Data sending method, receiving method and device

Abstract

An embodiment of the invention provides a data transmitting method, a data receiving method and equipment. The transmitting method includes: dividing to-be-transmitted data blocks to obtain multiple source symbols; performing Fountain encoding on the source symbols, outputting multiple encoded symbols and transmitting the same to a receiving end, stopping Fountain encoding of the source symbols after a confirmation message returned by the receiving end is received, wherein the confirmation message is used for indicating that the receiving end successively receives the to-be-transmitted data block. By using the Fountain encoding, communication efficiency can be increased.

Description

Technical field [0001] The embodiments of the present invention relate to communication technologies, and in particular, to a data sending method, receiving method, and equipment. Background technique [0002] In the Machine Type Communication (MTC) service in the Long Term Evolution (LTE) system, some MTC terminals are installed in corners of buildings or surrounded by metal shells. Therefore, The loss of the communication path between the MTC terminal and its opposite device is relatively large. In order to improve the communication quality between the MTC terminal and its peer device, in the LTE research on MTC, the coverage of the MTC terminal is required to be 20dB stronger than that of the ordinary terminal. The 20dB increase in coverage means that a piece of data needs to be repeated about 100 times. [0003] In the communication process where a piece of data needs to be repeated about 100 times, if the transmitting end can repeat the bits that are subject to strong interfe...

AI Technical Summary

Problems solved by technology

However, due to the randomness of channel changes in the actual communication process, it is difficult for the transmitter to know which bits in the block of data received by the receiver are strongly interfered, so that it is impossible to know which bits should be repeated more

Therefore, the existing technology adopts limited rate channel coding technology, such as RM (Reed Muller, referred to as RM), convolutional code (Convolutional Coding, referred to as CC), etc., to encode the data, and then repeat the encoded data the same number of times After sending, this reduces the efficiency of communication

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