Single-direction crosslinks in satellite communication systems

The satellite communication system addresses the challenges of deploying and operating NGSO satellite constellations by using multiple antenna systems and transponder configurations for efficient and flexible crosslink signaling, optimizing cost and performance.

WO2024263221A2PCT designated stage expired Publication Date: 2024-12-26VIASAT INC
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Patent Information

Application Number
PCT/US2024/019890
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-03-17
Filing Date
2024-03-14
Publication Date
2024-12-26

AI Technical Summary

Technical Problem

Current satellite communication systems face challenges in efficiently deploying and operating large constellations of non-geostationary orbit (NGSO) satellites due to design tradeoffs between cost, complexity, performance, power consumption, reliability, weight, and size, particularly in supporting crosslink signaling between satellites.

Method used

The implementation of a satellite communication system with a payload that includes multiple antenna systems and transponder configurations on different faces of the satellite, allowing for efficient deployment and flexible operation of a high quantity of satellites, including directional reception and transmission capabilities, and independent crosslink signaling paths.

Benefits of technology

This configuration enables efficient deployment and operation of NGSO satellite constellations by optimizing cost, complexity, and performance while maintaining reliable and flexible signaling capabilities, including crosslink communications, thereby addressing the tradeoff challenges.

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Abstract

Satellites in a communication system may be equipped with phased array antenna systems that includes various configurations of antenna arrays. One or more first satellites may be configured as part of a forward link path to relay forward link signaling from a gateway terminal to a user terminal. One or more second satellites may be configured as part of a return link path to relay return link signaling from the user terminal to a gateway terminal. The first satellites, the second satellites, or both may include at least one crosslink relay configured to receive signaling from a first satellite via a reception antenna array on a first side of the crosslink relay within a crosslink frequency band, and configured to transmit signaling to a second satellite via a transmission antenna array on a second side of the crosslink relay within the crosslink frequency band.
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