关于在5G网络中使用卫星的四个国家安全问题-38页_1mb

5G and National Security: Satellite Integration Summary

Core Content

This policy brief explores the growing role of satellite communications in the development and security of 5G networks, emphasizing the need for policymakers to consider the national security implications of satellite integration. It outlines four key questions that should be asked to ensure the security and resilience of 5G networks, which are increasingly reliant on satellite components.

Main Viewpoints

• Satellites are becoming integral to 5G networks: As 5G aims to provide near-ubiquitous and low-latency connectivity, satellites are essential for extending coverage to rural and remote areas, supporting mobile devices, and enabling edge computing.

• 5G is a critical infrastructure: It is not just a technological advancement but a foundational element for modern economies, militaries, and societies, making its security a national priority.

• Satellite systems are not just about hardware: They involve a complex ecosystem of ground stations, launch facilities, and software systems, all of which are vulnerable to cyber threats and require robust security measures.

• New satellite technologies and business models are enabling integration: Companies like SpaceX, OneWeb, and traditional providers like Telesat and ViaSat are developing systems that allow for seamless integration of satellite and terrestrial networks.

Key Information

1. Satellite Systems Overview

Satellite systems consist of four basic components:

• Ground-based assets: Includes ground stations and launch facilities.
• Space-based assets: Communication satellites and other types like PNT and weather satellites.
• Links: Uplinks, downlinks, and crosslinks between satellites and ground stations.
• Connection points: Interfaces with other networks and devices, such as IoT devices and 5G infrastructure.

2. Evolution of Satellite Role in Telecommunications

• Historically separate: Satellite and terrestrial systems were largely isolated, with satellites used mainly for backhaul in hard-to-reach areas.
• GSO satellites: Geosynchronous satellites, positioned at ~36,000 km, provide continuous coverage but suffer from high latency.
• LEO satellites: Low Earth Orbit satellites, operating at ~280–550 km, offer lower latency and greater flexibility but require more frequent maintenance due to atmospheric drag.

3. Satellites and 5G: The Four Questions

Q1: Criticality

• Who depends on a satellite system?
  Assess the users, purposes, and future needs of the satellite system to understand its strategic importance.

Q2: Physical Architecture

• What is the ground infrastructure like?
  Evaluate the location, security, and resilience of ground stations and launch capabilities, which are crucial for satellite operations.

Q3: Data and Digital Systems

• How is data protected and ensured to move reliably?
  Focus on cybersecurity measures, data integrity, and the reliability of satellite systems in transmitting critical information.

Q4: Supply Chains

• How many vendors are involved in the supply chain?
  Understand the diversity and concentration of vendors in the satellite supply chain, which can affect system resilience and security.

4. National Security Implications

• Espionage and Disruption Risks: 5G networks, especially those with satellite components, are vulnerable to both intelligence gathering and disruptive attacks.
• Critical Infrastructure Dependency: Satellites are vital for GPS, remote sensing, and communication, and their failure could have cascading effects on national security.
• Need for Integrated Security Frameworks: Policymakers must ensure that satellite systems are secure, resilient, and defensible against cyber threats and potential malicious activity.

Conclusion

The integration of satellite and terrestrial systems in 5G networks is not only technically feasible but also economically viable due to advancements in satellite technology and business models. This integration brings new security challenges, necessitating a comprehensive approach to securing these systems. The four questions outlined in this brief serve as a framework for assessing the security and resilience of 5G satellite components.

Authors

• Melissa K. Griffith: Senior Program Associate at The Woodrow Wilson International Center for Scholars.
• Christopher M. Hocking: Lieutenant Colonel in the U.S. Air Force.

References

• "5G and Security: There is More to Worry about than Huawei" (Griffith, 2019)
• "Balancing the Promise and the Peril of 5G: The State of Play in the United States" (Griffith, 2021a)
• "Critical Infrastructure Protection: Commercial Satellite Security Should be More Fully Addressed" (2002a, 2002b)
• "Hack-A-Sat" (Space Security Challenge, 2020)
• "USC Satellite Database" (2021)
• "Low Earth orbit" (2020)
• National Aeronautics and Space Administration (2020)
• "Lockheed Martin and Omnispace Explore Space-Based 5G Global Network" (2021)
• "5G.wilsoncenter.org" (Wilson Center, 2021)