Blind Detection Method for Control Channel DCI
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Solution Overview
Problem
In communication systems, blind detection of control channels often results in false detection, leading to unnecessary operations as terminals detect downlink control information (DCI) even when it is not transmitted by the base station.
Innovation Solution
A method is proposed that involves obtaining DCI through blind detection of multiple subframes and employing a reconfirmation mechanism to validate the non-false detection results, thereby reducing false detection probability and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If blind detection is performed on control channel, then downlink control information can be obtained, but false detection occurs causing unnecessary operations
Solution Approach 1:
The patent applies preliminary action by performing blind detection on multiple subframes before final decision-making. The terminal detects DCI in multiple subframes and uses reconfirmation mechanism to validate the detection results, thereby reducing false detection while maintaining efficient information acquisition.
Solution Approach 2:
The patent implements feedback through the reconfirmation mechanism that validates detection results. The terminal feeds back the detection results of multiple subframes and uses this feedback to confirm whether the detected DCI is valid, thus improving detection accuracy while maintaining productivity.
2Measurement precision
If blind detection is performed on multiple subframes, then detection accuracy improves, but detection time increases
Solution Approach 1:
The patent performs blind detection on multiple subframes as a preliminary action to improve detection accuracy. By detecting DCI in multiple subframes beforehand and using reconfirmation mechanism, the system achieves higher accuracy while managing detection time through structured multi-subframe processing.
3Reliability
If reconfirmation mechanism is applied, then false detection probability reduces, but processing complexity increases
Solution Approach 1:
The patent uses feedback through the reconfirmation mechanism to improve detection reliability. The terminal validates detection results by comparing DCI across multiple subframes, providing feedback that confirms or rejects the detection, thereby reducing false detection with manageable processing complexity.
Solution Approach 2:
The patent applies copying by detecting DCI in multiple subframes and using the copied detection results for validation. The terminal creates multiple copies of detection results from different subframes and uses these copies to confirm the validity of the detected DCI, improving reliability without excessive complexity.
Data Source
AI summary
The disclosure relates to a blind detection method for a control channel, a terminal, and a storage medium. The method includes: obtaining downlink control information (DCI) of a plurality of subframes through blind detection of the control channel; and determining validity of the DCI of the plurality of subframes in repetition times adopted in blind detection of the control channel to obtain a decision result.