Transmission method and device of synchronization signal block

Abstract

Provided are a transmission method and device of a synchronization signal block, which relate to the field of communications and can improve the decoding performance and channel estimation accuracy of a PSBCH payload. The method comprises the following steps that: a first terminal device generates a sidelink synchronization signal block; the first terminal device sends a sidelink synchronization signal block to a second terminal device, wherein the sidelink synchronization signal block comprises a PSBCH, an SPSS and an SSSS, the PSBCH comprises M OFDM symbols in the time domain, the PSBCH comprises DMRS, the DMRS comprises K OFDM symbols in the M OFDM symbols in the time domain, the DMRS is mapped every n-1 subcarrier in the frequency domain, n is an integer greater than or equal to 1, M is an integer greater than or equal to 6, K is a positive integer less than or equal to M, the PSBCH comprises N RBs in the frequency domain, and N is an integer greater than 6; the SPSS or SSSS includes two OFDM symbols in the time domain, respectively, and includes N RBs in the frequency domain. The embodiment of the invention is applied to an NR V2X scene.

Description

[0001]The present application is based on April 30, 2019, the application number is 201910361704.4, and the application name is a score application proposed by the application name "a transmission method of synchronous signal block". All content is incorporated herein. In the present application.Technical field[0002]The present application relates to the field of communication, and more particularly to transmission methods and apparatus for synchronous signal blocks.Background technique[0003]In the car and anything in Vehicle TO X, V2X, two kinds of spaces are defined. The first is the UTRAN and the UTRAN and the User Equipment, a UE) interface, which is simply referred to as the UU interface. The UU interface adopts the communication protocol between the UE and the base station; the second is the PROXIMITY Communication, PC) 5 interface, the PC5 interface uses the communication protocol between the UE and UE, and the direct communication link of the PC5 interface is defined. For si...

AI Technical Summary

Problems solved by technology

Due to the small bandwidth, it is impossible to achieve a very low code rate, which will lead to limited decoding performance of PSBCH payload, and the DMRS is relatively sparse, which affects the accuracy of channel estimation and cannot meet the low-latency and high-reliability requirements in NR V2X high-speed scenarios.

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