Method and device for data transmission

Abstract

The present application discloses a data transmission method, including: a network device determines control information, and the control information includes a first field, a second field, and at least one third field; wherein, the first field is used to indicate the transmission block to be transmitted Quantity; the second field includes antenna port configuration information, the length of the second field is related to the number of transport blocks; the third field includes configuration information of transport blocks, and the number of the third field is related to the number of transport blocks; the network device sends to the terminal Control information; the network device transmits data with the terminal according to the control information. The scheme provided by the present application can flexibly determine the length of the second field used to indicate the antenna port configuration information and the number of the third field used to indicate the configuration information of the transport block in the control information according to the number of transport blocks to be transmitted, so that The flexibility of setting the format of the control information is improved, and the signaling overhead of the control information is saved in various scenarios.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a method and device for data transmission. Background technique [0002] In the long-term evolution (English full name: long term evolution, English abbreviation: LTE) system, the transmitter physical (English full name: physical, English abbreviation: PHY) layer : MAC) after a transmission block (English full name: transport block, English abbreviation: TB), after CRC addition, channel coding, rate matching, code block concatenation and other transmission block processing links, a string of bit data is generated. The bit data is called a codeword (English full name: codeword, English abbreviation: CW) in the LTE system. [0003] In the current LTE system, simultaneous transmission of up to two transport blocks is supported, and the number of codewords is equal to the number of transport blocks. Such as figure 1 As shown, taking the downlink transmission o...

AI Technical Summary

Problems solved by technology

[0018] As an example to solve the problem of inflexible format setting of control information in the process of data transmission in the prior art, the embodiment of the present application provides a data transmission method, which can flexibly determine the format used in the control information according to the number of transmission blocks to be transmitted. The length of the second field used to indicate the antenna port configuration information and the number of the third field used to indicate the configuration information of the transport block, thereby improving the flexibility of the control information format setting, and saving control information in various scenarios. signaling overhead

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