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Blind detection method and device based on polarization codes

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: 2019-09-17
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the blind detection process based on polar codes, multiple blind detections need to be performed 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 polarization codes
  • Blind detection method and device based on polarization codes
  • Blind detection method and device based on polarization codes

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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 Synchronization Code Division Multiple Access system (Time Division-Synchronization Code Division Multiple Access, TD-SCDMA), Long Term Evolution system (LongTerm Evolution, LTE) and the next generation of 5G mobile communication system.

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

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Abstract

The embodiment of the invention provides a blind detection method and device based on polarization codes. The blind detection method comprises the following steps: a receiving device obtains blind detection information, wherein the blind detection information at least comprises the length of a first information bit sequence in a first to-be-decoded sequence corresponding to DCI of a first format, the position of a first freezing set, the length of a second information bit sequence in a second to-be-decoded sequence corresponding to DCI of a second format and the position of a second freezing set, and the lengths of the first to-be-decoded sequence and the second to-be-decoded sequence are the same; and the receiving device performs blind detection on a candidate physical downlink control channel (PDCCH) according to the blind detection information so as to obtain the DCI sent by the sending device. The blind detection method can reduce the blind detection frequency, and can 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 a terminal device detects DCI, since the terminal device does not know which format of DCI the PDCCH carries, nor does it know which format of the P...

Claims

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Application Information

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Patent Type & Authority Applications(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
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