Uplink carrier aggregation maintenance method, system, apparatus, and readable storage medium

The invention discloses an uplink carrier aggregation maintenance method, system, apparatus, and a computer readable storage medium. The method comprises that a base station obtains a time offset value of a primary carrier and a time offset value of a secondary carrier; the base station performs digital filtering on the time offset value of the primary carrier and the time offset value of the secondary carrier so as to obtain a filter value of the primary carrier and a filter value of the secondary carrier; the base station performs weighted calculation on the filter value of the primary carrier and the filter value of the secondary carrier so as to obtain a time offset input value; if the base station detects that the absolute value of the time offset input value is greater than a first threshold value, a data control instruction is obtained, the data control instruction is sent to a to-be-adjusted terminal, so that the to-be-adjusted terminal performs synchronization adjustment of the carrier timing advance