A communication method, comprising: obtaining, by user equipment (13, 400), first indication information, so that the user equipment (13, 400) determines, according to the first indication information, whether a serving cell can be added; when the user equipment (13, 400) is in a radio resource control RRC connected mode, determining, by the user equipment (13, 400) based on the first indication information, to add a second cell as a serving cell, wherein a serving base station of the user equipment (13, 400) is a first base station (11, 600), and a serving cell of the user equipment (13, 400) is a first cell of the first base station (11, 600); sending, by the user equipment (13, 400), a first message to a second base station (12, 500) to which the second cell belongs, wherein the first message is used to request to add the second cell as a serving cell of the user equipment (13, 400); receiving, by the user equipment (13, 400), a second message, wherein the second message is used to indicate that the serving cell of the user equipment (13, 400) is successfully added; and communicating, by the user equipment (13, 400), with the first base station (11, 600) and the second base station (12, 500) by using the first cell and the second cell wherein the second message is sent from the second base station to the user equipment which differs from the first base station characterized in that the communication method further includes: receiving, by the user equipment, third indication information sent by the second base station, where the third indication information is used to indicate whether the second cell belongs to a licensed-assisted access, LAA, cell; and the determining, by the user equipment based on the first indication information, to add a second cell as a serving cell includes: when determining that the second cell belongs to the LAA cell, determining, by the user equipment based on the first indication information, to add the second cell as a serving cell. obtaining, by user equipment (13, 400), first indication information, so that the user equipment (13, 400) determines, according to the first indication information, whether a serving cell can be added; when the user equipment (13, 400) is in a radio resource control RRC connected mode, determining, by the user equipment (13, 400) based on the first indication information, to add a second cell as a serving cell, wherein a serving base station of the user equipment (13, 400) is a first base station (11, 600), and a serving cell of the user equipment (13, 400) is a first cell of the first base station (11, 600); sending, by the user equipment (13, 400), a first message to a second base station (12, 500) to which the second cell belongs, wherein the first message is used to request to add the second cell as a serving cell of the user equipment (13, 400); receiving, by the user equipment (13, 400), a second message, wherein the second message is used to indicate that the serving cell of the user equipment (13, 400) is successfully added; and communicating, by the user equipment (13, 400), with the first base station (11, 600) and the second base station (12, 500) by using the first cell and the second cell wherein the second message is sent from the second base station to the user equipment which differs from the first base station characterized in that the communication method further includes: receiving, by the user equipment, third indication information sent by the second base station, where the third indication information is used to indicate whether the second cell belongs to a licensed-assisted access, LAA, cell; and the determining, by the user equipment based on the first indication information, to add a second cell as a serving cell includes: when determining that the second cell belongs to the LAA cell, determining, by the user equipment based on the first indication information, to add the second cell as a serving cell.