Konsep Inti
A joint optimization framework for determining the optimal number and placement of satellite gateways while dynamically managing routing and flow allocation to enhance network performance.
Abstrak
The paper proposes a joint optimization framework for satellite network infrastructure that addresses the challenge of optimizing gateway placement and dynamic routing strategies. The key highlights are:
- Modeling of a satellite and ground network system, including users, satellites, and gateway candidates.
- Formulation of an optimization problem that jointly determines the optimal static gateway placement and dynamic routing strategies, considering capacity constraints of links (including inter-satellite links).
- Integration of a weighted cost function that allows satellite operators to prioritize key performance indicators, such as the number of gateways, flow allocation, and traffic latency, based on their specific requirements.
- Simulation results demonstrating the effectiveness of the proposed approach in reducing the number of active gateways while balancing the trade-off between the number of gateways and traffic latency.
- Comparative analysis of different weight configurations in the cost function, showcasing the impact on the number of selected gateways and average latency.
The joint optimization framework enables satellite operators to optimize their network infrastructure by determining the optimal gateway placement and dynamic routing strategies, considering their specific operational priorities.
Statistik
The number of active gateways selected in the three cases are:
Case A: 2 gateways (1, 6)
Case B: 3 gateways (1, 5, 6)
Case C: 5 gateways (1, 3, 5, 6, 8)
The time and user average latency in the three cases are:
Case A: 69.9 ms
Case B: 59.8 ms
Case C: 47.6 ms