Communication method and device

Abstract

The embodiment of the present application discloses a communication method and device, which relate to the field of communication, can reduce the bit error rate and improve the receiving performance in the scene of rapid change of the wireless channel, and can be applied to the Internet of Vehicles, such as V2X, LTE‑V, V2V Wait. The method includes: the first terminal device maps the first data to be sent to consecutive M symbols in a time slot, wherein the first data is mapped to the second symbol of the M symbols to On the last symbol of the M symbols, and the data mapped on the first symbol of the M symbols is the same as the data mapped on the second symbol of the M symbols, and send to the second The terminal device sends the time slot carrying the first data.

Description

[0001] This application is a divisional Chinese patent application with the application number 201910252651.2 and the application name "communication method and device", which was submitted to the State Intellectual Property Office on March 29, 2019, the entire contents of which are incorporated into this application by reference. technical field [0002] The present application relates to the field of communication, and in particular, to a communication method and device. Background technique [0003] At present, in application scenarios such as intelligent transportation and unmanned driving, vehicle-to-everything (V2X) communication technology is often involved. Among them, V2X may include vehicle to vehicle (V2V), vehicle to pedestrian (V2P), or vehicle to infrastructure (V2I), etc. However, in view of the fast and slow moving speed of the vehicle, the wireless channel environment between terminal devices such as in-vehicle equipment and mobile phones changes drastically...

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned mapping method of first time domain and then frequency domain can be regarded as an interleaving intersymbols (interleavinginter symbols) technology. Although it is helpful to reduce the bit error rate, it requires the second terminal device to receive all symbols on the time slot. After that, demodulation & decoding can be started, and the processing delay of the second terminal device is relatively large, which is not applicable to the above-mentioned application scenarios where the wireless channel changes rapidly

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