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

A false detection and blind detection technology, which is applied to the device dedicated to the receiver, error prevention, and forward error control, etc., can solve the problems of downlink HARQ feedback errors, errors, and unpredictable high-level status, so as to prevent PDCCH errors. detection, improve detection accuracy and system transmission efficiency, and improve the effect of user experience

Active Publication Date: 2021-11-09
BEIJING ZHILIANAN TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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specific Embodiment

[0104] Such as figure 2 A method for preventing PDCCH false detection is shown.

[0105] Step S201, execute steps S101 to S104. Determine the ratio of the different bits between the coded data and the result of the hard decision relative to the soft bit data, and determine the signal-to-noise ratio of the blind detection data.

[0106] Step S202, judging whether the ratio is greater than threshold 1, if yes, go to step S203, if not, go to step S205.

[0107] Step S203, judging whether the SNR is greater than the SNR threshold 3, if yes, go to step S204, if not, go to step S205;

[0108] In step S204, it is directly determined that it is a false detection, and the process ends.

[0109] Step S205, judging whether the SNR is less than the SNR threshold 3 and greater than the SNR threshold 4, if yes, go to step S206.

[0110] Step S206, judging whether the following two conditions are met at the same time: the Rmax of the configured PDCCH is less than the threshold 5, and th...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L25/03
CPCH04L1/0038H04L1/0039H04L1/0046H04L1/0061H04L1/0071H04L25/03312H04L25/03318
Inventor 李海莲吕悦川钱炜吕小平
Owner BEIJING ZHILIANAN TECH
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