| SGIN | Satellite–ground integrated network |
| QoS | Quality of Service |
| LEO | Low-Earth orbit |
| SDN | Software-defined networking |
| NFV | Network function virtualization |
| VNF | Virtual Network Function |
| E2E | End-to-end |
| SFC | Service Function Chain |
| MINLP | Mixed integer non-linear programming |
| MHR | Minimum hop region |
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