Patent ID: 7929568

Claim:
A MODCOD scheduler system configured to form and transmit a queue of DVB-S2 frames 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; arrange frame transmission order as descending order of MODCODs; allow a last frame of a 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 said lower MODCOD; and pack user packets into frames corresponding to the assigned MODCOD of each user packet, wherein a queue of frames is queued for transmission such that the MODCOD attributes of consecutive frames are equal or in decreasing order starting with a frame corresponding to the highest MODCOD; wherein said MODCOD scheduler system 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.