Clustering method for air mobile node and air-ground integrated clustering system

A technology for mobile nodes and cluster systems, which is used in data exchange through path configuration, radio/induction link selection and arrangement, and device selection. Guarantee real-time and high efficiency, improve the effect of speed and capacity

Inactive Publication Date: 2008-02-13
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, due to the particularity of the adjacent space, the existing clustering algorithm based on the ground Ad-hoc network cannot be effectively applied in the adjacent space.

Method used

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  • Clustering method for air mobile node and air-ground integrated clustering system
  • Clustering method for air mobile node and air-ground integrated clustering system
  • Clustering method for air mobile node and air-ground integrated clustering system

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Embodiment 1

[0029] This embodiment generally introduces the air mobile node clustering method based on air-ground integration. Since the clustering algorithm based on the ground Ad-hoc network cannot be effectively applied in the adjacent space, the embodiment of the present invention divides the clustering strategy into two levels, the air and the ground, and plans and adjusts through the integration of the air and the ground, so that the mobile nodes in the adjacent space are very good. The got clustered and maintained.

[0030] The track of the mobile node in the adjacent space can be planned and monitored by the track system of the ground station, which is predictable. Therefore, the cluster algorithm firstly predicts the track of the mobile node in the air by the ground station; Before the node executes a task of a certain stage, the mobile nodes in the air are grouped in advance at the ground station; then the cluster situation within the next task stage time is provided to the air ...

Embodiment 2

[0037] In the above air mobile node clustering method, the ground station performs pre-grouping on the air mobile nodes after track prediction. The specific method for the ground station to group the mobile nodes in the air in advance is shown in Figure 2, which is:

[0038] Step 201, within a certain area, perform preliminary grouping according to the regulations on the range of the number of mobile nodes in the group;

[0039] Step 202, apply the breadth-first algorithm, search and determine the connected branches in the group after the preliminary grouping, and adjust them to complete the cluster division;

[0040] Step 203, calculate the weighted expression value of each node in the group, generate a group leader, and the group enters a dynamic end state.

[0041] In step 201, since the number of nodes in each group has a range, the number of nodes in each group should be within the range. According to the initial network topology of air nodes in a future task stage, wit...

Embodiment 3

[0057] In the above process, when the grouping and the leader choose to enter the dynamic end point, the ground station will send the result of the pre-grouping to the mobile node in the air; after the mobile node in the air receives the grouping reference from the ground, it only needs to confirm whether it can communicate with the grouping Just refer to other members of your own group to communicate and connect. If you can communicate with other members of your own group in the grouping reference, you can form a cluster and determine the group leader according to the grouping reference, which greatly saves the calculation amount of the air node and the communication amount between nodes; otherwise, according to the real-time Grouping for cluster adjustment. The adjustment process can include the following three aspects: that is, nodes that are not connected to the reference cluster can be regarded as nodes leaving the group; neighbor nodes of the group that apply to join the...

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Abstract

The invention relates to a cluster method for an air mobile node comprising the following steps: track forecast about the air mobile node is implemented; the air mobile nodes can be divided into groups in advance in ground station with the result of track forecast; the grouping result is sent to the air mobile node; the air mobile node references the grouping result and makes cluster adjustment considering aerial real-time condition. The cluster method can effectively improve stability and flexibility of near-space cluster and reduce calculation amount of aerial high-speed mobile node. The invention also relates to an air-ground integration cluster system, comprising a ground station, an aerostat and an air mobile node, wherein, the aerostat is used for connecting the ground station and the air mobile node, information transferring function between the two points is executed when the aerostat goes up and treatment of cluster adjustment is processed selectively when the aerostat goes down. Within the system, the aerostat not only executes transferring function, but also bears part of calculation amount to undergo selective treatment, thereby ensuring real-time and high efficiency of communication between air and ground.

Description

technical field [0001] The present invention relates to a method for clustering mobile nodes in the air in the field of aerospace information, especially a method for clustering mobile nodes in the air based on track prediction of mobile nodes in adjacent space; A cluster system of mobile nodes in the air, especially an air-ground integrated cluster system based on track prediction of mobile nodes in near space. Background technique [0002] The near-space network is mainly composed of a backbone network (a number of aerostats in a quasi-stationary relationship with the ground) and a number of high-speed UAV subnets, which are responsible for completing the communication between user terminals, space-based and space-based users of the space-based mobile communication system. Processing and forwarding of communication data between terminals, user terminals, ground stations, and some space-based and space-based network application nodes. [0003] The mobile nodes in the near ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/28H04L12/28
Inventor 张军张涛刘科生
Owner BEIHANG UNIV
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