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Method and device for judging error detection of physical downlink control channel

A technology of physical downlink control and false detection, applied in the field of communication, can solve problems such as unpredictable high-level state, system operation failure, downlink HARQ feedback error, etc., and achieve the effect of reducing the probability of PDCCH false detection.

Active Publication Date: 2012-09-19
SANECHIPS TECH CO LTD
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Problems solved by technology

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 judging error detection of physical downlink control channel
  • Method and device for judging error detection of physical downlink control channel
  • Method and device for judging error detection of physical downlink control channel

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Embodiment Construction

[0012] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0013] figure 1 It is a flowchart of a method for judging false detection of a physical downlink control channel according to an embodiment of the present invention. like figure 1 As shown, the method for judging the false detection of the physical downlink control channel according to the embodiment of the present invention includes:

[0014] Step S102, performing a hard decision on the soft bit data output after de-rate matching;

[0015] Step S104, performing decoding and cyclic redundancy check on the above-mentioned soft bit data, and encoding the decoded data that passed the cyclic redundancy check;

[0016] Step S106, comparing the above-mentioned encoded data with the result of the above-...

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Abstract

The invention discloses a method and a device for judging an error detection of a physical downlink control channel. The method comprises the following steps: making a hard decision on a soft-bit data output after a rate de-matching; decoding the soft-bit data and carrying out cyclic redundancy check, coding the decoded data after the cyclic redundancy check; comparing the coded data with the result of the hard decision, calculating the ratios of different bits between the coded data and the result of the hard decision to the soft-bit data; judging whether the ratio is greater than a scheduled threshold value or not, if so, judging to be error detection. According to the technical scheme, the problem that PDCCH (physical downlink control channel) error detection can not occur under an LTE (long term evolution) system can be solved, and the probability of the occurrence of the PDCCH error detection is greatly reduced.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for misdetection and judgment of a physical downlink control channel. Background technique [0002] Under LTE (Long Term Evolution, long-term evolution system), PDCCH (Physical Downlink Control Channel, physical downlink control channel) is mainly used to carry various DCI (Downlink Control Information, downlink control information), and its basic unit is CCE (Control Channel Element , control channel unit), all UEs (User Equipment, user equipment) in the cell share the CCE space, and 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. 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,...

Claims

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Application Information

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IPC IPC(8): H04L1/00
Inventor 马宁胡艳辉
Owner SANECHIPS TECH CO LTD
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