Selective HARQ Feedback for PDCCH Control Information Reliability
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Solution Overview
Problem
Current wireless communication systems lack a reliable Hybrid Automatic Repeat Request (HARQ) feedback mechanism for control information carried by the Physical Downlink Control Channel (PDCCH), which is crucial for user equipment to demodulate downlink data and transmit uplink data effectively.
Innovation Solution
Implementing a HARQ feedback mechanism in user equipment and network side devices to determine, based on the content of Downlink Control Information (DCI) carried by the PDCCH, whether to perform HARQ feedback, thereby ensuring the reliability of control information transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HARQ feedback mechanism is implemented for PDCCH control information, then transmission reliability of control information is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent extracts only the essential HARQ feedback functionality needed for PDCCH reliability, implementing it selectively based on DCI content rather than universally. This allows the system to obtain reliability improvements while avoiding the full complexity of a complete HARQ feedback implementation for all control information.
Solution Approach 2:
The patent introduces dynamic determination of whether to perform HARQ feedback based on the content of DCI. The user equipment and network side device dynamically decide on HARQ feedback necessity according to specific conditions, making the system adaptable and reducing unnecessary complexity while maintaining reliability where needed.
2Reliability
If HARQ feedback is performed for all DCI content, then transmission reliability is improved, but signaling overhead and latency increase
Solution Approach 1:
The patent applies partial action by implementing HARQ feedback only for specific DCI content that requires it, rather than for all DCI. This selective approach provides sufficient reliability for critical control information while avoiding the time loss and overhead associated with universal HARQ feedback implementation.
Solution Approach 2:
The patent implements a targeted feedback mechanism where HARQ feedback is triggered only when necessary based on DCI content analysis. This conditional feedback approach maintains reliability for essential control information while reducing overall signaling overhead and latency compared to continuous feedback.
Data Source
AI summary
The present invention relates to a user equipment, an electronic device, a wireless communication method, and a storage medium. The user equipment according to the present invention comprises a processing circuit configured to: demodulate a downlink signal from a network side device to obtain a Physical Downlink Control Channel (PDCCH) comprised in the downlink signal; and determine, according to the content of Downlink Control Information (DCI) born on the PDCCH, whether to implement Hybrid Automatic Repeat Request (HARD) feedback for the DCI. The use of the user equipment, the electronic device, the wireless communication method, and a computer readable storage medium according to the present invention can improve the reliability of control information born on a PDCCH.