CN102420648A - Wireless comprehensive transmission method and railway wireless comprehensive relay equipment - Google Patents
Wireless comprehensive transmission method and railway wireless comprehensive relay equipment Download PDFInfo
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- CN102420648A CN102420648A CN2011104427182A CN201110442718A CN102420648A CN 102420648 A CN102420648 A CN 102420648A CN 2011104427182 A CN2011104427182 A CN 2011104427182A CN 201110442718 A CN201110442718 A CN 201110442718A CN 102420648 A CN102420648 A CN 102420648A
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Abstract
The invention discloses a wireless comprehensive transmission method which is implemented by using railway wireless comprehensive relay equipment. The railway wireless comprehensive relay equipment consists of a power supply, a microprocessor, an antenna feeder system, an optical transmission system, a private network wireless transmitting and receiving module, a public network wireless transmitting and receiving module, a combiner, a power divider, a private network receiving frequency converter, a private network transmitting frequency converter, a private network receiving signal digital coder, a private network transmitting signal digital coder, a multiplexer and a de-multiplexer. The railway wireless comprehensive relay equipment can provide wireless communication relay transmission service for base stations and users of a public network wireless communication system and the users of a private network wireless communication system at any position in a coverage interval of repeaters. The invention has the characteristics of low interference and application to various kinds of networking requirements of a public network and a private network.
Description
Technical field
The present invention is a railway radio communication relay transmission technology, is applicable to the relay transmission of the wireless communication system of railway section, belongs to wireless communication technology field.
Background technology
In present railway track; Have public network wireless communication system and private network wireless communication system, so-called public network wireless communication system promptly refers to wireless communication systems such as GSM, CDAM, WCDMA, TD-SCDAM, CDMA2000, so-called private network wireless communication system; Promptly refer to conventional scheduling wireless communications system, single worker's intercommunication wireless communication system etc.; In existing technology, above-mentioned wireless communication system all there is special-purpose separately trunking, but because specific factors such as the position in mountain railway and tunnel, track clearances; In these areas; Can not all trunkings all be installed on the relaying demand of wherein removing to satisfy each wireless communication system, particularly because the network planning of each wireless communication system is inconsistent, base station separately, transmission route and user distribution are inconsistent; Wireless signal access point separately is inconsistent, and therefore existing trunking can not be applicable in such area the trunking traffic requirement of each system user.
Summary of the invention
In view of the foregoing; The object of the present invention is to provide a kind of wireless composite transmission method and railway wireless composite trunking; Make this railway wireless composite trunking can base station and user for the public network wireless communication system that is in the optional position in railway section and the tunnel between, between the user of private network wireless communication system the service of radio communication relay transmission is provided; And need to reduce as far as possible with disturbing frequently, be applicable to the characteristics of multiple public network and dedicated network construction demand condition.
For achieving the above object; The present invention introduces a kind of wireless composite relay transmission method; Include the method for work that private network radio receiving transmitting module, public network radio receiving transmitting module, signal transmission logic controller and optical transmission system in railway wireless composite transmission equipment, the described railway wireless composite transmission equipment are realized, it is characterized in that selecting to adopt following relay transmission method:
(1) the private network wireless receiving CF signal that railway wireless composite trunking is received through the private network radio receiving transmitting module carries out frequency-conversion processing and obtains the private network frequency variation signal; The pairing carrier frequency strength signal of private network wireless receiving CF signal that receives is carried out obtaining after the digitized processing corresponding reception carrier frequency intensity sign indicating number, this reception carrier frequency intensity sign indicating number is sent to a plurality of other railway wireless composite trunkings through optical transmission system; When signal transmission logic controller is permitted; This private network frequency variation signal is carried out obtaining private network frequency conversion radiofrequency signal after the radio frequency frequency conversion; This private network frequency conversion radiofrequency signal is carried out wireless transmit through this railway wireless composite trunking; And this private network frequency variation signal carried out obtaining private network frequency conversion digital signal after the digitized processing; The carrier frequency strength signal of the private network wireless receiving CF signal that above-mentioned reception carrier frequency intensity sign indicating number is characterized private network frequency conversion digital signal institute therewith is corresponding, the transmission method that this private network frequency conversion digital signal is sent to a plurality of other railway wireless composite trunkings through optical transmission system;
(2) the private network frequency conversion digital signal that will send through other railway wireless composite trunkings that optical transmission system is received of railway wireless composite trunking is sent to other other railway wireless composite trunkings through optical transmission system; And this private network frequency conversion digital signal recovered to handle; Obtain original private network frequency variation signal; When signal transmission logic controller is permitted; This private network frequency variation signal is carried out obtaining private network frequency conversion radiofrequency signal after the radio frequency frequency conversion, this private network frequency conversion radiofrequency signal is carried out the transmission method of wireless transmit through railway wireless composite trunking;
(3) the private network wireless receiving CF signal that railway wireless composite trunking is received through the private network radio receiving transmitting module is handled and is obtained time of reception that corresponding reception carrier frequency intensity sign indicating number and private network frequency conversion digital signal that receives through optical transmission system and pairing reception carrier frequency intensity sign indicating number thereof characterized and corresponding value and compare and judge; According to the operating state that relatively reaches result of determination control signal transmission logic controller, the method for transmission processing of private network wireless receiving CF signal of selecting in above-mentioned (1) or (2) railway wireless composite trunking is received through the private network radio receiving transmitting module and the private network frequency conversion digital signal received through optical transmission system;
(4) railway wireless composite trunking will transmit to other railway wireless composite trunkings of the different transmission directions in both sides respectively through optical transmission system through the public network CF signal that the public network radio receiving transmitting module receives; After the public network CF signal that other railway wireless composite trunkings of the both sides that will receive through optical transmission system send merges this is closed the transmission method that the road CF signal is launched through the public network radio receiving transmitting module;
(5) railway wireless composite trunking will merge the back through the public network CF signal that public network radio receiving transmitting module public network CF signal that receives and other railway wireless composite trunking that receives through optical transmission system send and send to another other railway wireless composite trunking through optical transmission system; The public network CF signal that will send through other railway wireless composite trunking that optical transmission system receives carries out wireless transmit through the public network radio receiving transmitting module, and the transmission method that this CF signal is sent to another railway wireless composite trunking through optical transmission system;
(6) described optical transmission system adopts multiplexed transmission method to the signal transmission of railway wireless composite trunking.
For realizing above-mentioned wireless composite transmission method; The present invention also introduces a kind of railway wireless composite trunking; Including optical transmission system, power supply, microprocessing systems, antenna feeding system, private network radio receiving transmitting module, public network radio receiving transmitting module constitutes; Said optical transmission system is meant by optical fiber, optical branching device, photoelectricity transmission transducer and photoelectricity receiving converter and constitutes; It is characterized in that having private network to receive frequency converter, private network receives in frequency variation signal power splitter, private network receiving signal digital encoder, receiving digital signals power splitter, two digital data transmission power splitters, public network tributary station power splitter, public network intermediate station power splitter, private network emission frequency converter, private network emission frequency variation signal mixer, private network emission digital signal decoder, emission digital signal mixer, two digital data transmission mixers, public network tributary station mixer, public network intermediate station mixer, two signal transmission logic controllers, the described optical transmission system two multiplexers, two demultiplexing devices is arranged; The reception carrier frequency output of private network radio receiving transmitting module receives the frequency converter input with private network and is connected; The frequency conversion output that private network receives frequency converter is connected with the input of a signal transmission logic controller; The output of this signal transmission logic controller is connected with the input that private network receives the frequency variation signal power splitter; Private network receives the merit of frequency variation signal power splitter and divides output to be connected with an input of private network emission frequency variation signal mixer, the input of the receiving digitally encoded device of private network respectively; The receiving digitally encoded digital coding output of private network is connected with the input of receiving digital signals power splitter; The merit of receiving digital signals power splitter divides an input of different with two the respectively digital data transmission mixer of output to be connected; The output of two digital data transmission mixers respectively two be connected with an input of different multiplexer; The output of two demultiplexing devices is connected with the input of different two digital data transmission power splitters respectively; Two digital data transmission power splitters merit separately divides an input of different with two the respectively digital data transmission mixer of output to be connected; Two digital data transmission power splitters another merit separately divides output to be connected with the different input of emission digital signal mixer respectively; The output of emission digital signal mixer is connected with the digital input end of private network emission digital decoder; The decoding output of private network emission digital decoder and the input of another signal transmission logic controller be connected; The output of this signal transmission logic controller is connected with another input of private network emission frequency variation signal mixer; The output of private network emission frequency variation signal mixer is connected with the input of private network emission frequency converter, and the output of private network emission frequency converter is connected with the emission input of private network radio receiving transmitting module; The CF signal output of a public network radio receiving transmitting module is connected with the input of public network intermediate station power splitter; The merit of public network intermediate station power splitter divide output respectively with the optical transmission system of two different transmission directions in a multiplexer electric signal input end separately be connected; The output of the CF signal input public network intermediate station mixer of this public network radio receiving transmitting module is connected, the input of public network intermediate station mixer respectively with the optical transmission system of the different transmission directions in both sides in an electrical signal of demultiplexing device be connected; The CF signal output of another public network radio receiving transmitting module is connected with an input of public network tributary station mixer; An electrical signal of the optical transmission demultiplexing device in another input of public network tributary station mixer and the transmission direction is connected; An electric signal input end of the optical transmission multiplexer in the output of public network tributary station mixer and another transmission direction is connected; An electrical signal of the demultiplexing device in the optical transmission system is connected with the input of public network tributary station power splitter, the merit of public network tributary station power splitter divide output respectively with the CF signal input of public network radio receiving transmitting module, optical transmission system in another transmission direction in an electric signal input end of multiplexer be connected; One group of reception carrier frequency strength signal output, multiplexer and the demultiplexing device of the operating state of the operating state of signal transmission logic controller and control input/output terminal, private network radio receiving transmitting module and control input/output terminal, private network radio receiving transmitting module transmits and controls input/output terminal and is connected with the work control input/output terminal of microprocessing systems respectively.
Operation principle of the present invention is: according to the set situation of repeater, and the working form of the radio receiving transmitting module that selection is corresponding and working frequency range, frequency; In railway wireless composite trunking; Be provided with the private network radio receiving transmitting module; When this wireless receiving module is received the CF signal of private network communication system; It is transformed to another transmitting carrier frequency signal launches, and frequency variation signal is carried out transmitting to other railway wireless composite trunkings of different directions through optical transmission system behind the digital coding through the wireless transmitter module of this repeater; Railway wireless composite trunking will receive that the private network frequency conversion digital signal of being sent by optical transmission system is forwarded to other railway wireless composite trunking; And with this private network frequency conversion digital signal decode, frequency conversion and emission; The purpose of the transmitting carrier frequency signal being carried out frequency conversion is for fear of feedbacking self-excitation; Digitized purpose is the transmission of being convenient to optical transmission system, and the radio frequency frequency conversion here is for whether the conditions of demand setting according to the private network wireless communication system gives frequency conversion; That is: frequency conversion can be given, also frequency conversion can be do not given; To closing on the near-end railway wireless composite trunking of public network base station; Corresponding public network base station carrier transceiver module is arranged in the radio receiving transmitting module that is provided with; During the CF signal of the public network base station that receives when this wireless receiving module; Transmit along separate routes through power splitter; And it receive is transmitted through the far-end railway wireless composite trunking of optical transmission system on other directions, supply to receive, when this near-end railway wireless composite trunking receives far-end railway wireless composite trunking on other both directions when transmitting the CF signal that the public network user that comes sends through optical transmission system adjacent to the public network user of far-end railway wireless composite trunking; Through mixer it is merged; Launch through wireless transmitter module again, supply base stations neighboring to receive, corresponding to the far-end railway wireless composite trunking of this public network wireless communication system; Be provided with corresponding public network mobile subscriber transceiver module is arranged in its radio receiving transmitting module; During the CF signal of the public network mobile subscriber emission that receives when this wireless receiving module, through mixer, the public network CF signal that this CF signal and another far-end railway wireless composite trunking of receiving through optical transmission system are sent merges; Through optical transmission system this is closed the road CF signal then and send to public network base station near-end railway wireless composite trunking and send, receive by adjacent public network base station; Like this, just accomplish the base station of public network wireless communication system and the two-way communication relay transmission between the mobile subscriber, also realized the two-way communication relay transmission of private network wireless communication user.
Description of drawings
Fig. 1 is the railway wireless composite trunking integral module allocation plan in the railway wireless composite trunking of one embodiment of the invention.
Fig. 2 is the private network electrical schematic diagram in the railway wireless composite trunking of one embodiment of the invention.
Fig. 3 is the public network intermediate station electrical schematic diagram in the railway wireless composite trunking of one embodiment of the invention.
Fig. 4 is the public network tributary station electrical schematic diagram in the railway wireless composite trunking of one embodiment of the invention.
Fig. 5 is the signal transmission logic controller electrical schematic diagram in the railway wireless composite trunking of one embodiment of the invention.
Embodiment
Below be example explanation embodiments of the invention with the accompanying drawing.
Pairing device of identical numbering among Fig. 1 to Fig. 4 and module title and function are identical, but working form separately, frequency range and frequency have can be different.
Fig. 1 is the integral module allocation plan of the railway wireless composite trunking of one embodiment of the invention, wherein:
1 is the private network radio receiving transmitting module, adopts corresponding private network wireless communication system working form, frequency range, and the wireless receiving module of frequency, receives and emission private network radio carrier frequency signal; 2,3 penetrate module, adopt corresponding public network wireless communication system working form, frequency range, and the radio receiving transmitting module of frequency, receive respectively and launch wireless public network upstream or downstream CF signal for the public network wireless receiving and dispatching; Radio receiving transmitting module is connected with composition antenna feeding systems such as conventional antenna, radio frequency feed line, power splitter and duplexers; 4,5 is multiplexer in the optical transmission system, and 6,7 is the demultiplexing device in the optical transmission system, and 4,6 is multiplexer and the demultiplexing device in the optical transmission receive-transmit system in the same transmission direction; 5,7 is multiplexer and demultiplexing device in the optical transmission receive-transmit system in the same transmission direction; 8 are private network reception frequency variation signal power splitter; 9 is private network receiving digital signals power splitter; 10,11 is the digital data transmission power splitter; 12 is public network intermediate station power splitter; , 13 be public network tributary station power splitter; Wherein 8,9,10,11,12,13 adopt the one-to-two power splitter; 14 launch frequency variation signal mixer, 15 for private network is emission digital signal mixer; 16,17 is the digital data transmission mixer; , 18 be that public network intermediate station mixer, 19 is for public network tributary station mixer; Wherein 14,15,16,17,18,19 adopt two-in-one mixer; 20 for private network receives frequency converter, adopts conventional frequency-variable module or demodulator to constitute; 21 for private network emission frequency converter, adopts conventional frequency converter or modulator to constitute; 20,21 realize that the CF signal with input is transformed to another CF signal of setting, and frequency conversion is set or refuses frequency conversion according to the networking situation; 22 is private network receiving signal digital encoder, adopts conventional simulation-digital signal encoding device, realizes the function that analog signal digital is handled; 23 for private network emission digital signal decoder, adopts conventional digital-analog signal decoder, realizes digitized signal is decoded into the function of original analog; 24,25 is signal transmission logic controller, adopts electronic switch to constitute, and is controlled by microprocessor;
According to the residing situation of railway wireless composite trunking, select different radio receiving transmitting modules, and its device and module selected to adopt following connection transmission method:
Fig. 2 is the private network electrical schematic diagram of the railway wireless composite trunking of one embodiment of the invention, and wherein module title shown in each label and function are with consistent shown in the accompanying drawing 1, wherein:
The reception CF signal output of private network radio receiving transmitting module 1 is connected with the signal input part that a private network receives frequency converter 20; The signal output part that this private network receives frequency converter 20 is connected with the input of a signal transmission logic controller 24; The output of this signal transmission logic controller 24 is connected with the input that private network receives frequency variation signal power splitter 8; Private network receives the merit of frequency variation signal power splitter 8 and divides output to be connected with an input of private network emission frequency variation signal mixer 14, the input of private network receiving signal digital encoder 22 respectively; The output of private network receiving signal digital encoder 22 is connected with the input of private network receiving digital signals power splitter 9; The merit of private network receiving digital signals power splitter 9 divides output to be connected with an input of digital data transmission mixer 16,17 respectively; The output of digital data transmission mixer 16,17 respectively with optical transmission system in an input of two different multiplexers 6,7 be connected; An output of two the demultiplexing devices 4,5 in the optical transmission system is connected with the input of different two digital data transmission power splitters 10,11 respectively; Two digital data transmission power splitters 10,11 merit separately divides an input of different with two the respectively digital data transmission mixer 16,17 of output to be connected; Two digital data transmission power splitters 10,11 another merit separately divides output to be connected with the different input of emission digital signal mixer 15 respectively; The output of emission digital signal mixer 15 is connected with the digital signal input end of private network emission digital decoder 23; The decoding output of private network emission digital decoder 23 and the input of another signal transmission logic controller 25 be connected; The output of this signal transmission logic controller 25 is connected with another input of private network emission frequency variation signal mixer 14; The output of private network emission frequency variation signal mixer 14 is connected with the input of private network emission frequency converter 21, and the output of private network emission frequency converter 21 is connected with the emission input of private network radio receiving transmitting module 1; One group of reception carrier frequency strength signal output, multiplexer and the demultiplexing device of the operating state of the operating state of signal transmission logic controller and control input/output terminal, private network radio receiving transmitting module and control input/output terminal, private network radio receiving transmitting module transmits and controls input/output terminal and is connected with the work control input/output terminal of microprocessing systems respectively.
Fig. 3 is the public network electrical schematic diagram of the railway wireless composite trunking of one embodiment of the invention, and connecting and composing of this electrical schematic diagram is applied to the public network intermediate station, and wherein module title shown in each label and function are with consistent shown in the accompanying drawing 1, wherein:
The CF signal output of public network radio receiving transmitting module 2 is connected with the input of public network intermediate station power splitter 12; The merit of public network intermediate station power splitter 12 divide output respectively with the optical transmission system of two different transmission directions in multiplexer 6,7 electric signal input end separately be connected; The CF signal input of public network radio receiving transmitting module 2 is connected with the output of public network intermediate station mixer 18, the input of public network intermediate station mixer 18 respectively with the optical transmission system of the different transmission directions in both sides in an electrical signal of demultiplexing device 4,5 be connected.
Fig. 4 is the electrical schematic diagram of the railway wireless composite trunking of one embodiment of the invention, originally connects and composes and is applied to the public network tributary station, and wherein module title shown in each label and function are with consistent shown in the accompanying drawing 1, wherein:
The CF signal output of public network radio receiving transmitting module 3 is connected with an input of public network tributary station mixer 19; An electrical signal of the demultiplexing device 4 in the optical transmission system in another input of public network tributary station mixer 19 and the transmission direction is connected; An electric signal input end of the multiplexer 7 in the optical transmission system in the output of public network tributary station mixer 19 and another transmission direction is connected; An electrical signal of the demultiplexing device 5 in the optical transmission system in transmission direction is connected with the input of public network tributary station power splitter 13, the merit of public network tributary station power splitter 13 divide output respectively with the CF signal input of public network radio receiving transmitting module 3, optical transmission system in another transmission direction in an electric signal input end of multiplexer 6 be connected.
Reach and write control program and running parameter is set according to above-mentioned each functional module of explanation configuration, components and parts, join dependency device blocks, can accomplish enforcement of the present invention for microprocessor.
Wireless composite relay transmission method of the present invention; Can also be to include operating state data collector, long distance control system; It is characterized in that adopting the private network wireless receiving CF signal that railway wireless composite trunking is received to carry out frequency-conversion processing and obtain the private network frequency variation signal; This private network frequency variation signal is carried out obtaining private network frequency conversion digital signal after the digitized processing, this private network frequency conversion digital signal is sent to a plurality of other railway wireless composite trunkings through optical transmission system; Railway wireless composite trunking will recover to handle through the private network frequency conversion digital signal that optical transmission system receives; Obtain original private network frequency variation signal; Should carry out obtaining private network frequency conversion radiofrequency signal after the radio frequency frequency conversion by original private network frequency variation signal, this private network frequency conversion radiofrequency signal is carried out wireless transmit through railway wireless composite trunking; The working status parameter of each module in the railway wireless composite trunking is gathered and send to long distance control system through the operating state data collector through light transmission transmitter; Instruction processing unit passes through the operational order and the running parameter of light transmission receiver receiving remote supervisory control system, and each functional module level device in the railway wireless composite trunking is carried out the method for work of running parameter setting and operating state control; Like this can be so that the present invention has the function of remote monitoring, conveniently to remote maintenance management of the present invention.
Wireless composite relay transmission method of the present invention; It can also be wherein optical transmission system adopts digital multiplex to private network frequency conversion digital signal transmission method; Transmission method to public network CF signal employing wavelength division multiplexing can be convenient to enforcement of the present invention like this.
Railway wireless composite trunking of the present invention; Can also be that one fen three power splitter, a three-in-one mixer are arranged; The frequency conversion output that private network receives frequency converter is connected with the input of the receiving digitally encoded device of private network; The digital coding output of the receiving digitally encoded device of private network is connected with the input of one minute three power splitter; The merit of one minute three power splitter divides output to be connected with an input of three-in-one mixer, two digital data transmission mixers input separately respectively; Two digital data transmission power splitters merit separately divides output to be connected with two other input of three-in-one mixer respectively; The road output that closes of three-in-one mixer is connected with the digital signal input end of private network emission digital decoder, and the digital decoding signal output part of private network emission digital decoder is connected with the input of private network emission frequency converter; Like this can be so that implement more convenient succinct for the relay transmission of private network wireless system.
The present invention can also be private network radio receiving transmitting module and the public network radio receiving transmitting module that a plurality of different operating standards, frequency range and frequency are arranged in railway wireless composite trunking; Its working form can be GSM, CDMA, TD-SCDMA, WCDMA, CDMA2000, spread spectrum microwave, trunking communication and analog fm standard etc.; According to the radio receiving transmitting module quantity that is provided with; Be provided with a plurality of signal transmission logic controllers, a plurality of private network and receive frequency variation signal power splitter, a plurality of receiving digital signals power splitter, two digital data transmission power splitters, a plurality of public network tributary station power splitter, a plurality of public network intermediate station power splitter, a plurality of private networks emission frequency variation signal mixer, a plurality of emission digital signal mixer, a plurality of digital data transmission mixer, a plurality of public network tributary station mixer, a plurality of public network intermediate station mixer; A plurality of private networks receive frequency converter; A plurality of private network emission frequency converters; The receiving digitally encoded device of a plurality of private networks, a plurality of private networks emission digital decoders, a plurality of one minute three power splitter, a plurality of three-in-one mixer; Each module and device are according to annexation shown in accompanying drawing 2, accompanying drawing 3 and the accompanying drawing 4 and the above-mentioned complete connection of annexation about one minute three power splitter, three-in-one mixer; Can relay transmission be provided simultaneously for the wireless communication system of a plurality of different systems and working frequency range like this, improve range of application of the present invention.
The present invention can also be that wireless receiving module and the wireless transmitter module in railway wireless composite trunking is the broadband operation module; It is the broadband operation module that photoelectricity receiving converter in light transmission receiver and the light transmission transmitter and photoelectricity send transducer; All be provided with the band pass filter of corresponding each working frequency range and working frequency points at the carrier frequency signal of telecommunication input/output terminal of each module; Can relay transmission be provided for more wireless communication system like this; And can reduce cost, convenient enforcement.
The present invention can also be that the signal transmission logic controller in railway wireless composite trunking constitutes shown in accompanying drawing 5; Fig. 5 is the signal transmission logic controller electrical schematic diagram in the railway wireless composite trunking of one embodiment of the invention; A band pass filter (d), an adjustable time delay (e) are respectively arranged in the described signal transmission logic controller 24 or 25; An electronic switch (f); An A/D converter (c); It is AC/DC changeover switch; Realization is the function of direct current signal with the conversion of signals of input; Wherein (a) is the switch working state signal input end of electronic switch (f), and the direct current signal output (b) of the A/D converter (c) in the switch working state signal input end (a) of this electronic switch and another signal transmission logic controller is connected, and the output of band pass filter (d) is connected with the input of adjustable time delay (e); The output of adjustable time delay (e) is failed with the signal input of electronic switch (f) and is connected; The output of the signal of electronic switch (f) is defeated to be connected with the ac input end of A/D converter (c), and the switch controlling signal input (a) of the electronic switch in the direct current signal output (b) of the A/D converter in each signal transmission logic controller and another signal transmission logic controller is connected, and electronic switch is static closed operating state; Signal transmission logic controller carry out to wireless receiving CF signal frequency conversion output frequency conversion frequently signal and optical transmission system receive that output obtains frequency variation signal in only select a frequency variation signal can output to corresponding power splitter to carry out optical transmission and send; And be input to the private network private network and receive frequency converter to carry out frequency conversion be the transmission method of launching behind the CF signal; Can reduce the interference that the present invention in use produces so that the multipath of in the area of coverage that interweaves of a plurality of railway wireless composite trunkings, avoiding a plurality of transfering the letters path to bring disturbs like this.
The present invention can also be that the electronic switch in the signal transmission logic controller in railway wireless composite trunking has more than two; Its quantity is corresponding with the quantity that input is introduced in the private network radio communication CF signal reception in this railway wireless composite trunking; As: what this accompanying drawing 2 was considered is the input of both direction; I.e. one tunnel radio carrier frequency reception conversion of signals is the private network frequency variation signal, and another road is that the optical transmission reception is closed the road and is reduced to original private network frequency variation signal, then respectively is provided with a series connection electronic switch; As far as same CF signal; The input source of every increase by one road this private network frequency variation signal then increases a signal transmission logic controller, and in each signal transmission logic controller, increases a series connection electronic switch; Can make that application of the present invention is more flexible so that the present invention can be used to have the networking of a pair of multiple spot to use like this.
The present invention has an operating state data collector, an instruction processing unit in railway wireless composite trunking; The signal input output end of operating state data collector and instruction processing unit respectively with railway wireless composite trunking in microprocessing systems, private network radio receiving transmitting module, public network radio receiving transmitting module, private network receive the multiplexer in frequency converter, private network receiving signal digital encoder, private network emission frequency converter, private network emission digital signal decoder, signal transmission logic controller, the optical transmission system, the signal of telecommunication input/output terminal of demultiplexing device is connected respectively; This operating state data collector is gathered the working status parameter of each module and is sent to long distance control system through optical transmission system; Instruction processing unit is through the operational order and the running parameter of optical transmission system receiving remote supervisory control system; And through optical transmission system transmission setting and State Control parameter code; Each functional module level device in the railway wireless composite trunking is carried out running parameter setting and operating state control; Like this can be so that the present invention has the function of remote monitoring, conveniently to remote maintenance management of the present invention.
The present invention has introduced the wireless composite transmission method that a kind of railway wireless composite trunking that is made up of power supply, microprocessor, antenna feeding system, optical transmission system, power supply, microprocessing systems, antenna feeding system, private network radio receiving transmitting module, public network radio receiving transmitting module, mixer, power splitter, private network reception frequency converter, private network emission frequency converter, private network receiving signal digital encoder, private network emission digital signal decoder, multiplexer, demultiplexing device is realized; Make this railway wireless composite trunking can base station and user for the public network wireless communication system of the optional position in being between the repeater area of coverage between, between the user of private network wireless communication system the service of radio communication relay transmission is provided; And it is little to have interference, is applicable to the characteristics of multiple public network and dedicated network construction demand condition.
Claims (10)
1. wireless composite relay transmission method; Include the method for work that private network radio receiving transmitting module, public network radio receiving transmitting module, signal transmission logic controller and optical transmission system in railway wireless composite transmission equipment, the described railway wireless composite transmission equipment are realized, it is characterized in that selecting to adopt following relay transmission method:
(1) the private network wireless receiving CF signal that railway wireless composite trunking is received through the private network radio receiving transmitting module carries out frequency-conversion processing and obtains the private network frequency variation signal; The pairing carrier frequency strength signal of private network wireless receiving CF signal that receives is carried out obtaining after the digitized processing corresponding reception carrier frequency intensity sign indicating number, this reception carrier frequency intensity sign indicating number is sent to a plurality of other railway wireless composite trunkings through optical transmission system; When signal transmission logic controller is permitted; This private network frequency variation signal is carried out obtaining private network frequency conversion radiofrequency signal after the radio frequency frequency conversion; This private network frequency conversion radiofrequency signal is carried out wireless transmit through this railway wireless composite trunking; And this private network frequency variation signal carried out obtaining private network frequency conversion digital signal after the digitized processing; The carrier frequency strength signal of the private network wireless receiving CF signal that above-mentioned reception carrier frequency intensity sign indicating number is characterized private network frequency conversion digital signal institute therewith is corresponding, the transmission method that this private network frequency conversion digital signal is sent to a plurality of other railway wireless composite trunkings through optical transmission system;
(2) the private network frequency conversion digital signal that will send through other railway wireless composite trunkings that optical transmission system is received of railway wireless composite trunking is sent to other other railway wireless composite trunkings through optical transmission system; And this private network frequency conversion digital signal recovered to handle; Obtain original private network frequency variation signal; When signal transmission logic controller is permitted; This private network frequency variation signal is carried out obtaining private network frequency conversion radiofrequency signal after the radio frequency frequency conversion, this private network frequency conversion radiofrequency signal is carried out the transmission method of wireless transmit through railway wireless composite trunking;
(3) the private network wireless receiving CF signal that railway wireless composite trunking is received through the private network radio receiving transmitting module is handled and is obtained time of reception that corresponding reception carrier frequency intensity sign indicating number and private network frequency conversion digital signal that receives through optical transmission system and pairing reception carrier frequency intensity sign indicating number thereof characterized and corresponding value and compare and judge; According to the operating state that relatively reaches result of determination control signal transmission logic controller, the method for transmission processing of private network wireless receiving CF signal of selecting in above-mentioned (1) or (2) railway wireless composite trunking is received through the private network radio receiving transmitting module and the private network frequency conversion digital signal received through optical transmission system;
(4) railway wireless composite trunking will transmit to other railway wireless composite trunkings of the different transmission directions in both sides respectively through optical transmission system through the public network CF signal that the public network radio receiving transmitting module receives; After the public network CF signal that other railway wireless composite trunkings of the both sides that will receive through optical transmission system send merges this is closed the transmission method that the road CF signal is launched through the public network radio receiving transmitting module;
(5) railway wireless composite trunking will merge the back through the public network CF signal that public network radio receiving transmitting module public network CF signal that receives and other railway wireless composite trunking that receives through optical transmission system send and send to another other railway wireless composite trunking through optical transmission system; The public network CF signal that will send through other railway wireless composite trunking that optical transmission system receives carries out wireless transmit through the public network radio receiving transmitting module, and the transmission method that this CF signal is sent to another railway wireless composite trunking through optical transmission system;
(6) described optical transmission system adopts multiplexed transmission method to the signal transmission of railway wireless composite trunking.
2. wireless composite relay transmission method as claimed in claim 1; Include operating state data collector, instruction processing unit, long distance control system; It is characterized in that adopting the private network wireless receiving CF signal that railway wireless composite trunking is received to carry out frequency-conversion processing and obtain the private network frequency variation signal; This private network frequency variation signal is carried out obtaining private network frequency conversion digital signal after the digitized processing, this private network frequency conversion digital signal is sent to a plurality of other railway wireless composite trunkings through optical transmission system; Railway wireless composite trunking will recover to handle through the private network frequency conversion digital signal that optical transmission system receives; Obtain original private network frequency variation signal; Should carry out obtaining private network frequency conversion radiofrequency signal after the radio frequency frequency conversion by original private network frequency variation signal, this private network frequency conversion radiofrequency signal is carried out wireless transmit through railway wireless composite trunking; The working status parameter of each module in the railway wireless composite trunking is gathered and send to long distance control system through the operating state data collector through light transmission transmitter; Instruction processing unit passes through the operational order and the running parameter of light transmission receiver receiving remote supervisory control system, and each functional module level device in the railway wireless composite trunking is carried out the method for work of running parameter setting and operating state control.
3. according to claim 1 or claim 2 wireless composite relay transmission method is characterized in that optical transmission system wherein adopts the transmission method of digital multiplex to private network frequency conversion digital signal, adopts the transmission method of wavelength division multiplexing to the public network CF signal.
4. railway wireless composite trunking; Including optical transmission system, power supply, microprocessing systems, antenna feeding system, private network radio receiving transmitting module, public network radio receiving transmitting module constitutes; Said optical transmission system is meant by optical fiber, optical branching device, photoelectricity transmission transducer and photoelectricity receiving converter and constitutes; It is characterized in that having private network to receive frequency converter, private network receives in frequency variation signal power splitter, private network receiving signal digital encoder, receiving digital signals power splitter, two digital data transmission power splitters, public network tributary station power splitter, public network intermediate station power splitter, private network emission frequency converter, private network emission frequency variation signal mixer, private network emission digital signal decoder, emission digital signal mixer, two digital data transmission mixers, public network tributary station mixer, public network intermediate station mixer, two signal transmission logic controllers, the described optical transmission system two multiplexers, two demultiplexing devices is arranged; The reception carrier frequency output of private network radio receiving transmitting module receives the frequency converter input with private network and is connected; The frequency conversion output that private network receives frequency converter is connected with the input of a signal transmission logic controller; The output of this signal transmission logic controller is connected with the input that private network receives the frequency variation signal power splitter; Private network receives the merit of frequency variation signal power splitter and divides output to be connected with an input of private network emission frequency variation signal mixer, the input of the receiving digitally encoded device of private network respectively; The receiving digitally encoded digital coding output of private network is connected with the input of receiving digital signals power splitter; The merit of receiving digital signals power splitter divides an input of different with two the respectively digital data transmission mixer of output to be connected; The output of two digital data transmission mixers respectively with optical transmission system in an input of two different multiplexers be connected; The output of two demultiplexing devices in the optical transmission system is connected with the input of different two digital data transmission power splitters respectively; Two digital data transmission power splitters merit separately divides an input of different with two the respectively digital data transmission mixer of output to be connected; Two digital data transmission power splitters another merit separately divides output to be connected with the different input of emission digital signal mixer respectively; The output of emission digital signal mixer is connected with the digital input end of private network emission digital decoder; The decoding output of private network emission digital decoder and the input of another signal transmission logic controller be connected; The output of this signal transmission logic controller is connected with another input of private network emission frequency variation signal mixer; The output of private network emission frequency variation signal mixer is connected with the input of private network emission frequency converter, and the output of private network emission frequency converter is connected with the emission input of private network radio receiving transmitting module; The CF signal output of a public network radio receiving transmitting module is connected with the input of public network intermediate station power splitter; The merit of public network intermediate station power splitter divide output respectively with the optical transmission system of two different transmission directions in a multiplexer electric signal input end separately be connected; The output of the CF signal input public network intermediate station mixer of this public network radio receiving transmitting module is connected, the input of public network intermediate station mixer respectively with the optical transmission system of the different transmission directions in both sides in an electrical signal of demultiplexing device be connected; The CF signal output of another public network radio receiving transmitting module is connected with an input of public network tributary station mixer; An electrical signal of the demultiplexing device in the optical transmission system in another input of public network tributary station mixer and the transmission direction is connected; An electric signal input end of the multiplexer in the optical transmission system in the output of public network tributary station mixer and another transmission direction is connected; An electrical signal of the demultiplexing device in the optical transmission system is connected with the input of public network tributary station power splitter, the merit of public network tributary station power splitter divide output respectively with the CF signal input of public network radio receiving transmitting module, optical transmission system in another transmission direction in an electric signal input end of multiplexer be connected; One group of reception carrier frequency strength signal output, multiplexer and the demultiplexing device of the operating state of the operating state of signal transmission logic controller and control input/output terminal, private network radio receiving transmitting module and control input/output terminal, private network radio receiving transmitting module transmits and controls input/output terminal and is connected with the work control input/output terminal of microprocessing systems respectively.
5. railway wireless composite trunking as claimed in claim 4; It is characterized in that having one fen three power splitter, a three-in-one mixer; The frequency conversion output that private network receives frequency converter is connected with the input of the receiving digitally encoded device of private network; The digital coding output of the receiving digitally encoded device of private network is connected with the input of one minute three power splitter; The merit of one minute three power splitter divides output to be connected with an input of three-in-one mixer, two digital data transmission mixers input separately respectively; Two digital data transmission power splitters merit separately divides output to be connected with two other input of three-in-one mixer respectively; The road output that closes of three-in-one mixer is connected with the digital signal input end of private network emission digital decoder, and the digital decoding signal output part of private network emission digital decoder is connected with the input of private network emission frequency converter.
6. like claim 4 or 5 described railway wireless composite trunkings; It is characterized in that having in the wherein said railway wireless composite trunking private network radio receiving transmitting module and the public network radio receiving transmitting module of a plurality of different operating standards, frequency range and frequency; There are a plurality of signal transmission logic controllers, a plurality of private network reception frequency variation signal power splitter, a plurality of receiving digital signals power splitter, two digital data transmission power splitters, a plurality of public network tributary station power splitter, a plurality of public network intermediate station power splitter, a plurality of private networks to launch frequency variation signal mixer, a plurality of emission digital signal mixer, a plurality of digital data transmission mixer, a plurality of public network tributary station mixer, a plurality of public network intermediate station mixer; A plurality of private networks receive frequency converter; A plurality of private network emission frequency converters; The receiving digitally encoded device of a plurality of private networks, a plurality of private networks emission digital decoders, a plurality of one minute three power splitter, a plurality of three-in-one mixer.
7. like claim 4 or 5 described railway wireless composite trunkings; It is characterized in that wireless receiving module and wireless transmitter module in the wherein said railway wireless composite trunking are the broadband operation module; It is the broadband operation module that photoelectricity receiving converter in light transmission receiver and the light transmission transmitter and photoelectricity send transducer, all is provided with the band pass filter of corresponding each working frequency range and working frequency points at the carrier frequency signal of telecommunication input/output terminal of described each broadband operation module.
8. railway wireless composite trunking as claimed in claim 4; It is characterized in that a band pass filter is arranged in the described signal transmission logic controller, an adjustable time delay, an electronic switch, an A/D converter; The output of band pass filter is connected with the adjustable time delay input; The output of adjustable time delay is connected with the signal input part of electronic switch; The signal output part of the electronic switch in the ac input end of A/D converter and the series circuit is connected; The signal output part of electronic switch is as the frequency variation signal output of signal transmission logic controller, and the switch controlling signal input of the electronic switch in the direct current signal output of the A/D converter in each signal transmission logic controller and other signal transmission logic controllers is connected, and each electronic switch is static closed operating state.
9. railway wireless composite trunking as claimed in claim 7; It is characterized in that the electronic switch in the signal transmission logic controller in the wherein said railway wireless composite trunking has more than two; Its signal input output end annexation is a series system, and its quantity is corresponding with the quantity that the private network radio communication CF signal reception in this railway wireless composite trunking is imported.
10. railway wireless composite trunking as claimed in claim 4; It is characterized in that an operating state data collector, an instruction processing unit are arranged in the wherein said railway wireless composite trunking, the signal input output end of operating state data collector and instruction processing unit respectively with railway wireless composite trunking in microprocessing systems, private network radio receiving transmitting module, public network radio receiving transmitting module, private network receive the multiplexer in frequency converter, private network receiving signal digital encoder, private network emission frequency converter, private network emission digital signal decoder, signal transmission logic controller, the optical transmission system, the signal of telecommunication input/output terminal of demultiplexing device is connected respectively.
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| CN2011104427182A CN102420648A (en) | 2011-12-27 | 2011-12-27 | Wireless comprehensive transmission method and railway wireless comprehensive relay equipment |
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| CN107014987A (en) * | 2017-06-06 | 2017-08-04 | 四川大学 | The intelligent Multiinputoutput concrete component health monitor method of square-section self-induction |
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