关键词: 异构融合网络, 空天地一体化, 深度强化学习, 频谱利用率, 接入协议, 公平尺度, 无量纲, 系统吞吐量

Abstract:

With the increasingly mature communication networks in the fields of air, space and ground, cross-domain heterogeneous converged technology has become an important direction for the integrated development of future communication networks. Driven by the demand for cross-domain heterogeneous in the converged network of air, space and ground, this study aims to solve the problem of low spectrum resource utilization in heterogeneous networks. It uses deep reinforcement learning method to establish a heterogeneous converged network system model and designs intelligent agent access algorithm with fair scale. The system throughput is selected as the maximization objective. The communication network standards that meet the characteristics of air, space and ground integration are selected and corresponding access protocols are extracted. Non-dimensional channel parameters are set according to the principle of fairness and simulation scenarios are established. Multiple comparison strategies are introduced in the simulation to statistically analyze system throughput, collision rate, utilization rate and channel selection ratio. The simulation results show that the system throughput of cross-domain heterogeneous fusion network is increased by more than 60%, system channel utilization efficiency is increased by 20%, and the collision rate of service packets is maintained at 10%, which verifies the adaptability of the algorithm to different business scenarios.

Key words: heterogeneous converged network, air, space and ground integration, deep reinforcement learning, spectrum utilization rate, access protoco, fair scale, dimensioning, system throughput