公开(公告)号：US09344922B2

公开(公告)日：2016-05-17

申请号：US14406757

申请日：2013-05-14

Applicant: NTT DOCOMO, INC.

Inventor： Jinho Kim ,  Hiroto Yasuda ,  Yasufumi Morioka ,  Hideaki Takahashi ,  Junichiro Hagiwara ,  Hiroyuki Ishii

IPC: H04W4/00 ,  H04W36/00 ,  H04W76/02

CPC classification number: H04W36/0027 ,  H04W36/0088 ,  H04W76/12

Abstract: A radio communication system has a user equipment, a first base station, a second base station, and a gateway device. The first base station is capable of executing radio resource control of the user equipment, whereas the second base station does not execute radio resource control of the user equipment. The first base station, based on a measurement report message, determines whether a user-plane path is to be established between the first base station and the second base station. In a case in which it is determined that a user-plane path is to be established, the first base station establishes a user-plane path between the first base station and the second base station. Also, the first base station controls the user equipment to establish a user-plane path between the user equipment and the second base station.

Abstract translation: 无线电通信系统具有用户设备，第一基站，第二基站和网关设备。 第一基站能够执行用户设备的无线电资源控制，而第二基站不执行用户设备的无线电资源控制。 第一基站，基于测量报告消息，确定在第一基站和第二基站之间是否建立用户平面路径。 在确定要建立用户平面路径的情况下，第一基站在第一基站和第二基站之间建立用户平面路径。 此外，第一基站控制用户设备在用户设备和第二基站之间建立用户平面路径。

公开(公告)号：US20150312810A1

公开(公告)日：2015-10-29

申请号：US14441546

申请日：2013-10-04

Applicant: NTT DOCOMO, INC.

Inventor： Hiroto Yasuda ,  Yasufumi Morioka ,  Jinho Kim ,  Hideaki Takahashi ,  Yukihiko Okumura ,  Hiroyuki Ishii

IPC: H04W36/00 ,  H04W36/38 ,  H04W88/16 ,  H04W36/08

CPC classification number: H04W36/0055 ,  H04W36/08 ,  H04W36/38 ,  H04W88/16 ,  H04W92/20

Abstract: A radio communication system includes a user device, a first base station, a second base station, a third base station, a gateway device, and a switching center. A user-plane path is established between the user device and the gateway device via the third base station. When the user device is handed over from the first base station to the second base station, the first base station adds an identifier of the third base station to a handover request message and transmits the handover request message to the second base station. The second base station transmits, to the third base station, a base station switch notification message that indicates that a radio connection destination for the user device has been switched to the second base station.

Abstract translation: 无线电通信系统包括用户设备，第一基站，第二基站，第三基站，网关设备和交换中心。 经由第三基站在用户设备和网关设备之间建立用户平面路径。 当用户设备从第一基站切换到第二基站时，第一基站将第三基站的标识符添加到切换请求消息，并将切换请求消息发送到第二基站。 第二基站向第三基站发送指示用户设备的无线电连接目的地已切换到第二基站的基站交换机通知消息。