Synchronization signal sending method, electronic equipment and storage medium

Abstract

The embodiment of the invention relates to the technical field of communication, and discloses a synchronization signal sending method, electronic equipment and a storage medium. In the invention, the method comprises the following steps of: grouping wireless frames to be sent to obtain a plurality of wireless frame groups; and sending each wireless frame group through a first antenna port and a second antenna port, and sending a synchronization signal in at least one wireless frame in each wireless frame group only through the first antenna port or the second antenna port. Wireless frames are sent in groups at the first antenna port and the second antenna port, and a synchronization signal in at least one wireless frame is sent only through the first antenna port or the second antenna port, so that the autocorrelation of the synchronization signal received by a terminal is prevented from being reduced under the condition that the terminal does not perceive, and the user experience is improved. And the possibility of signal demodulation failure of the terminal is reduced.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communication, and in particular, to a method for sending a synchronization signal, an electronic device, and a storage medium. Background technique [0002] At present, in the application scenario of NB-IoT technology, when NB-IoT devices access the network, they first need to search for the primary and secondary synchronization information of the cell, and only after the time-frequency domain synchronization between the terminal and the base station is completed can the system messages of the cell be demodulated. Cell access, so demodulating primary and secondary synchronization is a key step for a terminal to access a cell. In the third-generation cooperation project 3GPP, the downlink channel of NB-IOT narrowband Internet of Things is required to support two antenna ports, but due to cost reasons and power consumption requirements, most terminals receive with a single antenna...

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Problems solved by technology

[0003] The inventors of the present application found that because the design of the primary synchronization signal NPSS and secondary synchronization signal NSSS on the base station side is different from that of other physical layer signals, the terminal does not know the NPSS and secondary synchronization signal NSSS on the base station side when demodulating the narrowband primary synchronization signal NPSS and the narrowband secondary synchronization signal NSSS. Antenna port information, so the narrowband primary synchronization signal NPSS and the narrowband secondary synchronization signal NSSS sent by the two antennas on the base station side are identical signals in the time-frequency domain. The synchronization signals sent by the two antennas of the base station pass through the space wireless channel and are superimposed on the terminal antenna. At the terminal antenna, when the phases of the two signals are opposite, the signal strength of the superimposed signal drops sharply, and the signal-to-noise ratio of NPSS / NSSS will become lower. Since the sequence length of NPSS and NSSS is relatively short, in low signal-to-noise ratio scenarios Under this condition, the autocorrelation of NPSS and NSSS sequences will be severely reduced, which will have a serious impact on the success rate of terminal demodulation of NPSS and NSSS sequences

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