CN108282354A - Shared vehicle self-organizing network framework method based on SDN - Google Patents
Shared vehicle self-organizing network framework method based on SDN Download PDFInfo
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- CN108282354A CN108282354A CN201711101907.7A CN201711101907A CN108282354A CN 108282354 A CN108282354 A CN 108282354A CN 201711101907 A CN201711101907 A CN 201711101907A CN 108282354 A CN108282354 A CN 108282354A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/22—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks comprising specially adapted graphical user interfaces [GUI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/12—Discovery or management of network topologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
Abstract
The invention discloses a kind of shared vehicle self-organizing network framework method based on SDN, it is big mainly to solve present people demand of surfing the Internet, and can not surf the Internet whenever and wherever possible and the unmanageable problem of shared bicycle.Implementation step is：According to bicycle distribution situation is shared in region, deployment software defines network SDN controllers and infrastructure；According to shared bicycle functional requirement, the corresponding function module is set in software defined network；According to the hierarchical structure of transmission control protocol and Internet protocol TCP/IP, each layer function module for sharing bicycle node is selected；The related source code of each layer function module of shared bicycle node is compiled into corresponding firmware by composing software, and compiled firmware programming is subjected to the configuration of network parameter to sharing bicycle later into shared bicycle hardware device.The present invention mode for sharing bicycle ad hoc network, has widened the coverage area of network, is conducive to the centralized management of shared bicycle.
Description
Technical field
The invention belongs to fields of communication technology, further relate to a kind of shared vehicle self-organizing network framework method, can
For sharing vehicle networking and management.
Background technology
The arrival in shared bicycle epoch so that shared to become a kind of new life style and life attitudes.But therewith
And that comes also has prodigious difficult management, shares bicycle because its is convenient, cheap and flexible, receives the favor of people.
But, after it marches the streets and lanes in city, thus a series of problems generates：Shared bicycle arbitrarily parks,
Occupy pavement；Shared bicycle is stolen by thief, by malicious sabotage etc., therefore there is an urgent need for a kind of technologies to come to shared
Bicycle carries out centralized management.
At the same time, With the fast development of internet, there is an urgent need to access network whenever and wherever possible to improve interconnection by people
Net service experience.Although current 4G network speeds of download are enough fast, and more and more universal, but high campus network is always
It is the obstruction that people cannot enjoy freely Internet service.Therefore it is badly in need of that a kind of linking Internet of more convenient and efficient is wanted to take
It is engaged in meet increasingly increased flow demand.
Invention content
The purpose of the present invention is to provide a kind of shared vehicle self-organizing network framework method based on SDN, with more just
Prompt efficient Internet access service centralized management shares bicycle, expands the coverage area of wireless network, makes full use of interconnection
Net resource meets the growing network demand of people.
One, technical principles
1. wireless mesh network
Wireless mesh network, also known as wireless mesh network have become the mainstream of next generation network as a kind of multihop network
Technology is becoming the important component of next generation Internet technology.Good topology control structure can ensure that network covers
Lid quality reduces interference and conflict of the network in communication process, improves nothing with quality, extension Network morals are connected to
The expansion and throughput of gauze network reduce network energy consumption etc..
2.batman-adv communication protocols
In the present invention, wireless mesh network uses the networking mode based on batman-adv communication protocols.batman-adv
Communication protocol is that a kind of more outstanding wireless self-networking agreement batman-adv communication protocols in mesh networkings are designed to
One kernel-driven, it introduces a processing data packets expense that can almost disregard, preferably supports low side devices.
In addition, most of Wireless Routing Protocols operate in network layer.They send UDP packets, exchange routing iinformation, and in processing
The routing table of core realizes routing policy.And the operation of batman-adv communication protocols is completely in data link layer, by with
Too net frame carrys out transmission route information, and agreement also handles data traffic.Protocol encapsulation simultaneously forwards all data until reaching purpose
Ground, it simulates a virtual network exchange environment.Therefore, all nodes are just as being in local links, even if they are not
The topology situation for solving network, will not be influenced by network change.It can determine to transmit according to network existing resource situation
Path to obtain better transmission performance, and then ensures the quality assurance QoS demand of user.To promote the property of network
Energy.
3. software defined network SDN network framework
As shown in Figure 1, software defined network SDN is a kind of novel network architecture, its design concept is by network
Control plane is detached with data forwarding plane, programmable to go to realize by the software platform in the controller of concentration
Change control bottom hardware, realizes to the flexible distributed in demand of Internet resources.Pass through what is interacted between control layer and data Layer
Communication protocol openflow manages the equipment in bottom-layer network concentratedly.In SDN network, the network equipment is only responsible for simple
General hardware may be used in data forwarding, and refinement is independent network operation system by the operating system for being responsible for control originally
System is responsible for being adapted to different business characteristic, and logical between network operating system and business feature and hardware device
Letter can be realized by programming.
Two, technical solutions
According to above-mentioned principle, implementation of the invention is as follows：
(1) deployment software defines network SDN controllers：
It is divided according to service logic level, controller is divided into global controller and local controller, the global controller
Possess global view, for managing local controller, the shared bicycle in the local controller control area；
(2) deployment base facility：
Wireless base station is set up near the higher regional center of shared bicycle density, wireless base station uses wired intelligent acess
Mode accesses Internet, and the shared bicycle in wireless base station signal coverage area is directly connected with wireless base station；Wireless base
The shared bicycle stood outside signal cover connects Internet by ad hoc network mode；
(3) according to bicycle functional requirement is shared, following function module is set in software defined network SDN controllers：
Information management module：For obtaining the host information and data flow statistic of sharing bicycle in access network；
Visualization model：Information for receiving software defined network controller is shown in a manner of visualization interface
Out, including underlying device presentation of information, link information show that network topology is shown；
It is served by module：For carrying out the deployment of business and issuing for strategy, the scheduling and distribution of Internet resources are carried out
And the centralized management to sharing bicycle in control network；
(4) according to the hierarchical structure of transmission control protocol and Internet protocol TCP/IP, each layer for sharing bicycle node is selected
Function module；
(5) it configures and shares bicycle network interface：
Internet interfaces are set, Internet is connected for sharing bicycle；
Mesh wireless interfaces are set, the wireless self-networking of ground installation is used for；
User's access interface is set, is accessed for user；
Control unit interface is set, for connecting software defined network controller.
Compared with the prior art, the present invention has the following advantages：
1) compared with traditional car networking, shared bicycle is accessed network by the present invention, rather than makees
It is accessed for terminal, not only takes full advantage of the mobility of vehicle, expanded the coverage area of network, not only facilitate people's
Life, and solve and nowadays share the unmanageable problem of vehicle, it kills two birds with one stone.
2) present invention uses shared bicycle not have to automobile as radio node as radio node, and network topology is relatively more
Add stabilization, realizes that difficulty reduces.
3) base station that the present invention uses is arranged not necessarily like the same large area of conventional mobile communications network base station, only need to be specific
Region configuration is several, and cost of layout reduces.
Description of the drawings
Fig. 1 is the network architecture diagram of software defined network；
Fig. 2 is the implementation flow chart of the present invention；
Fig. 3 is the SDN controller deployment diagrams in the present invention；
Facility deployment diagram in the present invention of the positions Fig. 4；
Fig. 5 is the SDN controller function module maps in the present invention；
Fig. 6 is the shared bicycle nodal analysis method figure in the present invention；
Fig. 7 is the network interface figure that bicycle is shared in the present invention；
Specific implementation mode
Technical scheme of the present invention is described in detail below in conjunction with the accompanying drawings.
With reference to Fig. 2, the present invention realizes that steps are as follows：
Step 1, deployment software defines network SDN controllers.
In extensive SDN environment, need to consider controller deployment issue, because of the net that separate unit controller can be supported
Network scale is limited, and shared bicycle cross-region is widely distributed, and centralized deployment strategy is difficult to meet extensive cross-domain SDN environment
Demand.So the present invention selects distributed computing technology to build controller cluster, Regional Synergetic management and control are pressed by many motors control device
Bottom-layer network processed can promote network performance, reliability and scalability；
Distributed SDN controllers essence is a computer cluster, by the independent control of multiple interconnections
Composition, as shown in Figure 3.Controller is divided into global controller and local controller in Fig. 3, and local controller is deployed in
The concentrated area of shared bicycle, it is responsible to run the network function for not needing global network view, such as link discovery, interchanger
Practise function and local policy etc.；Global controller is deployed in management region, according to business demand layout and the local control of control
Device, coordination local controller share bicycle to bottom and are managed and control, and possess global network view, it is global to be responsible for operation
Network function, such as router-level topology, traffic engineering.
Step 2, deployment base facility.
As shown in figure 4, after having disposed software defined network SDN controllers, need to the shared bicycle in region point
Cloth situation is investigated, and then estimates station number required in region, determines optimal deployment position, determines suitable station
Height, antenna direction, angle of declination and signal cover etc.；
Then wireless base station is disposed on the site chosen, wireless base station is accessed using wired optical fiber connecting method
Internet, the shared bicycle in wireless base station signal coverage area are directly connected with wireless base station；Wireless base station signal is covered
Shared bicycle outside lid range connects Internet by ad hoc network mode.
Step 3, software defined network function module is set.
As shown in figure 5, according to shared bicycle functional requirement, following function is set in software defined network SDN controllers
Module：
Information management module, for obtaining the host information and data flow statistic of sharing bicycle in access network, and
In the database by these information storages；
Visualization model, for the information safeguarded in information management module database will to be read, and with the shape of web interface
Formula is presented to user comprising topology information submodule, facility information submodule and facility information submodule；The topology information
Submodule reads information management module number for showing the location information and network topology of sharing bicycle in access network
According to the shared bicycle location information in library, the inspection of database information is carried out using an independent thread cycle, if inspection
The location information for finding shared bicycle in database is changed, then real-time update Topology display；The facility information submodule
Block reads information management module database for showing the shared bicycle of access and connecting the user equipment information of its WIFI
In shared bicycle facility information and connect the user equipment information of its WIFI, including network ip address, physical MAC address,
And the basic informations such as transmission port number, and user is presented in the form of by web interface；The Service control submodule is used
Include in interface in mould application program in the block will be served by, i.e., by web interface interface, calling is served by module
Middle application program is called for user, and will be handled in user command service application module；
It is served by module, for carrying out the deployment of business and issuing for strategy, carries out the scheduling and distribution of Internet resources
And the centralized management to sharing bicycle in control network comprising order reading submodule, data control submodule sum number
According to control submodule；
The order reading submodule, for obtaining the user command read in visualization model, and calls application and development
Submodule related application in the block；The data control submodule obtains related in information management module according to application requirement
Data are sent to application program and are handled, and treated that result passes to net in a manner of data flow by application program
Shared bicycle in network；The application and development submodule, for developer according to some specific functional development application programs, and
Finally shown in visualization model.Data in the module processing information management module database are realized to sharing bicycle
Centralized management.Such as developer can be according to bicycle real time data be shared, what when counted in information management module database
Between, what site user is most using shared bicycle, the statistical information that SDN controller ends are sent according to shared bicycle client
To determine that shared bicycle launches region, supply volume, release time；The shared bicycle damaged is sent out from trend SDN controller ends
After sending repairing information, SDN control terminals to receive repairing information, staff is sent to repair.
Step 4, it according to the hierarchical structure of transmission control protocol and Internet protocol TCP/IP, selects to share bicycle node
Each layer function module.
TCP/IP layer time structure is one group of protocol layers structure for realizing network interconnection, including application layer, is passed
Defeated layer, network layer, data link layer and physical layer.As shown in fig. 6, wherein：
Application layer provides required various services to the user, and application layer includes multiple function modules, and the present invention is main
Dynamic host configuration module is selected, and control module is increased on the basis of original module, the control module is for obtaining bottom
Layer module transmits the information come up and is packaged processing to it, and information is transmitted to lower module by treated；The dynamic is main
Machine configuration module distributes the addresses IP automatically by operation state host configuration DHCP for shared bicycle；
Transport layer provides communication function end to end for application layer entity, ensures the complete of packet sequence transmission and data
Whole property, the layer define two main agreements：First, transmission control protocol TCP, the agreement be it is a kind of it is reliable, towards even
The Data Transport Protocol based on byte stream connect；Second is that User Data Protocol UDP, which is that one kind not ensureing reliable, nothing
The Data Transport Protocol of connection.The present invention increases openflow agreements on the basis of original agreement, and the function of the agreement is
Contacting between controller and interchanger is realized by handling different types of message.Transport layer includes multiple function moulds
Block, the present invention mainly selects transmission adaptation module and transport protocol module, and increases software definition in original module basis
Network module, software defined network module run openflow agreements, logical with software defined network controller for sharing bicycle
Letter；Transmission adaptation module is adapted to corresponding transport protocol for encapsulating network layer data packet, and according to application layer data packet；Transmission
The transport layer protocol that protocol module is determined according to transmission adaptation module, operation transmission control Transmission Control Protocol or user datagram
Udp protocol；
Network layer mainly solves the communication issue of host-to-host, includes Internet protocol IP and address resolution in network layer
Agreement ARP.IP agreement is a set of communication protocol being in communication with each other for all computers in network, according to mesh in IP data packets
IP address complete the addressing to host.ARP protocol is the agreement at physical address by IP address conversion.It is wrapped in network layer
Multiple function modules are included, the present invention mainly selects Internet protocol module and address resolution module, and Internet protocol module is for running
The IP agreement of network layer completes the message transmissions between host in network；Address resolution module, for running address resolution protocol
ARP, by IP address conversion at physical address；
Data link layer provides service, most basic service on the basis of the service that physical layer provides to network layer
It is that the data for carrying out source host network layer are reliably transmitted to destination host network layer.Data link layer includes multiple functions
Module, the present invention has mainly selected Wireless LAN module, and ad hoc network module is increased on the basis of original module.It should
Wireless LAN module passes through operation of wireless lan protocol construction WLAN；The ad hoc network module is by running networking
Agreement batman_adv realizes the ad hoc network shared between bicycle；
Physical layer, is located at the bottom of TCP/IP layer time structure, which is to ensure that initial data can be in various physics
It is transmitted on medium.Physical layer includes multiple function modules, and the present invention mainly selects wireless receiver module and wireless transmitter
Module, wireless receiver module are by wireless medium, received data packet；Wireless transmitter module is by wireless medium, hair
Send data packet.
Step 5, it configures and shares bicycle network interface.
After nodal analysis method design is completed, nodal analysis method correlation source code is compiled by corresponding firmware by composing software, and
By compiled firmware programming into the configuration in shared bicycle hardware device, needing to carry out network parameter later to sharing bicycle
Work makes shared bicycle that can realize ad hoc network and by SDN controller centralized controls, network interface figure as shown in fig. 7,
Implementation step is as follows：
5.1) Internet interfaces are set：One is first virtualized on physical network card virtually by virtualization technology first
Network interface eth0.1, then virtual LAN VLAN 1 is divided in eth0.1, and carry Internet interfaces；
5.2) mesh wireless interfaces are set：The carry mesh wireless interfaces first in Microsoft Loopback Adapter eth0.1, and by mesh
Wireless interface and Internet interfaces are bridged in virtual LAN VLAN 2, then the carry less radio-frequency on mesh wireless interfaces
Signal radio1, for sharing the ad hoc network between bicycle, which selects batman-adv ad hoc network association
View；
5.3) user's access interface is set：Virtualize a virtual network on physical network card by virtualization technology first
Interface eth0.2, then a virtual LAN VLAN 2 is divided on eth0.2, and carry user's access interface, then connect in user
Carry radio frequency signal radio2 on incoming interface is accessed for user, which is wireless access
Point ap mode, and the service set SSID of wireless radio frequency signal radio2 is arranged to the same, such user
Free switching access point in a network；
5.4) control unit interface is set：The carry control unit interface first in Microsoft Loopback Adapter eth0.2, and controller is connect
Mouth is bridged to user's access interface in virtual LAN VLAN 2, for connecting software defined network controller；
Above description is only example of the present invention, does not constitute any limitation of the invention above description only
It is example of the present invention, does not constitute any limitation of the invention, it is clear that one of skill in the art is come
Say, after understanding the content of present invention and principle, all may without departing substantially from the principle of the invention, structure, carry out form and
Various modifications and variations in details, but these modifications and variations based on inventive concept are still wanted in the right of the present invention
It asks within protection domain.
Claims (8)
1. a kind of shared vehicle self-organizing network framework method based on software defined network SDN, which is characterized in that including：
(1) deployment software defines network SDN controllers：
It is divided according to service logic level, controller is divided into global controller and local controller, which possesses
Global view, for managing local controller, the shared bicycle in the local controller control area；
(2) deployment base facility：
Wireless base station is set up near the higher regional center of shared bicycle density, wireless base station uses wired optical fiber connecting method
Internet is accessed, the shared bicycle in wireless base station signal coverage area is directly connected with wireless base station；Believe wireless base station
Shared bicycle outside number coverage area connects Internet by ad hoc network mode；
(3) according to bicycle functional requirement is shared, following function module is set in software defined network SDN controllers：
Information management module：For obtaining the host information and data flow statistic of sharing bicycle in access network；
Visualization model：Information for receiving software defined network controller is shown in a manner of visualization interface
Come, including underlying device presentation of information, link information show that network topology is shown；
It is served by module：For carry out business deployment and strategy issue, carry out Internet resources scheduling and distribution and
To sharing the centralized management of bicycle in control network；
(4) according to the hierarchical structure of transmission control protocol and Internet protocol TCP/IP, each layer function for sharing bicycle node is selected
Module；
(5) it configures and shares bicycle network interface：
Internet interfaces are set, Internet is connected for sharing bicycle；
Mesh wireless interfaces are set, the wireless self-networking of ground installation is used for；
User's access interface is set, is accessed for user；
Control unit interface is set, for connecting software defined network controller.
2. according to the method described in claim 1, it is characterized in that, selecting each layer function of shared bicycle node in step (4)
Module is to determine following corresponding module according in transmission control protocol and Internet protocol TCP/IP layer time structure：
Application layer includes：Control module and dynamic host configuration module：For the control module for managing shared bicycle concentratedly, this is dynamic
State host configuration module is used to distribute Internet protocol IP address automatically for shared bicycle；
Transport layer includes：Transport protocol module, software defined network module and transmission adaptation module；The transport protocol module is used for
Transport layer protocol transmission control protocol TCP or User Datagram Protocol UDP are run, the software defined network module is for connecting
Software defined network controller, the transmission adaptation module is for encapsulating each transport layer port adaptations pair of network layer data Bao Bingwei
The transport layer protocol answered；
Network layer includes：Internet protocol module and address resolution module；The Internet protocol module is for completing in network between host
Message transmissions, the address resolution module be used for by Internet protocol IP address conversion at physical address；
Data link layer includes：Wireless LAN module and ad hoc network module；The Wireless LAN module is for building wireless office
Domain net, the ad hoc network module are used to share the ad hoc network between bicycle；
Physical layer includes：Wireless receiver module and wireless transmitter module；The wireless receiver module is used to pass through wireless matchmaker
Jie's received data packet, the wireless transmitter module are used for through wireless medium transmission data packet, which is used for
Pass through wireless medium transmission data packet.
3. according to the method described in claim 1, being characterized in that the visualization model in step (3) includes：
Topology information submodule, for showing the location information and network topology of sharing bicycle in access network；
Facility information submodule, for showing that the user equipment information in bicycle and LAN, including network IP are shared in access
Address, physical MAC address and transmission port number；
Service control submodule includes being called for user in interface, and incite somebody to action for that will be served by mould application program in the block
It is handled in user command service application module.
4. according to the method described in claim 1, being characterized in that the module that is served by step (3) includes：
Order reading submodule, the user command read for obtaining visualization model, and call in application and development submodule
Related application；
Data control submodule obtains related data in information management module, is sent to application program according to application requirement
It is handled, and treated that result passes to the shared bicycle in network in a manner of data flow by application program；
Application and development submodule, for developer according to some specific functional development application programs, and finally in visualization mould
It is shown in block.
5. it is to pass through virtualization according to the method described in claim 1, Internet interfaces are arranged in being characterized in that step (5)
Technology first virtualizes a virtual network interface eth0.1 on physical network card, then virtual LAN is divided in eth0.1
VLAN1, and carry Internet interfaces.
6. it is in Microsoft Loopback Adapter according to the method described in claim 1, mesh wireless interfaces are arranged in being characterized in that step (5)
Carry mesh wireless interfaces in eth0.1, and mesh wireless interfaces and Internet interfaces are bridged to virtual LAN VLAN 2
In, and the carry radio frequency signal radio1 on mesh wireless interfaces, for sharing the ad hoc network between bicycle, the mesh is wireless
Interface protocol selects batman-adv ad hoc network agreements.
7. it is to pass through virtualization according to the method described in claim 1, user's access interface is arranged in being characterized in that step (5)
Technology first virtualizes a virtual network interface eth0.2 on physical network card, then a virtual LAN is divided on eth0.2
VLAN2, and carry user's access interface, the carry radio frequency signal radio2 on user's access interface are accessed for user,
User's access interface model selection is wireless access point ap mode.
8. it is in Microsoft Loopback Adapter according to the method described in claim 1, control unit interface is arranged in being characterized in that step (5)
Carry control unit interface in eth0.2, and control unit interface and user's access interface are bridged in virtual LAN VLAN 2, it uses
In connection software defined network controller.
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| CN110971514A (en) * | 2019-11-29 | 2020-04-07 | 湖南基石通信技术有限公司 | Pilot frequency gateway equipment and data interaction method of pilot frequency network |
| CN110971514B (en) * | 2019-11-29 | 2022-04-05 | 湖南基石通信技术有限公司 | Pilot frequency gateway equipment and data interaction method of pilot frequency network |
| CN112217555A (en) * | 2020-08-24 | 2021-01-12 | 成都天奥集团有限公司 | Formation satellite routing method based on SDN architecture and adopting SR routing protocol |
| CN112217555B (en) * | 2020-08-24 | 2022-05-10 | 成都天奥集团有限公司 | Formation satellite routing method based on SDN architecture and adopting SR routing protocol |
| CN113212011A (en) * | 2021-04-21 | 2021-08-06 | 成都四平软件有限公司 | Anti-counterfeiting method, device and system of intelligent seal and intelligent seal |
| CN114978854A (en) * | 2022-05-30 | 2022-08-30 | 北京计算机技术及应用研究所 | Domestic network resource dynamic sensing device |
| CN114978854B (en) * | 2022-05-30 | 2023-10-31 | 北京计算机技术及应用研究所 | Domestic network resource dynamic sensing device |
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