CN104506228A - WIFI (wireless fidelity) application system based on satellite communication - Google Patents
WIFI (wireless fidelity) application system based on satellite communication Download PDFInfo
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Abstract
The invention discloses a WIFI (wireless fidelity) application system based on satellite communication. The system mainly comprises a gateway station, a communication satellite transponder, a satellite terminal and a WIFI base station, wherein the gateway station is used for realizing functions of receiving and transmitting data of a satellite feed link, managing network resources, managing an operating system and the like; the communication satellite transponder is used for realizing a function of transponding data of a satellite user link and the data of the satellite feed link; the satellite terminal is used for realizing a function of receiving and transmitting the data of the satellite user link; the WIFI base station is used for realizing a wireless receiving and transmitting function for data of a user link; the satellite feed link is a communication link between a satellite and the gateway station; the satellite user link is a communication link between the satellite and the satellite terminal; the user link is a communication link between the WIFI base station.
Description
Technical field
The present invention relates to a kind of WIFI application system based on satellite communication, belong to satellite communication field.
Background technology
Society enters the information age, and people are more and more stronger to the demand of information mutual communication, arrived indispensable stage.In big and medium-sized cities and the developed area of China, the covering of terrestrial wideband network almost can reach 100%.But, in economically less developed region, particularly in remote mountain areas, rural area or some specific emergent scene, often network can't cover or network wrecks, and causes the smooth or communication disruption of communication.Satellite communication becomes the effective way addressed this problem, but traditional VSAT satellite communication is applied because the shortcomings such as operation cost is high, installation and maintenance difficulty is large, band efficiency is low limit it.
Summary of the invention
Technology of the present invention is dealt with problems and is: apply limited present situation for existing terrestrial wideband communication network development bottleneck and traditional VSAT satellite communication, a kind of WIFI application system based on satellite communication being applicable to broadband connections local networking application is provided, solves the problems such as traditional VSAT satellite communication operation cost is high, installation and maintenance difficulty is large, band efficiency is low.System does not need special configuration and operation that the technical advantage of satellite communication and WIFI access and interests just can be made to be maximized, and saves ICBM SHF satellite terminal installation and maintenance expense, improves service efficiency and the Broadband Satellite utilance of VSAT, reduce operation cost.
Technical solution of the present invention is: a kind of WIFI application system based on satellite communication, comprises gateway station, communication satellite coverage, ICBM SHF satellite terminal and WIFI base station;
Gateway station, comprise operation exchange routing subsystem, business data processing subsystem, network synthesis ADMINISTRATION SUBSYSTEM and antenna rf subsystem, the route of switching and routing subsystem responsible business datum and forwarding capability and the interface of system and ground network is provided, namely switching and routing subsystem receives the Internet network user data on ground, through route, data after exchange form baseband signal and comprise comprehensive network management data and business datum, this comprehensive network management data is delivered to network synthesis ADMINISTRATION SUBSYSTEM, business data processing subsystem is given by the business datum in baseband signal, switching and routing subsystem receives the data of business data processing subsystem, through exchanging, Internet network and network synthesis ADMINISTRATION SUBSYSTEM is given after route,
Network synthesis ADMINISTRATION SUBSYSTEM receives the comprehensive network management data that operation exchange routing subsystem is sent here, analyze according to this comprehensive network management data, to commence business user authentication and accounting management, and distribute priority and Resourse Distribute for different business user, real time monitoring is carried out to the running status of the WIFI application system based on satellite communication simultaneously; Network synthesis ADMINISTRATION SUBSYSTEM by occur in user authentication, User Priority, Resourse Distribute and gateway station fault, these information feed back of abnormal alarm are to switching and routing subsystem;
Business data processing subsystem, comprise forward link subsystem and return link subsystem, forward link subsystem, for the business datum in the baseband signal that receives operation exchange routing subsystem and send here, becomes intermediate-freuqncy signal after encoded, framing, modulation and delivers to less radio-frequency subsystem; The intermediate-freuqncy signal that return link subsystem is sent here for receiving less radio-frequency subsystem, forms baseband signal after carrying out demodulation, solution frame, decoding and gives operation exchange routing subsystem, carry out business datum switching and routing to this intermediate-freuqncy signal;
Antenna rf subsystem is transmitted into satellite repeater the data of intermediate-freuqncy signal after up-conversion, power amplification that business data processing subsystem is sent here; Antenna rf subsystem receives satellite repeater radiofrequency signal, low noise amplification and down-conversion are carried out to this radiofrequency signal after become radiofrequency signal and give business data processing subsystem;
ICBM SHF satellite terminal, comprise the first antenna, the first outdoor unit and the second indoor unit, be responsible for the transmission-receiving function of satellite user link data and the data-interface with WIFI base station is provided, first antenna will receive the radiofrequency signal of satellite repeater, give outdoor unit, the emission of radio frequency signals simultaneously sent here by outdoor unit is to satellite repeater; Outdoor unit is responsible for the intermediate-freuqncy signal from indoor unit to be sent to the first antenna through up-conversion, power amplification, radiofrequency signal from first day line is formed intermediate-freuqncy signal after low noise amplification, down-conversion simultaneously and be sent to indoor unit, complete the conversion of data between radio frequency and intermediate frequency; Indoor unit is responsible for the data from WIFI base station to be sent to outdoor unit after coding, modulation, gives WIFI base station by the signal from outdoor unit after demodulation, decode procedure simultaneously;
WIFI base station, comprises the second antenna, the second outdoor unit and the second indoor unit, and WIFI base station receives user terminal data by the second antenna, and give outdoor unit, the emission of radio frequency signals simultaneously sent here by outdoor unit is to user terminal; Outdoor unit is responsible for the intermediate-freuqncy signal from indoor unit to be sent to the second antenna through up-conversion, power amplification, radiofrequency signal from the second antenna is formed intermediate-freuqncy signal after low noise amplification, down-conversion simultaneously and be sent to indoor unit, complete the conversion of data between radio frequency and intermediate frequency; Indoor unit is responsible for the data from ICBM SHF satellite terminal to be sent to outdoor unit after coding, modulation, gives ICBM SHF satellite terminal by the signal from outdoor unit after demodulation, decode procedure simultaneously;
Communication satellite coverage, receives the data of ICBM SHF satellite terminal, after low noise amplification, He Lu, frequency conversion, power amplification, gives gateway station; Receive the data sent here of gateway station through low noise amplification, frequency conversion, along separate routes, send to ICBM SHF satellite terminal after power amplification.
The present invention's advantage is compared with prior art:
1) by the solution that ICBM SHF satellite terminal module combines with WIFI base station module, do not need special configuration and operation that the technical advantage of satellite communication and WIFI access and interests just can be made to be maximized.Compared with configuring expensive ICBM SHF satellite terminal with each user of conventional satellite communication, this system saves purchase and the mounting cost of terminal, improve service efficiency and the broadband utilance of conventional satellite communication, reduce operation cost, for satellite communication provides new market forces.
2) native system uses existing satellite repeater resource, and integrated have the gateway station of ground Internet interface, traditional VSAT ICBM SHF satellite terminal module and WIFI base station module, have dispose convenient, invest little, build fast, the easy feature such as expansion.System also realizes several kilometers of remote linkage by WIFI base station module by radio remote technology of jumping and covers, without the need to new satellite link just easily extensible system ovelay range to form another far-end.
Accompanying drawing explanation
Fig. 1 is present system composition structure chart;
Fig. 2 is present system gateway station schematic diagram;
Fig. 3 is present system ICBM SHF satellite terminal schematic diagram;
Fig. 4 is present system WIFI base station schematic diagram;
Fig. 5 is specific embodiments of the present invention schematic diagram.
Embodiment
Basic ideas of the present invention are: the present invention is by conventional satellite communication and WIFI base station Integrated predict model, compared with configuring expensive ICBM SHF satellite terminal with each user of conventional satellite communication, this system saves purchase and the mounting cost of terminal, improve service efficiency and the broadband utilance of conventional satellite communication, reduce operation cost, for satellite communication provides new market forces.System by MESH far the technology of jumping realize several kilometers of remote linkage with formed another far-end cover, without the need to new satellite link just easily extensible system ovelay range.
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of WIFI application system based on satellite communication, comprises gateway station, communication satellite coverage, ICBM SHF satellite terminal and WIFI base station.As shown in Figure 2, gateway station is made up of operation exchange routing subsystem, business data processing subsystem, network synthesis ADMINISTRATION SUBSYSTEM and antenna rf subsystem, realizes the functions such as the transmitting-receiving of satellite repeater data, network synthesis management, business data processing, business datum route switching.As shown in Figure 3, ICBM SHF satellite terminal is made up of the first antenna, the first outdoor unit and the first indoor unit, realizes the functions such as the transmitting-receiving of satellite repeater data, business data processing and WIFI data interaction.As shown in Figure 4, WIFI base station is made up of the second antenna, the second outdoor unit and the second indoor unit, realizes the functions such as the transmitting-receiving of user terminal data, business data processing and ICBM SHF satellite terminal data interaction.
In order to this method embodiment is described, according to building a set of WIFI application system based on satellite communication as shown in Figure 5, comprise 1 cover communication satellite coverage, 1 cover gateway station, 1 cover ICBM SHF satellite terminal, 21 cover WIFI base stations and 3 cover user terminals.Suppose that communication satellite coverage uses 10MHz bandwidth Ku band satellite resource, gateway station uses 9m bore Ku band antenna, configuration 750W power amplifier, gateway station provides terrestrial wideband network interface, ICBM SHF satellite terminal uses 1m bore Ku frequency range VSAT antenna, configuration 30W power amplifier, WIFI base station uses the outdoor wireless WIFI base station of fan anteena, 6 cover user terminals.2 cover WIFI base station interval 1.5Km place, and ICBM SHF satellite terminal is connected by netting twine with WIFI base station 1, and WIFI base station 2 is connected by wireless link with WIFI base station 1.
Gateway station, comprise operation exchange routing subsystem, business data processing subsystem, network synthesis ADMINISTRATION SUBSYSTEM and antenna rf subsystem, the route of switching and routing subsystem responsible business datum and forwarding capability and the interface of system and ground network is provided, namely switching and routing subsystem receives the Internet network user data on ground, through route, data after exchange form baseband signal and comprise comprehensive network management data and business datum, this comprehensive network management data is delivered to network synthesis ADMINISTRATION SUBSYSTEM, business data processing subsystem is given by the business datum in baseband signal, switching and routing subsystem receives the data of business data processing subsystem, through exchanging, Internet network and network synthesis ADMINISTRATION SUBSYSTEM is given after route,
Network synthesis ADMINISTRATION SUBSYSTEM receives the comprehensive network management data that operation exchange routing subsystem is sent here, analyze according to this comprehensive network management data, to commence business user authentication and accounting management, and distribute priority and Resourse Distribute for different business user, real time monitoring is carried out to the running status of the WIFI application system based on satellite communication simultaneously; Network synthesis ADMINISTRATION SUBSYSTEM by occur in user authentication, User Priority, Resourse Distribute and gateway station fault, these information feed back of abnormal alarm are to switching and routing subsystem;
Business data processing subsystem, comprise forward link subsystem and return link subsystem, forward link subsystem, for the business datum in the baseband signal that receives operation exchange routing subsystem and send here, becomes intermediate-freuqncy signal after encoded, framing, modulation and delivers to less radio-frequency subsystem; The intermediate-freuqncy signal that return link subsystem is sent here for receiving less radio-frequency subsystem, forms baseband signal after carrying out demodulation, solution frame, decoding and gives operation exchange routing subsystem, carry out business datum switching and routing to this intermediate-freuqncy signal;
Antenna rf subsystem is transmitted into satellite repeater the data of intermediate-freuqncy signal after up-conversion, power amplification that business data processing subsystem is sent here; Antenna rf subsystem receives satellite repeater radiofrequency signal, low noise amplification and down-conversion are carried out to this radiofrequency signal after become radiofrequency signal and give business data processing subsystem;
ICBM SHF satellite terminal, comprise the first antenna, the first outdoor unit and the second indoor unit, be responsible for the transmission-receiving function of satellite user link data and the data-interface with WIFI base station is provided, first antenna will receive the radiofrequency signal of satellite repeater, give outdoor unit, the emission of radio frequency signals simultaneously sent here by outdoor unit is to satellite repeater; Outdoor unit is responsible for the intermediate-freuqncy signal from indoor unit to be sent to the first antenna through up-conversion, power amplification, radiofrequency signal from first day line is formed intermediate-freuqncy signal after low noise amplification, down-conversion simultaneously and be sent to indoor unit, complete the conversion of data between radio frequency and intermediate frequency; Indoor unit is responsible for the data from WIFI base station to be sent to outdoor unit after coding, modulation, gives WIFI base station by the signal from outdoor unit after demodulation, decode procedure simultaneously;
WIFI base station, comprises the second antenna, the second outdoor unit and the second indoor unit, and WIFI base station receives user terminal data by the second antenna, and give outdoor unit, the emission of radio frequency signals simultaneously sent here by outdoor unit is to user terminal; Outdoor unit is responsible for the intermediate-freuqncy signal from indoor unit to be sent to the second antenna through up-conversion, power amplification, radiofrequency signal from the second antenna is formed intermediate-freuqncy signal after low noise amplification, down-conversion simultaneously and be sent to indoor unit, complete the conversion of data between radio frequency and intermediate frequency; Indoor unit is responsible for the data from ICBM SHF satellite terminal to be sent to outdoor unit after coding, modulation, gives ICBM SHF satellite terminal by the signal from outdoor unit after demodulation, decode procedure simultaneously;
Communication satellite coverage, receives the data of ICBM SHF satellite terminal, after low noise amplification, He Lu, frequency conversion, power amplification, gives gateway station; Receive the data sent here of gateway station through low noise amplification, frequency conversion, along separate routes, send to ICBM SHF satellite terminal after power amplification.
System broad access service flow process is as follows:
Gateway station is by ground network interface access band business datum, ICBM SHF satellite terminal initiates business of networking application by satellite user link back channel, gateway station network synthesis administration module is submitted in this business application, network synthesis administration module completes and confirms the authentication of ICBM SHF satellite terminal information, and the response of this application is provided according to current network resources state, reply and get back to by satellite feed link forward channel the ICBM SHF satellite terminal initiating application.After ICBM SHF satellite terminal connecting system, offered wireless internet services for user terminal 1, user terminal 2 and user terminal 3 by WIFI base station 1, after WIFI base station 2 is connected with WIFI base station 1 by wireless link, for user terminal 4, user terminal 5 and user terminal 6 offer wireless internet services.Meanwhile, gateway station network synthesis administration module starts to carry out charging to user service data flow, and carries out monitoring, alarming to grid running status.
The content be not described in detail in specification of the present invention belongs to the known technology of those skilled in the art.
Claims (1)
1. based on a WIFI application system for satellite communication, it is characterized in that: comprise gateway station, communication satellite coverage, ICBM SHF satellite terminal and WIFI base station;
Gateway station, comprise operation exchange routing subsystem, business data processing subsystem, network synthesis ADMINISTRATION SUBSYSTEM and antenna rf subsystem, the route of switching and routing subsystem responsible business datum and forwarding capability and the interface of system and ground network is provided, namely switching and routing subsystem receives the Internet network user data on ground, through route, data after exchange form baseband signal and comprise comprehensive network management data and business datum, this comprehensive network management data is delivered to network synthesis ADMINISTRATION SUBSYSTEM, business data processing subsystem is given by the business datum in baseband signal, switching and routing subsystem receives the data of business data processing subsystem, through exchanging, Internet network and network synthesis ADMINISTRATION SUBSYSTEM is given after route,
Network synthesis ADMINISTRATION SUBSYSTEM receives the comprehensive network management data that operation exchange routing subsystem is sent here, analyze according to this comprehensive network management data, to commence business user authentication and accounting management, and distribute priority and Resourse Distribute for different business user, real time monitoring is carried out to the running status of the WIFI application system based on satellite communication simultaneously; Network synthesis ADMINISTRATION SUBSYSTEM by occur in user authentication, User Priority, Resourse Distribute and gateway station fault, these information feed back of abnormal alarm are to switching and routing subsystem;
Business data processing subsystem, comprise forward link subsystem and return link subsystem, forward link subsystem, for the business datum in the baseband signal that receives operation exchange routing subsystem and send here, becomes intermediate-freuqncy signal after encoded, framing, modulation and delivers to less radio-frequency subsystem; The intermediate-freuqncy signal that return link subsystem is sent here for receiving less radio-frequency subsystem, forms baseband signal after carrying out demodulation, solution frame, decoding and gives operation exchange routing subsystem, carry out business datum switching and routing to this intermediate-freuqncy signal;
Antenna rf subsystem is transmitted into satellite repeater the data of intermediate-freuqncy signal after up-conversion, power amplification that business data processing subsystem is sent here; Antenna rf subsystem receives satellite repeater radiofrequency signal, low noise amplification and down-conversion are carried out to this radiofrequency signal after become radiofrequency signal and give business data processing subsystem;
ICBM SHF satellite terminal, comprise the first antenna, the first outdoor unit and the second indoor unit, be responsible for the transmission-receiving function of satellite user link data and the data-interface with WIFI base station is provided, first antenna will receive the radiofrequency signal of satellite repeater, give outdoor unit, the emission of radio frequency signals simultaneously sent here by outdoor unit is to satellite repeater; Outdoor unit is responsible for the intermediate-freuqncy signal from indoor unit to be sent to the first antenna through up-conversion, power amplification, radiofrequency signal from first day line is formed intermediate-freuqncy signal after low noise amplification, down-conversion simultaneously and be sent to indoor unit, complete the conversion of data between radio frequency and intermediate frequency; Indoor unit is responsible for the data from WIFI base station to be sent to outdoor unit after coding, modulation, gives WIFI base station by the signal from outdoor unit after demodulation, decode procedure simultaneously;
WIFI base station, comprises the second antenna, the second outdoor unit and the second indoor unit, and WIFI base station receives user terminal data by the second antenna, and give outdoor unit, the emission of radio frequency signals simultaneously sent here by outdoor unit is to user terminal; Outdoor unit is responsible for the intermediate-freuqncy signal from indoor unit to be sent to the second antenna through up-conversion, power amplification, radiofrequency signal from the second antenna is formed intermediate-freuqncy signal after low noise amplification, down-conversion simultaneously and be sent to indoor unit, complete the conversion of data between radio frequency and intermediate frequency; Indoor unit is responsible for the data from ICBM SHF satellite terminal to be sent to outdoor unit after coding, modulation, gives ICBM SHF satellite terminal by the signal from outdoor unit after demodulation, decode procedure simultaneously;
Communication satellite coverage, receives the data of ICBM SHF satellite terminal, after low noise amplification, He Lu, frequency conversion, power amplification, gives gateway station; Receive the data sent here of gateway station through low noise amplification, frequency conversion, along separate routes, send to ICBM SHF satellite terminal after power amplification.
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