Method and device for preventing false detection of PDCCH and readable storage medium

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

Active Publication Date: 2021-08-13
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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  • Method and device for preventing false detection of PDCCH and readable storage medium
  • Method and device for preventing false detection of PDCCH and readable storage medium
  • Method and device for preventing false detection of PDCCH and readable storage medium

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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 invention provides a method and a device for preventing false detection of a PDCCH and a readable access medium. The method comprises the following steps: performing hard decision on soft bit data output after performing rate de-matching on blind detection data; decoding and cyclic redundancy check are carried out on the soft bit data, and the data passing through the cyclic redundancy check are coded; comparing the coded data with a hard decision result, and calculating the ratio of different bits between the coded data and the hard decision result relative to soft bit data; when it is judged that the ratio is larger than or equal to a preset first threshold value and the blind detection data meet a first condition, or when the ratio is smaller than the preset first threshold value and the blind detection data meet a second condition, different bit numbers between bit information of the blind detection data and bit information of the PDCCH successfully detected last time in historical information are determined; determining a difference representation value according to different bit numbers; and determining that PDCCH false detection is generated when judging that the difference characterization value is greater than a second threshold value. According to the invention, the situation of false detection of the PDCCH can be prevented.

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 Applications(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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