Pdcch blind detection method for snr mean value feedback and cces energy judgment in 5g

A technology of energy judgment and average value, which is applied in the field of communication, can solve the problems of low blind detection efficiency, achieve high blind detection efficiency, improve accuracy, and improve blind detection efficiency

Active Publication Date: 2022-03-11
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Although this method is simple and does not require additional computational overhead, blind detection is very inefficient

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  • Pdcch blind detection method for snr mean value feedback and cces energy judgment in 5g
  • Pdcch blind detection method for snr mean value feedback and cces energy judgment in 5g
  • Pdcch blind detection method for snr mean value feedback and cces energy judgment in 5g

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Embodiment Construction

[0049] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0050] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

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Abstract

The invention relates to a PDCCH blind detection method for SNR mean value feedback and CCEs energy judgment in 5G, belonging to the technical field of communication. ① Aggregation level priority selection method based on SNR average value feedback: According to the reported CQI period T and the reported CQI value, calculate the average value of the previous n signal-to-noise ratio SNR, corresponding to different aggregation levels. In case the first aggregate level check fails, determines whether the aggregate levels are searched in increments or decrements. ② CCE decision method based on the energy of CCEs candidate sets: According to the method described in ①, enter the PDCCH under the corresponding aggregation level to decide whether to carry the DCI message required by the UE. When the detection fails or it is judged that there is no DCI, the maximum value of energy statistics calculated twice is the same as the energy of the next CCE candidate set, until the blind detection succeeds or all judgments at the aggregation level are completed. The invention has stable performance, low computational complexity and high blind detection efficiency.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a PDCCH blind detection method for SNR mean value feedback and CCEs energy judgment in 5G. Background technique [0002] The physical downlink control channel (PhysicalDownlinkControlChannel, PDCCH) of the 5G system is the controller for scheduling uplink and downlink resources of the system, and carries the downlink control information (DCI) of one or more terminals (UserEquipment, UE). In order to reduce the signaling overhead on the air interface and save wireless resources, the base station will not inform the UE of the DCI type carried by the PDCCH and the position of the corresponding Control Channel Elements (CCE) in the time-frequency resource when sending the PDCCH. The UE needs to perform blind detection on the entire area, and this control area is called a control resource set (ControlResourceSet, CORESET) in 5G. [0003] In the 5G system, the search space is simi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04W72/04
CPCH04L1/0038H04L1/0061H04W72/23
Inventor 张治中王玲杨钦雲胡玲玲
Owner CHONGQING UNIV OF POSTS & TELECOMM
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