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A data transmission method and device

A data transmission method and data technology, applied in digital transmission systems, transmission systems, adjustment of transmission rates, etc., can solve problems such as the weakening of the effect of reliability improvement and the inability to cope with changes in channel quality over time, so as to improve reliability. Effect

Active Publication Date: 2021-10-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, if the same transmission parameters are used for multiple repeated transmissions, it will not be able to cope with the change of channel quality over time, resulting in a weakened effect of repeated transmissions on improving reliability.

Method used

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  • A data transmission method and device
  • A data transmission method and device
  • A data transmission method and device

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Embodiment Construction

[0049] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0050] figure 1 A communication system 100 to which the embodiment of the present application is applied is shown. The communication system 100 may include at least one radio access network device 110 and multiple terminal devices 120 located within the coverage of the radio access network device 110 . figure 1 One wireless access network device and two terminal devices are exemplarily shown. Optionally, the communication system 100 may include multiple wireless access network devices and each wireless access network device may include other The number of terminal devices is not limited in this embodiment of the present application.

[0051] Optionally, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, to which this embodiment of the pre...

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Abstract

The present application provides a data transmission method and device. The method includes: the first device sends a first signal to the second device, the first signal includes a first data signal and a first pilot signal, and the first data signal is generated according to a first transmission parameter; The first device receives first information from the second device in response to the first signal; the first device sends a second signal to the second device after receiving the first information, and the first device The second signal includes a second data signal and a second pilot signal, and the second data signal is generated according to a second transmission parameter; wherein, the first data signal and the second data signal carry the same transmission block. By implementing this manner, the reliability of the second signal / subsequent transmission can be improved.

Description

technical field [0001] The present application relates to the field of mobile communications, in particular to a data transmission method and device. Background technique [0002] Compared with the 4G communication system, a major feature of the 5G communication system is the added support for Ultra-Reliable and Low Latency Communication (URLLC). URLLC also requires the system to have low latency and high reliability performance. Repeating the transmission multiple times can improve the reliability of the system. For example, the number of times of retransmission and the modulation and coding mode that need to be retransmitted can be determined according to the channel quality before data transmission, and the reliability gain can be obtained by repeating the transmission multiple times. [0003] However, if the same transmission parameters are used for multiple repeated transmissions, it will not be able to cope with changes in channel quality over time, resulting in a we...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L5/00H04W28/18
CPCH04L1/0023H04L1/0026H04L5/0048H04W28/18H04L1/0027H04L1/0003H04L1/0009H04L1/189H04W52/48H04L5/0057H04L5/0055H04L5/0051H04L1/1867H04W72/23
Inventor 温容慧吕永霞
Owner HUAWEI TECH CO LTD