Research On Intelligent Scheduling Technology Of MF-TDMA Satellite Channel Resources

With the rapid development of satellite communication technology,the satellite communication system is facing an increasing demand for channel resources and higher communication quality requirements.In order to better meet these requirements,this thesis studies a satellite channel resource intelligent scheduling technology based on Multi-Frequency Time-Division Multiple Address(MF-TDMA).This technology optimizes the resource utilization of the system and improves the service quality of the satellite communication system by rationally allocating channel resources.The main work of this thesis is as follows:(1)The key technology and resource scheduling algorithm of MF-TDMA are studied,and the system channel model of MF-TDMA with variable carrier bandwidth is established on this basis.Based on the system model,this thesis determines the optimization problem and constraints,and designs a new optimization objective function using parameters such as bandwidth resource utilization,remote station service reception rate and buffer remaining rate.(2)On the basis of the constructed system model,this thesis first analyzes the optimization problem of the system model,and then designs a system resource allocation strategy based on the greedy algorithm based on the analysis results,and conducts a comparative experiment simulation with the traditional algorithm.The simulation results show that in the case of multi-user stations,this strategy can effectively improve the slot resource utilization and the objective function value by 3%compared with the RCP-fit algorithm.(3)Aiming at the problem that the traditional resource allocation algorithm allocates channels and time slots separately,this thesis proposes a MF-TDMA resource joint allocation strategy based on genetic algorithm,which considers multiple factors such as user station type and channel quality,Channel resources are allocated using the idea of global optimization.Afterwards,this thesis simulates the convergence of the algorithm and the stability of the algorithm in various operating environments on the Matlab simulation platform.The simulation results show that the algorithm proposed in this thesis has the characteristics of high efficiency,flexible adaptation to various application environment requirements and high resource utilization.In summary,The algorithm in this thesis is suitable for the MF-TDMA satellite model with variable subcarrier bandwidth,and its strategy of joint scheduling of channel time slot resources can also ensure better resource utilization.