A data processing method in a user equipment UE, comprising: receiving, by the user equipment UE, an uplink transmission grant sent by a base station, wherein the uplink transmission grant is used to schedule the UE to perform uplink data transmission at a specified location of an unlicensed carrier; detecting, by the UE, after the reception of the uplink transmission grant and before performing the uplink data transmission whether another system or device is using the unlicensed carrier at the specified location; if the UE detects that another system or device is using the unlicensed carrier at the specified location, transmitting uplink data or stopping the uplink data transmission at the specified location of the unlicensed carrier according to an acquired avoidance rule, and wherein the avoidance rule comprises at least one of a type of a transmission system that preferentially uses the unlicensed carrier, an identifier of a transmission device that preferentially uses the unlicensed carrier, an identifier of a transmission user that preferentially uses the unlicensed carrier, or an avoidance threshold for using the unlicensed carrier by the UE, wherein a manner of acquiring the avoidance rule is: receiving the avoidance rule sent by the base station, wherein the avoidance rule is an avoidance rule for performing uplink transmission on the unlicensed carrier by the UE; or stipulating the avoidance rule according to a communications protocol, wherein the avoidance rule is an avoidance rule for performing uplink transmission on the unlicensed carrier by the UE. receiving, by the user equipment UE, an uplink transmission grant sent by a base station, wherein the uplink transmission grant is used to schedule the UE to perform uplink data transmission at a specified location of an unlicensed carrier; detecting, by the UE, after the reception of the uplink transmission grant and before performing the uplink data transmission whether another system or device is using the unlicensed carrier at the specified location; if the UE detects that another system or device is using the unlicensed carrier at the specified location, transmitting uplink data or stopping the uplink data transmission at the specified location of the unlicensed carrier according to an acquired avoidance rule, and wherein the avoidance rule comprises at least one of a type of a transmission system that preferentially uses the unlicensed carrier, an identifier of a transmission device that preferentially uses the unlicensed carrier, an identifier of a transmission user that preferentially uses the unlicensed carrier, or an avoidance threshold for using the unlicensed carrier by the UE, wherein a manner of acquiring the avoidance rule is: receiving the avoidance rule sent by the base station, wherein the avoidance rule is an avoidance rule for performing uplink transmission on the unlicensed carrier by the UE; or stipulating the avoidance rule according to a communications protocol, wherein the avoidance rule is an avoidance rule for performing uplink transmission on the unlicensed carrier by the UE. receiving the avoidance rule sent by the base station, wherein the avoidance rule is an avoidance rule for performing uplink transmission on the unlicensed carrier by the UE; or stipulating the avoidance rule according to a communications protocol, wherein the avoidance rule is an avoidance rule for performing uplink transmission on the unlicensed carrier by the UE.