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US 8,897,307 B2Granted
Packing data over an adaptive rate link
AssigneeGilat Satellite Networks Ltd.
InventorsUzi Ram, Dor Snapir, Dubi Lever
Life of this patent
Estimating the term…
Abstract
A system and method for packing data over User Packets and packing the User Packets over DVB-S2 Frames, using the DVB-S2-ACM satellite transmission standard.
Claims15
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.
3 more elements
A method of reducing MODCOD transitions, comprising:
- scheduling a queue of frames for transmission;
- collecting a plurality of user packets of data for transmission;
- building frames from said plurality of user packets based on MODCOD attributes of the user packets;
- and
- setting a frame queue for transmission in an equal or descending order of MODCOD,
- wherein if a frame cannot be fully filled with user packets of a higher MODCOD attribute, a frame with lower MODCOD is selected to contain these user packets and additional user packets with attributes equal to said lower MODCOD.
3 more elements
Dependencies are inferred from the claim text.