Non-transparent data transmission in a digital telecommunications system

摘要

PCT No. PCT/FI96/00259 Sec. 371 Date Apr. 1, 1997 Sec. 102(e) Date Apr. 1, 1997 PCT Filed May 8, 1996 PCT Pub. No. WO96/36146 PCT Pub. Date Nov. 14, 1996A digital telecommunications system and method for non-transparent data transmission includes a non-transparent data connection between a transmitting party and a receiving party, on which channel coding is employed. The transmission buffer buffers the data frames to be transmitted and stores the transmitted data frames until it receives an acknowledgement of successful reception. This is avoided by monitoring the quality of the non-transparent connection, and if the quality of the the connection drops to a specific threshold value, by changing the channel coding scheme of the connection for a more efficient one. Simultaneously, however, more channel capacity is allocated for the connection in according with the chosen channel coding scheme so that the original nominal user data rate can be maintained unchanged or nearly unchanged.