Method and device for determining PDSCH reception beam, storage medium and terminal

A technology for receiving beams and determining methods, which is applied in the field of communication and can solve the problems of no determination of receiving and transmitting beams, no standardization of repeated transmission of PDCCH, etc.

Active Publication Date: 2020-05-29
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to improve the transmission reliability of PDCCH, 3GPP discussed the method of using PDCCH repeated transmission to improve the reliability of PDCCH in the research stage of the new radio technology standard version 16 (new radio release 16, Rel-16), but finally did not repeat the PDCCH The transmission is standardized, and there is no method for judging the transmit and receive beams used by each PDSCH

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  • Method and device for determining PDSCH reception beam, storage medium and terminal
  • Method and device for determining PDSCH reception beam, storage medium and terminal
  • Method and device for determining PDSCH reception beam, storage medium and terminal

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Embodiment Construction

[0030] As mentioned above, the protocol only supports each PDCCH to independently schedule different PDSCHs to send downlink data, and does not yet support multiple PDCCHs to schedule the same PDSCH. In order to improve the transmission reliability of the PDCCH, 3GPP discussed the method of using the repeated transmission of the PDCCH to improve the reliability of the PDCCH in the research stage of the Rel-16 version.

[0031] Specifically, in the discussion process of NR Rel-16 version, the ways of scheduling PDSCH by repeated transmission of PDCCH can be divided into the following three ways, assuming that N>1 repeated transmission of PDCCH is used to schedule M≥1 PDSCH, and M PDSCHs carry The same downlink data:

[0032] -Mode 1: each PDCCH schedules a different PDSCH, and M=N;

[0033] - Mode 2: Each PDCCH schedules K unsent PDSCHs, and 1≤K≤M;

[0034] -Mode 3: Each PDCCH schedules the same M PDSCHs, ie K=M.

[0035] After research, the inventors of the present inventio...

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Abstract

Provided are a method and a device for determining a PDSCH reception beam, a storage medium, and a terminal. The method comprises: receiving one or more PDCCHs and determining a PDSCH to be received,the PDSCH being repeatedly scheduled by the one or more PDCCHs; determining the duration from the last symbol of the PDCCH for scheduling the PDSCH to the first symbol of the PDSCH; if the duration isless than the preset duration, receiving the PDSCH by adopting a first receiving beam; if the duration is greater than or equal to the preset duration, receiving the PDSCH by adopting a second receiving beam; wherein the first receiving wave beam is the same as or different from the second receiving wave beam. According to the method, the terminal can judge the transceiving beam adopted by each PDSCH, and the consistency and accuracy of understanding the PDSCH transceiving beams by the base station and the terminal are ensured, so that the PDSCH receiving success rate is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for determining a PDSCH receiving beam, a storage medium, and a terminal. Background technique [0002] In the high-band scenario, according to the new radio (NR) protocol, the base station and the terminal determine the optimal transmit and receive beam through the beam training process, so as to improve the transmission reliability of the uplink and downlink signals by using the optimal transmit and receive beam. During the beam training process, the terminal will save the receiving beam corresponding to each reported sending beam. During the process of scheduling the physical downlink shared channel (PDSCH) on the physical downlink control channel (PDCCH), the TCI field carried in the PDCCH indicates the transmission beam information of the PDSCH, and the terminal can transmit beam information according to the transmission beam information t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04W72/04
CPCH04W24/02H04W72/046H04B7/00H04L5/0044H04L5/0053H04L5/0023H04W76/15H04W72/23H04W72/0446
Inventor 马大为
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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