CN102227099A - Fiber access time service apparatus with time delay measuring system - Google Patents
Fiber access time service apparatus with time delay measuring system Download PDFInfo
- Publication number
- CN102227099A CN102227099A CN2011101501437A CN201110150143A CN102227099A CN 102227099 A CN102227099 A CN 102227099A CN 2011101501437 A CN2011101501437 A CN 2011101501437A CN 201110150143 A CN201110150143 A CN 201110150143A CN 102227099 A CN102227099 A CN 102227099A
- Authority
- CN
- China
- Prior art keywords
- signal
- time service
- global location
- unit
- location time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000835 fiber Substances 0.000 title abstract 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 69
- 230000003287 optical effect Effects 0.000 claims abstract description 25
- 238000005259 measurement Methods 0.000 claims description 98
- 239000013307 optical fiber Substances 0.000 claims description 85
- 238000004804 winding Methods 0.000 claims description 52
- 230000008054 signal transmission Effects 0.000 claims description 16
- 230000005693 optoelectronics Effects 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 6
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 11
- 239000012467 final product Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 230000001934 delay Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Images
Landscapes
- Position Fixing By Use Of Radio Waves (AREA)
- Electric Clocks (AREA)
- Optical Communication System (AREA)
Abstract
The invention provides a fiber access time service apparatus with a time delay measuring system, utilizing a global position time service system to carry out clock calibration on at least one building base band unit. The fiber access time service apparatus comprises a near-end reception module, at least one far-end reception module and a time delay measuring system. The near-end reception module is used for receiving a global positioning time service electric signal exteriorly and converting the signal to a time service optical signal. The at least one far-end reception module is used for receiving a time service optical signal from the near-end reception module and converting the signal to a time service optical signal through photoelectric conversion. The time delay measuring system is used for measuring fiber time delay between the near-end module and the at least one far-end reception module corresponding to the near-end module, and transmitting the time delay to the corresponding at least one building base band unit through the far-end reception module for carrying out clock calibration. According to the fiber access time service apparatus provided in the invention, the time delay measuring system automatically measures the fiber time delay between the near-end reception module and the at least one far-end reception module, and transmits the time delay to the corresponding building base band unit. The operation of the apparatus is simple.
Description
Technical field
The present invention relates to a kind of latency measurement technology, relate in particular to a kind of optical fiber and insert time service device with latency measurement system.
Background technology
In the existing direct discharging station, a local module can be communicated by letter with a plurality of remote end modules through optical fiber, indoor baseband processing unit (Building Base band unit, BBU) clock utilizes the global positioning system that the far-end optical module receives from the near-end optical module usually, and (Global Position System, GPS) clock signal that provides of time dissemination system is carried out synchronously with calibration.
Yet, between near-end optical module and the far-end optical module during through optical fiber communication, because inconvenience during the length manual measurement of optical fiber, so can't calculate optical-fiber time-delay, thereby the time signal that BBU receives is asynchronous with the local gps time signal of near-end optical module, causes this BBU can't proper communication.
Summary of the invention
In view of this, be necessary that the optical fiber that provides a kind of measurement to have the latency measurement system easily inserts time service device.
A kind of optical fiber with latency measurement system inserts time service device, and it is used for utilizing the global location time dissemination system to carry out clock alignment at least one indoor Base Band Unit.Described optical fiber inserts time service device and comprises a near-end receiver module, at least one far-end receiver module and a latency measurement system.Described near-end receiver module is used for from an outside global location time service signal of telecommunication of reception and carries out electric light being converted to the time service light signal.Described at least one far-end receiver module is used for receiving described time service light signal and being the time service signal of telecommunication through opto-electronic conversion from described near-end receiver module through optical fiber.Described latency measurement system is used to measure the optical-fiber time-delay between described local module and corresponding described at least one far-end receiver module and the optical-fiber time-delay that is calculated is transferred to corresponding described at least one indoor Base Band Unit to carry out clock alignment through described at least one far-end receiver module.
Compared with prior art, optical fiber provided by the invention inserts time service device by the automatic optical-fiber time-delay of measuring between described near-end receiver module and described at least one far-end receiver module of latency measurement system is set, and time delay measures transferred in the corresponding indoor baseband processing unit carry out clock alignment, simple to operate, guaranteed that clock signal and the global location time signal in the indoor baseband processing unit is synchronous.
Description of drawings
Fig. 1 is the module diagram that the optical fiber with latency measurement system that first embodiment of the invention provides inserts time service device.
Fig. 2 is the module diagram that the optical fiber of Fig. 1 inserts the first winding module in the time service device.
Fig. 3 is the module diagram that the optical fiber of Fig. 1 inserts first measurement module in the time service device.
Fig. 4 is the module diagram that the optical fiber with latency measurement system that second embodiment of the invention provides inserts time service device.
Fig. 5 is the module diagram that the optical fiber of Fig. 4 inserts the second winding module in the time service device.
Fig. 6 is the module diagram that the optical fiber of Fig. 4 inserts second measurement module in the time service device.
Fig. 7 is the module diagram that the optical fiber with latency measurement system that third embodiment of the invention provides inserts time service device.
Fig. 8 is the module diagram that the optical fiber of Fig. 7 inserts the 3rd winding module in the time service device.
Fig. 9 is the module diagram that the optical fiber of Fig. 7 inserts the 3rd measurement module in the time service device.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See also Fig. 1, the optical fiber with latency measurement system of first embodiment of the invention inserts time service device 10, it is used at least one indoor baseband processing unit (Building Baseband unit, BBU) 100 utilize global location (Global Position System, GPS) time dissemination system carries out clock alignment.Described optical fiber inserts time service device 10 and comprises a near-end receiver module 12, at least one far-end receiver module 14 and one first latency measurement system 16.Described near-end receiver module 12 is used for from an outside global location time service signal of telecommunication of reception and carries out electric light being converted to the time service light signal.It is the time service signal of telecommunication that described at least one far-end receiver module 14 is used for receiving described time service light signal and carrying out opto-electronic conversion from near-end receiver module 12 through optical fiber.The described first latency measurement system is used to measure the optical-fiber time-delay between local module 12 and at least one the far-end receiver module 14 and the optical-fiber time-delay that is calculated is transferred at least one far-end receiver module 14.At least one far-end receiver module 14 transfers at least one corresponding indoor Base Band Unit BBU100 to carry out clock alignment with the time service signal of telecommunication and the described optical-fiber time-delay that receives.
The first latency measurement system 16 comprises one first winding module 162 and one first measurement module 164.In the present embodiment, the described first winding module 162 is arranged in the near-end receiver module, and described first measurement module 164 is arranged at outside to be convenient for carrying.Be appreciated that measurement module 164 also can be set directly at least one corresponding remote end module 14.
See also Fig. 2, the first winding module 162 comprises one first combiner unit 1622, one first electrooptic switching element 1624, first light wavelength division multiplexing 1626 and one first photoelectric conversion unit 1628.Described first combiner unit 1622 comprises a filter 1622a, first a mixer 1622b and a filter 1622c.The first mixer 1622b, first electrooptic switching element 1624, first light wavelength division multiplexing 1626 and first photoelectric conversion unit 1628 and filter 1622c electrically connect the formation loop checking installation successively, and filter 1622a and the first mixer 1622b electrically connect in order to the GPS time service signal of telecommunication that to receive module be f1 from a frequency of local reception of termination nearly and transfer to the first mixer 1622b.In the present embodiment, f1 is 1.5GHz.
See also Fig. 3, measurement module 164 comprises one second light wavelength division multiplexing 1642, one second photoelectric conversion unit 1643, one first branching unit 1644, one the one GPS time signal pulse per second (PPS) acquiring unit 1645, quadrature modulation unit 1646, one second electrooptic switching element 1647, a quadrature demodulation unit 1648 and one first a time-delay calculation unit 1649.
Described first branching unit 1644 comprises a splitter 1644a, a filter 1644b and a filter 1644c.Described splitter 1644a is connected with described filter 1644b and described filter 1644c respectively.Described quadrature modulation unit 1646 comprises a quadrature modulator 1646a and a filter 1646b.
Described second light wavelength division multiplexing 1642, described second photoelectric conversion unit 1643, described splitter 1644a, described filter 1644b, a described GPS time signal pulse per second (PPS) acquiring unit 1645, described quadrature modulator 1646a, described filter 1646b and described second electrooptic switching element 1647 electrically connect successively and form loop checking installation.Wherein, the output of a GPS time signal pulse per second (PPS) acquiring unit 1645 also electrically connects with input of the first time-delay calculation unit 1649.Another output of splitter 1644a and described filter 1644c, described quadrature demodulation unit 1648 and the described first time-delay calculation unit 1649 electrically connect successively.
The first frequency GPS time service signal of telecommunication that near-end receiver module 12 receives transfers to the GPS time service light signal that first electrooptic switching element 1624 is converted to first wavelength behind the filter 1622a and the first mixer 1622b, first light wavelength division multiplexing 1626 is with second light wavelength division multiplexing 1642 of GPS time service optical signal transmission to the first measurement module 164 of first wavelength.In the present embodiment, first wavelength is 1310nm.
Second photoelectric conversion unit 1643 receives the GPS time service light signal of first wavelength and is converted into the first frequency GPS time service signal of telecommunication from described second light wavelength division multiplexing 1642, transfers to a GPS time signal pulse per second (PPS) acquiring unit 1645 through splitter 1644a and filter 1644b.The one GPS time signal pulse per second (PPS) acquiring unit 1645 is to transfer to the quadrature modulator 1646a and the first time-delay calculation unit 1649 respectively behind the pps pulse per second signal with the GPS time service electrical signal conversion of first frequency.Quadrature modulator 1646a and filter 1646b are the GPS time service signal of telecommunication of second frequency f2 with first frequency GPS time service pps pulse per second signal modulated filter and transfer to second electrooptic switching element 1647.Being appreciated that f1 and f2 are inequality gets final product, and the big I of frequency needs own setting according to the user.In the present embodiment, second frequency is 800MHz.
Second electrooptic switching element 1647 is that the GPS time service light signal of second wavelength is after second light wavelength division multiplexing 1642 is back to first light wavelength division multiplexing 1626 of the first winding module 162 with second frequency GPS time service electrical signal conversion.Be appreciated that second wavelength and first wavelength is inequality gets final product, in the present embodiment, second wavelength is 1550nm.
The first opto-electronic conversion unit 1628 of the first winding module 162 receives the GPS time service optical signal of the second wave length that returns and is converted into the GPS time service signal of telecommunication from first light wavelength division multiplexing 1626; After wave filter 1622c filtering, obtain the GPS time service signal of telecommunication of second frequency and transfer to first closing road device 1622a and the first frequency GPS time service signal of telecommunication closes the road, and time service electric signal transmission to the first electrooptic switching element 1624 that will close behind the road carries out time service optical signal in road transfers to measurement module 164 by first light wavelength division multiplexing 1626 second light wavelength division multiplexing 1642 that closes that electric light is converted to first wavelength.
Second light wavelength division multiplexing 1642 carries out opto-electronic conversion for closing the road time service signal of telecommunication with road time service optical signal transmission to the second photoelectric conversion unit 1643 that closes of first wavelength, obtains the second frequency GPS time service signal of telecommunication again and transfer to quadrature demodulation unit 1648 carrying out demodulation after splitter 1643 and filter 1644c filtering.Quadrature demodulation unit 1648 transfers to the first time-delay calculation unit 1649 after with second frequency GPS time service signal of telecommunication demodulation GPS time service pps pulse per second signal.
The first time-delay calculation unit 1649 obtains GPS time service pps pulse per second signal and obtains GPS time service pps pulse per second signal from quadrature demodulation unit 1648 from a GPS time signal acquiring unit 1645 in real time, calculate the time delay difference T1 between two pps pulse per second signals, and obtain the round trip propagation delay time (T1-T0) of time service light signal after deducting the hardware time delay T0 that optical fiber inserts time service device 10 through optical fiber, divided by the 2 one way time delays (T1-T0)/2 that are optical fiber, this one way time delay is transferred to corresponding described at least one indoor Base Band Unit to carry out clock alignment through at least one far-end receiver module 14 again.
Be appreciated that hardware time delay T0 can be according to module control unit such as microcontroller processor (Micro Control Unit, MCU) interior preset of time delay desired value in measurement module 164 of each hardware cell.The value that is appreciated that general T0 can be ignored, and T0 is set to 0 and gets final product.
Be appreciated that the global location time signal in the present embodiment can also be the big dipper clock signal.
See also Fig. 4, it is the module diagram of the light access time service device 20 of second embodiment of the invention, and it is used at least one BBU200 is carried out clock alignment.Optical fiber inserts time service device 20 and comprises a near-end receiver module 22, at least one far-end receiver module 24 and one second latency measurement system 26.The near-end receiver module in the optical fiber access time service device 10 of the optical fiber access time service device 20 and first execution mode and the structure of far-end receiver module are roughly the same, and difference is latency measurement system difference.
The described second latency measurement system 26 comprises one second winding module 262 and one second measurement module 264, and the described second winding module 262 is arranged in the near-end receiver module 22, and described second measurement module 264 is arranged at outside to be convenient for carrying.Be appreciated that measurement module 264 also can be set directly at least one corresponding remote end module 24.
See also Fig. 5, the second winding module 262 comprises one the 3rd electrooptic switching element 2622, one the 3rd light wavelength division multiplexing 2624,2626, one filters 2628 of the 3rd photoelectric conversion unit and one the 4th electrooptic switching element 2629.The 3rd light wavelength division multiplexing 2624, the 3rd photoelectric conversion unit 2626, filter 2628 and the 4th electrooptic switching element 2629 electrically connect successively and form loop checking installation, and it is that the gps signal of f1 exports the 3rd light wavelength division multiplexing 2624 to that the 3rd electrooptic switching element 2622 and the 3rd light wavelength division multiplexing 2624 electrically connect the local frequency of receiving module 22 receptions in order to termination nearly.In the present embodiment, f1 is 1.5GHz.
See also Fig. 6, second measurement module 264 comprises one the 4th light wavelength division multiplexing 2642, one the 4th photoelectric conversion unit 2643, second branching unit 2644 and one the 5th electrooptic switching element 2645, one the 2nd GPS time signal pulse per second (PPS) acquiring unit 2646, one the 5th photoelectric conversion unit 2647, the 3rd GPS time signal pulse per second (PPS) acquiring unit 2648, and one second time-delay calculation unit 2649.
The 4th photoelectric conversion unit 2643, second branching unit 2644, the 5th electrooptic switching element 2645 and the 4th light wavelength division multiplexing 2642 electrically connect successively and form loop checking installation, and an input of another output of second branching unit 2644 and the 2nd GPS time signal pulse per second (PPS) acquiring unit 2646 and the second time-delay calculation unit 2649 electrically connects successively.Another input of another output of the 4th light wavelength division multiplexing 2642 and the 5th photoelectric conversion unit 2647, the 3rd GPS time signal pulse per second (PPS) acquiring unit 2648 and the second time-delay calculation unit 2649 electrically connects successively.
Be appreciated that, to input to the signal quality of the 3rd GPS time signal pulse per second (PPS) acquiring unit 2648 from the 5th photoelectric conversion unit 2647 better in order to make, second measurement module 264 also comprises a filter 2460, and described filter 2640 is arranged between the 5th photoelectric conversion unit 2647 and the 3rd GPS time signal pulse per second (PPS) acquiring unit 2648.
The GPS time service signal of telecommunication that the frequency that near-end receiver module 22 receives is f1 is converted to the GPS time service light signal of first wavelength through the 3rd electrooptic switching element 2622, and transfers to the 4th light wavelength division multiplexing 2642 of second measurement module 264 behind the 3rd light wavelength division multiplexing 2624.In the present embodiment, first wavelength is 1310nm.
It is to transfer to described second branching unit 2644 behind the GPS time service signal of telecommunication that the 4th light wavelength division multiplexing 2642 carries out opto-electronic conversion with GPS time service optical signal transmission to the four photoelectric conversion units 2643 of first wavelength.Second branching unit 2644 is divided into the two-way GPS time service signal of telecommunication with the GPS time service signal of telecommunication of transmission, one road GPS time service signal of telecommunication carries out the GPS time service light signal that electric light is converted to one second wavelength through the 5th electrooptic switching element 2645, and is back to the 3rd light wavelength division multiplexing 2624 of the second winding module 262 through the 4th light wavelength division multiplexing 2642.Another road GPS time service signal of telecommunication that second branching unit 2644 is told transfers to the second time-delay calculation unit 2649 after the 2nd GPS time signal pulse per second (PPS) acquiring unit 2646 obtains pulse per second (PPS).Being appreciated that first wavelength is different with second wavelength gets final product, and in the present embodiment, second wavelength is 1550nm.
The 3rd light wavelength division multiplexing 2624 receives the GPS time service light signal of second wavelength and transfers to the 3rd photoelectric conversion unit 2626 that to carry out opto-electronic conversion be the GPS time service signal of telecommunication from the 4th light wavelength division multiplexing 2642, transfer to the 4th electrooptic switching element 2629 after filter 2628 filtering.The 4th electrooptic switching element 2629 is that the GPS time service light signal of three-wavelength is after the 3rd light wavelength division multiplexing 2624 transfers to the 4th light wavelength division multiplexing 2642 of second measurement module 264 with GPS time service electrical signal conversion.It is the GPS time service signal of telecommunication that the 4th light wavelength division multiplexing 2642 carries out opto-electronic conversion with GPS time service optical signal transmission to the five photoelectric conversion units 2647 of three-wavelength, transfers to the 3rd GPS time signal pulse per second (PPS) acquiring unit 2648 after filter 2640 filtering.Be appreciated that three-wavelength respectively with first wavelength and second wavelength is different gets final product, in the present embodiment, three-wavelength is 1510nm.
The second time-delay calculation unit 2649 obtains the pulse per second (PPS) of the GPS time service signal of telecommunication and the pulse per second (PPS) of obtaining the GPS time service signal of telecommunication from the 3rd GPS time signal pulse per second (PPS) acquiring unit 2648 from the 2nd GPS time signal pulse per second (PPS) acquiring unit 2646 respectively in real time in real time, and calculate two time delay difference T2 between the pps pulse per second signal, and obtain the round trip propagation delay time (T2-T0) of time service light signal after deducting the hardware time delay T0 of winding module 262 and measurement module 264 through optical fiber, divided by the 2 one way time delays (T2-T0)/2 that are optical fiber, this one way time delay is transferred to corresponding described at least one BBU200 to carry out clock alignment through at least one far-end receiver module 24 again.
Be appreciated that hardware time delay T0 can be according to module control unit such as microcontroller processor (Micro Control Unit, MCU) interior preset of time delay desired value in measurement module 264 of each hardware cell.The value that is appreciated that general T0 can be ignored, and T0 is set to 0 and gets final product.
Be appreciated that the global location time signal in the present embodiment can also be the big dipper clock signal.
See also Fig. 7, it is the module diagram of the light access time service device 30 of third embodiment of the invention, and it is used at least one BBU300 is carried out clock alignment.Optical fiber inserts time service device 30 and comprises a near-end receiver module 32, at least one far-end receiver module 34 and a latency measurement system 36.Optical fiber inserts in the time service device 30 optical fiber with first execution mode, and to insert the structure of the near-end receiver module of time service device 10 and far-end receiver module roughly the same, and difference is latency measurement system difference.
Described latency measurement system 36 comprises at least one the 3rd winding module 362 and one the 3rd measurement module 364, described at least one the 3rd winding module 362 correspondence are arranged at least one far-end receiver module 34, and described the 3rd measurement module 364 is arranged in the near-end receiver module 32.
See also Fig. 8, the 3rd measurement module 364 comprises one the 4th branching unit 3640, one second combiner unit 3642, one the 6th electrooptic switching element 3643, one the 5th light wavelength division multiplexing 3644, one the 6th photoelectric conversion unit 3645, one the 4th GPS time signal pulse per second (PPS) acquiring unit 3646, one the 5th GPS time signal pulse per second (PPS) acquiring unit 3467, the 3rd a time-delay calculation unit 3648 and one first frequency shift keying ((Frequency-shift keying, FSK)) modulation/demodulation unit 3649.Described the 4th branching unit 3640 comprises a splitter 3640a and a filter 3640b.Described second combiner unit 3642 comprises a coupler 3642a and a filter 3642b.
Be appreciated that, to input to the signal quality of the 4th GPS time signal pulse per second (PPS) acquiring unit 3646 from the 6th photoelectric conversion unit 3645 better in order to make, the 3rd measurement module 364 also comprises a filter 365, and described filter 365 is arranged between the 6th photoelectric conversion unit 3645 and the 4th GPS time signal pulse per second (PPS) acquiring unit 3646.
See also Fig. 9, the 3rd winding module 362 comprises one the 6th light wavelength division multiplexing 3622, one the 7th photoelectric conversion unit 3624, one the 6th branching unit 3625, one the 7th branching unit 3626, the 7th electrooptic switching element 3627 and one the 2nd a FSK modulation/demodulation unit 3628.Described the 6th branching unit 3625 comprises splitter 3625a, filter 3625b and filter 3625c.Described the 7th branching unit 3626 comprises a splitter 3626a and filter 3626b.
The 6th light wavelength division multiplexing 3622, the 7th photoelectric conversion unit 3624, splitter 3625a, filter 3625b, splitter 3626a, filter 3626b and the 7th electrooptic switching element 3627 electrically connect successively and have formed loop checking installation.Another output of splitter 3625a electrically connects through filter 3625c and the 2nd FSK modulation/demodulation unit 3628.
The GPS time service signal of telecommunication that the frequency that near-end receiver module 32 receives is f1 transfers to coupler 3642a after splitter 3640a and filter 3640b shunt, and is converted to the GPS time service light signal of first wavelength through the 6th electrooptic switching element 3643.The 5th light wavelength division multiplexing 3644 is with the 6th light wavelength division multiplexing 3622 of GPS time service optical signal transmission to the three winding modules 362 of first wavelength.In the present embodiment, f1 is 1.5GHz.In the present embodiment, first wavelength is 1310nm.
The 7th photoelectric conversion unit 3624 is converted to the GPS time service light signal of first wavelength and transfers to splitter 3625a behind the GPS time service signal of telecommunication along separate routes and transfer to splitter 3626a be divided into the two-way time signal after filter 3625b filtering.The road GPS time service signal of telecommunication that splitter 3626a tells transfers to the 7th electrooptic switching element 3627 and carries out the GPS time service light signal that electric light is converted to second wavelength after filter 3626b filtering, and being back to the 5th light wavelength division multiplexing 3644 of the 3rd measurement module 364 through the 6th light wavelength division multiplexing 3622, another road GPS time service signal of telecommunication that splitter 3626a tells transfers to corresponding BBU.Being appreciated that second wavelength is different with first wavelength gets final product, and in the present embodiment, second wavelength is 1550nm.
The 5th light wavelength division multiplexing 3644 receives the GPS time service light signal of second wavelength of passback after the 6th photoelectric conversion unit 3645 carries out opto-electronic conversion is the GPS time service signal of telecommunication, and transfers to the 4th GPS time signal pulse per second (PPS) acquiring unit 3646 after filter 365 filtering.
The 3rd time-delay calculation unit 3648 obtains the pulse per second (PPS) of GPS time signal and the pulse per second (PPS) of obtaining the GPS time signal from the 5th GPS time signal pulse per second (PPS) acquiring unit 3647 from the 4th GPS time signal pulse per second (PPS) acquiring unit 3646 respectively in real time, and calculate two time delay difference T3 between the pps pulse per second signal, and obtain the round trip propagation delay time (T3-T0) of time service light signal after deducting the hardware time delay T0 of winding module 362 and measurement module 364 through optical fiber, divided by the 2 one way time delays (T3-T0)/2 that are optical fiber, this one way time delay is transferred to corresponding described at least one BBU300 to carry out clock alignment through at least one far-end receiver module 34 again.
The 3rd time-delay calculation unit 3648 transmits the optical-fiber time-delay that calculates after a FSK modulation/demodulation unit 3649 modulation with filter 3640b the GPS time service signal of telecommunication transfers to the 6th electrooptic switching element 3643, the six electrooptic switching elements 3643 and will close the light signal that the road conversion of signals is first wavelength after the 5th wavelength division multiplexer 3644 transfers to the 6th light wavelength division multiplexing 3622 of the 3rd winding module 362 after coupler 3642a coupling.The 6th light wavelength division multiplexing 3622 will close road optical signal transmission to the seven photoelectric conversion units 3624, and to carry out opto-electronic conversion be to be divided into two paths of signals after transferring to splitter 3625a behind the signal of telecommunication, one road signal of telecommunication through filter 3625c the optical-fiber time-delay signal is transferred to the 2nd FSK modulation/demodulation unit 3628 carry out demodulation with the optical-fiber time-delay message transmission that will demodulate the 3rd time-delay calculation unit 3648 and calculate to the corresponding BBU to carry out clock alignment, another road signal of telecommunication transfers to splitter 3626a after filter 3625b filtering.
Be appreciated that hardware time delay T0 can be according to the time delay desired value of each hardware cell in measurement module 364, also be module control unit in the near-end receiver module 32 such as microcontroller processor (Micro Control Unit, default in MCU).The value that is appreciated that general T0 can be ignored, and T0 is set to 0 and gets final product.
Be appreciated that, for making the timely feedback information of at least one far-end receiver module 34 energy to inform whether near-end receiver module 32 receives time delay information, the 3rd measurement module 364 comprises that also one the 5th branching unit, 366, the three winding modules also comprise one the 3rd combiner unit 3620.
In the present embodiment, the 5th branching unit 366 comprises a coupler 366a and filter 366b, wherein, the 6th photoelectric conversion unit 3645, coupler 366a and filter 365 electrically connect successively, and another output of coupler 366a electrically connects through a filter 366b and a FSK modulation/demodulation unit 3649.
In the present embodiment, described the 3rd combiner unit 3620 comprises a filter 3620a and a coupler 3620b, wherein, filter 3626b, coupler 3620b and the 7th electrooptic switching element 3627 electrically connect successively, and the 2nd FSK modulation/demodulation unit 3628 electrically connects through another input of filter 3620a and coupler 3620b.
The 2nd FSK modulation/demodulation unit 3628 transfers to the 7th electrooptic switching element 3627 with the GPS time signal of feedback information and filter 3626b output and carries out the light signal that electric light is converted to second wavelength after coupler 3620b closes the road, the 6th light wavelength division multiplexing 3622 is with the 5th light wavelength division multiplexing 3644 that closes road optical signal transmission to the three measurement modules 364 of second wavelength.The 5th light wavelength division multiplexing 3644 carries out opto-electronic conversion for closing the road signal of telecommunication with road optical signal transmission to the six photoelectric conversion units 3645 that close of second wavelength, and coupler 366a and filter 366b tell transmission of feedback information to a FSK modulation/demodulation unit 3649 and carry out demodulation to obtain the information of informing that whether receives of feedback from close the road signal of telecommunication.
Be appreciated that, for making the measurement that can realize automation control optical-fiber time-delay between the 3rd winding module 362 and the 3rd measurement module 364, the 3rd winding module 362 also comprises a switch element 368, and splitter 3626a, described switch element 368 and filter 3626b electrically connect successively.When switch element 368 was opened, the 3rd measuring system 36 began to carry out the measurement of optical-fiber time-delay, and when switch element 368 was closed, measuring system 36 was not carried out the measurement of optical-fiber time-delay.Be appreciated that user Ke Yi measurement need come the On/Off of control switch unit 368 by the module control units at least one remote end module 36.
Be appreciated that, for the measurement result that makes optical-fiber time-delay can intuitively be shown to the user, described optical fiber inserts time service device also can be provided with a display unit, and described display unit is used for the optical-fiber time-delay between the described local module of described latency measurement systematic survey and described at least one far-end receiver module is shown.
Be appreciated that, the 3rd winding module 362 also can be arranged in the near-end receiver module 32, the 3rd measurement module 364 correspondences are arranged at least one far-end receiver module 34, calculate in the 3rd measurement module 364 directly to transfer at least one corresponding BBU behind the optical-fiber time-delay and carry out clock alignment.
Be appreciated that the global location time signal in the present embodiment can also be the big dipper clock signal.
Optical fiber inserts time service device and measures optical-fiber time-delay between near-end receiver module and corresponding at least one far-end receiver module automatically by the latency measurement system is set, and time delay measures transferred in the corresponding indoor baseband processing unit carry out clock alignment, simple to operate, guaranteed that clock signal and the global location time signal in the indoor baseband processing unit is synchronous.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection range that all should belong to claim of the present invention with distortion.
Claims (14)
1. the optical fiber with latency measurement system inserts time service device, and it is used for utilizing the global location time dissemination system to carry out clock alignment at least one indoor Base Band Unit, and described optical fiber inserts time service device and comprises:
A near-end receiver module, it is used for from an outside global location time service signal of telecommunication of reception and carries out electric light being converted to the time service light signal;
At least one far-end receiver module, it is used for receiving described time service light signal and being the time service signal of telecommunication through opto-electronic conversion from described near-end receiver module through optical fiber;
A latency measurement system, it is used to measure the optical-fiber time-delay between described local module and corresponding described at least one far-end receiver module and the optical-fiber time-delay that is calculated is transferred to corresponding described at least one indoor Base Band Unit to carry out clock alignment through described at least one far-end receiver module.
2. optical fiber as claimed in claim 1 inserts time service device, it is characterized in that, described latency measurement system comprises one first winding module and one first measurement module, the described first winding module is arranged in the described near-end receiver module, the described first winding module transfers to described first measurement module after receiving the global location time service signal of telecommunication of a first frequency and be converted to the time service light signal of first wavelength from the outside, described first measurement module is converted to the global location time service light signal of second wavelength again and is back to the described first winding module after the global location time service light signal of described first wavelength being converted to the global location time service signal of telecommunication of a second frequency, the described first winding module is closed the road for closing the road time service signal of telecommunication with described first frequency global location time signal after the global location time service light signal of described second wavelength being converted to the global location time service signal of telecommunication of second frequency, and be converted to first wavelength close road time service light signal after transfer to described first measurement module, described first measurement module is converted to the described road time service light signal that closes to demodulate described second frequency global location time signal after closing the road time service signal of telecommunication, described first measurement module obtain in real time the pulse per second (PPS) of described first frequency global location time signal and institute's demodulation described second frequency global location time signal pulse per second (PPS) and calculate optical-fiber time-delay to transfer to described at least one far-end receiver module.
3. optical fiber as claimed in claim 2 inserts time service device, it is characterized in that, the described first winding unit comprises one first combiner unit, one first electrooptic switching element and one first light wavelength division multiplexing, described first measurement module comprises one second light wavelength division multiplexing, one second photoelectric conversion unit, one first branching unit, one first global location time signal pulse acquiring unit, a quadrature modulation unit and one second electrooptic switching element, the first frequency global location time signal that described near-end receiver module receives is converted to the global location time service light signal of first wavelength through described first combiner unit and described first electrooptic switching element, described first light wavelength division multiplexing is with the global location time service optical signal transmission of described first wavelength described second light wavelength division multiplexing to described first measurement module, described second photoelectric conversion unit receives the global location time service signal of telecommunication that is converted to first frequency behind the global location time service light signal of the first corresponding wavelength and transfers to the described first global location time signal pulse acquiring unit through described first branching unit from described second light wavelength division multiplexing, the described first global location time signal pulse acquiring unit obtain first frequency the global location time service signal of telecommunication pulse per second (PPS) and through described quadrature modulation cells modulate to obtain the global location time service signal of telecommunication of a second frequency, described second electrooptic switching element is that the global location time service light signal of second wavelength is after described second light wavelength division multiplexing is back to described first light wavelength division multiplexing of described winding unit with the global location time service electrical signal conversion of described second frequency.
4. optical fiber as claimed in claim 3 inserts time service device, it is characterized in that, the described first winding module also comprises one first photoelectric conversion unit, described first measurement module also comprises a quadrature demodulation unit and one first time-delay calculation unit, described first photoelectric conversion unit receives the global location time service light signal of described second wavelength of passback from described first light wavelength division multiplexing and the global location time service signal of telecommunication and the described first frequency global location time signal that is converted to second frequency closes the road through described first combiner unit, and the described signal that closes behind the road is transferred to described first electrooptic switching element carry out electric light and be converted to and close road time service light signal, described first light wavelength division multiplexing receive the road time service light signal that closes and transfer to described second light wavelength division multiplexing of described first measurement module, described second light wavelength division multiplexing carries out described road time service optical signal transmission to described second photoelectric conversion unit that closes electric light and is converted to and closes the road time service signal of telecommunication after described first branching unit transfers to described quadrature demodulation unit along separate routes, and the described first time-delay calculation unit obtains described first frequency time signal and transfers to corresponding described at least one far-end receiver module from the time signal pulse per second (PPS) of the described second frequency of described quadrature demodulation unit demodulation and after calculating optical-fiber time-delay from the described first global location time signal pulse per second (PPS) acquiring unit in real time.
5. optical fiber as claimed in claim 1 inserts time service device, it is characterized in that, described latency measurement system comprises one second winding module and one second measurement module, the described second winding module is arranged in the described near-end receiver module, the described second winding module transfers to described second measurement module after receiving a global location time service signal of telecommunication and be converted to the global location time service light signal of first wavelength from the outside, described second measurement module is back to the described second winding module after the global location time service light signal of described first wavelength being converted to the global location time service light signal of one second wavelength, the described second winding module transfers to described second measurement module after the global location time service light signal of described second wavelength being converted to the global location time service light signal of a three-wavelength, described second measurement module obtain in real time the pulse per second (PPS) of the global location time service signal of telecommunication of global location time service light signal conversion of described first wavelength and described three-wavelength the conversion of global location time service light signal the global location time service signal of telecommunication pulse per second (PPS) and calculate optical-fiber time-delay to transfer to described at least one far-end receiver module.
6. optical fiber as claimed in claim 5 inserts time service device, it is characterized in that, the described second winding module comprises one the 3rd electrooptic switching element and one the 3rd light wavelength division multiplexing, described second measurement module comprises one the 4th light wavelength division multiplexing, one the 4th photoelectric conversion unit, one second branching unit and one the 5th electrooptic switching element, the global location time service signal of telecommunication that described near-end receiver module receives is converted to the global location time service light signal of first wavelength through described the 3rd electric light, and behind described the 3rd light wavelength division multiplexing, transfer to described the 4th light wavelength division multiplexing of described second measurement module, described the 4th photoelectric conversion unit transfers to described two branching units after the global location time service light signal of first wavelength of described the 4th light wavelength division multiplexing transmission is converted to the global location time service signal of telecommunication, described second branching unit is told one tunnel global location time service signal of telecommunication and is converted to the global location time service light signal of one second wavelength through described the 5th electrooptic switching element, and is back to the described second winding module through described the 4th light wavelength division multiplexing.
7. optical fiber as claimed in claim 6 inserts time service device, it is characterized in that, the described second winding module also comprises one the 3rd photoelectric conversion unit, a filter and one the 4th electrooptic switching element, described second measurement module also comprises one second global location time signal pulse per second (PPS) acquiring unit, one the 3rd global location time signal pulse per second (PPS) acquiring unit, one the 5th photoelectric conversion unit and one second time-delay calculation unit, described the 3rd light wavelength division multiplexing receives the global location time service light signal of described second wavelength and transfers to described the 3rd photoelectric conversion unit from described the 4th light wavelength division multiplexing and is converted to a global location time service signal of telecommunication, behind described filter filtering, transfer to described the 4th electrooptic switching element and be converted to the global location time service light signal of three-wavelength after described the 3rd light wavelength division multiplexing transfers to the 4th light wavelength division multiplexing of described second measurement module, described the 4th light wavelength division multiplexing is converted to a global location time service signal of telecommunication with global location time service optical signal transmission to described the 5th photoelectric conversion unit of described three-wavelength, and transfer to described the 3rd global location time signal pulse per second (PPS) acquiring unit, another road time service signal of telecommunication that described second branching unit is told transfers to the described second global location time service acquiring unit, described second time-delay calculation is single to be obtained corresponding pulse per second (PPS) and obtains corresponding pulse per second (PPS) from described the 3rd global location time service acquiring unit from the described second global location time signal pulse per second (PPS) acquiring unit in real time respectively, and transfers to described at least one far-end receiver module after calculating optical-fiber time-delay.
8. optical fiber as claimed in claim 1 inserts time service device, it is characterized in that, described latency measurement system comprises one the 3rd measurement module and at least one the 3rd winding module, described the 3rd measurement module is arranged in the described near-end receiver module, described at least one the 3rd winding module correspondence is arranged in described at least one far-end receiver module, described the 3rd measurement module transfers to described the 3rd winding module after receiving a global location time signal and be converted to the first wavelength global location time service light signal from the outside, described the 3rd winding module is back to described the 3rd measurement module and is converted to the global location time service signal of telecommunication after the global location time service light signal of described first wavelength being converted to the global location time service light signal of one second wavelength, and described the 3rd measurement module obtains the pulse per second (PPS) of the described global location time service signal of telecommunication that described near-end receiver module receives and in real time through the pulse per second (PPS) of the described global location time service signal of telecommunication of described the 3rd winding module passback and transfer to described at least one the 3rd winding module of corresponding described at least one far-end receiver module correspondence after calculating optical-fiber time-delay.
9. optical fiber as claimed in claim 8 inserts time service device, it is characterized in that, described the 3rd measurement module comprises one the 4th branching unit, one the 6th electrooptic switching element, one the 5th light wavelength division multiplexing, described the 3rd winding measurement module comprises one the 6th light wavelength division multiplexing, one the 7th photoelectric conversion unit, one the 6th branching unit and one the 7th electrooptic switching element, the global location time service signal of telecommunication that described near-end receiver module receives one the tunnel transfers to the global location time service light signal that described the 6th electrooptic switching element is converted to first wavelength through described the 4th branching unit after along separate routes, described the 5th light wavelength division multiplexing is with the global location time service optical signal transmission of described first wavelength the 6th light wavelength division multiplexing to described the 3rd winding module, described the 7th photoelectric conversion unit transfers to described the 6th branching unit after the global location time service light signal of described first wavelength is converted to the global location time service signal of telecommunication, described the 6th branching unit transfers to described the 7th electrooptic switching element in back one tunnel along separate routes with the described global location time service signal of telecommunication, described the 7th electrooptic switching element with the described global location time service electrical signal conversion global location time service light signal that is second wavelength after described the 6th light wavelength division multiplexing is back to the 5th light wavelength division multiplexing of described the 3rd measurement module.
10. optical fiber as claimed in claim 9 inserts time service device, it is characterized in that, described the 3rd measurement module also comprises one the 6th photoelectric conversion unit, one the 4th global location time signal pulse per second (PPS) acquiring unit, one the 5th global location time signal pulse per second (PPS) acquiring unit and one the 3rd time-delay calculation unit, the global location time service light signal of described second wavelength of described the 6th light wavelength division multiplexing transmission that described the 5th light wavelength division multiplexing receives is after described the 6th photoelectric conversion unit transfers to described the 5th global location time signal pulse per second (PPS) acquiring unit after being converted to the global location time service signal of telecommunication, another road global location time service signal of telecommunication that described the 4th branching unit is told transfers to described the 4th global location time signal pulse per second (PPS) acquiring unit, and described the 3rd time-delay calculation unit in real time obtains pulse per second (PPS) and obtains from the pulse per second (PPS) of the described global location time service signal of telecommunication of described the 3rd winding module passback and after calculating optical-fiber time-delay from described the 5th global location time signal pulse per second (PPS) acquiring unit from described the 4th global location time signal pulse per second (PPS) acquiring unit respectively and transfers to described at least one far-end receiver module.
11. optical fiber as claimed in claim 10 inserts time service device, it is characterized in that, described the 3rd measurement module also comprises one second combiner unit and one first frequency shift keying modulation/demodulation unit, described the 3rd winding module also comprises one the 6th branching unit and one second frequency shift keying modulation/demodulation unit, described the 3rd time-delay calculation unit is told the optical-fiber time-delay that calculates through described first frequency shift keying modulation/demodulation unit modulation back and described the 4th branching unit road global location time signal transfers to described the 6th electrooptic switching element after described second combiner unit closes the road, it is to close the road light signal after described the 5th wavelength division multiplexer transfers to the 6th light wavelength division multiplexing of described the 3rd winding module that described the 6th electrooptic switching element will close the road electrical signal conversion, described the 6th light wavelength division multiplexing will close road optical signal transmission to described the 7th photoelectric conversion unit to carry out opto-electronic conversion transfer to described the 6th branching unit for closing the road signal of telecommunication after, described the 6th branching unit from described close transfer to behind the described optical-fiber time-delay signal of filtering the signal of telecommunication of road the described second frequency shift keying modulation/demodulation unit carry out demodulation with the optical-fiber time-delay message transmission of demodulation to described at least one indoor Base Band Unit of correspondence to carry out clock alignment.
12. optical fiber as claimed in claim 11 inserts time service device, it is characterized in that, described the 3rd measurement module also comprises one the 7th branching unit, described the 3rd winding module also comprises one the 3rd combiner unit, the global location time service signal of telecommunication that the described second frequency shift keying modulation/demodulation unit is told feedback information and described the 7th branching unit transfers to described the 7th electrooptic switching element and is converted to and closes the road light signal after described the 3rd combiner unit closes the road, described the 6th light wavelength division multiplexing will close the road optical signal transmission to described the 5th light wavelength division multiplexing, described the 5th light wavelength division multiplexing will close road optical signal transmission to described the 6th photoelectric conversion unit and carry out opto-electronic conversion for closing the road signal of telecommunication, described the 5th branching unit from close the road signal of telecommunication leach feedback signal extremely the described first frequency shift keying modulation/demodulation unit carry out demodulation to obtain feedback information.
13. optical fiber as claimed in claim 12 inserts time service device, it is characterized in that, described the 3rd winding module also comprises a switch element, and described the 7th branching unit comprises a splitter and filter, and described splitter and described unit and the described filter of opening the light electrically connect successively.
14. the optical fiber with latency measurement system inserts time service device, it is used for utilizing Big Dipper location time dissemination system to carry out clock alignment at least one indoor Base Band Unit, and described optical fiber inserts time service device and comprises:
A near-end receiver module, it is used for from Big Dipper location time service signal of telecommunication of outside reception and carries out electric light being converted to the time service light signal;
At least one far-end receiver module, it is used for receiving described time service light signal and being the time service signal of telecommunication through opto-electronic conversion from described near-end receiver module through optical fiber;
A latency measurement system, it is used to measure the optical-fiber time-delay between described local module and corresponding described at least one far-end receiver module and the optical-fiber time-delay that is calculated is transferred to corresponding described at least one indoor Base Band Unit to carry out clock alignment through described at least one far-end receiver module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110150143.7A CN102227099B (en) | 2011-06-03 | 2011-06-03 | Fiber access time service apparatus with time delay measuring system |
| CN201410856508.1A CN104767583A (en) | 2011-06-03 | 2011-06-03 | Optical fiber access timing device with time-delay measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110150143.7A CN102227099B (en) | 2011-06-03 | 2011-06-03 | Fiber access time service apparatus with time delay measuring system |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410856508.1A Division CN104767583A (en) | 2011-06-03 | 2011-06-03 | Optical fiber access timing device with time-delay measuring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102227099A true CN102227099A (en) | 2011-10-26 |
| CN102227099B CN102227099B (en) | 2015-01-14 |
Family
ID=44808058
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410856508.1A Pending CN104767583A (en) | 2011-06-03 | 2011-06-03 | Optical fiber access timing device with time-delay measuring system |
| CN201110150143.7A Expired - Fee Related CN102227099B (en) | 2011-06-03 | 2011-06-03 | Fiber access time service apparatus with time delay measuring system |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410856508.1A Pending CN104767583A (en) | 2011-06-03 | 2011-06-03 | Optical fiber access timing device with time-delay measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104767583A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660330A (en) * | 2014-12-31 | 2015-05-27 | 武汉盛华微***技术股份有限公司 | Optical fiber access timing device with time delay measurement system |
| CN105227376A (en) * | 2015-10-27 | 2016-01-06 | 上海斐讯数据通信技术有限公司 | The method and system that in SPI long haul communication transmission, timing prolongs |
| CN106375014A (en) * | 2015-07-22 | 2017-02-01 | 中兴通讯股份有限公司 | BBU-RRU time-delay setting method and apparatus |
| CN113075699A (en) * | 2021-03-23 | 2021-07-06 | 广东工业大学 | 5G gateway multi-mode composite high-precision time service method and system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111367161A (en) * | 2020-04-07 | 2020-07-03 | 中国地震局地震预测研究所 | Remote time service system of observation instrument |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888695A (en) * | 2009-05-12 | 2010-11-17 | 大唐移动通信设备有限公司 | Time service method, system and device of base station |
| WO2010148690A1 (en) * | 2009-12-10 | 2010-12-29 | 中兴通讯股份有限公司 | Method for synchronizing the clock of a base transceiver station and network thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100532299B1 (en) * | 2003-01-30 | 2005-11-29 | 삼성전자주식회사 | Apparatus for measuring and compensating delay between remote base station and main base station inter-connected by optic cable |
| CN1330118C (en) * | 2004-02-23 | 2007-08-01 | 华为技术有限公司 | Distributed base stations and data interactive method |
| CN2836382Y (en) * | 2005-09-09 | 2006-11-08 | 华为技术有限公司 | Baseband unit of distributed base station |
| CN101251587A (en) * | 2008-02-28 | 2008-08-27 | 江苏北斗科技有限公司 | Satellite navigation system and GPS bimodule time service device |
| CN102026226A (en) * | 2010-11-29 | 2011-04-20 | 武汉盛华微***技术股份有限公司 | Monitoring system and monitoring method of wireless signal optical fiber access device |
-
2011
- 2011-06-03 CN CN201410856508.1A patent/CN104767583A/en active Pending
- 2011-06-03 CN CN201110150143.7A patent/CN102227099B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888695A (en) * | 2009-05-12 | 2010-11-17 | 大唐移动通信设备有限公司 | Time service method, system and device of base station |
| WO2010148690A1 (en) * | 2009-12-10 | 2010-12-29 | 中兴通讯股份有限公司 | Method for synchronizing the clock of a base transceiver station and network thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660330A (en) * | 2014-12-31 | 2015-05-27 | 武汉盛华微***技术股份有限公司 | Optical fiber access timing device with time delay measurement system |
| CN106375014A (en) * | 2015-07-22 | 2017-02-01 | 中兴通讯股份有限公司 | BBU-RRU time-delay setting method and apparatus |
| CN105227376A (en) * | 2015-10-27 | 2016-01-06 | 上海斐讯数据通信技术有限公司 | The method and system that in SPI long haul communication transmission, timing prolongs |
| CN105227376B (en) * | 2015-10-27 | 2018-03-30 | 上海斐讯数据通信技术有限公司 | The method and system that timing prolongs in SPI long haul communications transmission |
| CN113075699A (en) * | 2021-03-23 | 2021-07-06 | 广东工业大学 | 5G gateway multi-mode composite high-precision time service method and system |
| CN113075699B (en) * | 2021-03-23 | 2023-08-08 | 广东工业大学 | Multi-mode composite high-precision time service method and system for 5G gateway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102227099B (en) | 2015-01-14 |
| CN104767583A (en) | 2015-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7962042B2 (en) | Method and system for delivering broadband services over an ultrawide band radio system integrated with a passive optical network | |
| JP4256804B2 (en) | Multi antenna system | |
| CN102227099B (en) | Fiber access time service apparatus with time delay measuring system | |
| CN104953947A (en) | Monitoring system for photovoltaic power generation and communication method therefor | |
| CN102221816B (en) | Satellite time serving all-in-one machine and time serving method thereof | |
| CN207869090U (en) | Wireless communication system of multichannel unmanned aerial vehicle | |
| CN104660330A (en) | Optical fiber access timing device with time delay measurement system | |
| CN105119671A (en) | Multichannel scattering parameter testing circuit and method for complex modulation and phase coherence system | |
| CN110392452A (en) | Multi-standard base station system and data processing method | |
| CN201654495U (en) | Satellite time transfer integrative machine | |
| CN101166064A (en) | Conversion device for RF remote distribution system in communication system | |
| CN103957536A (en) | Wireless access network system based on C-RAN | |
| CN101944956B (en) | Fiber access system of wireless signal based on tri-network integration | |
| CN206756967U (en) | A kind of distributed intelligence substation relay protection test device | |
| CN202794510U (en) | Expandable digital array radar antenna measuring and control device | |
| CN106160866A (en) | Optical fiber repeater branch transmission method and by-passing type optical fiber repeater | |
| CN201114049Y (en) | Digital remote system and its terminal time-delay unit | |
| WO2020026817A1 (en) | Time synchronization system and time synchronization method | |
| CN104485998A (en) | Calibration device and method for response time of optical communication transmitting-receiving component | |
| JP4952395B2 (en) | Local signal relay system, relay device, and local signal relay method | |
| CN103944633B (en) | TD-LTE MIMO indoor radio signal profile fiber transmission link fault detection module and method | |
| CN102750817A (en) | Power data communication transmission system and method | |
| RU2689771C1 (en) | Mobile hardware multichannel radio relay communication | |
| CN201766684U (en) | Multi-channel digital-analog signal variable wavelength optical transmission device | |
| CN203644204U (en) | FTTX intelligent electricity consumption centralized remote collection optical module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Yang Chunhua Document name: Notification of Patent Invention Entering into Substantive Examination Stage |
|
| DD01 | Delivery of document by public notice |
Addressee: Yang Chunhua Document name: the First Notification of an Office Action |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170123 Address after: 430073 Hubei city of Wuhan Province, East Lake New Technology Development Zone, Road No. 1 Optics Valley Software Park Building 5 layer A3 Patentee after: Wuhan Sheng potential photoelectric Agel Ecommerce Ltd Address before: China Science and Technology Industrial Park, East Lake Development Zone 430074 Hubei city of Wuhan province 3-3 Building 2 floor Patentee before: Wuhan Winningchina Microsystem Technologies Co., Ltd. |
|
| DD01 | Delivery of document by public notice |
Addressee: Wuhan Winningchina Microsystem Technologies Co., Ltd. Document name: Notification of Passing Examination on Formalities |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Wuhan Sheng potential photoelectric Agel Ecommerce Ltd Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Wuhan Sheng potential photoelectric Agel Ecommerce Ltd Document name: Notification of Termination of Patent Right |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20180603 |