A method, device and readable storage medium for preventing pdcch false detection

Abstract

The present disclosure provides a method, device and readable access medium for preventing false detection of PDCCH, including: performing hard judgment on the soft bit data output after performing rate matching on the blind detection data; decoding and looping the soft bit data Redundancy check, encode the data after passing the cyclic redundancy check; compare the encoded data with the result of the hard judgment, and calculate the ratio of the different bits between the two to the soft bit data; judge When the ratio is greater than or equal to a predetermined first threshold and the blind detection data meets the first condition, or, when the ratio is less than the predetermined first threshold and the blind detection data meets the second condition, determine the bit information of the blind detection data The number of bits different from the bit information of the last successfully detected PDCCH in the historical information; determining the difference characteristic value according to the different number of bits; determining that a PDCCH misdetection occurs when the difference characteristic value is greater than the second threshold value. The present disclosure can prevent the occurrence of PDCCH false detection.

Description

technical field [0001] The present disclosure relates to the technical field of wireless communication, and in particular to a method, device and readable storage medium for preventing PDCCH false detection. Background technique [0002] The physical downlink control channel (PhysicalDownlinkControlChannel, PDCCH) is mainly used to carry various downlink control information (DownlinkControlInformation, DCI), its basic unit is the control channel element (ControlChannelElement, CCE), all user equipment (UserEquipment, UE) in the cell share CCE Space, each UE needs to perform blind detection on the CCE space to search out the control information of the UE. However, not all CCEs must be allocated to UEs, and some CCEs may not bear any data. [0003] On the terminal side, since it does not know which CCEs are occupied by its own PDCCH, it detects the CCEs corresponding to all possible PDCCH candidates. When the CCE does not carry data, the terminal detects completely white nois...

AI Technical Summary

Problems solved by technology

[0004] PDCCH misdetection may lead to system failure, unexpected data transmission and reception, downlink HARQ feedback errors, and even unpredictable errors in high-level states. Therefore, in order to improve system robustness, it is necessary to avoid PDCCH misdetection

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