CN116633413A - Method for realizing networking cloud of space ground resources based on NFV and SDN technologies - Google Patents
Method for realizing networking cloud of space ground resources based on NFV and SDN technologies Download PDFInfo
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- H—ELECTRICITY
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
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Abstract
According to the method for realizing networking of the aerospace ground resources based on the NFV and SDN technologies, provided by the application, the front end of the access station and the resource pool can execute the aerospace measurement and control tasks according to the task requirements of the aerospace measurement and control tasks by combining the management and control and arrangement center and station-level management and arrangement, and the resources such as baseband and signal processing can be dynamically allocated according to the requirements of the measurement and control services. And secondly, combining with a software-defined network, heterogeneous or remote equipment processing capacities can be flexibly combined according to requirements, so that the problems of tight coupling of software and hardware, high sealing degree, low system elasticity, long service deployment time, high operation cost and the like existing under the structure that a single-station cloud is changed into a multi-station cloud and a traditional chimney type spaceflight ground station are solved.
Description
Technical Field
The application relates to the field of aerospace measurement and control and satellite communication, in particular to a method for realizing networking clouding of aerospace ground resources based on NFV and SDN technologies.
Background
Along with the continuous progress of science and technology, the demand of human beings for space exploration is also higher and higher, which promotes the continuous update and development of the aerospace ground measurement and control system. At present, a chimney type structure is adopted in a space ground measurement and control station, a plurality of sets of measurement and control equipment are usually deployed in one measurement and control station, each set of measurement and control equipment can independently execute measurement and control tasks, but because a sharing mechanism does not exist between each set of measurement and control systems, each set of measurement and control system is isolated, and measurement and control resources in the measurement and control station cannot be fully utilized.
In the prior art, the above problems are solved by adopting a comprehensive baseband, and the comprehensive baseband is usually developed by adopting a special hardware platform represented by a DSP and an FPGA. At the system level, the special hardware platform lacks unified standard, so that the software and hardware functions cannot be separated, thereby causing higher product upgrading and maintenance cost and poorer function expansibility and flexibility. On the application level, due to the lack of comprehensive technical means of a plurality of baseband devices, when the type of a measurement control system or the number of tasks exceeds the processing capacity of a single device, the comprehensive scheduling of the plurality of baseband devices cannot be realized, and the problems of higher development cost and aging are caused. The new generation of comprehensive baseband adopts a virtualization technology which is feasible in technology and reachable in engineering, deploys processing resources in a unified software and hardware architecture, and provides measurement and control services for the whole measurement and control network as required as an elastic measurement and control cloud node.
With the increase of space missions and the development of measurement and control modes, future measurement and control systems are built into more and more space ground stations, and the space ground stations form a complex network with large scale and various types. For such a complex space ground station cluster, how to flexibly combine the measurement and control equipment in heterogeneous or different places according to the needs, and fully utilize measurement and control resources, so that the whole measurement and control system is developed into a distributed architecture to be a problem that researchers have to consider.
Disclosure of Invention
The application aims to overcome the defects of the prior art, and provides a method for realizing networking cloud of space ground resources based on NFV and SDN technologies, which can solve the problems of resource barriers and the like existing under the traditional chimney structure, improve the comprehensive use benefit of a measurement and control system, reduce the operation cost and improve the rapid adaptability to new demands.
The aim of the application is achieved by the following technical scheme:
the application provides a method for realizing networking of space ground resources based on NFV and SDN technologies, which is applied to networking and clouding of space ground resources, wherein the networking and clouding of space ground resources comprises a user end, a measurement, operation and control and service center, a management, control and arrangement center, an SDN control center, a station-level SDN controller, station-level management, control and arrangement and an access station front end and a resource pool, and the networking transmission of the access station front end and the resource pool is realized by a distributed measurement and control system architecture based on optical fiber transmission, and comprises the following steps:
the user side transmits a space measurement and control task to the measurement and control service center;
the SDN control center acquires the resource information of the front end of the access station and the resource pool through the station-level SDN controller, and uniformly configures and manages the station-level SDN controller in view of the requirements of the measurement and control service;
the control and arrangement center receives the aerospace measurement and control task, selects the station-level control and arrangement by utilizing a cloud measurement and control situation map, and sends the aerospace measurement and control task to the selected station-level control and arrangement;
the station-level management and control and arrangement selects the front end of the access station and the resource pool according to the resource information of the front end of the access station and the resource pool, and forwards the aerospace measurement and control task to the selected front end of the access station and the resource pool;
and the front end of the access station and the resource pool execute the aerospace measurement and control task according to the task requirement of the aerospace measurement and control task.
Optionally, the station-level controlling and arranging selects the front end of the access station and the resource pool according to the resource information of the front end of the access station and the resource pool, and forwards the aerospace measurement and control task to the selected front end of the access station and the selected resource pool, including:
the station-level management and control and arrangement configures and combines a network formed by the front end of the access station and a resource pool;
the station-level SDN controller selects an access station front end and a resource pool according to the received resource information of the access station front end and the resource pool;
and the station-level management and control and scheduling control station-level SDN controller sends the aerospace measurement and control task to the front end of the access station and processes the aerospace measurement and control task in a resource pool.
Optionally, the access station front end and the resource pool include a resource pool and a plurality of access station front ends, each access station front end includes a radio frequency front end device and a satellite navigation time service device, the radio frequency front end device adopts radio frequency broadband digitization with high sampling rate to separate radio frequency from baseband;
the satellite navigation time service equipment is used for uniformly acquiring global time and realizing absolute time marking of downlink data packets;
the access station front end and the resource pool execute the aerospace measurement and control task according to the task requirement of the aerospace measurement and control task, and the method comprises the following steps:
the radio frequency front-end equipment carries out IP (Internet protocol) processing on the generated digital information and distributes the digital information to the resource pool through the fiber-optic remote of a switching network;
the resource pool utilizes a network function virtualization technology to process the digital information in real time;
and the resource pool starts a corresponding measurement and control baseband container according to the task requirement of the aerospace measurement and control task so as to execute the aerospace measurement and control task.
Optionally, the radio frequency front-end device includes an uplink processing unit and a downlink processing unit;
and a downlink processing unit in the radio frequency front-end equipment utilizes the ranging pseudo code standard output by the uplink processing unit to realize the deterministic extraction of the ranging parameters.
Optionally, the cloud measurement and control situation map is obtained according to occupation conditions, dynamic data information and space position coordinates of the front end of the access station and the resource pool sent by the SDN control center.
Optionally, the network function virtualization technology includes an NFVI module and a VNFs module;
the NFVI module is used for virtualizing hardware resources for upper-layer use through the virtual facility platform and bearing various business applications and services of the testing, transporting and controlling and service center;
the VNs module is used for realizing the software of two parts of measurement and control functions of signal processing and information processing;
the station-level management and arrangement is further used for realizing management of the NFVI module and the VNFs module, network service arrangement functions, physical or software resources supporting virtualization and life cycle management of the VNFs.
The above-mentioned main scheme of the application and its various further alternatives can be freely combined to form multiple schemes, which are all the schemes that the application can adopt and claim; and the application can be freely combined between the (non-conflicting choices) choices and between the choices and other choices. Various combinations will be apparent to those skilled in the art from a review of the present disclosure, and are not intended to be exhaustive or all of the present disclosure.
According to the method for realizing networking of the aerospace ground resources based on the NFV and SDN technologies, provided by the application, the front end of the access station and the resource pool can execute the aerospace measurement and control tasks according to the task requirements of the aerospace measurement and control tasks by combining the management and control and arrangement center and station-level management and arrangement, and the resources such as baseband and signal processing can be dynamically allocated according to the requirements of the measurement and control services. And secondly, combining with a software-defined network, heterogeneous or remote equipment processing capacities can be flexibly combined according to requirements, so that the problems of tight coupling of software and hardware, high sealing degree, low system elasticity, long service deployment time, high operation cost and the like existing under the structure that a single-station cloud is changed into a multi-station cloud and a traditional chimney type spaceflight ground station are solved.
Drawings
Fig. 1 shows a schematic structural diagram of a space ground resource networking clouding provided by an embodiment of the present application.
Fig. 2 shows a schematic diagram of an internal structure of a space ground resource networking clouding provided by an embodiment of the application.
Detailed Description
Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present application with reference to specific examples. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The continued development of multitrack constellations and 5G technology is changing the lives of humans. The connection and access requirements are increasing, the ground satellite system is undergoing rapid transformation, and how to gain a dominant position in future competition in the satellite internet field is an important break-over in addition to accelerating layout at the space end and improving the processing capacity at the ground end. More and more space ground stations form a complex network of large scale and variety. For such a complex space ground station cluster, how to flexibly combine the measurement and control equipment in heterogeneous or different places according to the needs, and fully utilize measurement and control resources, so that the whole measurement and control system is developed into a distributed architecture to be a problem that researchers have to consider.
A software defined network (SDN, software Defined Network) is gradually accepted by device manufacturers and network architecture servers as a network architecture, where the key idea of SDN is to manage network hardware through centralized software to implement programmability, and at the same time separate the control function and forwarding function of the network hardware. By combining network function virtualization (NFV, network Functions Virtualization) with software defined network technology, the limitation of regions is broken, and various service services such as measurement and control, data transmission, communication and the like can be provided. The analog signals issued by the satellites are converted into digital IP packets, the digital IP packets are supported to be transmitted on any distance and network, the digital processing algorithm can be virtualized into network elements with independent functions, the digital processing algorithm is suitable for flexible deployment of a system, the support is provided for quick upgrading, and finally, resource aggregation calling and capacity optimization configuration are realized.
In order to realize the combination of network function virtualization and software defined network technology to solve the problems, the embodiment of the application provides a method for realizing the networking cloud of aerospace ground resources based on NFV and SDN technologies, which combines management and control with station-level management and control with arrangement, so that the front end of an access station and a resource pool can execute aerospace measurement and control tasks according to task requirements of the aerospace measurement and control tasks, and can dynamically allocate resources such as baseband, signal processing and the like according to the requirements of the measurement and control services, and the method is described in detail below.
The embodiment of the application provides a method for realizing networking and clouding of space ground resources based on NFV and SDN technologies, which is applied to networking and clouding of space ground resources, and referring to FIG. 1, FIG. 1 shows a schematic diagram of the structure of the networking and clouding of space ground resources provided by the embodiment of the application. The space ground resource networking cloud comprises a user side, a measurement, operation and control and service center, a management, control and arrangement center, an SDN control center, a station-level SDN controller, a station-level management, control and arrangement and an access station front end and a resource pool, wherein the networking transmission of the access station front end and the resource pool is realized based on a distributed measurement and control system architecture of optical fiber transmission.
The user side transmits a space measurement and control task to a measurement and control and service center;
the SDN control center acquires resource information of the front end of the access station and the resource pool through the station-level SDN controller, and uniformly configures and manages the station-level SDN controller in view of the requirements of the measurement, transportation and control service;
the management and control and arrangement center receives the aerospace measurement and control tasks, selects station-level management and arrangement by utilizing the cloud measurement and control situation map, and sends the aerospace measurement and control tasks to the selected station-level management and control and arrangement;
station level control and arrangement select an access station front end and a resource pool according to the resource information of the access station front end and the resource pool, and forward aerospace measurement and control tasks to the selected access station front end and the selected resource pool;
and the front end of the access station and the resource pool execute the aerospace measurement and control task according to the task requirement of the aerospace measurement and control task.
The space measurement and control tasks are issued to a management and control and arrangement center through a measurement, control and service center by cloud users, and are tasks of real-time ranging, speed measurement, angle measurement, remote control, remote measurement, data transmission processing and the like of the multipath measurement and control signals, and the management and control and arrangement center and the station-level management and control and arrangement are jointly connected with a network formed by the front end of an access station and a resource pool to be configured and combined.
Further, fig. 2 shows a schematic diagram of an internal structure of the networking clouding of space ground resources provided by the embodiment of the application. As shown in fig. 2, the user side, the measurement, control and service center and the management, control and arrangement center are sequentially connected, the management, control and arrangement center is connected with the SDN controller center, and the management, control and arrangement center and the SDN controller center are respectively connected with a plurality of access station resource pools through a switching network, and the plurality of access station resource pools are connected with a plurality of access station front ends through the switching network.
Station level control and arrangement of the network formed by the front end of the access and the resource pool for configuration and combination;
the station-level SDN controller selects an access station front end and a resource pool according to the received resource information of the access station front end and the resource pool;
and the station-level management and control and scheduling control station-level SDN controller sends the aerospace measurement and control task to the front end of the access station and the resource pool for processing.
The access station front end and the resource pool comprise a resource pool and a plurality of access station front ends, each access station front end comprises a radio frequency front end device and a satellite navigation time service device, and the radio frequency front end device adopts radio frequency broadband digitization with high sampling rate to separate radio frequency from a baseband;
the satellite navigation time service equipment is used for uniformly acquiring global time and realizing absolute time marking of downlink data packets.
The radio frequency front-end equipment carries out IP (Internet protocol) processing on the generated digital information, and distributes the digital information to a resource pool through the fiber remote of the switching network, so that the switching network is fully interconnected based on an IP packet switching mechanism, and the establishment of a transmission link of any communication node in the switching network can be realized;
the resource pool utilizes a network function virtualization technology to process the digital information in real time;
and the resource pool starts the corresponding measurement and control baseband container according to the task requirement of the aerospace measurement and control task so as to execute the aerospace measurement and control task.
The downlink processing unit in the radio frequency front-end equipment utilizes the ranging pseudo code standard output by the uplink processing unit to realize the deterministic extraction of the ranging parameters.
The SDN control center acquires the resource information of the front end of the access station and the resource pool through the station-level SDN controller, and uniformly configures and manages the station-level SDN controller in order to meet the requirements of the measurement, transportation and control service.
The control and arrangement center is an operation system for realizing configuration, management and operation and maintenance of data control, the control entities can be distributed and arranged in the space ground station group, and station-level control and arrangement is used for reporting signal and information-level data to the control and arrangement center.
The management and control and arrangement center is used for configuring, controlling and managing the station-level management and arrangement, carrying out fusion analysis on the signals and information data reported by the station-level management and arrangement, integrating all the virtualized resources of forwarding equipment and decision-making equipment of the station-level management and arrangement, and simultaneously utilizing the cloud measurement and control situation map to complete unified management on the virtualized resources, the virtualized network functions and the network services reported by the station-level management and arrangement, so as to realize the service functions of coordinated arrangement area management and control.
The cloud measurement and control situation map is obtained according to the occupation conditions, dynamic data information and space position coordinates of the front end of the access station and the resource pool, which are sent by the SDN control center. The space ground station group information processing method can reflect various information in the space ground station group, and besides the components of the traditional situation map, the space ground station group information processing method also comprises information such as time dimension, space dimension, health condition, physical resource domain, electromagnetic domain and the like. The first dimension and the time dimension cover the historical condition, the current state and the situation and the future trend of the cloud measurement and control virtualized resource; secondly, covering all land, sea, air, sky, net, electricity and other full-dimension spaces of all cloud measurement and control areas in the space dimension, including space coordinates and the like of equipment in each cloud measurement and control area; third, the hardware and software equipment serving all access stations and resource pools in the dimension of health condition can be used for randomly calling the use and maintenance conditions of each equipment; fourth, the physical resource domain covers the whole fiber network from the front end to the remote fiber of the resource pool, and the fiber network comprises dynamic data information of all transmission networks; fifth, the electromagnetic field covers parameters such as the number, the position, the transmitting frequency band, the transmitting power, the antenna polarization, the azimuth angle and the like of electromagnetic radiation sources in the cloud measurement and control area, and the electromagnetic field intensity of each area can be displayed according to an electric wave propagation model by considering the influence of factors such as topography, climate and the like.
In addition, the station-level management and control and the arrangement of the network formed by the front end of the access station and the resource pool are configured and combined, and the control station-level SDN controller sends the aerospace measurement and control task to the front end of the access station and the resource pool for processing. The station-level SDN controller selects the front end of the access station and the resource pool according to the received resource information of the front end of the access station and the resource pool, can effectively isolate high-speed digital information and the like received by the virtual baseband, and realizes separation between a control plane and a data plane so as to meet the requirements of time delay and bandwidth of different measurement and control tasks.
The radio frequency front-end equipment adopts radio frequency broadband digitization with high sampling rate to separate radio frequency from baseband.
The front end of the access station distributes the generated digital information to a resource pool through a switching network, the resource pool utilizes a network function virtualization technology to process the digital information in real time, and the decoupling sum of the measurement and control application and the physical platform is completed.
The network transmission of the front end of the access station and the resource pool is realized by a distributed measurement and control system architecture based on optical fiber transmission, and the optical fiber medium is adopted, so that software can be defined, and the purposes of generalization, synthesis and reconfiguration of the whole front end of the access station and the resource pool are realized.
And the resource pool starts the corresponding measurement and control baseband container according to the task requirement of the aerospace measurement and control task so as to execute the aerospace measurement and control task. The resource pool is realized by a virtual baseband pool based on a real-time cloud computing architecture, decoupling of measurement and control application and a physical platform can be realized by a network function virtualization technology on the basis of software and hardware, and an end-to-end hierarchical management arrangement system is introduced, so that the purposes of sharing resources in the pool and flexibly arranging upper service functions are finally realized.
The network function virtualization technology comprises an NFVI module and a VNFS module, wherein the NFVI module comprises computing, storing and network hardware resources, corresponding virtualized resources and a virtualized layer,
the hardware infrastructure of the module is formed by a high-performance general processor and an FPGA accelerator card, and hardware resources can be virtualized for upper layer use through a virtual facility platform. The basic hardware resources comprise hardware such as a physical server, acceleration card equipment and the like, and various physical resources form universal virtual computing resources, storage resources, network resources and acceleration resources through virtualization and bear various business applications and services of the testing, operation and control and service center.
The VNs module runs on the basis of the NFVI module, and can realize the software of two parts of measurement and control functions of signal processing and information processing. The signal processing can finish the functions of capturing and tracking measurement and control signals, bit rings, code rings, frame synchronization, encoding and decoding and the like, and the information processing mainly finishes the functions of measuring and control information processing and distribution, including telemetry processing, remote control processing, distance and speed measurement processing, remote control processing and the like.
The station-level management and arrangement comprises a VNM module and a VIM module, and the management of the VNFS module and the NFVI module, the network service arrangement function, the virtual physical/software resource supporting the virtualization and the life cycle management of the VNFS are realized through the VNM module and the VIM module, and the software environment of the module comprises a cloud platform management system, an operating system, a database management system, a virtualization management system and the like.
In addition, the resource pool virtualizes the hardware acceleration unit into calculation resources, and various measurement and control and communication systems such as signal filtering and sorting in measurement and control tasks, adaptation standard TT & C, spread spectrum, continuous phase modulation and the like are flexibly realized. The resource pool virtualizes an acceleration card (FPGA/GPU), a memory bank and a network card into calculation, storage and network resources through an NFV technology by adopting a general X86 architecture, a general operating system and a modern programming language, so that decoupling of measurement and control application and a physical platform is realized, an end-to-end hierarchical management arrangement system is introduced, resource sharing in the pool is realized, and the functions of upper-layer business are flexibly arranged.
Station-level management and orchestration can also utilize a station-level SDN controller to optimally combine and flexibly configure networks of access front-ends and resource pools, e.g., exchange of packet-fiber remotes, and to handle multiplexing of computing resources between each resource pool.
The SDN control center is used for acquiring global information, uniformly configuring and managing each station-level SDN controller based on the requirement of the operation and control testing service, and transmitting the occupation condition of the front end of the access station and the resource pool, the dynamic data information from the front end to the virtual baseband Chi Guangqian remote network, the space position coordinates and other information to the management and control and arrangement center so that the management and control and arrangement center obtains a cloud measurement and control situation map. The management and control center can complete the arrangement and deployment of the mapping of the measurement and control processing resources by utilizing the SDN control center after converging the total station information, fusing and analyzing and optimizing the service strategy.
In addition, the SDN control center can also send the use condition and maintenance condition of the hard and software equipment of all access stations and resource pools to the management and control center, and the cloud measurement and control situation map is obtained by configuring, managing and analyzing the information in consideration of the influence of topography, climate and the like on the measurement and control task. And making a decision according to the cloud measurement and control situation map, and selecting a measurement and control link consisting of an access station and a resource pool of a proper area to jointly execute the aerospace measurement and control task.
The cloud measurement and control situation map comprises information such as association relation between cloud measurement and control areas, key nodes, topic situation, overall situation and information source tracing, is beneficial to configuration, control and management of station-level control and arrangement by a control and arrangement center, and improves deployment of layering network services of the aerospace ground station.
After the management and control center analyzes various information of the spaceflight ground station group to obtain a cloud measurement and control situation map, the cloud measurement and control situation map is made, and the management and control center makes a decision to select proper station-level management and control and arrangement by using the cloud measurement and control situation map.
The resource pool also comprises a computing node, the computing node virtualizes the resource information, a baseband container is started to process the aerospace measurement and control task according to the requirement of the aerospace measurement and control task, and after the processing is completed, the resource pool sends a processing result to a management, control and arrangement center. The resource information comprises signal processing information and resource occupation conditions, and the access station front end and the resource pool are used for sending the signal processing information and the resource occupation conditions of the resource pool to the station-level SDN controller.
The station-level SDN controller adopts an OpenFlow protocol, takes an IP address and a port as a basis, and introduces or outputs network data from a physical port of a switch through a FlowTable control flow table to complete configuration, control and management of front-end packet optical fiber remote switching, effectively isolates high-speed digital information and the like received by a virtual baseband, so as to realize separation between a control plane and a data plane and meet the requirements of time delay and bandwidth of different measurement and control tasks.
In addition, the measurement and control stations in different geographic positions respectively receive and transmit radio frequency signals through respective antennas and radio frequency front-end equipment. The radio frequency signal enters the radio frequency front-end equipment through a radio frequency channel, is firstly subjected to digital-to-analog conversion through the ADC equipment, and is subjected to digital down-conversion and down-sampling, and then is subjected to packet grouping by the equipment information data packet of the ADC equipment and the digital down-converted intermediate frequency data packet. The radio frequency front-end equipment generates digital information after a packaging process, becomes high-speed sampling data after IP processing and optical fiber remote drawing, and enters a switching network, and the switching network distributes the high-speed sampling data to a resource pool.
After the resource pool receives the digital information, the internal cloud platform software realizes the virtualization of hardware resources, each computing node can also start a corresponding measurement and control baseband container according to task demands, receive high-speed sampling data and process the high-speed sampling data in real time, and the processing result is sent to a management and control and arrangement center through a station-level SDN controller and an SDN control center to serve measurement and control services and centers as well as cloud users.
The process of the computing node for processing the digital information comprises the following steps: the cloud platform management system starts a corresponding measurement and control baseband container according to task requirements of a space flight measurement and control task by using a computing node, carries out real-time signal processing on the high-speed sampling data from a switching network after receiving the high-speed sampling data, issues task requirements to an FPGA acceleration card management center in an NFVI module, and the FPGA acceleration card management center finishes resource allocation of the FPGA acceleration card and loads related capturing or coding algorithm programs so as to realize functions of real-time ranging, speed measurement, angle measurement, remote control, telemetry and data transmission processing of multipath measurement and control signals in the VNs module and send processing results to a measurement and control service center and cloud users through a station SDN controller and an SDN control center.
Compared with the prior art, the embodiment of the application has the following beneficial effects:
(1) By combining the management and control and arrangement center and the station-level management and arrangement, the front end of the access station and the resource pool can execute the aerospace measurement and control task according to the task requirements of the aerospace measurement and control task sent by the measurement and control and service center, and can dynamically allocate resources such as baseband, signal processing and the like according to the requirements of the measurement and control service.
(2) The application utilizes network function virtualization technology and software defined network technology to realize unified connection and allocation between the front end of each access station and the resource pool, thereby completing complex network deployment of the ground station.
(3) After the task is completed, the resources are returned to the resource pool, so that the comprehensive use benefit of the measurement and control system can be improved, and the operation cost can be reduced.
(4) The SDN control center and the station-level SDN controller separate the data plane from the control plane service, so that unified resource management, automatic flow, resource scheduling and adjustment strategies are realized, and the resource utilization rate is greatly improved.
(5) Aiming at different service types and corresponding service processing resource requirements, the support of omnibearing service types such as telemetry, measurement and control, data transmission and the like is realized, and the resources in each resource pool can be managed and scheduled more flexibly and conveniently.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (6)
1. The method is characterized by being applied to space ground resource networking clouding based on NFV and SDN technologies, wherein the space ground resource networking clouding comprises a user end, a measurement, operation and control and service center, a management, control and arrangement center, an SDN control center, a station-level SDN controller, station-level management, control and arrangement, an access station front end and a resource pool, and the networking transmission of the access station front end and the resource pool is realized based on a distributed measurement and control system architecture of optical fiber transmission, and comprises the following steps:
the user side transmits a space measurement and control task to the measurement and control service center;
the SDN control center acquires the resource information of the front end of the access station and the resource pool through the station-level SDN controller, and uniformly configures and manages the station-level SDN controller in view of the requirements of the measurement and control service;
the control and arrangement center receives the aerospace measurement and control task, selects the station-level control and arrangement by utilizing a cloud measurement and control situation map, and sends the aerospace measurement and control task to the selected station-level control and arrangement;
the station-level management and control and arrangement selects the front end of the access station and the resource pool according to the resource information of the front end of the access station and the resource pool, and forwards the aerospace measurement and control task to the selected front end of the access station and the resource pool;
and the front end of the access station and the resource pool execute the aerospace measurement and control task according to the task requirement of the aerospace measurement and control task.
2. The method for implementing network cloud of space and ground resources based on NFV and SDN technologies as set forth in claim 1, wherein the station-level controlling and orchestrating to select the access station front end and the resource pool according to the resource information of the access station front end and the resource pool, and forward the space measurement and control task to the selected access station front end and resource pool, comprising:
the station-level management and control and arrangement configures and combines a network formed by the front end of the access station and a resource pool;
the station-level SDN controller selects an access station front end and a resource pool according to the received resource information of the access station front end and the resource pool;
and the station-level management and control and scheduling control station-level SDN controller sends the aerospace measurement and control task to the front end of the access station and processes the aerospace measurement and control task in a resource pool.
3. The method for realizing the networking of aerospace ground resources based on the NFV and SDN technologies according to claim 1, wherein the access station front end and the resource pool comprise a resource pool and a plurality of access station front ends, each access station front end comprises a radio frequency front end device and a satellite navigation time service device, and the radio frequency front end device adopts high-sampling rate radio frequency broadband digitization to separate radio frequency from a baseband;
the satellite navigation time service equipment is used for uniformly acquiring global time and realizing absolute time marking of downlink data packets;
the access station front end and the resource pool execute the aerospace measurement and control task according to the task requirement of the aerospace measurement and control task, and the method comprises the following steps:
the radio frequency front-end equipment carries out IP (Internet protocol) processing on the generated digital information and distributes the digital information to the resource pool through the fiber-optic remote of a switching network;
the resource pool utilizes a network function virtualization technology to process the digital information in real time;
and the resource pool starts a corresponding measurement and control baseband container according to the task requirement of the aerospace measurement and control task so as to execute the aerospace measurement and control task.
4. The method for realizing networking and clouding of space ground resources based on NFV and SDN technologies as recited in claim 3, wherein the radio frequency front-end equipment comprises an uplink processing unit and a downlink processing unit;
and a downlink processing unit in the radio frequency front-end equipment utilizes the ranging pseudo code standard output by the uplink processing unit to realize the deterministic extraction of the ranging parameters.
5. The method for realizing networking of aerospace ground resources based on NFV and SDN technologies according to claim 1, wherein the cloud measurement and control situation map is obtained according to occupancy conditions, dynamic data information and space position coordinates of the access station front end and a resource pool sent by an SDN control center.
6. The method for realizing networking and clouding of space floor resources based on NFV and SDN technologies as claimed in claim 3, wherein the network function virtualization technology comprises an NFVI module and a VNFs module;
the NFVI module is used for virtualizing hardware resources for upper-layer use through the virtual facility platform and bearing various business applications and services of the testing, transporting and controlling and service center;
the VNs module is used for realizing the software of two parts of measurement and control functions of signal processing and information processing;
the station-level management and arrangement is further used for realizing management of the NFVI module and the VNFs module, network service arrangement functions, physical or software resources supporting virtualization and life cycle management of the VNFs.
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