Multilayer satellite network stable grouping method based on five vector mathematical models
A satellite network and mathematical model technology, applied in radio transmission systems, electrical components, transmission systems, etc., to achieve the effects of optimizing network stability, efficient network resources, and efficient management
Active Publication Date: 2013-10-16
HARBIN INST OF TECH
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[0005] The present invention provides a multi-layer satellite network stable grouping method based on a five-vector mathematical model in order to solve the contradiction between the existing satellite network topology stability, satellite node routing storage overhead, and satellite network service delay.
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specific Embodiment approach 1
[0027] Specific implementation mode one: combine figure 1 Describe this embodiment, the steps of this embodiment are as follows:
[0028] Step 1: abstract the multi-layer satellite network into a G=(V, E) network topology including satellite nodes and inter-satellite links; V={V N ={v i , i=1,...,N}, N} represents the satellite node set; E represents the inter-satellite link set, and satisfies the relationship E=V×V;
[0029] Step 2: Use the cost function F to select the satellite node pair (v i , v j );
[0030] Cost function F={f in step 2 ij (t)}={(T tra，ij (t), B ij (t))}(i, j=1,...,N) represents a link (v i , v j ) ∈ cost function of E;
[0031] Among them, T tra，ij (t) represents the propagation delay of the link; B ij (t)=w ij (t) / C ij Indicates bandwidth utilization, C ij Denotes a pair of satellite nodes (v i , v j ) link capacity; w ij (t) represents the satellite node v i is the source node satellite v j Transmission traffic load for the destinat...
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The invention discloses a multilayer satellite network stable grouping method based on five vector mathematical models, relating to satellite network grouping method in wireless communication field, and solving conflict among stability of existing satellite network topology, satellite node router storage cost and service time delay of satellite network. Five vector mathematical models describing multilayer satellite network topology property is adopted and link stability measuring function is utilized to realize optimizing configuration on network resource; the method for quantitatively analyzing contribution degree of links between different satellites to network stability and influence of satellite node or link failure on satellite delay change is adopted to reduce the length of the average shortest routing table of the network and improve the stability of network topology structure according to the network stability measuring function and the optimizing connection relation among satellites of the same group or adjacent groups. The inventive method can be applied multilayer satellite network environment in an aerospace, aerospace and ground integral information network.
Description
technical field [0001] The invention relates to a satellite network grouping method in the radio communication field. Background technique [0002] Under the development trend of the integration of space-ground integrated information networks including satellite networks, ground networks, high-altitude platform stations and other heterogeneous communication networks in the future, satellite networks, as an important component and connecting part of this system, will receive more and more attention and attention. However, domestic and foreign research on efficient and stable transmission of satellite networks is still immature, and the solutions to many key technologies and core issues are still in their infancy, especially for high-dynamic and high-density users, how to ensure high business service quality requirements question. [0003] From the initial development of geostationary orbit satellites to the current low-orbit single-layer constellation and multi-layer coopera...
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IPC IPC(8): H04B7/185
Inventor 郭庆徐玉滨周牧王振永刘晓锋顾学迈
Owner HARBIN INST OF TECH