CN106253985B - Common-frequency time division switching fiber optic repeater working method - Google Patents
Common-frequency time division switching fiber optic repeater working method Download PDFInfo
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- CN106253985B CN106253985B CN201610646522.8A CN201610646522A CN106253985B CN 106253985 B CN106253985 B CN 106253985B CN 201610646522 A CN201610646522 A CN 201610646522A CN 106253985 B CN106253985 B CN 106253985B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/005—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by adjustment in the receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optical Communication System (AREA)
Abstract
The common-frequency time division switching fiber optic repeater working method that a kind of transmission control processor, time division duplex device, delayer by optical fiber repeater proposed by the invention is realized, optic-fiber repeater system is set steadily to provide same frequency relay transmission service for wireless communication user, and higher covering index, interference are small and the characteristics of suitable for a variety of overlay environments.
Description
Technical field
The present invention is wireless communications relay transmission technology, and the wireless communications relay for being suitable for conventional wireless communication system passes
It is defeated, belong to wireless communication technology field.
Background technology
In at present using optical fiber direct amplification relaying technique, when needing adjacent optical fiber repeater forwarded with frequency, need
The reasonable of system is covered by antenna feeder to be arranged to avoid the influence of feedback self-excitation, done so there are two there are problems that：When
Adjustment difficulty is larger, second is that since to be susceptible to covering index low or adjust for the complexity and variation of environment and device parameter
There is self-excitation again in system；But optical fiber repeater in practical applications, is needed to provide in the same frequency forwarding of stable and high covering index
After service system；It is relatively the patent No. 2009100582891, common-frequency time division translating turns optical fiber direct amplification in correlation technique
It stands working method, where it is proposed the technical solutions solved these problems, but the technical solution is needed there are incomplete defect
It is carried out to improve and can just give practical application.
Invention content
In view of the foregoing, the purpose of the present invention is to provide a kind of common-frequency time division transfer fiber optic repeater working method,
So that optical fiber direct amplification relay system is capable of providing the same frequency wireless communications relay transmission service of stable and high covering index, and have
Interfere it is small and suitable for a variety of overlay environment conditions the characteristics of.
In order to achieve the above objectives, the present invention introduces a kind of common-frequency time division switching fiber optic repeater working method, includes to pass
Defeated control processor, time division duplex device, delayer, the transmission control processor includes identification code, the carrier frequency transmitted
Include identification code in signal, it is characterised in that adjacent fiber repeater is unified under the control of transmitting-receiving synchronic command to enter reception
Or transmission time slot, and following working methods are used under the control of transmission control processor：
(1) common-frequency time division switching optical fiber repeater sends synchronizing information code first in its wireless transmission time slot, is emitting
Time slot sends end mark code before terminating, and includes the address code of this common-frequency time division switching optical fiber repeater in data transmission；
(2) when common-frequency time division transfer optical fiber repeater after receiving CF signal in receiving time slot, transmission control process
Device is decoded and is judged to the identification code in the CF signal, when the identification code for including in CF signal and transmission control process
When identification code in device is consistent, this common-frequency time division switching optical fiber repeater is being received by the load received in time slot by delayer
Frequency signal is delayed and is stored, by this common-frequency time division switching optical fiber repeater by the carrier frequency after the delay in transmission time slot
Signal is launched by antenna, and under the control of transmission control processor by optical fiber transport channel by the CF signal and
Transmitting synchronizing signal is converted to optical signal and is sent by fibre circuit；Under the coordination of transmitting-receiving synchronic command, common-frequency time division
Optical fiber repeater transfer in the CF signal transmission time slot of our station and the transmission time slot of adjacent common-frequency time division switching optical fiber repeater
In, radio carrier frequency receives circuit not reception carrier signal；
(3) pass through optical fiber when common-frequency time division switching optical fiber repeater receives adjacent common-frequency time division switching optical fiber repeater
After the optical signal that circuit is sent, be converted into corresponding CF signal and transmitting-receiving synchronic command, and to the CF signal into
Line delay compensates, and then under the coordination of transmitting-receiving synchronic command, is launched by antenna in transmission time slot.
The working principle and beneficial effect of the present invention
Common-frequency time division switching optical fiber repeater sends synchronizing information code first in its wireless transmission time slot, in transmission time slot
End mark code is sent before middle end, includes the address code of this common-frequency time division switching optical fiber repeater in data transmission；This
Sample can provide synchronizing information for mobile terminal, constitute normal transceiver channel；When common-frequency time division switching optical fiber repeater is receiving
After receiving CF signal in time slot, transmission control processor is decoded and is judged to the identification code in the CF signal, this
Sample can provide relaying right judgement for the mobile terminal authorized, and unrelated mobile terminal is avoided to generate interference, optical fiber repeater
It is unified under the control of transmitting-receiving synchronic command to enter reception or transmission time slot；When an optical fiber repeater receives in receiving time slot
When to CF signal, which is stored and be delayed, and the CF signal and transmitting-receiving synchronic command are converted into light
Signal is sent to other optical fiber repeaters by fibre circuit, and the CF signal at this moment forwarded by optical fiber, can be by prolonging
When the CF signal that handles, can also be the CF signal without delay process, receive the optical fiber repeater of optical signal by light
Signal is converted into corresponding CF signal and transmitting-receiving synchronic command, and carries out compensation of delay to the CF signal so that total prolongs
The delay data being arranged in the optical fiber repeater of Shi Yuyuan reception carrier signals is equal or close, then in transmitting-receiving synchronic command
Coordination control under, the optical fiber repeater of former reception carrier signal and transmit to obtain the optical fiber repeater of CF signal by optical fiber
It is unified in the CF signal for sending former storage in sending time slots and being delayed, and in this sending time slots, optical fiber repeater
Radio carrier frequency receives circuit and does not receive the CF signal；Transmission is forwarded to the same frequency of CF signal in this way, being achieved that, was both ensured
Covering signal strength, also avoids the transmitting-receiving self-excitation feedback between optical fiber repeater, ensure that the stability of relay transmission.
Description of the drawings
Fig. 1 is the grid composition figure of one embodiment of the invention.
Fig. 2 is the main working process of the common-frequency time division switching optical fiber repeater of one embodiment of the invention and receives carrier frequency
Main working process figure when signal.
Fig. 3 is the groundwork stream when common-frequency time division switching optical fiber repeater of one embodiment of the invention receives optical signal
Cheng Tu.
Specific implementation mode
Illustrate the embodiment of the present invention by taking attached drawing as an example below.
Fig. 1 shows the grid composition figures for going out an example application present invention, wherein：
(1), (2) are common-frequency time division switching optical fiber repeater；(3) it is fibre circuit.
Multiple common-frequency time divisions switching optical fiber repeater is separately positioned on the area for needing to relay covering by shown in attached drawing 1,
And be connected using fibre circuit, that is, the system for completing the present invention is constituted.
Fig. 2 is the main working process of the common-frequency time division switching optical fiber repeater of one embodiment of the invention and receives carrier frequency
Main working process figure when signal, wherein：
Carrier frequency is closed before entering transmission time slot to receive, and the CF signal with synchronous code is sent in transmission time slot,
Include the address code of the machine in the CF signal of transmission, is sent in transmission time slot in upper reception time slot and store delay
CF signal, before transmission time slot terminates send with end mark code CF signal；When common-frequency time division switching optical fiber is straight
It puts after station receives CF signal, transmission control processor is decoded and judged to the identification code in the CF signal, and load is worked as
When the identification code for including in frequency signal is consistent with the identification code in transmission control processor, this common-frequency time division is turned by delayer
It connects the CF signal that optical fiber repeater receives in reception time slot to be delayed and stored, passes through this common-frequency time division switching optical fiber
Repeater is launched the CF signal after the delay by antenna in transmission time slot, and in the control of transmission control processor
System it is lower by optical fiber transport channel by after the delay CF signal and emit synchronizing signal and be converted to optical signal and pass through optical fiber cable
Road is sent；Under the coordination of transmitting-receiving synchronic command, common-frequency time division switching optical fiber repeater emits in the CF signal of our station
In the transmission time slot of time slot and adjacent common-frequency time division switching optical fiber repeater, carrier frequency receives circuit and does not receive and do not pass through optical fiber cable
The adjacent common-frequency time division switching optical fiber repeater of road direction forwards the CF signal in the time slot；
Main working process when Fig. 3 is the common-frequency time division switching optical fiber repeater reception optical signal of one embodiment of the invention
Figure, wherein：Pass through optical fiber cable when common-frequency time division switching optical fiber repeater receives adjacent common-frequency time division switching optical fiber repeater
After the optical signal that road is sent, it is converted into corresponding CF signal and transmitting-receiving synchronic command, and be delayed according to transmission line
Parameter carries out compensation of delay to the CF signal and carries out compensation of delay to the CF signal so that total delay and former reception carrier
The delay data being arranged in the optical fiber repeater of signal is equal or close, then under the coordination of transmitting-receiving synchronic command, is sending out
It penetrates in time slot and is launched by antenna.
The transmission control processor of common-frequency time division switching optical fiber repeater is programmed and set according to above-mentioned working method
Set the implementation that the present invention can be completed in relevant work parameter.
It is also possible to be the work(for forwarding the CF signal of adjacent common-frequency time division switching optical fiber repeater in setting
When rate, transmission power adjustment is preventing the adjacent common-frequency time division optical fiber repeater from below the level value that effectively receives；This
Sample, which is done, can reduce this common-frequency time division switching optical fiber repeater in reception carrier signal, because adjacent common-frequency time division switching optical fiber is straight
Self-excitation caused by putting the forwarding feedback of the same frequency CF signal at station, improves the stability of system.
It is also possible to be the work(for forwarding the CF signal of adjacent common-frequency time division switching optical fiber repeater in setting
When rate, it is arranged automatically using the method wirelessly with the adjustment of the closed loop of optical fiber transmission channel；I.e.：It is adjacent with frequency in setting forwarding
When the power of the CF signal of time-division switching optical fiber repeater, start a certain common-frequency time division switching optical fiber repeater transmitting carrier frequency letter
Number, the CF signal level parameters received are carried out judgement and show that power adjustment refers to by adjacent common-frequency time division switching optical fiber repeater
It enables, and the power adjustment instruction is transferred to the common-frequency time division switching optical fiber of original transmitted CF signal by optical fiber transport channel
Repeater, the station change transmission power according to the power adjustment instruction received, the optical fiber direct amplification until adjacent common-frequency time division is transferred
The CF signal level parameters that station receives are less than effective reception value without emitting self-excitation phenomena；It in this way can effectively, fast
Ground reaches the possibility for reducing feedback self-excitation.
It is also possible to be that common-frequency time division transfers optical fiber repeater under the coordination of transmitting-receiving synchronic command, with frequency
The load that time-division switching optical fiber repeater emits the adjacent common-frequency time division switching optical fiber repeater received in transmission time slot
Frequency signal is delayed without storage, which is not carried out our station CF signal forwarding, also not converted the CF signal
It is sent to adjacent common-frequency time division switching optical fiber repeater for optical signal；I.e.：It is being sent out in adjacent common-frequency time division switching optical fiber repeater
When penetrating progress CF signal forwarding in time slot, the common-frequency time division switching optical fiber repeater of primary reception CF signal is to adjacent same frequency
The forwarding CF signal of time-division switching optical fiber repeater no longer carries out storage delay and CF signal forwarding, is also no longer converted
It is sent to other adjacent common-frequency time divisions switching optical fiber repeaters for optical signal；Feedback self-excitation can be avoided in this way, improve system
Stability.
It is also possible to be that common-frequency time division switching optical fiber repeater receives other common-frequency time divisions switching optical fiber direct amplification
When optical signal that station is sent, being converted by CF signal, the load of adjacent common-frequency time division switching optical fiber repeater transmitting is not received
Frequency signal can avoid feedback self-excitation in this way, improve the stability of system.
It is also possible to be that common-frequency time division switching optical fiber repeater is provided with GPS system, common-frequency time division switching light
The time of the transmitting-receiving synchronic command of fine repeater and synchronizing information parameter are provided by GPS system, such common-frequency time division switching optical fiber
Repeater can readily obtain high-precision synchronizing information, improve the stability of system.
A kind of transmission control processor, time division duplex device, delayer by optical fiber repeater proposed by the invention is real
Existing switching common-frequency time division switching fiber optic repeater working method, it is that wireless communication is used to enable optic-fiber repeater system steadily
Family is provided with frequency relay transmission service, and higher covering index, interference are small and the characteristics of be suitable for a variety of overlay environments.
Claims (6)
- The fiber optic repeater working method 1. a kind of common-frequency time division is transferred includes transmission control processor, time division duplex device, delay Device includes identification code in the transmission control processor, includes identification code in the CF signal transmitted, feature exists It is unified under control of the adjacent fiber repeater in transmitting-receiving synchronic command to enter reception or transmission time slot, and in transmission control process Following working methods are used under the control of device：(1) common-frequency time division switching optical fiber repeater sends synchronizing information code first in its wireless transmission time slot, in transmission time slot End mark code is sent before terminating, and includes the address code of this common-frequency time division switching optical fiber repeater in data transmission；(2) when common-frequency time division transfer optical fiber repeater after receiving CF signal in receiving time slot, transmission control processor pair Identification code in the CF signal is decoded and is judged；When in the identification code and transmission control processor for including in CF signal Identification code it is consistent when, this common-frequency time division optical fiber repeater of transferring is believed receiving the carrier frequency that receives in time slot by delayer Number be delayed and stored, by this common-frequency time division transfer optical fiber repeater in transmission time slot by the CF signal after the delay Launched by antenna, and under the control of transmission control processor by optical fiber transport channel by the CF signal and transmitting Synchronizing signal is converted to optical signal and is sent by fibre circuit；Under the coordination of transmitting-receiving synchronic command, common-frequency time division switching Optical fiber repeater is in the transmission time slot that the CF signal transmission time slot of our station and adjacent common-frequency time division transfer optical fiber repeater, nothing Line carrier frequency receives circuit not reception carrier signal；(3) pass through fibre circuit when common-frequency time division switching optical fiber repeater receives adjacent common-frequency time division switching optical fiber repeater After the optical signal sent, it is converted into corresponding CF signal and transmitting-receiving synchronic command, and prolong to the CF signal When compensate, then transmitting-receiving synchronic command coordination under, launched by antenna in transmission time slot.
- The fiber optic repeater working method 2. common-frequency time division as described in claim 1 is transferred, it is characterised in that common-frequency time division is transferred When optical fiber repeater forwards the power of the CF signal of adjacent common-frequency time division switching optical fiber repeater in setting, transmission power tune It is whole to prevent the adjacent common-frequency time division optical fiber repeater from below the level value that effectively receives.
- The fiber optic repeater working method 3. common-frequency time division as claimed in claim 2 is transferred, it is characterised in that common-frequency time division is transferred When optical fiber repeater forwards the transmission power of the CF signal of adjacent common-frequency time division switching optical fiber repeater in setting, using wireless The carrier frequency that adjacent common-frequency time division switching optical fiber repeater is arranged automatically with the method that the closed loop of optical fiber transmission channel adjusts is believed Number transmission power.
- The fiber optic repeater working method 4. common-frequency time division as described in claim 1 is transferred, it is characterised in that common-frequency time division is transferred For optical fiber repeater under the coordination of transmitting-receiving synchronic command, common-frequency time division transfers optical fiber repeater to the adjacent common-frequency time division that receives The CF signal that switching optical fiber repeater is emitted in transmission time slot is delayed without storage, which is not carried out this CF signal of standing forwards, and also the CF signal is not converted to optical signal sends to adjacent common-frequency time division switching optical fiber repeater.
- The fiber optic repeater working method 5. common-frequency time division as described in claim 1 or 4 is transferred, it is characterised in that common-frequency time division turns When connecing optical fiber repeater and receiving that other common-frequency time divisions switching optical fiber repeater the is sent, optical signal converted by CF signal, The CF signal of adjacent common-frequency time division switching optical fiber repeater transmitting is not received.
- The fiber optic repeater working method 6. common-frequency time division as claimed in claim 1 or 2 or 3 or 4 is transferred, it is characterised in that with frequency Time-division switching optical fiber repeater is provided with GPS system, common-frequency time division transfer optical fiber repeater transmitting-receiving synchronic command time and Synchronizing information parameter is provided by GPS system.
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| CN201610646522.8A CN106253985B (en) | 2016-08-09 | 2016-08-09 | Common-frequency time division switching fiber optic repeater working method |
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| CN106253985B true CN106253985B (en) | 2018-09-28 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465697A (en) * | 2009-01-04 | 2009-06-24 | 耿直 | Optical fiber direct amplification and frequency conversion repeater and working method |
| CN101483485A (en) * | 2009-02-06 | 2009-07-15 | 耿直 | Working method for common-frequency time division translating optical fiber straight-forward station |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006001229A1 (en) * | 2004-06-23 | 2006-01-05 | Nippon Telegraph And Telephone Corporation | Linear repeater and optical fiber communication system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465697A (en) * | 2009-01-04 | 2009-06-24 | 耿直 | Optical fiber direct amplification and frequency conversion repeater and working method |
| CN101483485A (en) * | 2009-02-06 | 2009-07-15 | 耿直 | Working method for common-frequency time division translating optical fiber straight-forward station |
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Effective date of registration: 20200113 Address after: 510080 Room 601, no.6-2, Dayuan wuhe'er street, Taihe Town, Baiyun District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Zhengtian Communication Co., Ltd Address before: Zhejiang Huatang Jinting Town Village 312458 city of Shaoxing province Shengzhou City Xiao Kang group of door of No. 111 Patentee before: Shengzhou City magic Network Technology Co. Ltd. |