Patent ID: 6118834
Filing Date: 2000-09-12
Classification: H04J,H04L,H04W

Abstract:
Rate adaptation equipment in a telecommunication system for data transmission employing a frame-structured end-to-end data transmission protocol between telecommunication equipment of a transmitting party and telecommunication equipment of a receiving party over a non-uniform non-transparent traffic channel or set of traffic channels consisting of a traffic channel section of a higher capacity and a traffic channel section of a lower capacity, the rate adaptation equipment being located at an interface between the higher capacity and the lower capacity traffic channel sections and comprising:a data buffer that buffers frames received from the higher capacity traffic channel section before the frames are transmitted to the lower capacity traffic channel section; anddata buffer control arranged to adjust a filling level of the data buffer by intervening on the frame-structured end-to-end transmission protocol and activating, based on the filling level of the data buffer, data flow control according to said data transmission protocol over said traffic channel section of higher capacity in the telecommunication equipment of the transmitting party, said data buffer control being arranged to pass the end-to-end protocol through the rate adaptation equipment without intervention otherwise, wherein:the data buffer control is arranged to convert acknowledgement frames of a second frame type, transmitted by the receiving party, into acknowledgement frames of a first frame type before forwarding the acknowledgement frames to the transmitting party when the data flow control is activated.