Dynamic Caching Routing Strategy for LEO Satellite Nodes Based on Gradient Boosting Regression Tree
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A routing strategy based on traffic prediction and dynamic cache allocation for satellite nodes is proposed toaddress the issues of high propagation delay and overall delay of inter-satellite and satellite-to-ground links inlow Earth orbit (LEO) satellite systems. The spatial and temporal correlations of satellite network traffic wereanalyzed, and the relevant traffic through the target satellite was extracted as raw input for traffic prediction. Animproved gradient boosting regression tree algorithm was used for traffic prediction. Based on the trafficprediction results, a dynamic cache allocation routing strategy is proposed. The satellite nodes periodicallymonitor the traffic load on inter-satellite links (ISLs) and dynamically allocate cache resources for each ISL withneighboring nodes. Simulation results demonstrate that the proposed routing strategy effectively reduces packetloss rate and average end-to-end delay and improves the distribution of services across the entire network.
Abstract
A routing strategy based on traffic prediction and dynamic cache allocation for satellite nodes is proposed toaddress the issues of high propagation delay and overall delay of inter-satellite and satellite-to-ground links inlow Earth orbit (LEO) satellite systems. The spatial and temporal correlations of satellite network traffic wereanalyzed, and the relevant traffic through the target satellite was extracted as raw input for traffic prediction. Animproved gradient boosting regression tree algorithm was used for traffic prediction. Based on the trafficprediction results, a dynamic cache allocation routing strategy is proposed. The satellite nodes periodicallymonitor the traffic load on inter-satellite links (ISLs) and dynamically allocate cache resources for each ISL withneighboring nodes. Simulation results demonstrate that the proposed routing strategy effectively reduces packetloss rate and average end-to-end delay and improves the distribution of services across the entire network.
참고문헌 (26)
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