Method for making data transmission more effective and a data transmission protocol

a, baa, ba, baaThe invention relates to a method for making data transmission more effective in a telecommunication network, which comprises layer structured protocol feature for data transmission which protocol feature comprise at least an upper layer and a lower layer, wherein the purpose of the lower layer is at least to compose a data unit to be transmitted to the upper layer from one or more segments, in which method one or more errors occurring in the received segments are detected. In the invention, said data unit to be transmitted to the upper layer is composed from one or more segments containing one or more errors, wherein information on the location of one or more errors is also transmitted to the upper layer.