Fixed Ground Cell Beams for Low-Handover NGSO Communications

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional satellite and high altitude platform (HAP) communications systems experience frequent beam handovers, leading to inefficient use of computing and transmission resources, data transmission interruptions, and latency due to fixed beam patterns that vary in size and frequency/polarization, which is problematic for real-time applications.

Innovation Solution

Implementing a wireless communications system with fixed ground-based beams that generate dynamically varying beams with respect to the earth frame of reference, using precomputed beamforming coefficients to maintain a uniform cell pattern on the Earth's surface, eliminating the need for real-time computation and reducing the frequency of handovers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If non-geostationary orbit satellite communications systems are used to provide broadband coverage, then coverage area and mobility are improved, but signal interruption and service continuity deteriorate due to satellite movement and handover requirements

Engineering Contradiction:

Improvecoverage areaVSAvoidservice continuity

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The system segments coverage by deploying multiple non-geostationary orbit satellite beams that can be independently controlled and directed. Each satellite beam serves as an independent coverage segment that can be dynamically repositioned to maintain continuous service over the target area, eliminating service interruptions caused by single-satellite movement.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If non-geostationary orbit satellite communications systems are used, then mobility and coverage flexibility are improved, but system complexity and handover management deteriorate

Engineering Contradiction:

Improvecoverage flexibilityVSAvoidhandover management

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges multiple satellite beam coverages to create overlapping service areas, allowing user equipment to receive signals from multiple satellites simultaneously. This combination approach eliminates the need for complex handover procedures by maintaining continuous multi-satellite connectivity, thereby reducing handover management complexity while preserving coverage flexibility.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If ground-based cellular networks are used, then service continuity and coverage stability are improved, but deployment flexibility and rapid deployment capability deteriorate

Engineering Contradiction:

Improvecoverage stabilityVSAvoiddeployment flexibility

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent creates a universal communication system where non-geostationary orbit satellite beams can perform multiple functions: providing wide-area coverage like traditional satellites, maintaining stable connections like ground-based networks, and enabling rapid deployment like mobile systems. The satellite beams are designed to be multi-functional, serving both as mobile coverage extensions and as stable communication infrastructure.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Reliability

If traditional satellite or ground-based networks are used separately, then each system optimizes for its specific function, but overall system efficiency and resource utilization deteriorate

Engineering Contradiction:

Improvefunction-specific optimizationVSAvoidresource utilization

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent introduces a hybrid architecture where satellite beams act as intermediaries between ground-based cellular networks and user equipment. The satellite beams receive communication signals from ground stations and relay them to mobile users, and vice versa. This intermediary approach allows seamless integration of ground-based network resources with satellite coverage, improving overall resource utilization while maintaining the functional optimization of each subsystem.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP3732803B1Stationary fixed ground-based cells in a non-geostationary orbit communications system

Publication Date: 2026.05.20 HUGHES NETWORK SYST

Figure 1
Figure 2
Figure 3A

AI summary

A telecommunications platform comprises an antenna configured to generate a plurality of communications beams within a respective footprint on the surface of the Earth, wherein each communications beam provides data communications services over a respective cell coverage area on the surface of the Earth. The telecommunications platform further comprises a processor configured to control the plurality of communications beams of the antenna to form the respective cell coverage areas in a fixed cell pattern that remains essentially fixed relative to the surface of the Earth, such that, as the telecommunications platform travels through an orbit around the Earth, the footprint of the antenna sweeps across the fixed cell pattern and provides the communications services via the cell coverage areas of the fixed cell pattern that are within the footprint of the antenna at any given point in time.