FIELD: radio engineering, communication.
SUBSTANCE: first communication device receives a subframe over a radio link and determines whether the subframe is a downlink subframe with downlink assignment for the first communication device by reading data in the subframe. The first communication device decodes the data within the subframe and determines whether any data packet sent from a second communication device has been omitted before the subframe by analysing an indicator associated with the subframe in the data. The indicator provides information on previous downlink subframes with downlink assignment for the first communication device.
EFFECT: high noise-immunity.
17 cl, 13 dwg
