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Blind detection method and communication device for search space

A technology of search space and blind detection, which is applied in the field of blind detection methods of search space and communication devices, and can solve the problems that the blind detection process cannot meet the requirements of blind detection

Active Publication Date: 2021-08-31
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the blind detection process of the terminal cannot meet the blind detection requirements in the PDCCH repetition scenario, so the blind detection process needs to be improved accordingly

Method used

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  • Blind detection method and communication device for search space
  • Blind detection method and communication device for search space
  • Blind detection method and communication device for search space

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Experimental program
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Effect test

Embodiment 1

[0110] Such as image 3 As shown, it is a blind detection method of a search space provided in the embodiment of the present application, the method includes the following steps:

[0111] S101. The network device sends first indication information corresponding to the first search space set to the terminal. Correspondingly, the terminal receives first indication information corresponding to the first search space set.

[0112] Wherein, the first indication information is used to indicate one or more search space groups, and at least one search space in a search space group belongs to the first search space set. It can be understood that the first search space set is any search space set, which is not limited in this embodiment of the present application.

[0113] Optionally, the first indication information is carried in radio resource control (radio resource control, RRC) signaling. Alternatively, the first indication information is carried in PDCCH configuration signaling...

Embodiment 2

[0291] Such as Figure 34 As shown, another search space blind detection method provided by the embodiment of the present application includes the following steps:

[0292] S201. The network device determines at least one search space group corresponding to the first search space set.

[0293] It can be understood that the at least one search space group corresponds to the first search space set, and the at least one search space group may be configured by high-layer signaling, or configured by the network device itself. Wherein, the high-level signaling refers to signaling of a high-level protocol layer, such as radio link control (radio link control, RLC) signaling, and this embodiment of the present application is not limited thereto.

[0294] S202. The network device determines, according to at least one search space group, the number of times of blind detection corresponding to the first search space set.

[0295] Wherein, for a specific implementation manner of step S2...

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Abstract

The present application provides a search space blind detection method and a communication device. The method includes: the terminal receives indication information corresponding to the first search space set sent by the network device, the indication information is used to indicate one or more search space groups, and one search space group The space group is composed of at least two search spaces with an association relationship, and at least one search space in a search space group belongs to the first search space set; then, the terminal determines the number of blind detections corresponding to the first search space set according to the indication information. The number of times of blind detection corresponding to the first set of search spaces takes into account the correlation between multiple search spaces, so the number of times of blind detection corresponding to the first set of search spaces can be applicable to a scenario of PDCCH repetition.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a blind detection method and a communication device of a search space. Background technique [0002] With the rapid development of mobile communication technology, communication systems have higher requirements for reliability. Taking the ultra-reliable & low latency communication (uRLLC) service of the fifth generation (5th generation, 5G) communication system as an example, the reliability required by the uRLLC service is as high as 99.999%. In order to meet the requirements of high reliability, the industry considers to adopt the physical downlink control channel (physical downlink control channel, PDCCH) repetition (repetition) scheme to improve the reliability of the PDCCH, that is, to send in different search spaces (searchspace, SS) The same downlink control information (downlink control information, DCI) is used to improve the DCI blind detection succ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0026H04L1/0038H04L5/0094H04L5/0053
Inventor 杭海存葛士斌纪刘榴王潇涵毕晓艳
Owner HUAWEI TECH CO LTD