Patent ID: 8694006

Claim:
A first base station comprising: a first receiver that receives a signal from a mobile station, the signal indicating a first wireless quality that is a wireless quality of signals received by the mobile station which uses software-defined radio and communicates with the first base station using a first communication protocol; and a processor that executes processing to download, from the first base station to the mobile station, communication software that causes the mobile station to execute communication processing according to a second communication protocol which is used by the mobile terminal to communicate with a second base station, based on a first condition of the first wireless quality, and executes processing to transmit, to the mobile station, a handover instruction signal to cause a handover of the mobile station to the second base station that communicates with the mobile station using the second communication protocol based on a second condition of the first wireless quality, wherein the first condition is a condition set to be satisfied before the second condition when the first wireless quality decreases.