Resource management method suitable for multilayer satellite system

Abstract

The invention relates to a resource management method suitable for a multilayer satellite system. The resource management method adopts the following design principle that high altitude satellites are used as reserved resources and are specially used for distributing resources for users with high priorities and high QOS (Quality of Service) requirements and distributing the resources for the user as required in a real-time manner; and meanwhile, low earth orbit satellites are combined and are used as ground network supplements, the characteristics of high-speed motion and the like of the low earth orbit satellites are considered and a method for dynamically distributing the resources for users with low priorities by using efficiency, cost and user publicity as evaluation indexes is designed. According to the design, the characteristics of the high altitude satellites and the low earth orbit satellites are combined; the priorities of the users are considered; the resources are distributed for the users with high priorities as required; a multi-target evaluation function is designed for the users with low priorities; and the multi-target evaluation function is nondimensionalized, so that in the resource management process, the evaluation indexes of other targets are not ignored due to an excessive function value of a certain index, and thus, a multi-target optimization method which has the advantages of short time delay, high bandwidth utilization rate and balanced resource distribution is integrally implemented.

Description

technical field [0001] The invention relates to a resource management method applied to a high-orbit satellite-low-orbit multi-layer satellite network with an interstellar link, specifically a method for ensuring the service quality requirements of users with different priorities, and assigning high-priority users on demand resources, and design a multi-objective optimized resource management method for low-priority users based on a genetic algorithm, which belongs to the technical field of satellite communication. Background technique [0002] The satellite network has the ability to flexibly allocate bandwidth on demand, and can provide a wide variety of data communication services. For the business needs of unpredictable bandwidth, satellites can be used as backup channels. Compared with the ground network, the low-orbit satellite network has the characteristics of dynamic topology changes, frequent switching of communication links, extended transmission time, relatively ...

AI Technical Summary

Problems solved by technology

These optimization problems are interrelated and contradictory. The present invention provides a multi-objective optimization resource management method based on genetic algorithm in the access network of multi-layer satellite systems (high-orbit satellites and low-orbit satellites), which satisfies different priorities as much as possible. Under the premise that users have different QoS requirements for resources in the network, the utilization rate of network resources is maximized, and the resource management problem of multi-users in a highly dynamic topology is solved

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