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Synchronization signal sending method, receiving method and apparatuses

A synchronization signal and channel technology, which is applied in the field of communication, can solve the problems that the user equipment cannot send the synchronization signal, and the user equipment cannot synchronize with the cell, so as to achieve the effect of uplink synchronization

Active Publication Date: 2019-02-01
HUAWEI TECH CO LTD
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Problems solved by technology

Before the station uses the unlicensed spectrum to send the synchronization signal, it also needs to perform the listen-before-talk process. However, due to the uncertainty of the time when the unlicensed spectrum is idle, the station cannot send the synchronization signal to the user equipment in time. , so that the user equipment cannot synchronize with the cell

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  • Synchronization signal sending method, receiving method and apparatuses
  • Synchronization signal sending method, receiving method and apparatuses
  • Synchronization signal sending method, receiving method and apparatuses

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Embodiment Construction

[0056] Embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.

[0057] Figure 1a It is a schematic diagram of a communication system architecture according to an embodiment of the present invention, and the communication system includes network devices and terminal devices. Figure 1a It shows that 1a network devices cooperate to communicate with 2 terminal devices. The communication system may be global system for mobile communication (GSM), code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, global microwave interconnection Worldwide interoperability formicrowave access (WiMAX) system, long term evolution (long term evolution, LTE) system, 5G communication system (such as new air interface (new radio, NR)) system, communication system integrating multiple communication technologies (such as LTE A communication system that integrates NR technology...

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Abstract

The invention discloses a synchronization signal sending method and apparatus. A network device sends at least one of a synchronization signal and synchronization signal time information to a terminaldevice at a first time domain position when monitoring that a channel is idle, and the terminal device can know an actual time domain position of the synchronization signal according to the synchronization signal time information; and in this way, the terminal device can accurately receive the synchronization signal at a specified time domain position, thereby implementing uplink synchronization.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for sending a synchronization signal, a method for receiving it and a device for receiving it. Background technique [0002] Spectrum resources are scarce resources for wireless communication. In order to improve the utilization of spectrum resources, it is currently considered to apply unlicensed spectrum resources to wireless communication systems, for example: in long term evolution (long term evolution, LTE) or new air interface (new radio, NR) uses unlicensed spectrum resources. Unlicensed spectrum resources need to be used through competition. Before sending data, the station will monitor whether the unlicensed spectrum is free. Only when the unlicensed spectrum is free can it send data on the unlicensed spectrum, otherwise it cannot send data. The mechanism of sending after listening is called a listen before talk (LBT) mechanism. [0003] Before a user equipme...

Claims

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Application Information

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IPC IPC(8): H04W56/00
CPCH04W56/00H04W48/12H04W24/02
Inventor 贾琼朱俊张佳胤庞继勇范巍巍
Owner HUAWEI TECH CO LTD
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