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Blind detection method and device based on polar code

A blind detection and polar code technology, applied in the field of communication, can solve the problems of high number of blind detections and low efficiency

Active Publication Date: 2020-10-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of blind detection based on polar codes, it is necessary to perform multiple blind detections for various possible DCI formats, which has the problem of high number of blind detections and low efficiency.

Method used

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  • Blind detection method and device based on polar code
  • Blind detection method and device based on polar code
  • Blind detection method and device based on polar code

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Embodiment Construction

[0082]The embodiments of the present application can be applied to wireless communication systems. It should be noted that the wireless communication systems mentioned in the embodiments of the present application include but are not limited to: Narrow Band-Internet of Things (NB-IoT), Global Mobile Communication system (Global System for Mobile Communications, GSM), enhanced data rate for GSM Evolution system (Enhanced Data rate for GSM Evolution, EDGE), wideband code division multiple access system (Wideband Code Division Multiple Access, WCDMA), code division multiple access 2000 system (Code Division Multiple Access, CDMA2000), time division synchronous code division multiple access system (Time Division-Synchronization Code Division Multiple Access, TD-SCDMA), long term evolution system (Long Term Evolution, LTE) and the next generation 5G mobile communication system.

[0083] The communication system in this embodiment of the present application may include a receiving de...

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Abstract

Provided in the embodiment of the present invention are a blind detection method and a device based on polarization code. The method comprises: a receiving device acquires blind detection information, wherein the blind detection information comprises at least a length of a first information bit sequence in a first to-be-decoded sequence corresponding to downlink control information (DCI) in a first format, and a location of a first frozen set, as well as a length of a second information bit sequence in a second to-be-decoded sequence corresponding to a DCI in a second format and a location of the second frozen set, the first to-be-decoded sequence and the second to-be-decoded sequence being at the same length; and the receiving device performs the blind detection on a candidate physical downlink control channel PDCCH according to the blind detection information to obtain the DCI sent by the sending device. The embodiment of the present application can reduce the number of blind detections and improve the blind detection efficiency.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and in particular to a polar code-based blind detection method and device. Background technique [0002] In a Long Term Evolution (LTE) system, before receiving or sending data, a terminal device needs to know the downlink control information (Downlink control channel, DCI) configured by the base station for the terminal device, and the DCI is passed through the physical downlink control channel ( Physical Downlink Control channel, PDCCH) bearer. [0003] In the prior art, since PDCCH has different formats, each format corresponds to a different control channel element (Control Channel Element, CCE) aggregation level, where the aggregation level indicates the number of consecutive CCEs occupied by one PDCCH. When the terminal device detects the DCI, since the terminal device does not know which format of the DCI is carried by the PDCCH, nor does it know which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0023H04L1/0038H04L1/0057H04L1/0079H04L1/00
Inventor 刘荣科孙贺王桂杰
Owner HUAWEI TECH CO LTD