Satellite Modcod Scheme Selection via Gateway Coordination

The patent applies preliminary action by pre-establishing multiple fixed modcod schemes and their corresponding relationships before operation. The satellite receives predetermined modcod scheme pairs from the gateway, where each pair represents a pre-calculated optimal combination for specific channel conditions. This eliminates the need for real-time adaptive processing, as the appropriate scheme is already determined and stored, ready for immediate selection based on pre-assessed channel quality.

The patent implements parameter changes by switching between discrete, pre-defined modcod scheme pairs rather than continuously adapting parameters. Each modcod scheme represents a specific configuration of modulation order and coding rate. The satellite changes operational parameters by selecting from these discrete pre-optimized pairs, which are transmitted by the gateway based on uplink channel assessment, thereby achieving adaptation without complex real-time processing.

The gateway performs preliminary assessment of the uplink channel conditions and pre-determines the optimal modcod scheme pairs before transmission to the satellite. This shifts the adaptive decision-making process from the satellite to the gateway, where it can be performed with more computational resources. The satellite simply receives and executes these pre-determined scheme selections, maintaining adaptability while minimizing onboard processing complexity.

The patent introduces the gateway as an intermediary that mediates the adaptive modcod selection process. The gateway assesses channel conditions, determines optimal modcod pairs, and transmits these selections to the satellite. This intermediary approach allows complex adaptive decision-making to occur at the gateway rather than requiring equivalent processing capabilities on the satellite, thereby achieving adaptability without increasing satellite processing complexity.

The patent merges the selection of uplink and downlink modcod schemes into a unified pair transmitted by the gateway. Each modcod scheme pair represents a coordinated combination where the uplink and downlink configurations are pre-matched to work together efficiently. This merging approach simplifies resource allocation, as the satellite receives and implements complete coordinated pairs rather than independently managing separate uplink and downlink configurations.

The gateway performs preliminary coordination of uplink and downlink modcod schemes by pre-calculating and transmitting matched pairs to the satellite. This preliminary coordination eliminates the need for complex real-time resource allocation and coordination protocols, as the optimal combinations are determined in advance based on channel assessments and transmitted as ready-to-implement configurations.