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

Abstract

A wireless communication system, a method, a base station, user equipment and a device. An electronic device for a user equipment in a wireless communication system, wherein the user equipment simultaneously performs wireless data connections with a first base station and a second base station over different carriers, the electronic device including: circuitry configured to, acquire a notification to release the wireless data connection between the user equipment and the first base station from the second base station, if a release triggering node judges that a release condition is satisfied; and release the wireless data connection with the first base station based on the notification, wherein the release triggering node is either the first base station or the second base station.

1 . A user equipment in a wireless communication system, wherein the user equipment simultaneously performs wireless data connections with a first base station and a second base station over different carriers, the user equipment comprising:
 circuitry configured to
 acquire a notification, to release the wireless data connection between the user equipment and the first base station, from the second base station in a case that a triggering node judges that a release condition is satisfied; 
 release the wireless data connection with the first base station based on the notification; and 
 perform only the wireless data connection with the second base station, wherein 
   the triggering node is either the first base station or the second base station,   the first base station forwards acceptable data to the second base station, and   the first base station notifies a core network to release unacceptable bearers between the first base station and the core network bearers.   
     
     
         2 . A base station in a wireless communication system, wherein a user equipment simultaneously performs wireless connections with a first base station and a second base station over different carriers, the base station comprising:
 circuitry configured to   trigger a release procedure to release the wireless connection between the user equipment and the first base station in a case that the base station judges a release condition is satisfied;   wherein the base station is the first base station or the second station;   wherein, the first base station forwards acceptable data to the second base station, the first base station notifies a core network to release unacceptable bearers between the first base station and the core network bearers.   
     
     
         3 . A base station in a wireless communication system, wherein a user equipment simultaneously performs wireless connections with a first base station and a second base station over different carriers, the base station comprising:
 circuitry configured to
 send a release request to the other base station to release the wireless data connection between the base station and the user equipment in a case that the base station is the triggering node; 
 receive a deactivation notification from the other base station to release the wireless data connection between the base station and the user equipment in a case that the other base station is the triggering node; and 
 release the wireless data connection between the user equipment, release unacceptable data bearers and transfer acceptable data bearers to the other base station for transmission so that only the wireless data connection between the user equipment and the other base station is performed, wherein 
   when the wireless data connection between the user equipment and the base station is released, the other base station stops forwarding data bearers to the base station by releasing the unacceptable data bearers and transferring the acceptable data bearers to the base station.