Link layer error control method in wideband wireless communication, and computer readable medium therefor

PURPOSE: A method for controlling error of the link level in wide band radio communication and a medium of recording therefor are provided to supply an error controlling method of the adaptive right direction and a method of multiple copy to satisfy the quality of service as the time delayed in cell sending and the cell loss ratio. CONSTITUTION: A method for controlling error of the link level in wide band radio communication and a medium of recording therefor include a few stages. In the stage of 70 the cell of the reverse direction channel is received. In the stage of 71a the error ratio of the right direction channel is estimated. In the stage of 71b the mapping ratio is decided. In the stage of 72 PDU of the radio link level by the variable encoding ratio is composed. In the stage of 73a it is judged if the mapping ration is changed or not and if it is yes, the width of the band is adjusted in the stage of 73b. In the stage of 74 the cell of the right direction is sent. In the stage of 75 the information about feedback is received. In the stage of 76 the transition to the multiplex copy mode is carried out if NAK is received. In the stage of 77 the number of copies to be sent again is decided. In the stage of 78 the width of the additional band is adjusted. In the stage of 79 copies of the cells, which received NAK, are sent in the same frame with a contemporary multiplex copy method.