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Data transmission method and equipment

A data transmission and transmission block technology, applied in digital transmission systems, transmission systems, error prevention/detection using return channels, etc., can solve the problems of low HARQ process efficiency and large service transmission delay, to ensure effectiveness, improve Use efficiency and avoid the effect of low business transmission efficiency

Pending Publication Date: 2022-02-18
CHINA ACADEMY OF INFORMATION & COMM
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Problems solved by technology

[0007] This application proposes a data transmission method and device to solve the problems of large service transmission delay and low HARQ process efficiency in the HARQ retransmission state configuration and timer operation mode used in the authorization-free PUSCH transmission in the prior art, and is especially suitable for NR evolution system supports ground-air communication and satellite communication

Method used

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  • Data transmission method and equipment
  • Data transmission method and equipment

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Embodiment Construction

[0051] In order to make the purpose, technical solution and advantages of the application clearer, the technical solution of the application will be clearly and completely described below in conjunction with specific embodiments of the application and corresponding drawings. Apparently, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0052] The present invention proposes a method and equipment for data transmission, which are mainly used in systems with large propagation delays such as ground-to-air communication or satellite communication.

[0053] This application divides the HARQ retransmission states corresponding to the PDSCH / PUSCH transmitted by each HARQ process into two types:

[0054] The fir...

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Abstract

The invention discloses a data transmission method. The method comprises the following steps: configuring N groups of independent unlicensed PUSCHs by using N first downlink signaling, wherein each first downlink signaling is configured with a group of unlicensed PUSCHs, and all HARQ process numbers configured by the group of unlicensed PUSCHs correspond to the same HARQ retransmission state; when the HARQ process numbers configured by the unlicensed PUSCHs are used for transmitting and receiving transmission blocks, starting or restarting a corresponding timer; before the timer is overtime, applying a target HARQ process number to transmitting or retransmitting of a first transmission block; after the timer is overtime, allowing the target HARQ process number to be used for a second transmission block or to be in an idle state. The invention further comprises a device used for the method. The problems of large service transmission delay and low HARQ process efficiency existing in HARQ retransmission state configuration and a timer operation mode used in unlicensed PUSCH transmission in the prior art are solved, and the method is particularly suitable for an NR evolution system to support ground-air communication and satellite communication.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a data transmission method and device. Background technique [0002] The NR evolution system supports ground-to-air communications and satellite communications. Due to the wider coverage, the air propagation delay of HARQ-ACK information feedback and the retransmission process of HARQ process data will be greatly extended. If the HARQ process combination based on HARQ-ACK feedback is still adopted in ground-air communication and satellite communication, data transmission delay is unacceptable for some services. [0003] In order to overcome the impact of data transmission delay, after the network device schedules the HARQ process for the initial transmission of the transmission block, it can schedule the retransmission of the transmission block again without waiting for the received and demodulated HARQ-ACK result of the transmission block. To meet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/1812H04L1/188H04L1/1896H04L1/1848H04L1/1864
Inventor 闫志宇魏贵明徐菲杜滢刘晓峰焦慧颖沈霞
Owner CHINA ACADEMY OF INFORMATION & COMM
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