Base station, radio communication system, and communication method

A base station that performs radio communications with a user terminal comprising:

• a call connection acceptance determination unit that determines, when a call connection request signal from the user terminal is received, whether a call connection request from the user terminal is acceptable, based on an amount of resources that is used by the base station;
• a redirection-setting unit that sets, when the call connection acceptance determination unit determines that the call connection request from the user terminal is not to be accepted, a different base station to which the user terminal is to be redirected;
• and
• a notification unit that reports information representing the different base station that is set by the redirection-setting unit to the user terminal.

A radio communication system comprising:

• a user terminal;
• and
• a base station that performs radio communication with the user terminal,
• wherein the base station includes
• a call connection acceptance determination unit that determines, when a call connection request signal from the user terminal is received, whether a call connection connection request from the user terminal is acceptable, based on an amount of resources that is used by the base station;
• a redirection-setting unit that sets, when the call connection acceptance determination unit determines that the call connection request from the user terminal is not to be accepted, a different base station to which the user terminal is to be redirected;
• and
• a notification unit that reports information representing the different base station that is set by the redirection-setting unit to the user terminal,
• wherein the user terminal includes a connection processing unit that performs a call connection process with the base station, and
• wherein, when the base station reports the information representing the different base station, the connection processing unit performs redirection to the different base station.

A communication method of a base station that performs radio communication with a user terminal, the communication method comprising:

• a call connection acceptance determination step of determining, when a call connection request signal from the user terminal is received, whether a call connection request from the user terminal is acceptable, based on an amount of resources that is used by the base station;
• a redirection-setting step of setting, when the call connection acceptance determination step determines that the call connection request from the user terminal is not to be accepted, a different base station to which the user terminal is to be redirected;
• and
• a notification step of reporting information representing the different base station that is set by the redirection-setting step to the user terminal.