Patent ID: 6937582

Claim:
A method of controlling a radio link (RL) in a mobile radio network (PLMN) for maintaining a high data transmission rate, wherein the mobile radio network (PLMN) includes at least one cell (C 1 ) that has a number of radio channels accessible for radio connection to a corresponding number of mobile stations (MS) within the cell, said method comprising the steps of: channel coding (S 1 ) a stream of user data to which redundant information is added, in accordance with a first channel coding scheme; transmitting (S 2 ) said stream on a first frequency hopping radio channel (FH — RCH); measuring (S 3 ) a transmission quality on the first frequency hopping radio channel (FH — RCH); and, if a measurement of the transmission quality exceeds a predetermined threshold: switching (S 6 ) from the first channel coding scheme to a second channel coding scheme that does not add redundant information to said stream of user data, wherein said first channel coding scheme corresponds to CS 1 , CS 2 or CS 3 according to GPRS, and wherein said second channel coding scheme corresponds to CS 4 according to GPRS; and switching (S 5 ) radio channels for sending said stream from the first frequency hopping radio channel (FH — RCH) to a second non frequency hopping radio channel (NH — RCH) in conjunction with the step of switching from the first channel coding scheme to the second channel coding scheme.