CN210274104U - 5G forwarding equipment based on semi-passive WDM technology - Google Patents
5G forwarding equipment based on semi-passive WDM technology Download PDFInfo
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Abstract
The utility model discloses a 5G fronthaul equipment based on semi-passive WDM technique. In the existing active wavelength division multiplexing scheme, the optical cross connecting box is difficult to get electricity, and the cost is high. The utility model discloses an active frame formula equipment of local side, main optical fiber, reserve optic fibre and the passive card formula equipment of far-end. The remote passive card device includes a passive wavelength division device and a first optical splitter. The local side active machine frame type equipment comprises an interface module, a conversion module, a convergence module, a monitoring module, an optical time domain reflection module and a protection module. The utility model discloses a semi-passive WDM mode adopts active WDM scheme, antenna site side to adopt passive WDM scheme in baseband site side promptly, when realizing the control, has removed the problem that the electric difficulty was got to the light distributing box from. The utility model discloses a wavelength division multiplexing transmission form of main optical fiber + reserve optic fibre has alleviated the condition that optic fibre resource is in short supply.
Description
Technical Field
The utility model belongs to the technical field of the optical communication based on WDM (Wavelength Division Multiplexing) technique, concretely relates to equipment passes before 5G based on semi-passive WDM technique.
Background
Along with the development of economy and the improvement of the daily living standard of people, various production and living requirements such as 3D ultra-high-definition videos, large-scale Internet of things application, unmanned driving, telemedicine, industrial automation and the like are gradually provided, and at the moment, the 5G network with the advantages of large bandwidth, universal interconnection, low time delay, high reliable connection and the like is absolutely proposed.
At present, 5G technology is more in the experimental stage, and is expected to be put into commercialization after 2020, and with the progress of commercialization, the 5G market will have a large increase. The global 5G and 5G related Network Infrastructure markets, including 5G RAN (Radio Access Network), 5G NG core, NFVI (Network function virtualization Infrastructure) routing and fiber backhaul, are expected to grow to $ 260 billion in 2022.
According to the 3GPP 5G-RAN functional segmentation, 5G is reconstructed into an AAU (Active Antenna Unit), DU (Distributed Unit), CU (Central Unit) multilevel architecture. The 5G bearing network consists of three parts of forward transmission, intermediate transmission and return transmission, wherein the forward transmission is mainly responsible for network transmission between an antenna site AAU and a baseband site DU/CU. The patent of the utility model mainly relates to the relevant product and the application of 5G fronthaul.
In order to meet the requirements of a 5G forward transmission Network in different application scenarios and different construction stages, several 5G forward transmission technical schemes such as an Optical fiber direct drive scheme, a passive wavelength division multiplexing scheme, an active system scheme and the like are mainly used at the present stage, wherein the active system scheme also includes an active wavelength division multiplexing and active OTN (Optical Transport Network) scheme.
The optical fiber direct drive scheme is suitable for areas within 10km and rich in optical fiber resources, and has the characteristics of convenience and rapidness in opening, no need of replacing AAU and DU equipment modules, and low module cost. The passive Wavelength division Multiplexing scheme is suitable for an optical fiber arrival scene within 10km, a simple double star networking or bus networking is used, the tail end is passive, CWDM (Coarse Wavelength division Multiplexing), DWDM (Dense Wavelength division Multiplexing) and other systems are adopted, and the scheme is characterized in that a color light module is positioned on AAU (architecture automation unit) and DU (data channel unit) equipment, and a passive multiplexer-demultiplexer multiplexes multiple wavelengths for transmission so as to save optical fiber resources. The active wavelength division multiplexing scheme is characterized in that active WDM equipment is configured in an AAU site side optical cross-connecting box and a DU machine room, a client side of the equipment is in butt joint with the AAU equipment and the DU equipment by adopting white light modules, a line side adopts a color light module, color light signals of each service interface and each management interface are converged by a CWDM or DWDM module, and then the color light signals are transmitted through 1-core or 2-core or 4-core optical cables. The active OTN scheme is that OTN equipment is configured in an AAU site side optical cross-connecting box and a DU machine room, a client side of the equipment is in butt joint with the AAU equipment and the DU equipment by adopting a white light module, and a front transmission signal at a line side is transmitted by using the white light module through a 1-core or 2-core optical cable. The scheme of the active system has the characteristics of reliable line, 1+1 or 1:1 protection of the optical fiber at the line side, effective monitoring of the running condition of each device in the line and convenient and rapid construction.
Each of the above solutions has its advantages, but also has its disadvantages. The optical fiber direct-drive scheme has large demand of optical fiber resources and narrow application range, especially under the condition of well-jet type increase of the current network service demand, the optical fiber resources in most regions are caught, the construction period of re-laying the optical cable is long, the cost is high, the optical cable is influenced by the region environment, policies and the like, and meanwhile, important services are not effectively protected or the protection cost is high. The passive wavelength division multiplexing scheme has limited transmission distance, does not effectively protect important services, and cannot monitor a passive module. In the active wavelength division multiplexing scheme, the optical cross-connecting box is difficult to get electricity, and the cost is high. The technical threshold of the active OTN scheme is high, the cost is very high, the maintenance is complex, and the electricity is difficult to get by the optical cross connecting cabinet.
Disclosure of Invention
The utility model aims to provide a to the not enough of current 5G fronthaul network, provide a 5G fronthaul equipment based on semi-passive WDM technique, improved the operator and alleviated optical fiber resource shortage, reduce cost, the possibility of improving the performance to 5G fronthaul business to through the mode of double link backup protection, improved the security of business.
The utility model discloses an active frame formula equipment of local side, main optical fiber, reserve optic fibre and the passive card formula equipment of far-end. The far-end passive card type device comprises a passive wavelength division device and a first optical splitter. The trunk interface of the first optical splitter is connected with the optical interface of the passive wavelength division device. Two branch interfaces of the first optical splitter are respectively connected with one ends of the main optical fiber and the spare optical fiber.
The local side active machine frame type equipment comprises an interface module, a conversion module, a convergence module, a monitoring module, an optical time domain reflection module and a protection module. The optical time domain reflection module comprises a laser diode, a first transimpedance amplifier, a first AD conversion chip, a first avalanche photodiode and a circulator. The first optical interface of the circulator is connected with a laser emission interface of the laser diode, the second optical interface is connected with a photon input interface of the first avalanche photodiode, and the third interface is an external optical interface of the optical time domain reflection module. An electrical signal output interface of the first avalanche photodiode is connected with an input interface of the first transimpedance amplifier. And the output interface of the first transimpedance amplifier is connected with the analog signal input interface of the first AD conversion chip. And a digital output interface of the first AD conversion chip is used as an output interface of the optical time domain reflection module. And the third optical interface of the circulator is an optical signal input and output interface of the optical time domain reflection module.
The convergence module is provided with 2n sub-wave ports and 1 public port. And 2n is the wave number of the communication optical signal. The protection module adopts an optical switch. Two optical interfaces in the first interface group of the optical switch are respectively connected with the optical signal input and output interface of the optical time domain reflection module and the common end of the convergence module; two optical interfaces in the second interface group of the optical switch are respectively connected with the other ends of the main optical fiber and the spare optical fiber. The conversion module comprises n color light modules. The external transmitting interface and the external receiving interface of the n colored light modules are respectively connected with the 2n sub-wave ports of the convergence module. The interface module comprises n white lasers. The internal interfaces of the n white light lasers are electrically connected with the internal interfaces of the n color light modules in the conversion module.
The monitoring module comprises 2n +1 optical fiber detection units. The optical fiber detection unit comprises a detection beam splitter, a second avalanche diode and a second transimpedance amplifier. The detection optical splitters in the first 2n optical fiber detection units are respectively connected between the external transmitting interface and the external receiving interface of the n colored light modules and the 2n sub-wave ports of the convergence module. And the 2n +1 optical fiber detection unit detects that the optical splitter is accessed to the standby optical fiber.
And a branch interface led out by the detection light splitter is connected with a photon input interface of the second avalanche diode. And an electric signal output interface of the second avalanche diode is connected with an input interface of the second transimpedance amplifier. And the output interface of the second transimpedance amplifier serves as the output interface of the optical fiber detection unit.
Preferably, the local side active machine frame type device further comprises a management module. The management module comprises a first control chip, a second control chip and an FPGA. The second control chip communicates with the FPGA through an SPI interface. The FPGA communicates with the first control chip through an SPI interface. The second control chip is communicated with the network management server through the Ethernet. And the FPGA is connected with an output interface of the optical time domain reflection module through a GPIO parallel port. The I2C interfaces of the convergence module, the color light modules and the white light lasers are all connected with the FPGA. The control interface of the optical switch is connected with the first control chip. And output interfaces of second transimpedance amplifiers in the 2n +1 optical fiber detection units are connected with the AD conversion interface of the first control chip. And the output interface of the optical time domain reflection module is connected with the second control chip.
Preferably, the first control chip adopts a single chip microcomputer with the model number of STM32F 107. The model of the second control chip is MT 7620A. The model number of the FPGA is EP4CE 6.
Preferably, a clock data recovery module is arranged between the conversion module and the interface module.
Preferably, the local side active machine frame type equipment is connected with the DU/CU side equipment through an optical fiber. The far-end passive card type equipment is connected with the AAU side equipment through optical fibers.
Preferably, the local-side active frame-type device further comprises a power module. The power supply module is provided with a switching power supply chip with the model number of MP1484 EN. The power supply module supplies power to the interface module, the conversion module, the management module, the monitoring module and the protection module.
Preferably, the optical switch is a 2X2 fully functional optical switch.
Preferably, the color light module adopts a 25G color light laser packaged by SFP 28. The white laser adopts a 25G white laser packaged by SFP 28.
Preferably, the first light splitter is a 50% to 50% light splitter. The detection spectroscope is 1% to 99% of unequal spectroscopes;
preferably, the first transimpedance amplifier and the second transimpedance amplifier are both of the type OPA 857. The model of the first AD conversion chip is ADS 4129.
The utility model has the advantages that:
1. the utility model discloses a semi-passive WDM mode adopts active WDM scheme, antenna site side (AAU side) to adopt passive WDM scheme in baseband site side (DU CU side) promptly, when realizing the control, has removed the problem that the electric difficulty was got to the light distributing box from.
2. The utility model provides an active frame formula equipment of office end adopts the white light module, and the passive card formula equipment of distal end adopts the various light module, through the wavelength division multiplexing transmission form of main optical fiber + reserve optic fibre, has alleviated the condition that optic fibre resource is in short supply, has shortened construction cycle to have 1+1 protect function, the cost is lower, and transmission distance satisfies current majority and uses. Specifically, the utility model discloses can be used for the scene of arriving at the station of optic fibre within 10km, simple two star type network deployment.
3. The utility model discloses reasonable reduction the operation cost under the condition that satisfies current majority application demand to the security of business has been guaranteed to the mode through double link backup protection.
4. The utility model discloses a whole supervision of each circuit operational aspect, it is more convenient to maintain.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a system block diagram of the active machine frame device of the central office end of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1
As shown in fig. 1, a 5G forwarding device based on a semi-passive WDM technology includes a local-end active frame device i, a main optical fiber, a spare optical fiber, and a remote passive card device ii. The remote passive card device II comprises a passive wavelength division device and a first optical splitter. The first optical splitter is 50 percent to 50 percent and is used for realizing 1+1 protection of the line. The trunk interface of the first optical splitter is connected with the optical interface of the passive wavelength division device. The passive wavelength division device adopts the existing passive local side device, which is not described herein. Two branch interfaces of the first optical splitter are respectively connected with one ends of the main optical fiber and the spare optical fiber. And the local side active machine frame type equipment I is connected with DU/CU side equipment III in the 5G network equipment through optical fibers. And the remote passive card type equipment II is connected with the AAU side equipment V in the 5G network equipment through an optical fiber.
As shown in fig. 2, the local side active frame device i includes a power module 1, an interface module 2, a conversion module 3, a convergence module 4, a management module 5, a monitoring module 6, an optical time domain reflection module (OTDR), and a protection module 7.
The power module 1 is provided with a switching power chip with a model number of MP1484 EN. The power module 1 supplies power to the interface module 2, the conversion module 3, the management module 5, the monitoring module 6 and the protection module 7. The method specifically comprises the following steps: the interface module 2 is provided with 3.3V voltage; 3.3V and 2.5V voltages are provided for the conversion module 3; the management module 5 is provided with 3.3V, 2.5V and 1.2V voltages; 5V, 3.3V and 1.8V are provided for the monitoring module 6; the protection module 7 is supplied with a voltage of 5V.
The optical time domain reflection module comprises a laser diode, a first transimpedance amplifier, a first AD conversion chip, a first avalanche photodiode and a circulator. The first AD conversion chip has a model number ADs 4129. The first optical interface of the circulator is connected with a laser emission interface of the laser diode, the second optical interface is connected with a photon input interface of the first avalanche photodiode, and the third interface is an external optical interface of the optical time domain reflection module. An electrical signal output interface of the first avalanche photodiode is connected with an input interface of the first transimpedance amplifier. And the output interface of the first transimpedance amplifier is connected with the analog signal input interface of the first AD conversion chip. And a digital output interface of the first AD conversion chip is used as an output interface of the optical time domain reflection module and is connected with the management module 5. And the third optical interface of the circulator is an optical signal input and output interface of the optical time domain reflection module.
The convergence module 4 includes a WDM module (Wavelength Division Multiplexing) and is responsible for converging the multiple customer service optical signals converted by the conversion module. The convergence module 4 has 2n sub-wave ports and 1 common port. 2n is the wave number of the communication optical signal, n is equal to 3, 6 or 12.
The protection module 7 adopts an optical switch. The optical switch adopts a 2X2 fully functional optical switch. Two optical interfaces in the first interface group of the optical switch are respectively connected with the optical signal input and output interface of the optical time domain reflection module and the common end of the convergence module; two optical interfaces in the second interface group of the optical switch are respectively connected with the other ends of the main optical fiber and the spare optical fiber. In an initial state, the optical switch enables the public end of the convergence module to be connected with the main optical fiber, and the optical signal input and output interface of the optical time domain reflection module is connected with the standby optical fiber.
When the monitoring module detects that the optical signal has a fault, the public end of the convergence module can be connected with the standby optical fiber by switching the optical switch, and the optical signal in-out interface of the optical time domain reflection module is connected with the main optical fiber. The optical time domain reflection module can detect the position of a fault point of a main optical fiber; the spare fiber can avoid service interruption when the main fiber fails.
The conversion module 3 comprises n color light modules. The color light module adopts a 25G color light laser packaged by SFP28, and can be compatible with various models of factories such as Huashi, Zhongxing, Zhongke, Xuanxuan, Guanglong and the like.
The monitoring module 6 comprises 2n +1 fibre-optic detection units. The optical fiber detection unit comprises a detection beam splitter, a second avalanche diode and a second transimpedance amplifier. Detecting the number of the light splitters is 1 percent and 99 percent; the ratio of the optical signal power output by the first branch interface of the detection optical splitter to the optical signal power output by the second branch interface is 1: 99. The second transimpedance amplifier is of the type OPA 857. And the first branch interface of the detection optical splitter is connected with the photon input interface of the second avalanche diode. And an electric signal output interface of the second avalanche diode is connected with an input interface of the second transimpedance amplifier. The output interface of the second transimpedance amplifier is used as the output interface of the optical fiber detection unit and is connected with the management module 5.
The main path interface of the detection optical splitter in the first 2n optical fiber detection units is respectively connected with 2n sub-wave ports of the convergence module 4, and the second branch path interface is respectively connected with the external transmitting interface and the external receiving interface of the n color light modules. A main path interface and a second branch path interface of the detection optical splitter in the 2n +1 optical fiber detection unit are connected between the standby optical fiber and the optical switch; therefore, the optical signal transmitted on the spare optical fiber is divided into one strand and is led into the corresponding second avalanche diode, and the detection of the spare optical fiber is realized.
The interface module 2 comprises n white light lasers and is responsible for photoelectric conversion of client side services and DDM information monitoring of the interface module. The white light laser adopts a 25G white light laser packaged by SFP28, and is compatible with various models of factories such as Huashi, Zhongxing, Zhongke, Xuanxuan and Guanglong. The external optical interfaces of the n white light lasers are respectively connected with n eCPRI (enhanced common Radio Interface) interfaces of DU/CU equipment of an operator through a single-core optical fiber or two-core optical fibers; the internal interfaces of the n white light lasers are electrically connected with the internal interfaces of the n color light modules in the conversion module 3. The internal interfaces of the white light laser and the color light module are all CML (Current Mode Logic) interfaces
The management module 5 includes a first control chip, a second control chip, and an FPGA (Field-Programmable gate array). The first control chip adopts the singlechip that model STM32F 107. The model of the second control chip is MT 7620A. The model number of the FPGA is EP4CE 6. The second control chip communicates with the FPGA through an SPI interface. The FPGA communicates with the first control chip through an SPI interface. The second control chip communicates with the network management server via Ethernet (ethh). The Output interface of the FPGA and the optical time domain reflection module is connected through a GPIO (general Purpose Input/Output) parallel port;
the convergence module 4, each color light module, and I2C (Inter-Integrated Circuit) interfaces of each white light laser are all connected to the FPGA to implement communication. The control interface of the optical switch is connected with the first control chip. And the output interfaces of the second transimpedance amplifiers in the n +1 optical fiber detection units are respectively connected with the n +1 AD conversion interfaces of the first control chip. And the output interface of the optical time domain reflection module is connected with the second control chip.
The first control chip is matched with the second control chip to form a central processing unit. The central processing unit processes the network management data. The second control chip processes the network management data from the network management server and the relevant data of the whole system, including the running states of the system power supply and the fan. The first control chip processes the network management data of each module, including the line state, the interface DDM information and the protection mode. The second control chip is matched with the FPGA to realize communication with the network management server and the monitoring module 6. The FPGA has a configuration function and is responsible for configuring the working mode of a system fan, the alarm threshold value of a power supply, the working mode of a protection module and the like, and particularly, the rotating speed of the system fan is controlled through a GPIO (Pulse-Width Modulation) interface, the voltage, current, temperature alarm threshold value, the shielding mode and the like of the system power supply are configured through an I2C interface, and the optical line working mode is configured through the GPIO.
As a preferred technical solution, a Clock Data recovery module (CDR) is disposed between the conversion module 3 and the interface module 2. The clock data recovery module can perform data recovery on the signal output by the conversion module 3 under the conditions of long communication distance and poor line quality.
As a preferred scheme, a wavelength conversion disk, a service convergence disk, a master control disk, a power disk and a fan disk are arranged in the local side active machine frame device i. The power module 1 is commonly carried by all the functional disks (namely, power circuits with different output voltages are arranged on the corresponding disks); the interface module 2 and the conversion module 3 are carried by a wavelength conversion disc; the convergence module 4, the monitoring module 6 and the protection module 7 are carried by a service convergence disc; part of functions of the monitoring module 6 are carried by a main control panel, a power panel and a fan panel; the management module 5 is carried by the master control disk. The fan disc is provided with a fan; the fan is connected with the first control chip through fan monitoring equipment.
The working principle of the utility model is as follows:
in an initial state, information transmission is carried out between the local side active machine frame type equipment I and the far end passive card type equipment II through main optical fibers. When the AAU side equipment V transmits signals to the DU/CU side equipment III, the aggregation module transmits light signals obtained by the far-end passive card type equipment II through the main optical fiber, and the light signals are separated according to the wavelength at the aggregation module and are respectively transmitted to the conversion module. The conversion module converts the color light signal into an electric signal and transmits the electric signal to the interface module. The interface module converts the electric signals into white light signals and transmits the white light signals to DU/CU equipment in the machine room. When the DU/CU side device iii transmits a signal to the AAU side device v, the transmission process is the reverse of the above-described transmission process.
2n +1 optical fiber detection units in the monitoring module 6 respectively detect whether optical signals transmitted by the standby optical fiber and the 2n optical fibers output by the convergence module are interrupted or not, and transmit results to the management module 5; if the 2n optical fibers output by the convergence module are all interrupted and the optical signal transmitted by the standby optical fiber is not interrupted, the management module 5 controls the optical switch to switch, so that the convergence module is connected with the standby optical fiber, and the main optical fiber is connected with the optical time domain reflection module. The laser diode in the optical time domain reflection module emits an optical signal, the optical signal is transmitted in the main optical fiber, is reflected back at the damaged part of the main optical fiber and is received by the first avalanche diode; the management module calculates the optical path length between the damaged part of the main optical fiber and the optical time domain reflection module according to the time difference of the optical signals transmitted by the laser diode and received by the first avalanche diode, so as to judge the damaged position of the main optical fiber.
Example 2
This example differs from example 1 in that: the local side active machine frame type equipment I is not provided with a conversion module and an interface module; 2n optical signals output by the convergence module are directly transmitted to DU side equipment after passing through 2n detection optical splitters in the detection module respectively.
In embodiment 1, the DU-side device receives a white light signal. In embodiment 2, the DU-side device receives a color light signal.
Claims (10)
1. A5G forwarding device based on semi-passive WDM technology comprises a main optical fiber, a spare optical fiber and a remote passive card type device; the method is characterized in that: the system also comprises local side active machine frame type equipment; the far-end passive card type device comprises a passive wavelength division device and a first optical splitter; the main interface of the first optical splitter is connected with the optical interface of the passive wavelength division equipment; two branch interfaces of the first optical splitter are respectively connected with one ends of the main optical fiber and the spare optical fiber;
the local side active machine frame type equipment comprises an interface module, a conversion module, a convergence module, a monitoring module, an optical time domain reflection module and a protection module; the optical time domain reflection module comprises a laser diode, a first transimpedance amplifier, a first AD conversion chip, a first avalanche photodiode and a circulator; a first optical interface of the circulator is connected with a laser emission interface of the laser diode, a second optical interface is connected with a photon input interface of the first avalanche photodiode, and a third interface is an external optical interface of the optical time domain reflection module; an electric signal output interface of the first avalanche photodiode is connected with an input interface of the first transimpedance amplifier; the output interface of the first transimpedance amplifier is connected with the analog signal input interface of the first AD conversion chip; a digital output interface of the first AD conversion chip is used as an output interface of the optical time domain reflection module; the third optical interface of the circulator is an optical signal input and output interface of the optical time domain reflection module;
the convergence module is provided with 2n sub-wave ports and 1 public port; 2n is the wave number of the communication optical signal; the protection module adopts an optical switch; two optical interfaces in the first interface group of the optical switch are respectively connected with the optical signal input and output interface of the optical time domain reflection module and the common end of the convergence module; two optical interfaces in the second interface group of the optical switch are respectively connected with the other ends of the main optical fiber and the spare optical fiber; the conversion module comprises n color light modules; the transmitting interfaces and the external receiving interfaces of the n colored light modules are respectively connected with 2n sub-wave ports of the convergence module; the interface module comprises n white lasers; the internal interfaces of the n white light lasers are electrically connected with the internal interfaces of the n color light modules in the conversion module;
the monitoring module comprises 2n +1 optical fiber detection units; the optical fiber detection unit comprises a detection beam splitter, a second avalanche diode and a second transimpedance amplifier; the detection optical splitters in the first 2n optical fiber detection units are respectively accessed between the external transmitting interface and the external receiving interface of the n colored light modules and the 2n sub-wave ports of the convergence module; detecting the access of the optical splitter to the standby optical fiber in the 2n +1 optical fiber detection unit;
a branch interface led out by the detection light splitter is connected with a photon input interface of the second avalanche diode; and an electric signal output interface of the second avalanche diode is connected with an input interface of the second transimpedance amplifier.
2. A 5G forwarding device based on semi-passive WDM technology according to claim 1, characterized in that: the local side active machine frame type equipment also comprises a management module; the management module comprises a first control chip, a second control chip and an FPGA; the second control chip is communicated with the FPGA through an SPI interface; the FPGA communicates with the first control chip through an SPI interface; the second control chip is communicated with the network management server through the Ethernet; the FPGA is connected with an output interface of the optical time domain reflection module through a GPIO parallel port; the I2C interfaces of the convergence module, the color light modules and the white light lasers are all connected with the FPGA; the control interface of the optical switch is connected with the first control chip; the output interfaces of the second transimpedance amplifiers in the 2n +1 optical fiber detection units are connected with the AD conversion interface of the first control chip, and the output interface of the optical time domain reflection module is connected with the second control chip.
3. A 5G forwarding device based on semi-passive WDM technology according to claim 2, characterized in that: the first control chip adopts a single chip microcomputer with the model number of STM32F 107; the model of the second control chip is MT 7620A; the model number of the FPGA is EP4CE 6.
4. A 5G forwarding device based on semi-passive WDM technology according to claim 1, characterized in that: and a clock data recovery module is arranged between the conversion module and the interface module.
5. A 5G forwarding device based on semi-passive WDM technology according to claim 1, characterized in that: the local side active machine frame type equipment is connected with DU/CU side equipment through optical fibers; the far-end passive card type equipment is connected with the AAU side equipment through optical fibers.
6. A 5G forwarding device based on semi-passive WDM technology according to claim 1, characterized in that: the local side active frame type equipment further comprises a power supply module; a switching power supply chip with the model number of MP1484EN is arranged in the power supply module; the power supply module supplies power to the interface module, the conversion module, the management module, the monitoring module and the protection module.
7. A 5G forwarding device based on semi-passive WDM technology according to claim 1, characterized in that: the optical switch adopts a 2X2 fully functional optical switch.
8. A 5G forwarding device based on semi-passive WDM technology according to claim 1, characterized in that: the color light module adopts a 25G color light laser packaged by SFP 28; the white laser adopts a 25G white laser packaged by SFP 28.
9. A 5G forwarding device based on semi-passive WDM technology according to claim 1, characterized in that: the first optical splitter is 50 percent to 50 percent; the detection spectroscope is 1% to 99% of unequal spectroscopes.
10. A 5G forwarding device based on semi-passive WDM technology according to claim 1, characterized in that: the models of the first transimpedance amplifier and the second transimpedance amplifier are both OPA 857; the model of the first AD conversion chip is ADS 4129.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112135208A (en) * | 2020-09-01 | 2020-12-25 | 广州汇信特通信技术股份有限公司 | Novel system applied to 5G forward-transmission semi-active demodulation top |
| CN112367115A (en) * | 2020-10-13 | 2021-02-12 | 杭州初灵信息技术股份有限公司 | Real-time optical fiber detection module and method applied to 5G forward transmission WDM system |
| CN112564803A (en) * | 2020-12-03 | 2021-03-26 | 武汉永鼎光通科技有限公司 | 5G forwarding network transmission system |
| CN112929081A (en) * | 2021-01-14 | 2021-06-08 | 南京科舜通信科技有限公司 | 5G forwarding network quality detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112135208A (en) * | 2020-09-01 | 2020-12-25 | 广州汇信特通信技术股份有限公司 | Novel system applied to 5G forward-transmission semi-active demodulation top |
| CN112367115A (en) * | 2020-10-13 | 2021-02-12 | 杭州初灵信息技术股份有限公司 | Real-time optical fiber detection module and method applied to 5G forward transmission WDM system |
| CN112564803A (en) * | 2020-12-03 | 2021-03-26 | 武汉永鼎光通科技有限公司 | 5G forwarding network transmission system |
| CN112929081A (en) * | 2021-01-14 | 2021-06-08 | 南京科舜通信科技有限公司 | 5G forwarding network quality detection method |
| CN112929081B (en) * | 2021-01-14 | 2022-03-15 | 南京科舜通信科技有限公司 | 5G forwarding network quality detection method |
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