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

Protocol means of a telecommunication network for data transmission, which layer structure protocol means comprise at least an upper layer and a lower layer,

• wherein the purpose of the lower layer (12) is to compose a data unit (6) to be transmitted to an upper layer (14) from one or more segments (9a, 9b) contained in the received data units (1a, 1b) and to detect one or more errors (Sa) occurring in the received segments (1a, 1b), and
• wherein to make data transmission more effective, the purpose of said lower layer (12) is also to compose the data unit (6) to be transmitted to the upper layer from one or more segments (9a, 9b) containing one or more errors (Sa), and also to transmit information concerning the location of said one or more errors (Sa) to the upper layer (14).

A wireless terminal arranged to function in a telecommunication network and comprising layer structured protocol means for data transmission, which protocol means comprise at least an upper layer and a lower layer,

• wherein the purpose of the lower layer (12) is to compose a data unit (6) to be transmitted to an upper layer (14) from one or more segments (9a, 9b) contained in the received data units (1a, 1b) and to detect one or more errors (5a) occurring in the received segments (1a, 1b), and
• wherein to make data transmission more effective, the purpose of said lower layer (12) is also to compose the data unit (6) to be transmitted to the upper layer from one or more segments (9a, 9b) containing one or more errors (5a), and also to transmit information concerning the location of said one or more errors (5a) to the upper layer (14).