Patent ID: 8559399

Claim:
A semiconductor device, comprising: a wireless station selection unit configured to select a connection destination wireless station from among a plurality of wireless stations, wherein the wireless station selection unit comprises: a power calculation processing unit configured to calculate power values for respective receiving signals from the plurality of wireless stations, a storage unit configured to store a table, wherein a subset of the power values that are equal to or greater than a defined threshold are recorded in the table in association with a subset of the wireless stations respectively corresponding to the subset of the power values, a table update processing unit configured to update the table at a defined timing interval, and a power variation range detection processing unit configured to determine respective variation ranges of the subset of the power values for the subset of the wireless stations with reference to the table and to set a wireless station, of the subset of the wireless stations, having a variation range, of the variation ranges, that is within a defined range as a priority candidate of the connection destination wireless station.