Efficient inroute (return channel) load balancing scheme of guaranteed QoS traffic mixed with best effort traffic in an oversubscribed satellite network
AssigneeHughes Network Systems, LLC
InventorsSatyajit Roy, Archana Gharpuray
Life of this patent
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Abstract
A method for balancing inroute traffic load that contains both guaranteed QoS and best effort traffic. Hierarchical grouping levels are defined with the lowest level corresponding to inroutes within the system. Certain levels have common symbol rates, modulation rates, or both. When a new terminal requires admission, it is assigned to entries in the different hierarchical levels so that the inroute traffic load across all levels are balanced. Terminals are admitted to inroutes based, in part, on their channel quality indicator. Inroute traffic load can periodically rebalance based on elapsed time or terminal redistribution.
Claims17
A method comprising:
- selecting an inroute set carrying traffic load in a satellite communication system based on a predetermined time interval;
- performing a super inroute group load balance between at least one super inroute group contained in the selected inroute set, each of the at least one super inroute group having a different symbol rate;
- performing an inroute group load balance between one or more inroute groups contained in each of the at least one super inroute group, each of the one or more inroute groups having a different modulation rate;
- and
- performing an inroute load balance between one or more inroutes contained in each of the one or more inroute groups,
- wherein the traffic load includes at least guaranteed service terminal traffic and/or backlog terminal traffic,
- wherein traffic load for the satellite communication system is balanced across the at least one super inroute group, the one or more inroute groups, and the one or more inroutes,
- wherein performing the super inroute group load balance comprises balancing a committed traffic load across the at least one super inroute group contained in the selected inroute set and balancing a backlog traffic load across the at least one super inroute group contained in the selected inroute set, and
- wherein balancing the committed traffic load comprises determining a mean committed service load density of the selected inroute set, determining a committed service load density of each super inroute group within the selected inroute set, and moving one or more guaranteed service terminals across the at least one super inroute group until the committed service load density of each super inroute group is within a predetermined tolerance of the mean committed service load density of the selected inroute set.
Dependencies are inferred from the claim text.