Wireless communication system, method, base station, user equipment and device

2:

• The electronic device according to claim 1, wherein the release condition comprises at least one of the following:
• a primary carrier signal quality between the user equipment and the first base station is lower than a predetermined signal quality threshold;
• the second base station is to share load for the first base station;
• and wireless link failure occurs between the user equipment and the first base station.

3:

• The electronic device according to claim 1, wherein the release condition comprises at least one of the following:
• time length for which the user equipment performs data transmission with the second base station is longer than a predetermined time length threshold power consumption that the user equipment performs uplink transmission with a single node is less than power consumption that the user equipment performs uplink transmission with dual nodes by a predetermined power consumption threshold;
• when the user equipment needs to transfer the wireless data connection with the first base station to a new wireless base station, it needs to combine a procedure to establish wireless data connection with the new wireless base station and the second base station with a procedure to release the wireless data connection with the first base station;
• and the user equipment needs to establish wireless data connection with the first base station at the same time in a scene that the user equipment only has wireless data connection with the second base station, but an initial access procedure with respect to the first base station by the user equipment fails.

9:

• An electronic device for a base station in a wireless communication system, wherein a user equipment simultaneously performs wireless data connections with the base station and other base station over different carriers, and the base station releases the wireless data connection with the user equipment if a release triggering node judges a release condition is satisfied, the electronic device comprising:
• circuitry configured to receive notification information from the other base station to release the wireless data connection between the base station and the user equipment;
• and release the wireless data connection between the user equipment and the base station and transfer the data bearers to the other base station for transmission,
• wherein the data bearers are directly from core network and/or forwarded from the other base station.

10:

• The electronic device according to claim 9, wherein the circuitry is further configured to:
• judge, if the base station acts as the release triggering node, whether the release condition is satisfied;
• and
• notify, if the circuitry judges that the release condition is satisfied, the other base station so as to request release of the wireless data connection between the base station and the user equipment.

11:

• The electronic device according to claim 9, wherein the release condition comprises at least one of the following:
• a primary carrier signal quality between the user equipment and the base station is lower than a predetermined signal quality threshold;
• time length for which the user equipment performs data transmission with the other base station is longer than a predetermined time length threshold;
• the other base station is to share load for the base station;
• power consumption that the user equipment performs uplink transmission with a single node is less than power consumption that the user equipment performs uplink transmission with dual nodes by a predetermined power consumption threshold;
• when the user equipment needs to transfer the wireless data connection with the base station to a new wireless base station, it needs to combine a procedure to establish wireless data connection with the new wireless base station and the other base station with a procedure to release the wireless data connection with the base station;
• wireless link failure occurs between the user equipment and the base station;
• and the user equipment needs to establish wireless data connection with the base station at the same time in a scene that the user equipment only has wireless data connection with the other base station, but an initial access procedure with respect to the base station by the user equipment fails.

12:

• An electronic device for a base station in a wireless communication system, wherein the user equipment simultaneously performs wireless data connections with the base station and other base station over different carriers, and the other base station releases the wireless data connection with the user equipment if a release triggering node judges a release condition is satisfied, the base station comprising circuitry configured to:
• generate notification information for the other base station to release the wireless data connection between the other base station and the user equipment;
• and
• notify to the user equipment release of the wireless data connection between the user equipment and the other base station,
• wherein data bearers transmitted by the other base station are directly from core network and/or forwarded from the base station.

13:

• The electronic device according to claim 12, wherein the release condition comprises at least one of the following:
• a primary carrier signal quality between the user equipment and the other base station is lower than a predetermined signal quality threshold;
• time length for which the user equipment performs data transmission with the base station is longer than a predetermined time length threshold;
• the base station is to share load for the other base station;
• power consumption that the user equipment performs uplink transmission with a single node is less than power consumption that the user equipment performs uplink transmission with dual nodes by a predetermined power consumption threshold;
• when the user equipment needs to transfer the wireless data connection with the other base station to a new wireless base station, it needs to combine a procedure to establish wireless data connection with the new wireless base station and the base station with a procedure to release the wireless data connection with the other base station;
• wireless link failure occurs between the user equipment and the other base station;
• and the user equipment needs to establish wireless data connection with the other base station at the same time in a scene that the user equipment only has wireless data connection with the base station, but an initial access procedure with respect to the other base station by the user equipment fails.

16:

• The electronic device according to claim 12, wherein the circuitry is further configured to:
• receive, if the other base station acts as the release triggering node and it is judged that the release condition is satisfied, a request for releasing the wireless data connection between the user equipment and the other base station from the other base station;
• and
• notify the other base station to transfer the data bearers to the base station for transmission.

17:

• The electronic device according to claim 12, wherein the circuitry is further configured to:
• receive, if the base station acts as the release triggering node, a mobility measurement result of a carrier of the other base station from the user equipment;
• judge whether the release condition is satisfied based on the mobility measurement result;
• and
• notify, according to a judging result, the other base station to release the wireless data connection with the user equipment and transfer data bearers to the base station for transmission.