CN202586972U - Multi-system communication signal transmission device based on optical fiber and four pairs of twisted pairs - Google Patents
Multi-system communication signal transmission device based on optical fiber and four pairs of twisted pairs Download PDFInfo
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- CN202586972U CN202586972U CN 201220178705 CN201220178705U CN202586972U CN 202586972 U CN202586972 U CN 202586972U CN 201220178705 CN201220178705 CN 201220178705 CN 201220178705 U CN201220178705 U CN 201220178705U CN 202586972 U CN202586972 U CN 202586972U
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Abstract
The utility model discloses a multi-system communication signal transmission device based on optical fiber and four pairs of twisted pairs and relates to a device for transmitting communication signals. The device comprises a main unit, an expansion unit and a user terminal. The main unit and the expansion unit are connected through the optical fiber, and the expansion unit and the user terminal are connected through the four pairs of the twisted pairs. Mobile signals are transmitted through an optical fiber source between the main unit and the expansion unit. The expansion unit uses idle two pairs of twisted pairs of 4 and 5 and 7 and 8 in a home-entry network cable to transmit the mobile signals, and hundred-mega Ethernet signals transmitted by two pairs of the twisted pairs of 1 and 2 and 3 and 6 are transmitted to the user terminal together with the mobile signals. The multi-system communication signal transmission device leads various communication signals into a client and meets various communication requirements of users. The mobile signals are led into the client, and an indoor mobile signal depth coverage problem of telecommunication operators is solved. A problem that construction of telecommunication operator projects is difficult is solved directly by using the existing optical fiber and home-entry network cable resources.
Description
Technical field
The utility model relates to a kind of device of transmission communication signal, relates in particular to a kind of device based on optical fiber and four pairs of twisted-pair feeder transmission multi-modulation scheme communication signals.
Background technology
Data statistics shows that the mobile data services more than 70% result from indoor.Along with increasing substantially of Chinese 3G (The 3rd Generation Telecommunication, the 3rd third-generation mobile communication technology) user, data service income proportion is increasingly high.For traffic carrying capacity in the absorption chamber better, must improve the indoor signal covering quality, the room area that data traffic requirement is arranged is carried out the indoor covering of the degree of depth.
China three big telecom operators generally adopt the mode (FTTx+LAN technology be a kind of utilize optical fiber to add five types of grid line modes realize the broadband access scheme) of FTTX+LAN for the user broadband inserting service to be provided now; Near user's corridor or light current and ONU (Optical Network Unit optical node) unit is installed, and for the user hundred mega broadband access service is provided through the netting twine of laying of registering one's residence (category-5 cable or CAT5E UTP cable).When transmission 100 m ethernet data, only need use 1 and 2,3 and 6 two pair of twisted-pair feeder, 4 and 5,7 and 8 these two pairs of twisted-pair feeders are in idle condition.
Utilizing two pairs of idle twisted-pair feeder transmission movable signals, can solve family's covering problem of movable signal, is that three big telecom operators provide a kind of scheme that indoor movable signal covers that solves.
The utility model content
The purpose of the utility model just is to overcome the shortcoming and defect that prior art exists, and a kind of device (abbreviation device) based on optical fiber and four pairs of twisted-pair feeder transmission multi-modulation scheme communication signals is provided.
The purpose of the utility model is achieved in that
This device is that a kind of degree of depth of user side cheaply covers scheme.This scheme is to utilize telecom operators to have resource; Comprise existing optical fiber and register one's residence netting twine (category-5 cable or CAT5E UTP cable) resource; In users home, multiple access services such as movable signal access, broadband access network are provided for the domestic consumer with multi-modulation scheme movable signal and ethernet signal co-transmitted.
Concrete scheme is following:
This device comprises master unit, expanding element and user terminal three parts;
Its annexation is:
Master unit is connected through optical fiber with expanding element, and expanding element is connected through four pairs of twisted-pair feeders with user terminal;
Utilize optical fiber to insert unnecessary fiber resource transmission movable signal between master unit and the expanding element; The expanding element utilization is registered one's residence, and 4 and 5,7 and 8 two pairs of idle twisted-pair feeders transmit movable signals in the netting twine, and the 100 m ethernet signal that transmits with 1 and 2,3 and 6 two pair of twisted-pair feeder is transferred to user terminal.
The operation principle of this device:
1) movable signal transmission principle
GSM (Global System for Mobile Communications from the base station; Global system for mobile communications), CDMA (Code Division Multiple Access; Code division multiple access), WCDMA (Wideband Code Division Multiple Access; WCDMA), TDSCDMA (Time Division-Synchronous Code Division Multiple Acces; The code division multiple access that time-division is synchronous) multiple standard mobile signal gets into master unit through radio frequency cable, is separated into the uplink and downlink radiofrequency signal in master unit inside through multiplexer.Downlink radio-frequency signal converts downlink optical signal into through laser, through being transferred to expanding element behind wavelength division multiplexer and the uplink optical signal wavelength division multiplexing through amplifier and numerical-control attenuator adjustment signal strength signal intensity.Expanding element receives downlink optical signal, converts downlink radio-frequency signal into through laser, converts descending intermediate-freuqncy signal into through frequency mixer, and through 4 and 5 this twisted-pair feeder is transferred to user terminal.In order to guarantee the synchronism of expanding element and user terminal, with the reference clock signal Fr of expanding element also through 4 and 5 this twisted-pair feeder is transmitted.Because reference clock signal Fr and descending intermediate-freuqncy signal exist certain frequency at interval, guarantee that user terminal can extract the coherent reference clock signal, for reference is done in the user terminal frequency conversion.User terminal is received in 4 and 5 these descending intermediate-freuqncy signals to transmitting on the twisted-pair feeder; Through amplifier and numerical-control attenuator adjustment signal strength signal intensity; Carry out signal filtering through filter, convert downlink radio-frequency signal into through frequency mixer again, finally be transmitted in the free space through antenna.
GSM, CDMA, WCDMA, many kinds of standard mobile signals of TDSCDMA get into user terminal through antenna in the free space; After amplifier and numerical-control attenuator adjustment signal strength signal intensity; Carry out signal filtering through filter; Convert up intermediate-freuqncy signal into through frequency mixer, again through 7 and 8 this twisted-pair feeder is transferred to expanding element.Expanding element receives up intermediate-freuqncy signal, converts up radiofrequency signal into through frequency mixer, converts uplink optical signal into through laser, through being transferred to master unit behind wavelength division multiplexer and the downlink optical signals wavelength division multiplexing.Master unit receives uplink optical signal, converts up radiofrequency signal into through laser, through amplifier and numerical-control attenuator adjustment signal strength signal intensity, passes the base station back after the multiplexer through master unit closes the road.
Intermediate-freuqncy signal after the multi-modulation scheme movable signal conversion adopts different IF-FREs, has guaranteed that each intermediate-freuqncy signal is not transmitted can interfere with each other in netting twine.
2) ethernet signal and movable signal are total to the category-5 cable transmission principle
When on category-5 cable, transmitting the 100 m ethernet data, only need use 1 and 2,3 and 6 two pair of twisted-pair feeder, 4 and 5,7 and 8 these two pairs of twisted-pair feeders are in idle condition.Native system uses 4 and 5,7 and 8 two pairs of twisted-pair feeder transmission movable signals, isolates each other with the ethernet signal of 1 and 2,3 and 6 liang of centering, has guaranteed the reliability of signal transmission.
3) expanding element and user terminal monitoring Principle of Communication
Adopt RS485 communication protocol between expanding element and the user terminal; With the RS485 signal of communication through 4 and 5 this twisted-pair feeder is transferred to user's section of gathering, user terminal comes out RS485 signal extraction (because the RS485 signal is low frequency signal, with intermediate-freuqncy signal big frequency interval to be arranged; Thereby realize signal extraction easily); The operating state of control user terminal if various alarms appear in user terminal, also can be sent to expanding element with information through the RS485 communication mode.
4) user terminal power supply the principle
Adopt the POE scheme to carry out remote power feeding. Positive source walk 1 and 2 this to twisted-pair feeder, power cathode walk 3 and 6 this to twisted-pair feeder, simultaneously 1 and 2,3 and 6 these two pairs of twisted-pair feeders are walked the 100 m ethernet signal.Expanding element and user terminal increase network transformer at the network interface incoming end, guarantee that power supply does not influence other non-native system equipment.
The utility model patent has advantage and good effect:
1,, solves user's multiple communication need with the disposable introducing user side of multiple communication signal;
2, movable signal is introduced user side, solve the indoor movable signal degree of depth covering problem of telecom operators;
3, directly utilize the existing fiber and the netting twine resource of registering one's residence, solve the difficult problem of telecom operators' engineering construction;
4, two-stage networking mode, 128 far-ends of cascade solve the low-cost movable signal covering problem of telecom operators' multizone at most.
Description of drawings
Fig. 1 is the block diagram of this device, among the figure:
The 100-master unit; The 200-expanding element; The 300-user terminal.
Fig. 2 is the block diagram of master unit, among the figure:
U1-radio frequency branching unit, U2-RF switch unit,
U3-downlink gain allocation units, U4-uplink gain allocation units,
U5-light signal processing unit, U6-power supply unit, U7-centralized control unit;
Fig. 3 is the block diagram of expanding element, among the figure:
U8-light signal processing unit, the U9-converter unit,
U10-uplink and downlink signal allocation units,
The U11-centralized control unit, the U12-power supply unit,
B1～B32-single-ended transfer difference unit, T1～T16-network transformer;
Fig. 4 is the block diagram of user terminal, among the figure:
The U13-duplexer, the U14-converter unit,
The U15-centralized control unit, the U16-POE power supply unit,
B33～B34-single-ended transfer difference unit; The T17-network transformer.
Fig. 5 is the block diagram of radio frequency branching unit U1 in the master unit 100, among the figure:
U1.1, U1.2 ... U1.7-the 1st, 2 ... 7 filters;
Fig. 6 is the block diagram of downlink gain allocation units U3 in the master unit 100, among the figure:
The U3.1-amplifier, U3.2-numerical-control attenuator, U3.3-multiplexer, U3.4-power splitter;
Fig. 7 is the block diagram of uplink gain allocation units U4 in the master unit 100, among the figure:
The U4.1 mixer, U4.2 multiplexer, U4.3 numerical-control attenuator, U4.4 amplifier;
Fig. 8 is the block diagram of light signal processing unit U5 in the master unit 100, among the figure:
The U5.1-wavelength division multiplexer, the J-laser;
Fig. 9 is the block diagram of centralized control unit U7 in the master unit 100, among the figure:
The U7.1-MCU chip, U7.2-FLASH chip, U7.3-ROM chip;
Figure 10 is the block diagram of light signal processing unit U8 in the expanding element 200, among the figure:
The J1-downstream laser, the up laser of J2-, U8.1-wavelength division multiplexer;
Figure 11 is the block diagram of converter unit U9 in the expanding element 200, among the figure:
J1, J2, J3, J4-the 1st, 2,3,4 multiplexers,
The U9.1-down conversion module, U9.2-up-conversion module, U9.3-crystal oscillator;
Figure 12 is the block diagram of uplink and downlink signal allocation units U10 in the expanding element 200, among the figure:
The U10.1-duplexer, U10.2-power splitter, U10.3-mixer;
Figure 13 is the block diagram of centralized control unit U11 in the expanding element 200, among the figure:
The U11.1-MCU chip, U11.2-FLASH chip and U11.3-ROM chip;
Figure 14 is the block diagram of converter unit U14 in the user terminal 300, among the figure:
J1, J2, J3-the 1st, 2,3 multiplexers,
U14.1-up-conversion module, U14.2-down conversion module, U14.3-RF switch;
Figure 15 is the block diagram of centralized control unit U15 in the user terminal 300, among the figure:
U15.1-MCU chip U15.2-FLASH chip, the U15.3-ROM chip.
Embodiment
Below in conjunction with accompanying drawing this device is specified:
One, overall
Like Fig. 1, this device comprises master unit 100, expanding element 200 and user terminal 300 3 parts;
Its annexation is:
Utilize the unnecessary fiber resource transmission movable signal of FTTX between master unit 100 and the expanding element 200; Expanding element 200 utilizes 4 and 5,7 and 8 two pairs of idle in the netting twine of registering one's residence twisted-pair feeders to transmit movable signal, and is transferred to user terminal 300 with the 100 m ethernet signal of 1 and 2,3 and 6 two pair of twisted-pair feeder transmission.
Its operation principle is:
Many kinds of standard mobile signals of GSM, CDMA, WCDMA, TDSCDMA from the base station enter into master unit 100 through radio frequency cable; After the conversion of master unit 100 inner completion radiofrequency signals and light signal; Send to expanding element 200 through optical fiber; The light signal that expanding element 200 receives closes the road with the ethernet signal that inserts expanding element 200 through twisted-pair feeder, and sends to user terminal 300 through twisted-pair feeder after the conversion of accomplishing light signal and intermediate-freuqncy signal; User terminal 300 accomplishes that ethernet signals separate with intermediate-freuqncy signal, after the conversion of intermediate-freuqncy signal and radiofrequency signal, services such as movable signal access, broadband access network are provided.
Two, functional module
1, master unit 100
Like Fig. 2, master unit 100 is made up of radio frequency branching unit U1, RF switch unit U2, downlink gain allocation units U3, uplink gain allocation units U4, light signal processing unit U5, power supply unit U6, centralized control unit U7;
Its annexation is:
Radio frequency branching unit U1, have/or nothing-RF switch unit U2, downlink gain allocation units U3 and light signal processing unit U5 connect to form down link successively;
Light signal processing unit U5, uplink gain allocation units U4, have/or nothing-RF switch unit U2 and radio frequency branching unit U1 connect to form up link successively;
Centralized control unit U7 connects respectively and controls other unit;
Power supply unit U6 connects other unit respectively, and energy is provided.
Its operation principle is:
After GSM, CDMA, WCDMA, many kinds of standard mobile signals of TDSCDMA get into master unit 100; Accomplishing uplink and downlink signal through radio frequency branching unit U1 separates; RF switch unit U2 is used to control the link switchover up and down of TDSCDMA signal; If do not have the transmission of TD standard signal, can cancel RF switch unit U2.
The GSM downlink radio-frequency signal GRD that process radio frequency branching unit U1 separates, WCDMA downlink radio-frequency signal WRD, CDMA downlink radio-frequency signal CRD, TDSCDMA downlink radio-frequency signal TRD are divided into RD1～RD8 octuple downlink radio-frequency signal after closing the road through downlink gain allocation units U3 completion signal gain adjustment and signal.RD1～RD8 downlink radio-frequency signal is transferred to light mouth F1～F8 respectively after accomplishing the electric light conversion through light signal processing unit U5.
In like manner, the up radiofrequency signal that receives through light mouth F1～F8 realizes becoming the up radiofrequency signal of RU1～RU8 after the opto-electronic conversion through light signal processing unit U5; The up radiofrequency signal of RU1～RU8 is after uplink gain allocation units U4 completion signal closes road and gain adjustment; With signal is the up radiofrequency signal GRU of GSM, the up radiofrequency signal WRU of WCDMA, the up radiofrequency signal CRU of CDMA, the up radiofrequency signal TRU of TDSCDMA along separate routes, and through passing the base station back on the radio frequency branching unit U1.
Power supply unit U6 provides energy for respectively RF switch unit U2, downlink gain allocation units U3, uplink gain allocation units U4, light signal processing unit U5, centralized control unit U7.
Centralized control unit U7 control RF switch unit U2, downlink gain allocation units U3, uplink gain allocation units U4, light signal processing unit U5.
2, expanding element 200
Like Fig. 3, expanding element 200 is made up of light signal processing unit U8, converter unit U9, uplink and downlink signal allocation units U10, centralized control unit U11, power supply unit U12, single-ended transfer difference unit B 1～B32 and network transformer T1～T16;
Its annexation is:
Light signal processing unit U8, converter unit U9, uplink and downlink signal allocation units U10, single-ended transfer difference unit B 1～B32 are connected with network transformer T1～T16 successively;
Power supply unit U12 output dc voltage, the secondary coil through network transformer unit T1～T16 is fed on 1 and 2,3 and 6 these two pairs of twisted-pair feeders, and through EM1～EM16 port transmission to user terminal 300;
Power supply unit U12 is connected with light signal processing unit U8, converter unit U9 and centralized control unit U11 respectively, and energy is provided;
Centralized control unit U11 is connected with converter unit U9 with light signal processing unit U8 respectively, controls them.
Its operation principle is:
Downlink optical signal is in inner downlink optical signal and the downlink radio-frequency signal FD opto-electronic conversion accomplished of light signal processing unit U8; Change at inner downlink radio-frequency signal FD of completion of converter unit U9 and descending intermediate-freuqncy signal ID; And delivering to uplink and downlink signal allocation units U10, converter unit U9 also delivers to uplink and downlink signal allocation units U10 with its clock internal reference frequency Fr simultaneously; Descending intermediate-freuqncy signal ID and clock reference frequency Fr close the road and are divided into ID1～ID16 ten six tunnel descending intermediate-freuqncy signals inner completion of uplink and downlink signal allocation units U10, again ID1～ID16 ten six tunnel descending intermediate-freuqncy signals are carried out the conversion of single-ended-to-difference through single-ended transfer difference unit B a 1～B16; After converting differential signal into, close the road and be transferred to user terminal 300 through twisted-pair feeder with a pair of RS485 control signal of centralized control unit U11.
In like manner; Up intermediate-freuqncy signal from user terminal 300 is delivered to expanding element 200 through twisted-pair feeder; In expanding element 200, at first accomplishing difference through single-ended transfer difference unit B a 17～B32 changes single-end conversion, carries out signal in uplink and downlink signal allocation units U10 inside then and closes the road; Close up intermediate-freuqncy signal IU behind the road and get into converter unit U9 and accomplish up-conversion, become light signal after accomplishing the electric light conversion in that light signal processing unit U8 is inner again, and return master unit 100 through the oral instructions of F9 light.
From ONU (Optical Network Unit; Optical network unit) ethernet signal E1～E16 (1 and 2; 3 and 6 two pairs of twisted-pair feeders); After being sent to expanding element 200, respectively through a network transformer T1～T16, and then with two pairs of twisted-pair feeders of descending intermediate-freuqncy signal ID1～ID16, up intermediate-freuqncy signal IU1～IU16 transmission together through EM1～EM16 port transmission to user terminal 300;
Power supply unit U12 output dc voltage, the secondary coil through network transformer unit T1～T16 is fed on 1 and 2,3 and 6 these two pairs of twisted-pair feeders, and through EM1～EM16 port transmission to user terminal 300;
Power supply unit U12 returns light signal processing unit U8, converter unit U9, centralized control unit U11 energy is provided;
Centralized control unit U11 control light signal processing unit U8 and converter unit U9.
3, user terminal 300
Like Fig. 4, user terminal 300 is made up of duplexer U13, converter unit U14, centralized control unit U15, POE power supply unit U16, single-ended transfer difference unit B 33～B34, network transformer unit T17;
Its annexation is:
Expanding element 200, single-ended transfer difference unit B 33, duplexer U13, converter unit U14 are connected with antenna successively, and downstream signal is sent to free space;
Antenna, converter unit U14, single-ended transfer difference unit B 34 connect successively, and uplink signal transmissions is arrived expanding element 200;
Expanding element 200, network transformation T17 connect successively, and broadband signal is passed through the E17 port transmission in Ethernet switch;
POE power supply unit U15 is that each unit of user terminal 300 provides energy;
Centralized control unit U16 connects, control of conversion unit U14.
Its operation principle is:
Pass the ethernet signal and the intermediate-freuqncy signal of coming from expanding element 200, enter into user terminal 300 through the EM17 mouth;
Descending intermediate-freuqncy signal ID and reference signal Fr 4 and 5 this signal on twisted-pair feeder is accomplished differential-to-single-ended conversion through single-ended transfer difference unit B 33, accomplish Signal Separation through duplexer U13, and deliver among the converter unit U14; Intermediate-freuqncy signal ID arrives free space through antenna transmission after the inner completion of converter unit U14 up-converts to radiofrequency signal;
The up radiofrequency signal that receives from antenna down-converts to up intermediate-freuqncy signal IU through converter unit U14, after the conversion of single-ended transfer difference unit B 34 single-ended-to-differences, again through 7 and 8 this twisted-pair feeder is transferred to expanding element 200.
The ethernet signal that transmits on 1 and 2,3 and 6 these two pairs of twisted-pair feeders provides broadband inserting service through network transformation T17;
POE power supply unit U15 will extract direct voltage from 1 and 2,3 and 6 these two pairs of twisted-pair feeders, after conversion, for each unit of user terminal 300 provides energy;
Centralized control unit U16 from 4 and 5 this twisted-pair feeder is extracted the RS485 control signal and accomplishes signal resolution; Thereby control of conversion unit U14 and Ethernet data processing unit U15 regularly upload to their operating state the centralized control unit U11 of expanding element 200 simultaneously.
Three, sub-function module
1, the sub-function module in the master unit 100
1-1) radio frequency branching unit U1
Like Fig. 5, radio frequency branching unit U1 is by the 1st, 2 ... 7 filter U1.1, U1.2 ... U1.7 forms.
Its operation principle is:
GSM, CDMA, WCDMA, many kinds of standards of TDSCDMA are closed the road signal respectively through the 1st, 2 ... 7 filter U1.1, U1.2 ... U1.7 is separated into GSM down link radiofrequency signal GRD, WCDMA down link radiofrequency signal WRD, CDMA down link radiofrequency signal CRD, GSM up link radiofrequency signal GRU, WCDMA up link radiofrequency signal WRU, CDMA up link radiofrequency signal CRU, TDSCDMA uplink downlink radiofrequency signal TR.
1-2) RF switch unit U2
RF switch unit U2 is a kind of link selection device, can make signal between two links, switch transmission, can select the WKB811G of CECT for use.
1-3) downlink gain allocation units U3
Like Fig. 6, downlink gain allocation units U3 is made up of amplifier (AMP) U3.1, numerical-control attenuator (ATT) U3.2, multiplexer U3.3 and the power splitter U3.4 that connect successively.
Its operation principle is:
GSM down link radiofrequency signal GRD, WCDMA down link radiofrequency signal WRD, CDMA down link radiofrequency signal CRD, TDSCDMA down link radiofrequency signal TRD are through amplifier AMP U3.1 and the numerical-control attenuator ATTU3.2 adjustment that gains; Through multiplexer U3.3 each standard signal is closed the road, the downlink radio-frequency signal that will close behind the road through power splitter U3.4 again is divided into RD1～RD8.
1-4) uplink gain allocation units U4
Like Fig. 7, uplink gain allocation units U4 is made up of the mixer U4.1, multiplexer U4.2, numerical-control attenuator (ATT) U4.3 and amplifier (AMP) U4.4 that connect successively.
Its operation principle is:
The up radiofrequency signal RU1 that uplink gain allocation units U4 receives in the master unit 100～RU8 closes the road through mixer U4.1; Be separated into GSM up link radiofrequency signal GRU, WCDMA up link radiofrequency signal WRU, CDMA up link radiofrequency signal CRU, TDSCDMA up link radiofrequency signal TRU through multiplexer U4.2 again, pass through numerical-control attenuator (ATT) U4.3 and amplifier (AMP) the U4.4 adjustment that gains at last.
1-5) light signal processing unit U5
Like Fig. 8, light signal processing unit U5 is made up of interconnective laser J and wavelength division multiplexer U5.1:
Its operation principle is:
RD1～RD8 downlink radio-frequency signal converts downlink optical signal to through laser J (1～8);
Uplink optical signal converts the up radiofrequency signal of RU1～RU8 to through laser J (9～16);
And the up-downgoing light signal adopts wavelength optical signals, and wavelength division multiplexer U5.1 (1～8) realizes up-downgoing light signal multiplexing transmission on optical fiber.
1-6) power supply unit U6
Power supply unit U6 is a kind of power source conversion device, can convert the 220V alternating current into the 12V direct current, can select the NES-100-12 of MEANWELL for use.
1-7) centralized control unit U7
Like Fig. 9, centralized control unit U7 is made up of MCU chip U7.1, FLASH chip U7.2 and rom chip U7.3;
MCU chip U7.1 connects FLASH chip U7.2 and rom chip U7.3 respectively.
Its operation principle is:
MCU chip U7.1 handles the information that receives, and simultaneously control information is sent.
FLASH chip U7.2 provides the calculated data memory space for MCU chip U7.1, and rom chip U7.3 stores default configuration information, calls when being used for MCU chip U7.1 initialization.
2, the sub-function module in the expanding element 200
2-1) light signal processing unit U8
Like Figure 10, light signal processing unit U8 is made up of downstream laser J1, up laser J2 and wavelength division multiplexer U8.1;
Downstream laser J1 is connected with wavelength division multiplexer U8.1 respectively with up laser J2.
Its operation principle is:
The up radiofrequency signal of FU converts uplink optical signal to through up laser J2; Downlink optical signal converts the FD downlink radio-frequency signal to through downstream laser J1; The up-downgoing light signal adopts wavelength optical signals, and wavelength division multiplexer U8.1 accomplishes up-downgoing light signal multiplexing transmission on optical fiber.
2-2) converter unit U9
Like Figure 11, converter unit U9 is by the 1st, 2,3,4 multiplexer multiplexer J1, J2, J3, J4, and down conversion module U9.1 (1～4), up-conversion module U9.2 (1～4), crystal oscillator U9.3 form;
The 1st multiplexer J1, down conversion module U9.1 (1～4), the 3rd multiplexer J3 connect to form down link successively;
The 4th multiplexer J4, up-conversion module U9.2 (1～4), the 2nd multiplexer J2 connect to form up link successively;
Crystal oscillator U9.3 is connected with up-conversion module U9.2 (1～4) with down conversion module U9.1 (1～4) respectively;
Centralized control unit U7 is connected with down conversion module U9.1 (1～4), up-conversion module U9.2 (1～4) respectively through the outer monitoring interface;
Its operation principle is:
Down link radiofrequency signal FD is through the 1st multiplexer J1; Be separated into GSM down link radiofrequency signal GRD, WCDMA down link radiofrequency signal WRD, CDMA down link radiofrequency signal CRD, TDSCDMA down link radiofrequency signal TRD; Through down conversion module U9.1 (1～4) frequency conversion is GSM down link intermediate-freuqncy signal GID, WCDMA down link intermediate-freuqncy signal WID, CDMA down link intermediate-freuqncy signal CID, TDSCDMA down link intermediate-freuqncy signal TID, and closing the road through multiplexer J3 again is down link intermediate-freuqncy signal ID;
Up link intermediate-freuqncy signal IU is through the 4th multiplexer J4; Be separated into GSM up link intermediate-freuqncy signal GIU, WCDMA up link intermediate-freuqncy signal WIU, CDMA up link intermediate-freuqncy signal CIU, TDSCDMA up link intermediate-freuqncy signal TIU; Through up-conversion module U9.2 (1～4) frequency conversion is GSM up link radio frequency signal GRU, WCDMA up link radiofrequency signal WRU, CDMA up link radiofrequency signal CRU, TDSCDMA up link radiofrequency signal TRU frequently, and closing the road through multiplexer J2 again is up link radiofrequency signal RU;
Crystal oscillator U9.3 provides reference signal for down conversion module U9.1 (1～4) and up-conversion module U9.2 (1～4), and gives user terminal 300 through netting twine with reference signal transmission;
Centralized control unit U7 is through outer monitoring interface control down conversion module U9.1 (1～4), up-conversion module U9.2 (1～4);
2-3) uplink and downlink signal allocation units U10
Like Figure 12, uplink and downlink signal allocation units U10 is made up of duplexer U10.1, power splitter U10.2 and mixer U10.3.
Its operation principle is:
Descending intermediate-freuqncy signal ID and reference signal Fr are divided into 16 tunnel descending intermediate-freuqncy signal ID1～16 through power splitter U10.2 after closing the road through duplexer U10.1; It is the IU signal that the road is closed through mixer U10.3 in up intermediate-freuqncy signal IU1～16.
2-4) centralized control unit U11
Like Figure 13, centralized control unit U11 is made up of MCU chip U11.1, FLASH chip U11.2 and rom chip U11.3;
FLASH chip U11.2 and rom chip U11.3 are connected respectively to MCU chip U11.1.
Its operation principle is:
FLASH chip U11.2 provides the calculated data memory space for MCU chip U11.1, and rom chip U11.3 stores default configuration information, calls when being used for MCU chip U11.1 initialization.MCU chip U11.1 handles the information that receives, and simultaneously control information is sent.
2-5) power supply unit U12
Power supply unit U12 is a kind of power source conversion device, can convert the 220V alternating voltage into the 12V direct voltage, can select the NES-100-12 of MEANWELL for use.
2-6) single-ended transfer difference unit B 1～B32
Single-ended transfer difference unit B 1～B32 is a kind of impedance conversion device, can realize that single channel and two differential circuits signal change mutually, can select for use Mini-Circuits TCM4-6T.
2-7) network transformer T1～T16
Network transformer T1～T16 is a kind of direct-current coupling device, can be implemented on the differential signal subsidiary direct current signal, can select for use MNC H1601CG.
3, the sub-function module in the user terminal 300
3-1) duplexer U13
Duplexer U13 is a kind of frequency separation device, can realize that two kinds of different frequency signals separate, and can select for use a high pass filter and a low pass filter combination to realize.
3-2) converter unit U14
Like Figure 14, converter unit U14 is made up of the 1st, 2,3 multiplexer J1, J2, J3, up-conversion module U14.1 (1～4), down conversion module U14.2 (1～4), RF switch U14.3;
The 1st multiplexer J1, up-conversion module U14.1 (1～4), have/or nothing-RF switch unit U14.3, the 3rd multiplexer J3 connect to form down link successively;
The 3rd multiplexer J3, have/or nothing-RF switch unit U14.3, down conversion module U14.2 (1～4), the 2nd multiplexer J2 connect to form up link successively;
Centralized control unit U7 is connected with up-conversion module U14.1 (1～4), down conversion module U14.2 (1～4) respectively through the outer monitoring interface;
The reference signal Fr signal that expanding element 200 transmits is connected with up-conversion module U14.1 (1～4), down conversion module U14.2 (1～4) respectively.
Its operation principle is:
RF switch U14.3 is used to control the link switchover up and down of TDSCDMA signal, if there is not the transmission of TD standard signal, can cancel RF switch U14.3.
Signal ID is through the 1st multiplexer J1 in the down link; Be separated into signal GID in the GSM down link, WCDMA down link intermediate-freuqncy signal WID, CDMA down link intermediate-freuqncy signal CID, TDSCDMA down link intermediate-freuqncy signal TID; Through up-conversion module U14.1 (1～4) frequency conversion is GSM down link radiofrequency signal GRD, WCDMA down link radiofrequency signal WRD, CDMA down link radiofrequency signal CRD, TDSCDMA down link radiofrequency signal TRD, and closing the road through the 3rd multiplexer J3 again is down link radiofrequency signal GSM/CDMA/WCDMA/TD;
Up link radiofrequency signal GSM/CDMA/WCDMA/TD is through the 3rd multiplexer J3; Isolate GSM up link radiofrequency signal GRU, WCDMA up link radiofrequency signal WRU, CDMA up link radiofrequency signal CRU, TDSCDMA up link radiofrequency signal TRU; Through down conversion module U14.2 (1～4) frequency conversion is frequent signal GIU, WCDMA up link intermediate-freuqncy signal WIU, CDMA up link intermediate-freuqncy signal CIU, TDSCDMA up link intermediate-freuqncy signal TIU in the GSM up link, and closing the road through the 2nd multiplexer J2 again is up link intermediate-freuqncy signal IU;
The reference signal Fr signal that expanding element 200 transmits is that up-conversion module U14.1 (1～4) and down conversion module U14.2 (1～4) provide reference signal;
Centralized control unit U7 is through outer monitoring interface control up-conversion module U14.1 (1～4), down conversion module U14.2 (1～4), RF switch U14.3.
3-3) centralized control unit U15
Like Figure 14, centralized control unit U15 is made up of MCU chip U15.1, FLASH chip U15.2 and rom chip U15.3.FLASH chip U15.2 and rom chip U15.3 are connected respectively to MCU chip U15.1.
Its operation principle is:
FLASH chip U15.2 provides the calculated data memory space for MCU chip U15.1, and rom chip U15.3 stores default configuration information, calls when being used for MCU chip U15.1 initialization.MCU chip U15.1 handles the information that receives, and simultaneously control information is sent.
3-4) POE power supply unit U16
Power supply unit U16 is a kind of power source conversion device, can convert the 48V direct current into the 5V direct current, can select the NES-100-12 of MEANWELL for use.
3-5) single-ended transfer difference unit B 33～B34
Single-ended transfer difference unit B 33～B34 is a kind of impedance conversion device, can realize that single channel and two differential circuits signal change mutually, can select for use Mini-Circuits TCM4-6T.
3-6) network transformer unit T17
Network transformer T17 is a kind of direct-current coupling device, can be implemented on the differential signal subsidiary direct current signal, can select for use MNC H1601CG.
Claims (4)
1. device based on optical fiber and four pairs of twisted-pair feeders transmission multi-modulation scheme communication signals is characterized in that:
Comprise master unit (100), expanding element (200) and user terminal (300) three parts;
Its annexation is:
Master unit (100) is connected through optical fiber with expanding element (200), and expanding element (200) is connected through four pairs of twisted-pair feeders with user terminal (300);
Utilize fiber resource transmission movable signal between master unit (100) and the expanding element (200); Expanding element (200) utilizes 4 and 5,7 and 8 two pairs of idle in the netting twine of registering one's residence twisted-pair feeders to transmit movable signals, and the 100 m ethernet signal that transmits with 1 and 2,3 and 6 two pair of twisted-pair feeder is transferred to user terminal (300).
2. by the described a kind of device of claim 1, it is characterized in that based on optical fiber and four pairs of twisted-pair feeder transmission multi-modulation scheme communication signals:
Master unit (100) is made up of radio frequency branching unit (U1), RF switch unit (U2), downlink gain allocation units U3, uplink gain allocation units (U4), light signal processing unit (U5), power supply unit (U6), centralized control unit (U7);
Its annexation is:
Radio frequency branching unit (U1), have/or nothing-RF switch unit (U2), downlink gain allocation units (U3) and light signal processing unit (U5) connect to form down link successively;
Light signal processing unit (U5), uplink gain allocation units (U4), have/or nothing-RF switch unit (U2) and radio frequency branching unit (U1) connect to form up link successively;
Centralized control unit (U7) connects respectively and controls other unit;
Power supply unit (U6) connects other unit respectively, and energy is provided.
3. by the described a kind of device of claim 1, it is characterized in that based on optical fiber and four pairs of twisted-pair feeder transmission multi-modulation scheme communication signals:
Expanding element (200) is by light signal processing unit (U8), converter unit (U9), uplink and downlink signal allocation units (U10), centralized control unit (U11), power supply unit (U12), single-ended transfer difference unit (B1～B32) and network transformer (T1～T16) form;
Its annexation is:
Light signal processing unit (U8), converter unit (U9), uplink and downlink signal allocation units (U10), single-ended transfer difference unit (B1～B32) and network transformer (T1～T16) be connected successively;
Power supply unit (U12) output dc voltage, through the network transformer unit (secondary coil of T1～T16) is fed on 1 and 2,3 and 6 these two pairs of twisted-pair feeders, and through EM1～EM16 port transmission to user terminal (300);
Power supply unit (U12) is connected with light signal processing unit (U8), converter unit (U9) and centralized control unit (U11) respectively, and energy is provided;
Centralized control unit (U11) is connected with converter unit (U9) with light signal processing unit (U8) respectively, controls them.
4. by the described a kind of device of claim 1, it is characterized in that based on optical fiber and four pairs of twisted-pair feeder transmission multi-modulation scheme communication signals:
(B33～B34), network transformer unit (T17) form user terminal (300) by duplexer (U13), converter unit (U14), centralized control unit (U15), POE power supply unit (U16), single-ended transfer difference unit;
Its annexation is:
Expanding element (200), single-ended transfer difference unit (B33), duplexer (U13), converter unit (U14) are connected with antenna successively, and downstream signal is sent to free space;
Antenna, converter unit (U14), single-ended transfer difference unit (B34) connect successively, and uplink signal transmissions is arrived expanding element (200);
Expanding element (200), network transformation (T17) connect successively, and broadband signal is passed through the E17 port transmission in Ethernet switch;
POE power supply unit (U15) provides energy for each unit of user terminal (300);
Centralized control unit (U16) connection, control of conversion unit (U14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220178705 CN202586972U (en) | 2012-04-24 | 2012-04-24 | Multi-system communication signal transmission device based on optical fiber and four pairs of twisted pairs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220178705 CN202586972U (en) | 2012-04-24 | 2012-04-24 | Multi-system communication signal transmission device based on optical fiber and four pairs of twisted pairs |
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| Publication Number | Publication Date |
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| CN202586972U true CN202586972U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220178705 Expired - Lifetime CN202586972U (en) | 2012-04-24 | 2012-04-24 | Multi-system communication signal transmission device based on optical fiber and four pairs of twisted pairs |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9729357B1 (en) | 2016-02-05 | 2017-08-08 | Advoli Limited | System for transmitting control signals over twisted pair cabling using common mode of transformer |
| TWI611671B (en) * | 2016-02-05 | 2018-01-11 | 韌硬軟機電股份有限公司 | System for transmitting control signals over twisted pair cabling using common mode of transformer |
-
2012
- 2012-04-24 CN CN 201220178705 patent/CN202586972U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9729357B1 (en) | 2016-02-05 | 2017-08-08 | Advoli Limited | System for transmitting control signals over twisted pair cabling using common mode of transformer |
| TWI611671B (en) * | 2016-02-05 | 2018-01-11 | 韌硬軟機電股份有限公司 | System for transmitting control signals over twisted pair cabling using common mode of transformer |
| US10193710B2 (en) | 2016-02-05 | 2019-01-29 | Advoli Limited | System for transmitting control signals over twisted pair cabling using common mode of transformer |
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Address after: 430205 Hubei city of Wuhan province Jiangxia Hidden Dragon Island Tan lake two Road No. 1 Patentee after: CITIC Mobile Communication Technology Co., Ltd Address before: 430073 Hubei province Wuhan Dongxin East Lake high tech Development Zone, Road No. 5 Patentee before: Wuhan Hongxin Telecommunication Technologies Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
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Address after: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee after: CITIC Mobile Communication Technology Co.,Ltd. Address before: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee before: CITIC Mobile Communication Technology Co., Ltd |
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Granted publication date: 20121205 |