Nongeosynchronous orbit (NGSO) satellite networks have the potential to provide very high throughput, low delay, broadband services on a global scale and complement or even compete with terrestrial fiber and wireless services. However, providing services with information rate and quality of service guarantees is very challenging in these systems primarily due to their inherent dynamic, time-variant connectivity between network nodes. This chapter describes a combination of algorithms and procedures that work collectively to ensure that assured end-to-end services can be provided in an NGSO satellite network.

Chapter Contents:

• 57.1 Introduction
• 57.2 NGSO constellations for broadband connectivity
• 57.3 Issues with QoS and SLAs in NGSO networks
• 57.4 Proposed approach
• 57.4.1 24x7 flow admission control
• 57.4.2 Edge-based NGSO satellite network QoS enforcement
• 57.4.3 Precision handover management
• 57.4.4 SDN-based QoS flow tables at user terminals, gateways, and satellite
• 57.5 Conclusion
• References

Inspec keywords: satellite communication; celestial mechanics; quality of service

Other keywords: time-variant connectivity; wireless services; inherent dynamic time-variant connectivity; nongeosynchronous orbit satellite networks; quality of service; terrestrial fiber; end-to-end data flow; NGSO satellite network

Subjects: Satellite communication systems