Patent ID: 7835287
Filing Date: 2010-11-16
Classification: H04L,H04W

Abstract:
1. A mobile station comprising: a packet data retaining unit which tentatively retains packet data received from a base station; a reject ratio computation unit which computes a ratio of rejected packet data resulting from a processing capacity overflow in the packet data retained by the packet data retaining unit; a management table in which a packet data rate retainable by the packet data retaining unit and an upper limit of a transmission rate corresponding to the packet data rate are managed while being correlated with one another; a BER measuring unit which measures BER (Block Error Rate); an upper limit determination unit which determines an upper limit of a transmission rate based on the BER measured by the BER measuring unit; a packet data rate obtaining unit which references the management table to obtain a packet data rate correlated with the upper limit of the transmission rate based on the upper limit of the transmission rate determined by the upper limit determination unit; a transmission rate setting unit which computes a packet data rate retainable by the packet data rate retaining unit by multiplying the packet data rate obtained by the packet data rate obtaining unit by the ratio computed by the reject ratio computation unit, and which references the management table to obtain the upper limit of the transmission rate correlated with the packet data rate based on the computing packet data rate, and which places a restriction on the upper limit of the transmission rate; and a transmission rate notification unit which notifies the base station of the upper limit of the transmission rate set by the transmission rate setting unit.