Downlink physical control channel detecting method and device

A technology of physical control channel and detection method, applied in the field of wireless communication, can solve the problems of high complexity of blind detection and waste of resources, etc.

Active Publication Date: 2019-03-19
WUHAN HONGXIN TECH DEV CO LTD
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Problems solved by technology

[0003] At present, most of the existing PDCCH blind detection methods are suitable for LTE systems, but not for NR systems. In NR systems, due to the large bandwidth of the system, if the PDCCH still occupies the entire bandwidth, it will not only waste resources, but also increase the complexity of blind detection. also big

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  • Downlink physical control channel detecting method and device
  • Downlink physical control channel detecting method and device
  • Downlink physical control channel detecting method and device

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[0071] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0072] Compared with the LTE system, the structure of the downlink physical control channel PDCCH in the new wireless NR system has been changed. If the detection method of the downlink physical control channel PDCCH in the LTE system is continued, the processing complexity of the base station and the terminal will increase. Based on this The embodiment discloses a method for detecting a downlink physical control channel applied to a user terminal in an NR syst...

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Abstract

The invention provides a downlink physical control channel detecting method applied to a user terminal in a new wireless NR system. The method comprises the following steps of: determining available aggregation levels according to the total number of control channel elements (CCE) in a control resource set CORESET occupied by a physical downlink control channel (PDCCH); determining the number of candidate sets corresponding to the available aggregation levels according to candidate set selection rules corresponding to search space types; selecting each of the available aggregation levels and the number of the candidate sets corresponding to the available aggregation levels, and performing PDCCH blind detection until the blind detection succeeds; and obtaining downlink control information (DCI) corresponding to the aggregation levels and the number of the candidate sets in the blind detection. The downlink physical control channel detecting method and device are easy to implement, support flexible and diverse configuration of the NR system, and achieve a better detection effect with lower complexity.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more specifically, to a method and device for detecting a downlink physical control channel. Background technique [0002] 5G is the research and development focus of the communication industry in recent years. 5G will meet the requirements of 20Gbit / s fiber-like access rate, millisecond-level delay service experience, connection capability of hundreds of billions of devices, ultra-high traffic density and connection density, and a hundred times network 5G system design faces new challenges such as extreme indicators such as energy efficiency improvement, and how a system can meet various business needs at the same time. [0003] At present, most of the existing PDCCH blind detection methods are suitable for LTE systems, but not for NR systems. In NR systems, due to the large bandwidth of the system, if the PDCCH still occupies the entire bandwidth, it will not only was...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/00
CPCH04L1/0038H04L1/0057H04L1/0061H04L5/0053
Inventor 解东瑞
Owner WUHAN HONGXIN TECH DEV CO LTD
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