A communication system, comprising: a wearable device; and a user equipment configured to: directly establish a first BLUETOOTH communication connection with the wearable device; and directly establish a second communication connection with a first device; wherein the wearable device is configured to directly establish a third BLUETOOTH communication connection with the first device in a case that the first BLUETOOTH communication connection is disconnected; wherein the user equipment is further configured to send first information to the wearable device via the second communication connection in a case that the first BLUETOOTH communication connection is disconnected; wherein the wearable device is further configured to: receive the first information via the third BLUETOOTH communication connection; wherein the user equipment is further configured to: detect a BLUETOOTH signal of the wearable device after the first BLUETOOTH communication connection is disconnected; directly establish a BLUETOOTH connection with the wearable device; send second information to the wearable device via the BLUETOOTH connection; wherein the wearable device is further configured to: disconnect the third BLUETOOTH communication connection in a case that the BLUETOOTH connection is established; and receive the second information via the BLUETOOTH connection; and wherein the user equipment is further configured to send configuration information of the first device to the wearable device via the first BLUETOOTH communication connection, said configuration information comprising a BLUETOOTH address of the first device, and wherein the wearable device is further configured to receive the configuration information via the first BLUETOOTH communication connection; and establish the third BLUETOOTH communication connection with the first device by establishing the third BLUETOOTH communication connection with the first device according to the configuration information. a wearable device; and a user equipment configured to: directly establish a first BLUETOOTH communication connection with the wearable device; and directly establish a second communication connection with a first device; directly establish a first BLUETOOTH communication connection with the wearable device; and directly establish a second communication connection with a first device; wherein the wearable device is configured to directly establish a third BLUETOOTH communication connection with the first device in a case that the first BLUETOOTH communication connection is disconnected; wherein the user equipment is further configured to send first information to the wearable device via the second communication connection in a case that the first BLUETOOTH communication connection is disconnected; wherein the wearable device is further configured to: receive the first information via the third BLUETOOTH communication connection; wherein the user equipment is further configured to: detect a BLUETOOTH signal of the wearable device after the first BLUETOOTH communication connection is disconnected; directly establish a BLUETOOTH connection with the wearable device; send second information to the wearable device via the BLUETOOTH connection; receive the first information via the third BLUETOOTH communication connection; wherein the user equipment is further configured to: detect a BLUETOOTH signal of the wearable device after the first BLUETOOTH communication connection is disconnected; directly establish a BLUETOOTH connection with the wearable device; send second information to the wearable device via the BLUETOOTH connection; detect a BLUETOOTH signal of the wearable device after the first BLUETOOTH communication connection is disconnected; directly establish a BLUETOOTH connection with the wearable device; send second information to the wearable device via the BLUETOOTH connection; wherein the wearable device is further configured to: disconnect the third BLUETOOTH communication connection in a case that the BLUETOOTH connection is established; and receive the second information via the BLUETOOTH connection; and disconnect the third BLUETOOTH communication connection in a case that the BLUETOOTH connection is established; and receive the second information via the BLUETOOTH connection; and wherein the user equipment is further configured to send configuration information of the first device to the wearable device via the first BLUETOOTH communication connection, said configuration information comprising a BLUETOOTH address of the first device, and wherein the wearable device is further configured to receive the configuration information via the first BLUETOOTH communication connection; and establish the third BLUETOOTH communication connection with the first device by establishing the third BLUETOOTH communication connection with the first device according to the configuration information.