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In this paper, the AOS packet service data transfers structure is presented first. Based on it, the effective throughput rate of AOS packet service is analyzed. Then, in order to improve the effective throughput rate, a scheme of AOS cross layer transmission system is presented. In the proposed scheme, based on the space channel state, the dynamic optimization parameters of network layer, space date link protocol sublayer and sync and channel coding sublayer in AOS are selected. Then, the switch thresholds are presented. Finally, the effective throughput rate of the proposed AOS cross layer transmission system is simulated. Simulations show that the throughput rate can be optimized effectively.
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