CN111970143A - Low-orbit satellite networking method based on SDN controller space information network visualization method - Google Patents
Low-orbit satellite networking method based on SDN controller space information network visualization method Download PDFInfo
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Abstract
A low-orbit satellite networking method based on a space information network visualization method of an SDN controller relates to the technical field of information and communication, in particular to a space information network visualization technology, and aims to solve the problems of difficult control and deployment and poor service flexibility of the existing space network. Aiming at the space information network widely researched at home and abroad at present, the invention utilizes the controller to monitor the flow state, the route and the like of the whole space network in real time, maps the flow state, the route and the like into the virtual network, utilizes network function virtualization and carries out centralized management at a control end to form a visual space information network system. The invention can improve the overall optimal configuration and management efficiency of the spatial information network resources and provide higher-quality service for more services as far as possible.
Description
Technical Field
The invention relates to the technical field of information and communication.
Background
The spatial network is a full-space, full-time, full-frequency, multi-user-oriented information network, and is more complex compared with the traditional terrestrial network. Based on a satellite constellation architecture, because of numerous satellite nodes, the traditional distributed architecture is applied to a large-scale satellite network, the control of the satellite network is very difficult, the user demand is increased, and the network flow is increased and uncontrollable.
The spatial information network is configured slowly, and in the conventional satellite network, when the satellite flies above the ground station, the ground station configures the satellite, so that a long time is needed for configuring the whole network.
Satellite services are mostly deployed in a provider-specific location in a terrestrial satellite hub, providing users with services with poor flexibility.
Therefore, in order to solve the problems of high cost and inflexibility of configuration resources in the spatial information network, the following adjustment is desired in the conventional spatial network:
1) and forming visualization for the network resources. The method comprises the step of performing visual analysis on node resources and link resources, wherein the node resources comprise various satellites and the like, and the link resources comprise cross-interlayer link resources, same-layer link resources and the like.
2) And realizing the centralized management of the space network. The virtualized space information network resources are managed in a centralized manner, the space network resources are configured flexibly and reasonably, and the space network resources are saved. The controller is used for monitoring and adjusting the flow state, the route and the like of the whole spatial network in real time to form a visual, dynamic and on-demand adjustment spatial information network system. Currently, spatial networks have the following problems:
1) control and deployment difficulties.
2) Poor flexibility of service;
disclosure of Invention
The invention provides a low-orbit satellite networking method based on a spatial information network visualization method of an SDN controller, aiming at solving the problems of difficult low-orbit satellite networking and poor service flexibility of the existing spatial network.
A low-orbit satellite networking method based on a space information network visualization method of an SDN controller comprises the following steps:
step one, a process virtualization simulation tool Mininet is used for building a network topology for simulation according to the existing satellite constellation system;
collecting spatial information data according to the network topology built in the step one to obtain network resources;
mapping the network resources obtained in the step two to an SDN controller, and realizing a visual interface in the SDN controller;
adding a new module Packet history In the SDN controller, counting the number of Packet _ In data packets, and realizing the analysis of Packet _ < list > format messages and the periodic counting of the number of Packet _ In messages;
step five, acquiring and storing the bandwidth of the link, and further converting the original data;
and step six, measuring the time delay of the network, and realizing the acquisition of each link time delay by the information acquisition module through calculating the continuous transmission link layer discovery protocol between the switches.
Seventhly, performing spatial information network visualization expression based on the SDN controller in the network topology built in the first step;
and step eight, networking the low-orbit satellite according to the network space information expressed in the step seven.
It still includes:
and step nine, adding a new class of PacketLoss to measure the packet loss rate of the network. Similarly, by sending port statistical information and comparing the received data packet and the transmission data packet of the switch, the packet loss rate of the whole network is obtained;
in the fifth step, the bandwidth of the link is collected and stored, and the original data is further converted, the specific method is as follows:
and creating a MonitorBandMeter class to realize the acquisition and storage of the link bandwidth. Its flow table entry is stored in Map form and contains a class object reference of the staticicscollector, and the raw data collected by the staticicscollector is further converted in the monitorBandMeter.
In the sixth step, the specific method for measuring the network delay is as follows:
a new class DelayMeter is added to measure the time delay of the network, and the information acquisition module realizes the acquisition of the time delay of each link by calculating the continuous transmission of a link layer discovery protocol between the switches.
In the sixth step:
the measurement of the network delay comprises two parts, namely, the real-time detection and storage of the transmission delay of the whole network, and the real-time detection and storage of the network experiment from the controller to the switch.
The invention has the following beneficial effects: in the invention, because the space network mainly comprises a satellite network, the low-orbit satellite is a research hotspot at home and abroad at present, and dozens or even hundreds of satellites are needed for the low-orbit satellite to achieve global coverage, the formed network nodes are numerous, compared with the ground network, the nodes in the satellite network are difficult to observe and control, and meanwhile, the network equipment is extremely expensive. The user quantity is increased sharply, which brings great burden to the network and causes that the network resource can not be utilized reasonably. The invention utilizes the information network visualization tool to configure the low-orbit satellite network, the networking of the low-orbit satellite is easy, and the service flexibility of the space network is greatly improved.
Drawings
FIG. 1 is a schematic view of a visual interface of a constructed simulation network topology mapped to a controller;
FIG. 1 is a schematic view of a visual interface of a constructed simulation network topology mapped to a controller.
Fig. 2 is a schematic diagram illustrating monitoring and acquisition of Packet In messages In a network by an SDN controller;
figure 3 is a schematic diagram of monitoring and collecting bandwidth between nodes in a network by an SDN controller;
figure 4 is a schematic diagram of monitoring and acquisition of delay in a network by an SDN controller;
fig. 5 is a diagram of monitoring and collecting packet loss rate messages in a network by an SDN controller;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Detailed Description
The first embodiment is described with reference to fig. 1 to 5, and the first embodiment of the present invention:
firstly, a simulation topology used is built according to a satellite constellation, an SDN controller is linked, a visual interface is realized on the controller, and meanwhile, the controller monitors network resources and collects key information, so that the visualization and centralized control of a space network are realized.
The method of the present invention, i.e. the spatial information network visualization method based on the SDN controller, is described in table 1 below.
TABLE 1 description of the Process
Finally, the feasibility of the spatial information network visualization method based on the SDN controller is demonstrated through simulation tests of all parts.
The invention has the following characteristics and remarkable progress:
1. the spatial information network visualization method based on the SDN controller solves the problem that the spatial information network is not visible, and network visualization is achieved on the interface of the controller.
2. The invention increases the monitoring and data acquisition of key resources in the network on the basis of the controller. The virtualized space information network resources are managed in a centralized manner, the space network resources are configured flexibly and reasonably, and the space network resources are saved. The controller is used for monitoring and adjusting the flow state, the route and the like of the whole spatial network in real time to form a visual and dynamic spatial information network system.
Claims (5)
1. A low-orbit satellite networking method based on a spatial information network visualization method of an SDN controller is characterized by comprising the following steps: it comprises the following steps:
step one, a process virtualization simulation tool Mininet is used for building a network topology for simulation according to the existing satellite constellation system;
collecting spatial information data according to the network topology built in the step one to obtain network resources;
mapping the network resources obtained in the step two to an SDN controller, and realizing a visual interface in the SDN controller;
adding a new module Packet history In the SDN controller, counting the number of Packet _ In data packets, and realizing the analysis of Packet _ < list > format messages and the periodic counting of the number of Packet _ In messages;
step five, acquiring and storing the bandwidth of the link, and further converting the original data;
and step six, measuring the time delay of the network, and realizing the acquisition of each link time delay by the information acquisition module through calculating the continuous transmission link layer discovery protocol between the switches.
Seventhly, performing spatial information network visualization expression based on the SDN controller in the network topology built in the first step;
and step eight, networking the low-orbit satellite according to the network space information expressed in the step seven.
2. The low-earth-orbit satellite networking method based on the spatial information network visualization method of the SDN controller of claim 1, further comprising:
and step nine, adding a new class of PacketLoss to measure the packet loss rate of the network. And similarly, by sending port statistical information and comparing the received data packet and the transmission data packet of the switch, the packet loss rate of the whole network is obtained.
3. The low-earth-orbit satellite networking method based on the spatial information network visualization method of the SDN controller of claim 1, wherein in the fifth step, the bandwidth of the link is collected and stored, and the raw data is further converted, and the specific method is as follows:
and creating a MonitorBandMeter class to realize the acquisition and storage of the link bandwidth. Its flow table entry is stored in Map form and contains a class object reference of the staticicscollector, and the raw data collected by the staticicscollector is further converted in the monitorBandMeter.
4. The low-earth-orbit satellite networking method based on the spatial information network visualization method of the SDN controller of claim 1, wherein in the sixth step, a specific method for measuring the time delay of the network is:
a new class DelayMeter is added to measure the time delay of the network, and the information acquisition module realizes the acquisition of the time delay of each link by calculating the continuous transmission of a link layer discovery protocol between the switches.
5. The method for low-earth-orbit satellite networking based on the SDN controller space information network visualization method of claim 4, wherein in step six:
the measurement of the network delay comprises two parts, namely, the real-time detection and storage of the transmission delay of the whole network, and the real-time detection and storage of the network experiment from the controller to the switch.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113872669A (en) * | 2021-09-27 | 2021-12-31 | 中国电子科技集团公司第五十四研究所 | Stateless distributed networking control system suitable for low-earth-orbit satellite network |
| CN114374427A (en) * | 2022-01-19 | 2022-04-19 | 苏州全时空信息技术有限公司 | Dynamic deployment method and system of controller in software-defined medium and low orbit satellite network |
| CN117674960A (en) * | 2023-11-15 | 2024-03-08 | 航天恒星科技有限公司 | Low orbit satellite network controller deployment method based on reliability correction |
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| CN111342993A (en) * | 2020-02-03 | 2020-06-26 | 西安交通大学 | SDN-based air-space-ground controller deployment architecture and control method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113872669A (en) * | 2021-09-27 | 2021-12-31 | 中国电子科技集团公司第五十四研究所 | Stateless distributed networking control system suitable for low-earth-orbit satellite network |
| CN114374427A (en) * | 2022-01-19 | 2022-04-19 | 苏州全时空信息技术有限公司 | Dynamic deployment method and system of controller in software-defined medium and low orbit satellite network |
| CN117674960A (en) * | 2023-11-15 | 2024-03-08 | 航天恒星科技有限公司 | Low orbit satellite network controller deployment method based on reliability correction |
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