Resource management method suitable for multilayer satellite system

A satellite system and resource management technology, applied in the field of satellite communications

Inactive Publication Date: 2013-05-01
NANJING UNIV OF POSTS & TELECOMM
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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

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  • Resource management method suitable for multilayer satellite system
  • Resource management method suitable for multilayer satellite system
  • Resource management method suitable for multilayer satellite system

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example

[0085] Example: The resource management method applied to the entire multi-layer satellite system, the schematic diagram is as follows Figure 4 As shown, the specific steps are as follows:

[0086] Step 1. At the initial moment, wait for the user to access the network.

[0087] Step 2. Determine whether the user is a military user, if yes, go to step 3, otherwise, go to step 6.

[0088] Step 3. Connect military users to high-orbit satellite links.

[0089] Step 4. Determine whether the current high-orbit satellite has available resources, and if there are available resources, allocate resources to users on demand

[0090] Step 5. If there are no resources to allocate, the user enters the high-orbit satellite resource waiting queue and waits for resource allocation

[0091] Step 6. Connect ordinary users to the LEO satellite link

[0092] Step 7. Determine whether the current moment is a new snapshot, if yes go to step 8, if not go to step 10

[0093] Step 8. Take a new s...

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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 ...

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Application Information

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IPC IPC(8): H04W72/04H04B7/185
Inventor 孙力娟王苏丹肖甫叶晓国王汝传邹志强刘林峰李鹏
Owner NANJING UNIV OF POSTS & TELECOMM
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