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Physical downlink control channel blind detection method, user equipment and readable storage medium

A technology of physical downlink control and user equipment, applied in transmission path sub-channel allocation, wireless communication, signaling allocation, etc., can solve high complexity problems and achieve the effect of reducing complexity

Active Publication Date: 2020-06-16
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The UE will only blindly detect its own PDCCH from all PDCCH candidate positions, and the complexity is high

Method used

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  • Physical downlink control channel blind detection method, user equipment and readable storage medium
  • Physical downlink control channel blind detection method, user equipment and readable storage medium
  • Physical downlink control channel blind detection method, user equipment and readable storage medium

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Embodiment Construction

[0025] In the prior art, the UE only blindly detects its own PDCCH from all PDCCH candidate positions, and the complexity is relatively high.

[0026] In the embodiment of the present invention, the configuration information is obtained from the RRC signaling, and the specific location of each control channel element in the control resource set is determined, so as to determine the location of the PDCCH candidate. A blind detection operation is performed on the determined position of the PDCCH candidate to acquire the target PDCCH. When performing PDCCH blind detection, blind detection is performed from the first control channel unit in the control resource set to the last control channel unit in the control resource combination, which can effectively reduce the complexity of PDCCH blind detection.

[0027]In order to make the above objects, features and beneficial effects of the present invention more comprehensible, specific embodiments of the present invention will be descr...

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PUM

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Abstract

The invention discloses a physical downlink control channel blind detection method, user equipment and a readable storage medium, and the method comprises the steps: receiving an issued first RRC signal, and determining the aggregation level of a PDCCH; receiving an issued second RRC signaling; determining the specific position of each control channel unit in the control resource set according tothe configuration information in the second RRC signaling; determining the positions of all the PDCCH candidates, executing PDCCH blind detection operation, and obtaining a target PDCCH, wherein the position of the PDCCH candidate comprises an initial position of the PDCCH candidate and an aggregation level of the PDCCH, and the initial position of the PDCCH candidate is the initial position of the first control channel unit; executing blind detection operation of time domain sampling according to the target PDCCH, and obtaining a mapping position of downlink control information correspondingto the target PDCCH in a time domain sampling point. According to the scheme, the blind detection complexity of the PDCCH can be reduced.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for blind detection of a physical downlink control channel, user equipment, and a readable storage medium. Background technique [0002] In the new air interface (New Radio, NR) system, before receiving or sending services, the user equipment needs to know the downlink control information (Downlink Control Information, DCI) configured by the evolved base station (great NodeB, gNB). Channel (Physical Downlink Control Channel, PDCCH) bearer. [0003] A PDCCH can be formed by aggregation of 1, 2, 4, 8, 16, 32, 64 consecutive Control Channel Elements (CCEs), and the aggregation level of the PDCCH indicates how many control channel elements a PDCCH is composed of. The UE blindly detects downlink control information in a control resource set (CORESET). A CORESET is associated with a single search space, and a search space is a PDCCH set to be detected by the UE. A DCI m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L5/00H04W72/04
CPCH04L1/0038H04L1/0052H04L5/0094H04L5/0053H04W72/23H04L1/0033H04L5/0007H04L5/0092H04W72/044H04W72/0453H04W92/10H04W88/08H04W72/232H04W84/02H04W72/0446H04W88/02H04W72/231
Inventor 周欢王化磊
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD