Uplink timing advance determination method and device and public timing related information broadcasting method and device

Abstract

The invention relates to an uplink timing advance determination method, which is suitable for a terminal, and comprises the following steps: receiving public timing related information broadcasted by a cell; and determining the uplink timing advance according to the public timing related information. According to the invention, the cell does not need to indicate all uplink timing advance, but only needs to indicate the public timing related information, and the public timing related information is not greater than the uplink timing advance, thereby facilitating the reduction of the indicated information amount. In addition. By broadcasting the valid time-related information of the public timing-related information, the terminal does not need to acquire the system information carrying the public timing-related information when determining that the received public timing-related information is valid according to the valid time-related information, so that the system information does not need to be acquired even if the public time offset changes. And the cell does not need to continuously inform the terminal of the changed public time offset, so that the signaling overhead is reduced, and the power consumption of the terminal is reduced.

Description

technical field [0001] The present disclosure relates to the field of communication technologies, and in particular, to a method for determining an uplink timing advance, a method for broadcasting public timing-related information, a device for determining an uplink timing advance, a device for broadcasting public timing-related information, electronic equipment, and a computer-readable storage medium. Background technique [0002] In order to enable the terminal to perform uplink synchronization, the base station can indicate a timing advance (TimingAdvance) to the terminal, and the terminal obtains uplink synchronization according to the timing advance indicated by the base station, but the size of the timing advance that the base station can indicate is limited, currently the largest cannot exceed 2 milliseconds. [0003] However, in Non-Terrestrial Networks (NTN for short), the terminal and the ground base station communicate through satellites. Since the satellite is in...

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Problems solved by technology

[0002] In order to enable the terminal to perform uplink synchronization, the base station can indicate a timing advance (TimingAdvance) to the terminal, and the terminal obtains uplink synchronization according to the timing advance indicated by the base station, but the size of the timing advance that the base station can indicate is limited, currently the largest Cannot exceed 2 milliseconds

[0003] However, in Non-Terrestrial Networks (NTN for short), the terminal and the ground base station communicate through satellites. Since the satellite is in the air, it takes a long time for the signal to be transmitted from the ground to the satellite, and then from the satellite to the ground. , so there will be a large delay, the maximum delay can reach more than 500 milliseconds, which is far greater than the timing advance that the base station can indicate

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