PUSCH repeated transmission scheduling method and device for unlicensed frequency band, storage medium and terminal

An unlicensed frequency band and repeated transmission technology, which is applied in the fields of PUSCH repeated transmission scheduling method and device, terminal, and storage medium, can solve problems such as being unable to meet business requirements, unable to support PUSCH repeated transmission, and affecting user experience

Active Publication Date: 2022-01-25
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When it is necessary to transmit service data with strict reliability and delay requirements in the unlicensed frequency band, the existing tec

Method used

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  • PUSCH repeated transmission scheduling method and device for unlicensed frequency band, storage medium and terminal
  • PUSCH repeated transmission scheduling method and device for unlicensed frequency band, storage medium and terminal
  • PUSCH repeated transmission scheduling method and device for unlicensed frequency band, storage medium and terminal

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Embodiment Construction

[0031] As mentioned in the background, although the prior art can schedule multiple PUSCHs through DCI in the unlicensed spectrum, it does not support the PUSCH repeated transmission mechanism.

[0032] Specifically, the DCI format for scheduling the PUSCH in the NR system includes DCI0_0, DCI0_1 and DCI0_2. Regardless of the DCI format, it may include a time domain resource assignment (Time domain resource assignment) field, which is used to notify the user equipment (User Equipment, referred to as UE) of the time domain resource location of the PUSCH that is authorized to use.

[0033] For example, the DCI used to schedule PUSCH may indicate a row index pointing to a table dedicated to UE time domain resources. This table provides Orthogonal Frequency Division Multiplexing (OFDM) symbols for PUSCH transmission, which may include the start OFDM symbol (denoted as S) and the allocated OFDM symbol length (denoted as L) (collectively referred to as SLIV ), the time slot offset ...

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Abstract

The invention discloses a PUSCH repeated transmission scheduling method and device for an unlicensed frequency band, a storage medium, and a terminal. The method comprises the steps: receiving DCI, wherein the DCI schedules one or more PUSCHs, and at least one schedules PUSCH being repeated transmission; determining a time domain initial position and length of each scheduled PUSCH according to the DCI; and for each scheduled PUSCH, determining the number of repeated transmission times of the scheduled PUSCH according to the time domain initial position and length of the scheduled PUSCH and the time domain initial position of the next scheduled PUSCH. Through the scheme of the invention, the repeated transmission of the PUSCH can be realized in the unlicensed frequency spectrum, and when the PUSCH which is allowed to be repeatedly transmitted is scheduled through the DCI, the repeated transmission times of the scheduled PUSCH can be effectively determined, and the high reliability and low time delay of service transmission in the unlicensed frequency band are further improved.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a PUSCH repeated transmission scheduling method and device, a storage medium, and a terminal for unlicensed frequency bands. Background technique [0002] The 3rd Generation Partnership Project (3GPP) standards organization has studied how to deploy New Radio (NR, also known as New Wireless) networks on unlicensed spectrum, so as to achieve fair and effective use The purpose of the unlicensed spectrum is to increase the data transmission rate of the NR system. All data transmission in the unlicensed spectrum needs to adopt a listen before talk (LBT for short) mechanism, so as to reduce the impact on other systems. [0003] For the situation where the physical downlink data channel (also known as the physical downlink shared channel, PDSCH for short) and the uplink feedback channel in the unlicensed spectrum are in different continuous occupation time (Contin...

Claims

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Application Information

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IPC IPC(8): H04W28/02H04W72/12H04L1/18
CPCH04W28/0231H04W72/12H04L1/1812H04W28/02H04L1/18H04W74/04
Inventor 周欢
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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