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PDCCH detection method and device and user equipment

A detection method and a technology of preset values, which are applied to devices dedicated to receivers, transmission modification based on link quality, advanced technology, etc., can solve problems such as low efficiency and high complexity of blind detection, and achieve improved The effect of blind detection efficiency, reducing the number of blind detections, and reducing the complexity of blind detection

Pending Publication Date: 2021-06-29
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the channel quality is poor and the network sends the PDCCH according to AL16, then the UE needs almost 4+4+2+2=12 blind detection times to solve the PDCCH. The complexity of blind detection is relatively large, and the efficiency of blind detection is low.

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  • PDCCH detection method and device and user equipment
  • PDCCH detection method and device and user equipment
  • PDCCH detection method and device and user equipment

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. 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.

[0037] An embodiment of the present invention provides a PDCCH detection method, the method is applied to user equipment, such as figure 1 As shown, the method includes:

[0038] S11. After accessing the NR cell, the UE measures downlink channel quality.

[0039] S12. According to the quality of the downlink channel, the UE demodulates the ...

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Abstract

The invention provides a PDCCH detection method and device and user equipment. The method comprises the following steps: measuring downlink channel quality after accessing an NR cell; and according to the quality of the downlink channel, demodulating the candidate PDCCHs corresponding to the aggregation levels according to the sequence of the aggregation levels from small to large or from large to small in the search space until the PDCCHs sent by the network side are detected. According to the invention, the order of the aggregation levels of the PDCCH can be automatically adjusted and demodulated according to the downlink channel quality, so that the number of blind detection times is reduced, the blind detection complexity is reduced, and the blind detection efficiency is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a PDCCH detection method, device and user equipment. Background technique [0002] In 5G NR, the frequency domain scheduling position of PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) and the number of time domain OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbols are included in CORESET (control resource set) , the time domain start symbol information and the monitoring period information are included in the SearchSpace (search space), at this time the UE only knows that the PDCCH will be sent within the RB (Resource Block, Resource Block) range of the COERSET, but it cannot determine which RBs to send. Therefore, after determining the physical resource and search space of the PDCCH, the UE will search for the PDCCH on the CORESET according to different RNTI (Radio Network Te...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04W24/08
CPCH04L1/0038H04W24/08Y02D30/70
Inventor 陈雷
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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