Abstract: By more flexibly controlling connection for each transmission rate in the wireless base station, the connection is established using possibly a higher transmission rate so long as the connection capacity of the wireless base station has a margin while efficiently determining the transmission rate according to the wave intensity from a wireless communication terminal. If the connection capacity of the base station has a margin after additionally connecting one wireless communication terminal, i.e., if the communication traffic is equal to or less than a predetermined margin threshold value, the rate decision threshold value to determine the transmission rate for connection is lowered by a predetermined value to determine a transmission rate so that the connection is established using a transmission rate higher than that determined by the rate decision threshold value as the default value (initial value) to thereafter establish the connection.

Abstract: The unusable part of the simultaneous connection capacity is reduced by more flexibly using the simultaneous connection capacity of the wireless base station to increase the number of wireless transmission terminals to be simultaneously connected to the base station while maintaining the predetermined communication quality when the transmission rate is dynamically changing moment by moment. Based on the codec type of the transmission terminal associated with the base station for each transmission rate and the number of terminals using codecs of the type, the base station calculates the band to be used at a point of time for each transmission rate. The available traffic for a transmission rate can be estimated by subtracting the band from an associated effective rate.

Abstract: By more flexibly controlling connection for each transmission rate in the wireless base station, the connection is established using possibly a higher transmission rate so long as the connection capacity of the wireless base station has a margin while efficiently determining the transmission rate according to the wave intensity from a wireless communication terminal. If the connection capacity of the base station has a margin after additionally connecting one wireless communication terminal, i.e., if the communication traffic is equal to or less than a predetermined margin threshold value, the rate decision threshold value to determine the transmission rate for connection is lowered by a predetermined value to determine a transmission rate so that the connection is established using a transmission rate higher than that determined by the rate decision threshold value as the default value (initial value) to thereafter establish the connection.