A data transmission method and communication device

A data transmission method and a technology of transmission blocks, which are applied in the field of data transmission methods and communication devices, and can solve problems such as reduced retransmission efficiency, impact on system performance, and decoding errors of coded blocks

Active Publication Date: 2021-12-31
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When interference occurs in certain positions or the probability of error is relatively high, for example, symbols at certain positions are punctured or symbols at certain positions perform automatic gain control while carrying service data, the coding blocks mapped to these positions are always Will cause decoding errors, resulting in reduced retransmission efficiency and affecting system performance

Method used

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

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Embodiment Construction

[0040] For purposes of the present application, technical solutions, and advantages of the embodiments more clearly, following with reference to the embodiments described herein in detail further implemented.

[0041] Technical solutions provided by the present embodiment may be applied to 5G application system, or to a future communication system, or other similar communication systems. Further, the present embodiment provides the application of the technical solution can be applied to cellular links, it may be applied to the link between the devices, such as device-to-device (device to device, D2D) link. V2X D2D link or links, the link may also be referred edges, side auxiliary link or downlink and the like. In the present application embodiment, the above terms refer to a link established between the same type of device, which is the same. Called the same type of device may be a link between the terminal device to the terminal device, and may be the link between the base statio...

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Abstract

A data transmission method and a communication device, which can be applied to scenarios such as Internet of Vehicles, unmanned driving, smart grids, and smart cities. The method includes: the sending device concatenates each data unit included in the transport block according to the transport block attribute information of the transport block to be sent, the sending device sends the transport block after the data units are concatenated, and the transport block attribute information includes the current value of the transport block The number of times or redundant versions that have been sent, and the data unit is a coded block or a set of coded blocks. In this way, when the number of times the transmission block has been sent or the redundancy version is changed, the concatenation sequence between the data units is also changed accordingly, which can play the role of diversity to a certain extent, so that the same coding block can be used in different During the transmission process, the degree of interference or damage is also different, which effectively improves the retransmission efficiency and decoding performance.

Description

Technical field [0001] The present application relates to the field of communication technology, and more particularly to a data transmission method and a communication device. Background technique [0002] In wireless communication, data transmission is usually performed in units of transport blocks. A transport block includes a plurality of encoded blocks, each coded block for independent cycle redundancy check (CRC), and channel coding. [0003] In the prior art, the initiation and retransmission of the transport block (TB) use the same processing flow, and each encoding block in one transport block is mapped to the order of time domain and frequency domain. When some position occurs or is relatively high, such as symbols of certain locations, the symbols of some locations are punched or automatically gain control while carrying traffic data, which is mapped to these locations. The error will be decoded, resulting in reduced retransmission efficiency, affecting system performa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/16
CPCH04L1/0064H04L1/0061H04L1/0071H04L1/1607H04L1/0057
Inventor 王俊伟
Owner HUAWEI TECH CO LTD
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