Method for retransmitting data packets using incremental redundancy comprising a retransmission number by a telecommunication device, the retransmission number allowing it to be used to determine which redundancy versions to combine, whereby a first content is transmitted in a first data package with a first retransmission number on a telecommunication channel, and a second content in a second data package with a second retransmission number is the next packet transmitted or to be transmitted on the transmission channel after the first data package, the method steps being such - that if the second content is different from the first content, the second retransmission number is set to zero, and - that if the second content is equal to the first content, the second retransmission number is equal to the first retransmission number increased by one if the first retransmission number is smaller than a maximum retransmission number, and that the second retransmission number is equal to the first retransmission number if the first retransmission number is equal to the maximum retransmission number, - that redundancy versions referring to differently encoded data packages having the same content are calculated, - that a redundancy version of the first data package is calculated from the first retransmission number if the first retransmission number is smaller than the given maximum retransmission number, - that a redundancy version of the second data package is calculated from the second retransmission number if the second retransmission number is smaller than the given maximum retransmission number, characterized in - that a redundancy version of the first data package is calculated from the transmission time or equivalently from the transmission frame number of the first data package if the first retransmission number is equal to the given maximum retransmission number, - that a redundancy version of the second data package is calculated from the transmission time or equivalently from the transmission frame number of the second data package if the second retransmission number is equal to the given maximum retransmission number. - that if the second content is different from the first content, the second retransmission number is set to zero, and - that if the second content is equal to the first content, the second retransmission number is equal to the first retransmission number increased by one if the first retransmission number is smaller than a maximum retransmission number, and that the second retransmission number is equal to the first retransmission number if the first retransmission number is equal to the maximum retransmission number, - that redundancy versions referring to differently encoded data packages having the same content are calculated, - that a redundancy version of the first data package is calculated from the first retransmission number if the first retransmission number is smaller than the given maximum retransmission number, - that a redundancy version of the second data package is calculated from the second retransmission number if the second retransmission number is smaller than the given maximum retransmission number, - that a redundancy version of the first data package is calculated from the transmission time or equivalently from the transmission frame number of the first data package if the first retransmission number is equal to the given maximum retransmission number, - that a redundancy version of the second data package is calculated from the transmission time or equivalently from the transmission frame number of the second data package if the second retransmission number is equal to the given maximum retransmission number.