Communication system, base station, and communication terminal

Abstract

Provided is a technology that can maintain the reliability and the transmission rate in the communication. A communication system includes a communication terminal, and a first base station and a second base station that are configured to perform radio communication with the communication terminal. The first base station notifies the second base station of information on a numerology to be used for communication between the first base station and the communication terminal when the first base station and the second base station provide the communication terminal with dual connectivity using a same frequency band (Steps ST1501 and ST1502).

1 . A communication system, comprising:
 a communication terminal; and   a first base station and a second base station that are configured to perform radio communication with the communication terminal,   wherein the first base station notifies the second base station of information on a numerology to be used for communication between the first base station and the communication terminal when the first base station and the second base station provide the communication terminal with dual connectivity using a same frequency band.   
     
     
         2 . The communication system according to  claim 1 ,
 wherein the first base station operates as a master base station in the dual connectivity, and   the second base station operates as a secondary base station in the dual connectivity.   
     
     
         3 . The communication system according to  claim 1 ,
 wherein the first base station operates as a secondary base station in the dual connectivity, and   the second base station operates as a master base station in the dual connectivity.   
     
     
         4 . A base station configured to perform radio communication with a communication terminal,
 wherein the base station notifies another base station of information on a numerology to be used for communication between the base station and the communication terminal, when the base station provides the communication terminal with dual connectivity together with the other base station and the base station and the other base station use a same frequency band in the dual connectivity.   
     
     
         5 . A base station configured to perform radio communication with a communication terminal,
 wherein the base station receives, from another base station, information on a numerology to be used for communication between the other base station and the communication terminal, when the base station provides the communication terminal with dual connectivity together with the other base station and the base station and the other base station use a same frequency band in the dual connectivity.   
     
     
         6 . A communication system, comprising:
 a base station; and   a communication terminal configured to perform radio communication with the base station,   wherein the communication terminal notifies the base station of information on a time necessary for switching between bandwidth parts (BWPs).   
     
     
         7 . A communication terminal configured to perform radio communication with a base station,
 wherein the communication terminal notifies the base station of information on a time necessary for the communication terminal to switch between bandwidth parts (BWPs).   
     
     
         8 . A base station configured to perform radio communication with a communication terminal,
 wherein the base station receives, from the communication terminal, information on a time necessary for the communication terminal to switch between bandwidth parts (BWPs).