Abstract: A first user terminal receives data during a time slot assigned for simultaneous transmission of data to a first set of at least one user terminal and to a second set of at least one user terminal using time-division multiplexing, estimates the applied power ratio between a first sub-channel to the first set and a second sub-channel to the second set (available power ratios are divided into at least one known region and each applied power ratio belongs to one region), estimates a bit error probability for each of the bursts of the received data; and applies an adaptation process in order to make the estimated bit error probabilities fall into one of bit error probability intervals of a predefined mapping table with a predetermined probability. which determines the bit error probability that is to be reported to a network.

Abstract: There is provided a method, including receiving data in a first user terminal during a time slot assigned for simultaneous transmission of data to a first set of at least one user terminal and to a second set of at least one user terminal in the time-division multiplexing communication protocol, estimating the applied power ratio between the transmission power of a first sub-channel to the first set and the transmission power of a second sub-channel to the second set, wherein the available power ratios are divided into at least one known region and each applied power ratio belongs to one region, estimating a bit error probability for each of the bursts of the received data; and applying an adaptation process in order to make the estimated bit error probabilities to fall into one of bit error probability intervals of a predefined mapping table with a predetermined probability, wherein the bit error probability interval in which the estimated bit error probabilities fall determines the bit error probability tha