Patent ID: 11963039
Assignee: FUJITSU LIMITED
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A communication system comprising:
a first base station;
a second base station; and
a terminal device, wherein
the first base station includes
a first receiver that receives information related to a communication processing state of the second base station from the second base station,
a first transmitter that transmits, to the second base station, duplication of data to be transmitted to the terminal device, and
a second transmitter that transmits the data to the terminal device by using radio communication,

the first transmitter transmits, after the transmission of the data performed by the second transmitter has been completed, in accordance with the information related to the communication processing state, a transmission completion notification that indicates that the transmission of the data has been completed to the second base station,
the second base station includes
a third transmitter that transmits the information related to the communication processing state of the second base station to the first base station,
a second receiver that receives, from the first base station, the duplication of the data to be transmitted to the terminal device, and
a fourth transmitter that transmits the duplication of the data to the terminal device by using radio communication,

the second receiver receives the transmission completion notification from the first base station, and
when the second receiver receives the transmission completion notification from the first base station before the transmission of the duplication of the data to the terminal device is completed, the fourth transmitter cancels the transmission of the duplication of the data to the terminal device.