Dynamic hopping plan optimization in a beam hopping satellite network

A satellite communication system comprising wherein beam hoppers of a plurality of beam hoppers during a hopping period each illuminate a plurality of contours according to a hopping plan indicating an order in which said plurality of contours is illuminated, the satellite communication system comprising:

• a controller device that includes
• a dynamic hopping plan calculation module for calculating said hopping plan and arranged for conveying said calculated hopping plan to a transmitter and a beam hopping satellite of said satellite communication system,
• wherein said dynamic hopping plan calculation module is arranged to calculate said hopping plan by subdividing, per beam hopper, said hopping period in at least two scheduling frames, said at least two scheduling frames forming said calculated hopping plan,
• wherein each scheduling frame comprises at least n hopping slots each indicating a contour to be illuminated, with n an integer equal to the number of contours illuminated by said beam hopper and a hopping slot denoting the minimum illumination time duration,
• wherein each contour of said number of contours is illuminated at least once per scheduling frame, and
• wherein said dynamic hopping plan calculation module is arranged to account for that a pair of beam hoppers having at most one adjacent contour with respect to one another to be illuminated, cannot illuminate said adjacent contour at the same time and with the same frequency and polarization
• the satellite communication system further comprising
• a transmitter device arranged for generating a signal to be transmitted taking into account said calculated hopping plan,
• a satellite comprising a beam hopping transponder arranged to receive said transmitted signal and an illumination circuit for steering illumination from one contour to another particular contour according to said dynamic hopping plan, and
• one or more receiver devices positioned in at least one contour to be illuminated and arranged to receive a version of said transmit signal,
• wherein said controller device is arranged for updating said hopping plan by measuring traffic contention per contour from said one or more receiver devices and from said transmitter device, translating said measured traffic contention per contour into a traffic demand frame and calculating said updated dynamic hopping plan based on at least said traffic demand frame or to reject said traffic demand frame.

A method for determining a dynamic hopping plan for a satellite communication system wherein beam hoppers of a plurality of beam hoppers during a hopping period each illuminate a plurality of contours, the method comprising:

• subdividing, per beam hopper, said hopping period in at least two scheduling frames, said at least two scheduling frames forming said calculated hopping plan, wherein each scheduling frame comprises at least n hopping slots each indicating a contour to be illuminated, within an integer equal to the number of contours illuminated by said beam hopper and a hopping slot denoting the minimum illumination time duration,
• wherein each contour of said number of contours is illuminated at least once per scheduling frame;
• conveying said calculated hopping plan to a transmitter and a beam hopping satellite of said satellite communication system,
• wherein said dynamic hopping plan calculation module is arranged to account for that a pair of beam hoppers having at most one adjacent contour with respect to one another to be illuminated, cannot illuminate said adjacent contour at the same time and with the same frequency and polarization.