Method and device for sending data and method and device for receiving data

Abstract

Embodiments of the present application provide a method and a device for transmitting data. The method comprises: a transmitting device transmitting first data to a receiving device on first time-frequency resources, the first data comprising a first bit of bits obtained after a first information block is encoded; the transmitting device transmitting second data to the receiving device on second time-frequency resources, the second data being determined according to information of third time-frequency resources, and comprising a second bit of the bits obtained after the first information block is encoded or a first modulation symbol of modulation symbols obtained after the first information block is encoded and modulated, and the third time-frequency resources being some or all resources of the first time-frequency resources; and the transmitting device receiving feedback of the first information block from the receiving device, the feedback being obtained based on a result of combining and decoding of the first data and the second data, such that data transmission delay can be reduced.

Description

technical field [0001] The embodiments of the present invention relate to the communication field, and more specifically, to a method and device for sending data and a method and device for receiving data. Background technique [0002] Currently, there is a known feedback mechanism. After the receiving device receives the data sent by the sending device (hereinafter, for the sake of understanding and distinction, it will be denoted as: data #α), it needs to send feedback information determined according to the decoding result to the sending device. Moreover, when the receiving device fails to decode, the sending device needs to retransmit the data #α according to the feedback information, thereby improving the reliability of data transmission. [0003] However, with the development of communication technologies, certain services such as ultra-reliable / low latency communication (Ultra-reliable / low latency communication, “URLLC” for short) have relatively high requirements on ...

AI Technical Summary

Problems solved by technology

In this way, the sending device can know that the reliability of the scheduled victim service transmission will be reduced due to the occupation or multiplexing of the URLLC service. Take part of the data in data #α as the data of the victim service as an example, that is, although the sending device can determine The possibility of data #α decoding failure is very high. However, according to the existing feedback mechanism, the retransmission of this data #α still needs to be transmitted based on feedback information, resulting in an increase in the transmission delay of this data #α, thereby reducing The network throughput is reduced, resulting in a decline in the user experience of the victim business users

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