LEO-MEO Satellite Hybrid Network Latency Management

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current terrestrial and satellite communication systems face challenges in providing high-speed and high-quality packet data services, especially with the increasing demand for ubiquitous global coverage and low latency, due to inefficiencies in transporting web traffic and strain on network resources.

Innovation Solution

A low-earth-orbit (LEO)/medium-earth-orbit (MEO) multi-satellite communications system is developed, utilizing LEO and MEO satellite constellations with advanced architectures and protocols to efficiently provide high-speed packet data services, including powerful FEC coding, adaptive modulation, and scalable gateway designs, supporting various terminal types and quality-of-service requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If satellite networks are used to provide ubiquitous global coverage, then coverage area is improved, but latency increases

Engineering Contradiction:
Improvecoverage areaVSAvoidlatency
Core Design Contradiction:
Area of stationary objectVSLoss of time

Solution Approach 1:

The patent segments the satellite network into multiple orbital layers (LEO, MEO, GEO) with different latency characteristics. User terminals can be served by LEO/MEO satellites for low-latency applications or GEO satellites for coverage-critical scenarios, allowing the system to segment traffic based on latency requirements while maintaining global coverage.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces terrestrial networks as intermediary nodes in a hybrid architecture. Traffic can be routed through terrestrial infrastructure when available to bypass satellite latency, while satellites provide coverage in remote areas. This intermediary approach allows the system to achieve both global coverage and low latency where possible.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If terrestrial communication systems are used to provide high-speed services, then data throughput is improved, but global coverage capability deteriorates

Engineering Contradiction:
Improvedata throughputVSAvoidglobal coverage
Core Design Contradiction:
ProductivityVSArea of stationary object

Solution Approach 1:

The patent merges terrestrial and satellite communication systems into a unified hybrid network architecture. High-speed terrestrial infrastructure provides capacity in populated areas, while satellite components extend coverage to remote regions. The system combines these complementary technologies to achieve both high throughput and global coverage simultaneously.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent creates a universal communication system that can operate in multiple modes (terrestrial-only, satellite-only, or hybrid) depending on location and service requirements. The same network infrastructure serves both high-capacity urban areas and remote regions, making the system universally applicable across diverse environments.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If sophisticated applications are deployed to meet user demands, then service quality is improved, but network resource strain increases

Engineering Contradiction:
Improveservice qualityVSAvoidnetwork resources
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent implements dynamic resource allocation and adaptive routing that adjusts network resource distribution based on real-time traffic conditions and application requirements. Sophisticated applications receive prioritized resources when needed, while standard traffic uses available capacity efficiently. This dynamic approach allows high service quality for demanding applications without permanently over-provisioning network resources.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS10944471B2System and method for providing high throughput data services using MEO and LEO satellite systems
Publication Date: 2021.03.09 HUGHES NETWORK SYST
  • US10944471B2 patent drawing
  • US10944471B2 patent drawing
  • US10944471B2 patent drawing

AI summary

A satellite communications system includes both LEO and MEO satellites, a gateway node (GN) which includes a MEO-GN modem and a LEO-GN modem, and a user terminal (UT) which includes a MEO-UT modem and a LEO-UT modem. The MEO-GN modem transmits data communications to the UT via the MEO satellites. The MEO-UT modem receives the data communications from the MEO-GN modem. The MEO UT modem forwards control messages regarding the data communications received from the MEO-GN modem, via a control message tunnel, to the MEO-GN modem. Via the control message tunnel, (i) the MEO-UT modem provides the control messages to the UT-LEO modem, (ii) the LEO-UT modem transmits the control messages to the LEO-GN modem via the LEO satellites, and (iii) the LEO-GN modem provides the control messages to the MEO-GN modem.