate received DCI messages against the pre-established criteria, determining whether the indicated time resource is applicable before committing to feedback transmission operations.
2Ease of operation
If the terminal device processes DCI with inapplicable feedback timing values, then the terminal attempts to send feedback information, but no valid transmission resource is available, causing power consumption waste
Solution Approach 1:
The terminal device applies preliminary validation to detect invalid feedback timing indications before attempting feedback transmission. By identifying inapplicable values in the feedback timing indicator field upfront, the terminal可以避免 executing power-consuming feedback operations when no valid transmission resource is available, thus preventing energy waste while maintaining operational simplicity for valid cases.
3Adaptability or versatility
If the DCI format includes a feedback timing indicator field with inapplicable values, then the terminal device must handle invalid indications, but this leads to unnecessary processing and reduced system efficiency
Solution Approach 1:
The terminal device autonomously validates the feedback timing indicator field against pre-configured valid value ranges and system constraints. This self-service validation mechanism enables the terminal to independently identify and filter out invalid scheduling indications without requiring additional network intervention or complex joint processing, thereby maintaining DCI format flexibility while improving system efficiency through streamlined validation.
Data Source
AI summary
Disclosed are an information receiving method, an information sending method, an information receiving apparatus, an information sending apparatus, and a device. The method comprises: receiving first downlink control information (DCI), wherein the first DCI uses a first DCI format which comprises a first information domain; the first information domain is used for indicating a time unit for sending feedback information; the first DCI is used for instructing a terminal device to send the feedback information corresponding to at least one downlink channel; an indication result of the first information domain is an applicable value; the at least one downlink channel comprises a target downlink channel; the target downlink channel is not related to the first DCI; and when the first DCI format is used for scheduling downlink channel transmission or indicating semi-static resource release, the value range of the indication result of first information domain comprises an inapplicable value.