Patent ID: 8897307

Claim:
A MODCOD scheduler circuit configured to form and transmit a queue of frames, the scheduler comprising: one or more circuits configured to prepare user packets of data for transmission by assigning an appropriate MODCOD for each user packet based on destination terminal reception condition and data type; one or more circuits configured to arrange a frame transmission order as a descending order of MODCODs; one or more circuits configured to allow a last frame of a certain MODCOD that is partially filled with user packets to be replaced by a frame with a lower MODCOD containing said user packets together with additional user packets that were assigned to the lower MODCOD; and one or more circuits configured to pack user packets into frames corresponding to the assigned MODCOD of each user packet, and wherein said MODCOD scheduler circuit is configured to allow user packets to be split between adjacent frames in the queue of frames for transmission, but is configured not to allow said user packets to be split between a last frame of one queue and a first frame of a next queue.