Base station, upper node, radio communication system and radio communication method

摘要

A base station includes a scheduling unit and a call reception control unit. The call reception control unit includes a managing unit that updates total resource usage amount based on total resource allocation amount and manages the total resource usage amount, and a decision unit that adds an initial radio resource to be allocated to a new call to the total resource usage amount and decides whether the new call can be accepted. The managing unit updates the total resource usage amount by subtracting a radio resource in response to the release of an existing call that radio resource allocation being not controlled at each transmission time interval. The managing unit manages the total resource usage amount without subtracting a radio resource in response to the release of an existing call that radio resource allocation being controlled at each transmission time interval.